Entropy radiated by a braneworld black hole
Abstract
The concept of black hole entropy is one of the most important enigmas of theoretical physics. It relates thermodynamics to gravity and allows substantial hints toward a quantum theory of gravitation. Although Bekenstein conjecture—assuming the black hole entropy to be a measure of the number of precollapse configurations—has proved to be extremely fruitful, a direct and conclusive proof is still missing. This paper computes accurately the entropy evaporated by black holes in (4+n) dimensions taking into account the exact greybody factors. This is a key process to constrain and understand the entropy of black holes as the final state is unambiguously defined. Those results allow us to generalize Zurek’s important argument, in favor of the Bekenstein conjecture, to multidimensional scenarios.
 Publication:

Physical Review D
 Pub Date:
 October 2007
 DOI:
 10.1103/PhysRevD.76.087503
 arXiv:
 arXiv:0710.1998
 Bibcode:
 2007PhRvD..76h7503B
 Keywords:

 04.70.Dy;
 04.50.+h;
 04.62.+v;
 11.10.Kk;
 Quantum aspects of black holes evaporation thermodynamics;
 Gravity in more than four dimensions KaluzaKlein theory unified field theories;
 alternative theories of gravity;
 Quantum field theory in curved spacetime;
 Field theories in dimensions other than four;
 High Energy Physics  Theory;
 Astrophysics;
 General Relativity and Quantum Cosmology;
 High Energy Physics  Phenomenology
 EPrint:
 6 pages, 3 figures