In this article we compute the black hole entropy by finding a classical central charge of the Virasoro algebra of a Liouville theory using the Cardy formula. This is done by performing a dimensional reduction of the Einstein Hilbert action with the ansatz of spherical symmetry and writing the metric in conformally flat form. We obtain two coupled field equations. Using the near horizon approxi...

We study thermodynamic state-space geometry of the black holes in string theory and M -theory. For a large number of microstates, we analyze the intrinsic state-space geometry for (i) extremal and non-extremal black branes in string theory, (ii) multi-centered black brane configurations, (iv) small black holes with fractional branes, and (v) fuzzy rings in the setup of Mathur’s fuzzballs and su...

the aim of this study is to study the nomad women's indigenous knowledge of housing in tribes of kalhor kalhor. the study was a done by qualitative approach, using participatory methods pra, and focus groups in the gilan e gharb city of kermanshah province. the results were analyzed by content analysis. purposeful sampling was used for data collection. findings from real-life context of tr...

A bstract The analytic continuation of the general signature (1, 3) Lorentzian Kerr-Taub-NUT black holes to (2, 2) Kleinian is studied. Their global structure characterized by a toric Penrose diagram resembling their counterparts. are found be self-dual when mass and NUT charge equal for any value Kerr rotation parameter . Remarkably, it shown that can eliminated large diffeomorphism; this resu...

This paper considers the effects of space noncommutativity on the thermodynamics of a Reissner-Nordström black hole. In the first step, we extend the ordinary formalism of Bekenstein-Hawking to the case of charged black holes in commutative space. In the second step we investigate the effects of space noncommutativity and the generalized uncertainty principle on the thermodynamics of charged bl...