Massless scalar fields and topological black holes
نویسندگان
چکیده
منابع مشابه
Massless Scalar Fields and Topological Black Holes Typeset Using Revt E X
The exact static solutions in the higher dimensional Einstein-Maxwell-KleinGordon theory are investigated. With the help of the methods developed for the effective dilaton type gauge gravity models in two dimensions, we find new spherically and hyperbolically symmetric solutions which generalize the four dimensional configurations of Dereli-Eriş. We show that, like in four dimensions, the non-t...
متن کاملCold scalar-tensor black holes coupled to a massless scalar field
New four-dimensional black hole solutions of Brans-Dicke equations with a negative constant ω, coupled to a massless scalar field, are presented. The temperature of these black holes is zero and the horizon area is infinite. An astrophysical application is also discussed. Scalar-tensor theories of gravity are considered as the most natural generalizations of general relativity. From theoretical...
متن کاملThe Connection Between Entropy and the Absorption Spectra of Schwarzschild Black Holes for Light and Massless Scalar Fields
We present heuristic arguments suggesting that if EM waves with wavelengths somewhat larger than the Schwarzschild radius of a black hole were fully absorbed by it, the second law of thermodynamics would be violated, under the Bekenstein interpretation of the area of a black hole as a measure of its entropy. Thus, entropy considerations make the well known fact that large wavelengths are only m...
متن کاملDuality, Enhanced Symmetry and ‘massless Black Holes’
String theory is defined perturbatively through a set of rules for calculating scattering amplitudes. Perhaps the most important outstanding problem is that of finding the non-perturbative theory whose perturbation theory reproduces that of string theory. This seems a daunting task, but recent progress has led to some striking conjectures regarding the non-perturbative structure of the theory t...
متن کاملEntropies of Scalar Fields on Three Dimensional Black Holes
Thermodynamics of scalar fields is investigated in three dimensional black hole backgrounds in two approaches. One is mode expansion and direct computation of the partition sum, and the other is the Euclidean path integral approach. We obtain a number of exact results, for example, mode functions, Hartle-Hawking Green functions on the black holes, Green functions on a cone geometry, free energi...
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: Physical Review D
سال: 2000
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.61.084015