The study of the black holes in higher-dimensional space-time has got the focus mainly after
developments of string theory or M-theory. Beside this, construction of brane world scenario …

In this paper, we consider the Kerr–Sen black hole. Unlike the AdS black hole, it is actually
an exact solution for the heterotic string theory in the low energy effective field theory in four …

In this article we extend the variational technique for maximal volume estimation of a black
hole developed by Christodoulou and Rovelli (CR) to the case of a charged BTZ black hole …

Abstract Recently Christodoulou and Rovelli brought out a sensible description for the black
hole volume as the largest volume. Later the entropy related to this volume in a 4 …

A bstract We present a new “universal property” of entropy, that is the “entropy sum” relation
of black holes in four dimensional (anti-) de-Sitter asymptotical background. They depend …

The investigation about the volume of a black hole is closely related to the quantum nature
of the black hole. The entropy is a significant concept for this. A recent work by Majhi and …

Abstract In Schwarzschild spacetime, Reinhart (1973) has shown the hypersurface rss= 3
M/2 (the subscript stands for “steady-state”) to be the maximal hypersurface. This steady …

In the previous work we give a microscopic explanation of the entropy for the BTZ black hole
and four-dimensional Kerr black hole based on the massless scalar field theory on the …

Using a unified approach, we study the entropy of extremal black holes through the entropy
of an electrically charged thin shell. We encounter three cases in which a shell can be taken …

We study the entropy relations of multihorizon black holes in higher dimensional (A) dS
spacetime with maximal symmetries, including Einstein-Maxwell gravity and f (R)(-Maxwell) …