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Feb 21, 2013
02/13

by
goetheguerilla@gma...

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Topics: field recording, phonography, soundscape, sound art, soundmap, radio, ephemeral, listening, radio...

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Apr 21, 2014
04/14

by
Frank Schulte

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Am HBF Gleis 6. Der Klang von rollendem Gepäck. Die Rolltreppe die zum Gleis führt und eine Durchsage. Sound of rolling luggage, the moving staircase leading up to track 6, - an announcement. Projekt - Stadtklang//: Hörorte - topographic field recordings and social ambiences

Topics: field recording, phonography, soundscape, sound art, soundmap, radio, ephemeral, listening, radio...

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Jul 20, 2013
07/13

by
Kenji Nakanishi; Wilhelm Schlag

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We extend our previous result on the nonlinear Klein-Gordon equation to the nonlinear Schrodinger equation with the focusing cubic nonlinearity in three dimensions, for radial data of energy at most slightly above that of the ground state. We prove that the initial data set splits into nine nonempty, pairwise disjoint regions which are characterized by the distinct behaviors of the solution for large time: blow-up, scattering to 0, or scattering to the family of ground states generated by the...

Source: http://arxiv.org/abs/1007.4025v2

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Sep 19, 2013
09/13

by
Hua-Xing Chen; Zi-Xing Cai; Peng-Zhi Huang; Shi-Lin Zhu

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Within the framework of the QCD sum rules, we consider the three-point correlation function, work at the limit q^2 -> 0 and m_\pi -> 0, and pick out the singular term ~ {1\over q^2} to extract the pionic coupling constants of the 1^{-+} hybrid meson. Then we calculate the decay widths of different modes. The decay width of the S-wave modes b_1 \pi, f_1\pi increases quickly as the hybrid meson mass and decay momentum increase. But for the low mass hybrid meson around 1.6 GeV, the P-wave...

Source: http://arxiv.org/abs/1010.3974v4

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Sep 21, 2013
09/13

by
Guo-Liang Ma; Xin-Nian Wang

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Within the AMPT Monte Carlo model, hot spots in the initial transverse parton density are shown to lead to harmonic flows which all contribute to dihadron azimuthal correlation. The net back-to-back dihadron correlation after subtraction of harmonic flows still has a double-peak that is independent of the initial geometric triangularity at a fixed impact-parameter and unique to the structure of jet-induced Mach cone and expanding hot spots dragged by radial flow. The longitudinal structure of...

Source: http://arxiv.org/abs/1011.5249v3

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Sep 21, 2013
09/13

by
Martin Hutzenthaler; Jesse E. Taylor

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We describe the processes obtained by time reversal of a class of stationary jump-diffusion processes that model the dynamics of genetic variation in populations subject to repeated bottlenecks. Assuming that only one lineage survives each bottleneck, the forward process is a diffusion on [0,1] that jumps to the boundary before diffusing back into the interior. We show that the behavior of the time-reversed process depends on whether the boundaries are accessible to the diffusive motion of the...

Source: http://arxiv.org/abs/1011.3379v2

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Sep 22, 2013
09/13

by
Brad E. Tucker

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Type Ia Supernova(SN Ia) are a powerful, albeit not completely understood, tool for cosmology. Gaps in our understanding of their progenitors and detailed physics can lead to systematic errors in the cosmological distances they measure. We use UV data in two context to help further our understanding of SN Ia progenitors and physics. We analyze a set of nearly 700 light curves, and find no signature of the shock heating of a red giant companion, predicted by Kasen (2010), casting doubt as to...

Source: http://arxiv.org/abs/1101.2396v1

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Sep 23, 2013
09/13

by
Qiang Zhao

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We show that the newly measured branching ratios of vector charmonia ($J/\psi$, $\psi^\prime$ and $\psi(3770))$ into $\gamma P$, where $P$ stands for light pseudoscalar mesons $\pi^0$, $\eta$, and $\eta^\prime$, can be well understood in the framework of vector meson dominance (VMD) in association with the $\eta_c$-$\eta(\eta^\prime)$ mixings due to the axial gluonic anomaly. These two mechanisms behave differently in $J/\psi$ and $\psi^\prime\to \gamma P$. A coherent understanding of the...

Source: http://arxiv.org/abs/1012.1165v3

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Sep 21, 2013
09/13

by
Valentina Mameli; Monica Musio

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The aim of this article is to introduce a new family of distributions, which generalizes the skew normal distribution (SN). This new family, called Beta skew-normal (BSN), arises naturally when we consider the distributions of order statistics of the SN. The BSN can also be obtained as a special case of the Beta generated distribution (Jones (2004)). In this work we pay attention to three other generalizations of the SN distribution: the Balakrishnan skew-normal (SNB) (Balakrishnan (2002), as a...

Source: http://arxiv.org/abs/1104.4218v1

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Sep 21, 2013
09/13

by
Kai Ma; Sayipjamal Dulat

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We study the spin-orbital interaction and the spin Hall effect(SHE) of an electron moving on a noncommutative space under the influence of a vector potential A. On a noncommutative space we find that the commutator between the vector potential A and the electric potential V_1(r) of lattice induces a new term which can be treated as an effective electric field, and the spin-Hall conductivity obtains some correction. In addition, the spin current as well as spin-Hall conductivity have distinct...

Source: http://arxiv.org/abs/1104.4955v2

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Sep 21, 2013
09/13

by
Soebur Razzaque; A. Yu. Smirnov

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Oscillation interpretation of the results from the LSND, MiniBooNE and some other experiments requires existence of sterile neutrino with mass $\sim 1$ eV and mixing with the active neutrinos $|U_{\mu 0}|^2 \sim (0.02 - 0.04)$. It has been realized some time ago that existence of such a neutrino affects significantly the fluxes of atmospheric neutrinos in the TeV range which can be tested by the IceCube Neutrino Observatory. In view of the first IceCube data release we have revisited the...

Source: http://arxiv.org/abs/1104.1390v4

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Sep 21, 2013
09/13

by
Xiaodan Fan; Yuan Yuan; Jun S. Liu

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In the past decade computational biology has grown from a cottage industry with a handful of researchers to an attractive interdisciplinary field, catching the attention and imagination of many quantitatively-minded scientists. Of interest to us is the key role played by the EM algorithm during this transformation. We survey the use of the EM algorithm in a few important computational biology problems surrounding the "central dogma"; of molecular biology: from DNA to RNA and then to...

Source: http://arxiv.org/abs/1104.2180v1

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Sep 21, 2013
09/13

by
Tatsuo Nishitani; Karen Yagdjian

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In this note we concern with the wave maps from the Lorentzian manifold with the periodic in time metric into the Riemannian manifold, which belongs to the one-parameter family of Riemannian manifolds. That family contains as a special case the Poincare upper half-plane model. Our interest to such maps is motivated with some particular type of the Robertson-Walker spacetime arising in the cosmology. We show that small periodic in time perturbation of the Minkowski metric generates parametric...

Source: http://arxiv.org/abs/1104.2883v2

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Sep 22, 2013
09/13

by
Miriam del Valle; Magdalena Marganska; Milena Grifoni

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The transport properties of finite nanotubes placed in a magnetic field parallel to their axes are investigated. Upon including spin-orbit coupling and curvature effects, two main phenomena are analyzed which crucially depend on the tube's chirality: i) Finite carbon nanotubes in a parallel magnetic field may present a suppression of current due to the localization at the edges of otherwise conducting states. This phenomenon occurs due to the magnetic-field dependent open boundary conditions...

Source: http://arxiv.org/abs/1103.2308v1

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Sep 22, 2013
09/13

by
Damian J. J. Farnell

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In this article we investigate the linear-chain spin-half $J_1$--$J_2$ model by using high-order coupled cluster method (CCM) calculations. We employ three model states, namely, a nearest-neighbour (n.n.) N\'eel model state in which neighbouring spins are antiparallel, a next-nearest-neighbour (n.n.n.) N\'eel model state in which next-neighbouring spins are antiparallel, and finally a type of "double spiral" model state with {\it two} pitch angles. For $J_2/J_1 \le \frac 12$, we find...

Source: http://arxiv.org/abs/1103.1247v1

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Sep 23, 2013
09/13

by
Antonio Cirillo; Matteo Mancini; Domenico Giuliano; Pasquale Sodano

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We use boundary field theory to describe the phases accessible to a tetrahedral qubit coupled to Josephson junction chains acting as Tomonaga-Luttinger liquid leads. We prove that, in a pertinent range of the fabrication and control parameters, an attractive finite coupling fixed point emerges due to the geometry of the composite Josephson junction network. We show that this new stable phase is characterized by the emergence of a quantum doublet which is robust not only against the noise in the...

Source: http://arxiv.org/abs/1105.1443v2

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Sep 22, 2013
09/13

by
Nikolai Meures; Marco Bruni

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At a time when galaxy surveys and other observations are reaching unprecedented sky coverage and precision it seems timely to investigate the effects of general relativistic nonlinear dynamics on the growth of structures and on observations. Analytic inhomogeneous cosmological models are an indispensable way of investigating and understanding these effects in a simplified context. In this paper, we develop exact inhomogeneous solutions of general relativity with pressureless matter (dust,...

Source: http://arxiv.org/abs/1103.0501v2

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Sep 21, 2013
09/13

by
Oscar J. C. Dias; Ricardo Monteiro; Jorge E. Santos

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We study linearized perturbations of Myers-Perry black holes in d=7, with two of the three angular momenta set to be equal, and show that instabilities always appear before extremality. Analogous results are expected for all higher odd d. We determine numerically the stationary perturbations that mark the onset of instability for the modes that preserve the isometries of the background. The onset is continuously connected between the previously studied sectors of solutions with a single angular...

Source: http://arxiv.org/abs/1106.4554v1

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Sep 21, 2013
09/13

by
Ping Zhao; Kefeng Diao; Kaishun Wang

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For any set $S$ of positive integers, a mixed hypergraph ${\cal H}$ is a realization of $S$ if its feasible set is $S$, furthermore, ${\cal H}$ is a one-realization of $S$ if it is a realization of $S$ and each entry of its chromatic spectrum is either 0 or 1. Jiang et al. \cite{Jiang} showed that the minimum number of vertices of realization of $\{s,t\}$ with $2\leq s\leq t-2$ is $2t-s$. Kr$\acute{\rm a}$l \cite{Kral} proved that there exists a one-realization of $S$ with at most...

Source: http://arxiv.org/abs/1106.6099v1

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Sep 21, 2013
09/13

by
M. Stier; S. Henning; W. Nolting

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We investigate the existence of several (anti-)ferromagnetic phases in the diluted ferromagnetic Kondo-lattice model, i.e. ferromagnetic coupling of local moment and electron spin. To do this we use a coherent potential approximation (CPA) with a dynamical alloy analogy. For the CPA we need effective potentials, which we get first from a mean-field approximation. To improve this treatment we use in the next step a more appropriate moment conserving decoupling approach and compare both methods....

Source: http://arxiv.org/abs/1106.0181v1

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Sep 21, 2013
09/13

by
Kimmo Luoma; Kalle-Antti Suominen; Jyrki Piilo

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The development and use of Monte Carlo algorithms plays a visible role in the study of non-Markovian quantum dynamics due to the provided insight and powerful numerical methods for solving the system dynamics. In the Markovian case, the connections between the various types of methods are fairly well-understood while for non-Markovian case there has so far been only a few studies. We focus here on two jumplike unravelings of non-Markovian dynamics, the non-Markovian quantum jump (NMQJ) method...

Source: http://arxiv.org/abs/1106.3173v1

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Sep 23, 2013
09/13

by
Lu Li; N. Alidoust; J. M. Tranquada; G. D. Gu; N. P. Ong

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The striped cuprate La$_{2-x}$Ba$_x$CuO$_4$ ($x=\frac18)$ undergoes several transitions below the charge-ordering temperature $T_{co}$ = 54 K. From Nernst experiments, we find that, below $T_{co}$, there exists a large, anomalous Nernst signal $e_{N,even}(H,T)$ that is symmetric in field $H$, and remains finite as $H\to 0$. The time-reversal violating signal suggests that, below $T_{co}$, vortices of one sign are spontaneously created to relieve interlayer phase frustration.

Source: http://arxiv.org/abs/1110.2137v1

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Sep 23, 2013
09/13

by
Kaushal Verma

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Let $X$ be an arbitrary complex surface and $D \subset X$ a domain that has a non compact group of holomorphic automorphisms. A characterization of those domains $D$ that admit a smooth real analytic, finite type boundary orbit accumulation point and whose closures are contained in a complete hyperbolic domain $D'\subset X$ is obtained.

Source: http://arxiv.org/abs/1110.3926v1

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Sep 23, 2013
09/13

by
Jean-Francois Rajotte; for the Qweak Collaboration

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The Qweak experiment at Jefferson Laboratory measures the parity violating asymmetry of polarized electrons scattering from a proton target at very low momentum transfer. In the Standard Model, this asymmetry reveals the proton's coupling to the neutral vector current, the weak charge. This value, measured directly for the first time, will provide a precision test of the Standard Model and will constrain the possibility of relevant physics beyond the Standard Model. The planned precision will...

Source: http://arxiv.org/abs/1110.2218v1

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Sep 23, 2013
09/13

by
Laura Ingleby; Nuria Calvet; Edwin Bergin; Gregory Herczeg; Alexander Brown; Richard Alexander; Suzan Edwards; Catherine Espaillat; Kevin France; Scott G. Gregory; Lynne Hillenbrand; Evelyne Roueff; Jeff Valenti; Frederick Walter; Christopher Johns-Krull; Joanna Brown; Jeffrey Linsky; Melissa McClure; David Ardila; Herve Abgrall; Thomas Bethell; Gaitee Hussain; Hao Yang

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Young stars surrounded by disks with very low mass accretion rates are likely in the final stages of inner disk evolution and therefore particularly interesting to study. We present ultraviolet (UV) observations of the ~5-9 Myr old stars RECX-1 and RECX-11, obtained with the Cosmic Origins Spectrograph (COS) and Space Telescope Imaging Spectrograph (STIS) on the Hubble Space Telescope (HST), as well as optical and near infrared spectroscopic observations. The two stars have similar levels of...

Source: http://arxiv.org/abs/1110.6312v1

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Sep 23, 2013
09/13

by
Giorgio Torrieri

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We give an overview of some results presented at the Strange Quark Matter 2011 conference in Krakow, and interpret them in light of the search of the search for a QCD deconfinement phase transition in heavy ion collisions

Source: http://arxiv.org/abs/1111.6122v1

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Sep 23, 2013
09/13

by
Nicolo` Sibilla

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Let X_n be a cycle of n projective lines, and T_n a symplectic torus with n punctures. In this paper we review results appeared in arXiv:1103.2462 and in arXiv:1109.6615, which establish a version of homological mirror symmetry relating X_n and T_n, and define on D^b(Coh(X_n)) an action of the pure mapping class group of T_n.

Source: http://arxiv.org/abs/1111.5284v1

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Sep 18, 2013
09/13

by
M. Kiraga; K. Stepien

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Based on analysis of photometric observations of nearby M type stars obtained with ASAS, 31 periodic variables were detected. The determined periods are assumed to be related to rotation periods of the investigated stars. Among them 10 new variables with periods longer than 10 days were found, which brings the total number of slowly rotating M stars with known rotation periods to 12 objects. X-ray activity and rotation evolution of M stars follows the trends observed in G-K type stars. Rapidly...

Source: http://arxiv.org/abs/0707.2577v2

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Sep 21, 2013
09/13

by
M. Maniatis; O. Nachtmann

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We discuss the classification of symmetries and the corresponding symmetry groups in the two-Higgs-doublet model (THDM). We give an easily useable method how to determine the symmetry class and corresponding symmetry group of a given THDM Higgs potential. One of the symmetry classes corresponds to a Higgs potential with several simultaneous generalised CP symmetries. Extending the CP symmetry of this class to the Yukawa sector in a straightforward way, the so-called maximally-CP-symmetric model...

Source: http://arxiv.org/abs/1106.1436v1

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Sep 21, 2013
09/13

by
Lior Bary-Soroker; Arno Fehm

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Fifteen years after their discovery, ample fields now stand at the center of research in contemporary Galois theory and attract more and more attention also from other areas of mathematics. This survey gives an introduction to the theory of ample fields and discusses open problems.

Source: http://arxiv.org/abs/1106.1310v1

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Sep 23, 2013
09/13

by
Jean-Marc Azaïs; Mario Wschebor

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We study the probability distribution of the maximum $M_S $ of a smooth stationary Gaussian field defined on a fractal subset $S$ of $\R^n$. Our main result is the equivalent of the asymptotic behavior of the tail of the distribution $\P(M_S>u)$ as $u\rightarrow +\infty.$ The basic tool is Rice formula for the moments of the number of local maxima of a random field.

Source: http://arxiv.org/abs/1109.3895v1

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Sep 21, 2013
09/13

by
Alexander K. Popov; Vladimir M. Shalaev

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The extraordinary properties of nonlinear optical propagation processes in double-domain positive/negative index metamaterials are reviewed. These processes include second harmonic generation, three- and four-wave frequency mixing, and optical parametric amplification. Striking contrasts with the properties of the counterparts in ordinary materials are shown. We also discuss the possibilities for compensating strong losses inherent to plasmonic metamaterials, which present a major obstacle in...

Source: http://arxiv.org/abs/1108.0867v1

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Sep 21, 2013
09/13

by
S. Sultana; A. Danehkar; N. S. Saini; M. A. Hellberg; I. Kourakis

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The nonlinear propagation of electron-acoustic solitary structures is investigated in a plasma containing kappa-distributed (superthermal) electrons. Different types of localized structures are shown to exist. The occurrence of modulational instability is investigated.

Source: http://arxiv.org/abs/1108.3073v1

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Sep 21, 2013
09/13

by
J. Wurm; K. Richter; I. Adagideli

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We investigate the effect of different edge types on the statistical properties of both the energy spectrum of closed graphene billiards and the conductance of open graphene cavities in the semiclassical limit. To this end, we use the semiclassical Green's function for ballistic graphene flakes that we have derived in Reference 1. First we study the spectral two point correlation function, or more precisely its Fourier transform the spectral form factor, starting from the graphene version of...

Source: http://arxiv.org/abs/1108.1457v2

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Sep 21, 2013
09/13

by
David M. South

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A search for second and third generation scalar and vector leptoquarks produced in ep collisions via the lepton flavour violating processes ep -> mu X and ep -> tau X is performed by the H1 experiment at HERA. The full H1 ep data sample taken at a centre-of-mass energy of 319 GeV is used for the analysis. No evidence for the production of such leptoquarks is observed in the H1 data. Leptoquarks produced in ep collisions with a coupling strength of 0.3 and decaying with the same coupling...

Source: http://arxiv.org/abs/1108.1134v1

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Sep 23, 2013
09/13

by
K. Ito; E. Skibsted

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In this paper we study absence of embedded eigenvalues for Schr\"odinger operators on non-compact connected Riemannian manifolds. A principal example is given by a manifold with an end (possibly more than one) in which geodesic coordinates are naturally defined. In this case one of our geometric conditions is a positive lower bound of the second fundamental form of angular submanifolds at infinity inside the end. Another condition may be viewed (at least in a special case) as being a bound...

Source: http://arxiv.org/abs/1109.1928v1

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Sep 23, 2013
09/13

by
G. Gottlob; G. Greco; F. Scarcello

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We investigate complexity issues related to pure Nash equilibria of strategic games. We show that, even in very restrictive settings, determining whether a game has a pure Nash Equilibrium is NP-hard, while deciding whether a game has a strong Nash equilibrium is SigmaP2-complete. We then study practically relevant restrictions that lower the complexity. In particular, we are interested in quantitative and qualitative restrictions of the way each players payoff depends on moves of other...

Source: http://arxiv.org/abs/1109.2152v1

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Sep 23, 2013
09/13

by
B Niermann; R Reuter; T Kuschel; J Benedikt; M Böke; J Winter

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Space and time resolved concentrations of Ar ($^{3}P_2$) metastable atoms at the exit of an atmospheric pressure radio-frequency micro-plasma jet were measured using tunable diode laser absorption spectroscopy. The discharge features a coaxial geometry with a hollow capillary as an inner electrode and a ceramic tube with metal ring as outer electrode. Absorption profiles of metastable atoms as well as optical emission measurements reveal the dynamics and the filamentary structure of the...

Source: http://arxiv.org/abs/1109.3072v1

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Sep 24, 2013
09/13

by
Nik Weaver

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We analyze the informal notion of truth and conclude that it can be formalized in essentially two distinct ways: constructively, in terms of provability, or classically, as a hierarchy of concepts which satisfy Tarski's biconditional in limited settings. This leads to a complete resolution of the liar paradox.

Source: http://arxiv.org/abs/1112.6127v1

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Sep 23, 2013
09/13

by
Julia Chuzhoy; Yury Makarychev; Aravindan Vijayaraghavan; Yuan Zhou

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We study the k-route cut problem: given an undirected edge-weighted graph G=(V,E), a collection {(s_1,t_1),(s_2,t_2),...,(s_r,t_r)} of source-sink pairs, and an integer connectivity requirement k, the goal is to find a minimum-weight subset E' of edges to remove, such that the connectivity of every pair (s_i, t_i) falls below k. Specifically, in the edge-connectivity version, EC-kRC, the requirement is that there are at most (k-1) edge-disjoint paths connecting s_i to t_i in G \ E', while in...

Source: http://arxiv.org/abs/1112.3611v2

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Sep 24, 2013
09/13

by
Robert F. Penna

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We model the collapse of a spherically symmetric, constant density, pressureless shell onto a preexisting black hole. Contrary to a recent claim of Liu and Zhang (2009), we show that an observer at infinity never sees any part of the shell cross the event horizon. The entire shell appears to "freeze" outside the black hole. We find that during intermediate stages of the collapse, the change in apparent size of the inner surface is non-monotonic. However, at late times, the apparent...

Source: http://arxiv.org/abs/1112.3638v1

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Sep 20, 2013
09/13

by
Graham Smith

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We consider surfaces of constant Gaussian curvature immersed in 3-dimensional manifolds, and we strengthen the compactness result of Labourie in the case where the ambient manifold is 3-dimensional hyperbolic space. This allows us to prove results of existence of solutions to the asymptotic Plateau problem, as defined by Labourie, and the continuous dependence of these solutions on the data.

Source: http://arxiv.org/abs/math/0506231v2

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Feb 21, 2013
02/13

by
Björn Eriksson

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To listen to water in different forms really makes sense on a rainy day as it is present everywhere - also soundwise. So next stop in the soundwalk on the World Listening Day was at the middle sized creek called Bruksån in the city center of Sollefteå. Here we stopped at the bridge and listened a while. WLD

Topics: field recording, phonography, soundscape, sound art, soundmap, radio, ephemeral, listening, radio...

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Jan 14, 2015
01/15

by
henrik schröder

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Topics: field recording, phonography, soundscape, sound art, soundmap, radio, ephemeral, listening, radio...

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Feb 21, 2013
02/13

by
jochumsen@yah...

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Topics: field recording, phonography, soundscape, sound art, soundmap, radio, ephemeral, listening, radio...

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Feb 21, 2013
02/13

by
TonyW

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Topics: field recording, phonography, soundscape, sound art, soundmap, radio, ephemeral, listening, radio...

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Sep 19, 2013
09/13

by
M. S. Baptista; F. M. Moukam Kakmeni; C. Grebogi

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In this work we studied the combined action of chemical and electrical synapses in small networks of Hindmarsh-Rose (HR) neurons on the synchronous behaviour and on the rate of information produced (per time unit) by the networks. We show that if the chemical synapse is excitatory, the larger the chemical synapse strength used the smaller the electrical synapse strength needed to achieve complete synchronisation, and for moderate synaptic strengths one should expect to find desynchronous...

Source: http://arxiv.org/abs/0910.0988v3

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Sep 17, 2013
09/13

by
Martin Loebl; Petr Somberg

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The aim of this paper is to formulate a discrete analog of the claim made by Alvarez-Gaume et al., (\cite{a}), stating that the partition function of the free fermion on a closed Riemann surface of genus $g$ is certain linear combination of $2^{2g}$ Pfaffians of Dirac operators. Let $G=(V,E)$ be a finite graph embedded in a closed Riemann surface $X$ of genus $g$, $x_e$ the collection of independent variables associated with each edge $e$ of $G$ (collected in one vector variable $x$) and $\S$...

Source: http://arxiv.org/abs/0912.3200v3

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Sep 22, 2013
09/13

by
Masahiko Egami; Kazutoshi Yamazaki

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Sustaining efficiency and stability by properly controlling the equity to asset ratio is one of the most important and difficult challenges in bank management. Due to unexpected and abrupt decline of asset values, a bank must closely monitor its net worth as well as market conditions, and one of its important concerns is when to raise more capital so as not to violate capital adequacy requirements. In this paper, we model the tradeoff between avoiding costs of delay and premature capital...

Source: http://arxiv.org/abs/1004.0595v3

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97

Sep 23, 2013
09/13

by
Sujoy Kumar Modak; Saurav Samanta

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We calculate the effective Komar angular momentum for the Kerr-Newman (KN) black hole. This result is valid at any radial distance on and outside the black hole event horizon. The effcetive values of mass and angular momentum are then used to derive an identity ($K_{\chi^{\mu}}=2ST$) which relates the Komar conserved charge ($K_{\chi^{\mu}}$) corresponding to the null Killing vector ($\chi^{\mu}$) with the thermodynamic quantities of this black hole. As an application of this identity the...

Source: http://arxiv.org/abs/1006.3445v3