26 0 v 1 1 7 A ug 2 00 0 Black Holes Must Die
نویسندگان
چکیده
In light of recent evidence suggesting a nonzero present-day cosmological constant [1], Adams, Mbonye, & Laughlin[2] have considered the evolution of black holes in the presence of vacuum energy. Using the assumption that Λ remains constant with time and a conjecture based on a paper by Mallett [3], they reach the remarkable conclusion that black holes with current mass greater than ∼ 2 × 10 −9 M ⊙ will not Hawking evaporate in the distant future, but will instead absorb vacuum energy and grow to roughly the de Sitter horizon size. In this letter we reexamine black hole evaporation in the presence of a cosmological constant, and find instead that all known black holes will eventually evaporate. It is well known that a black hole of mass M in otherwise empty spacetime radiates as a blackbody at the Hawking temperature T H = 1/(8πGM) = 6.15 × 10 −8 (M ⊙ /M)K. (1) It is also well known that inertial observers in a de Sitter universe with cosmological constant Λ feel themselves to be immersed in a bath of thermal particles at the Gibbons-Hawking temperature [4]
منابع مشابه
ar X iv : 0 80 8 . 25 12 v 1 [ he p - ph ] 1 9 A ug 2 00 8 Study of highly - excited string states at the Large Hadron Collider
In TeV-scale gravity scenarios with large extra dimensions, black holes may be produced at future colliders. Good arguments have been made for why general relativistic black holes may be just out of reach of the Large Hadron Collider (LHC). However, in weakly-coupled string theory, highly excited string states – string balls – could be produced at the LHC with high rates and decay thermally, no...
متن کاملar X iv : 0 70 8 . 30 83 v 1 [ as tr o - ph ] 2 3 A ug 2 00 7 Dynamics around supermassive black holes
The dynamics of galactic nuclei reflects the presence of supermassive black holes (SBHs) in many ways. Single SBHs act as sinks, destroying a mass in stars equal to their own mass in roughly one relaxation time and forcing nuclei to expand. Formation of binary SBHs displaces a mass in stars roughly equal to the binary mass, creating low-density cores and ejecting hyper-velocity stars. Gravitati...
متن کاملar X iv : 0 70 8 . 41 96 v 2 [ gr - q c ] 3 1 A ug 2 00 7 A universal constraint between charge and rotation rate for degenerate black holes surrounded by matter
We consider stationary, axially and equatorially symmetric systems consisting of a central rotating and charged degenerate black hole and surrounding physically realistic matter. We show that a + Q = M always holds, where a = J/M is the black hole’s intrinsic angular momentum per unit mass, Q its electric charge and M the well known black hole mass parameter introduced by Christodoulou and Ruff...
متن کاملar X iv : 0 70 8 . 26 18 v 1 [ as tr o - ph ] 2 0 A ug 2 00 7 Using Local Volume data to constrain Dark Matter dynamics
متن کامل
ar X iv : 1 00 6 . 37 94 v 3 [ he p - th ] 10 A ug 2 01 0 Holographic metals and the fractionalized Fermi liquid
We show that there is a close correspondence between the physical properties of holographic metals near charged black holes in anti-de Sitter (AdS) space, and the fractionalized Fermi liquid phase of the lattice Anderson model. The latter phase has a ‘small’ Fermi surface of conduction electrons, along with a spin liquid of local moments. This correspondence implies that certain mean-field gapl...
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 2008