منابع مشابه
Quantum Gravity and Black Hole †
The quantum theory of the spherically symmetric gravity in 3+1 dimensions is investigated. The functional measures are explicitly evaluated and the physical state conditions are derived by using the technique developed in two dimensional quantum gravity. Then the new features which are not seen in ADM formalism come out. If κs > 0, where κs = (N − 27)/12π and N is the number of matter fields, a...
متن کاملBlack hole solutions in massive gravity
The static vacuum spherically symmetric solutions in massive gravity are obtained both analytically and numerically. The solutions depend on two parameters (integration constants): the mass M (or, equivalently, the Schwarzschild radius), and an additional parameter, the “scalar charge” S. At zero value of S and positive mass the standard Schwarzschild black hole solutions are recovered. Dependi...
متن کاملBlack hole entropy in Loop Quantum Gravity
We calculate the black hole entropy in Loop Quantum Gravity as a function of the horizon area and provide the exact formula for the leading and sub-leading terms. By comparison with the Bekenstein– Hawking formula we uniquely fix the value of the ’quantum of area’ in the theory. The Bekenstein–Hawking formula gives the leading term in the entropy of the black hole in the form S = 1 4 A l P (1) ...
متن کاملBlack-hole thermodynamics in Lovelock gravity.
five dimensions, one finds that the specific heat of a black hole becomes positive at small mass, allowing the black hole to achieve stable equilibrium with its environment and giving it an infinite lifetime. This behavior is not universal, however, but it always occurs in 2k+1 dimensions for a Lovelock theory including the 2k-dimensional Euler density. For theories including six-derivative or ...
متن کاملBlack Hole Thermodynamics from Quantum Gravity ∗
The semiclassical approximation is studied on hypersurfaces approaching the union of future null infinity and the event horizon on a large class of four dimensional black hole backgrounds. Quantum fluctuations in the background geometry are shown to lead to a breakdown of the semiclassical approximation in these models. The boundary of the region where the semiclassical approximation breaks dow...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2018
ISSN: 0264-9381,1361-6382
DOI: 10.1088/1361-6382/aacc20