Quantum entropy of two-dimensional extreme charged dilaton black hole
نویسنده
چکیده
By using Hawking’s treatment as well as Zaslavskii’s treatment respectively and the brick wall model, two different values of classical entropy and quantum entropy of scalar fields in the two-dimensional extreme charged dilaton black hole backgrounds have been obtained. A new divergent term emerges in the quantum entropy under the extreme limit for Zaslavskii’s treatment and its connection with the phase transition has been addressed. PACS number(s): 04.70.Dy, 04.20.Gz, 04.62.+v. Email: [email protected], Permanent address: Dept. of Physics, Shanghai Normal Univ., Shanghai 200234, P.R.China Email: [email protected]
منابع مشابه
Two-dimensional black holes in accelerated frames: quantum aspects
By considering charged black hole solutions of a one parameter family of two dimensional dilaton gravity theories, one finds the existence of quantum mechanically stable gravitational kinks with a simple mass to charge relation. Unlike their Einsteinian counterpart (i.e. extreme ReissnerNordström), these have nonvanishing horizon surface gravity.
متن کاملMicroscopic entropy of black holes and AdS 2 quantum gravity ∗
Quantum gravity (QG) on two-dimensional anti-de Sitter spacetime (AdS2) takes always the form of a chiral conformal field theory (CFT). However, the actual content of the CFT, and in particular its central charge, depends on the background values of the dilaton and Maxwell field. We review the main features of AdS2 QG with linear dilaton and of AdS2 QG with constant dilaton and Maxwell field. W...
متن کاملUniversality of Quantum Entropy for Extreme Black Holes
We consider the extremal limit of a black hole geometry of the Reissner-Nordstrom type and compute the quantum corrections to its entropy. Universally, the limiting geometry is the direct product of two 2-dimensional spaces and is characterized by just a few parameters. We argue that the quantum corrections to the entropy of such extremal black holes due to a massless scalar field have a univer...
متن کاملSupersymmetry as a cosmic censor.
In supersymmetric theories the mass of any state is bounded below by the values of some of its charges. The corresponding bounds in the case of Schwarzschild (M & 0 ) and Reissner-Nordstrom (M & ~q~) black holes are known to coincide with the requirement that naked singularities be absent. Here we investigate [U(1)j charged dilaton black holes in this context. The extreme solutions are shown to...
متن کاملBlack hole thermodynamics and two-dimensional dilaton gravity theory
We relate various black hole solutions in the near-horizon region to black hole solutions in two-dimensional dilaton gravity theories in order to argue that the thermodynamics of black holes in D>4 can be effectively described by the thermodynamics of black holes in two-dimensional dilaton gravity theories. We show that the Bekenstein-Hawking entropies of single-charged dilatonic black holes an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998