8,551 research outputs found
Are There Topological Black Hole Solitons in String Theory?
We point out that the celebrated Hawking effect of quantum instability of
black holes seems to be related to a nonperturbative effect in string theory.
Studying quantum dynamics of strings in the gravitational background of black
holes we find classical instability due to emission of massless string
excitations. The topology of a black hole seems to play a fundamental role in
developing the string theory classical instability due to the effect of sigma
model instantons. We argue that string theory allows for a qualitative
description of black holes with very small masses and it predicts topological
solitons with quantized spectrum of masses. These solitons would not decay into
string massless excitations but could be pair created and may annihilate also.
Semiclassical mass quantization of topological solitons in string theory is
based on the argument showing existence of nontrivial zeros of beta function of
the renormalization group.Comment: 12 pages, TeX, requires phyzzx.tex, published in Gen. Rel. Grav. 19
(1987) 1173; comment added on December 18, 199
Marijuana as a Holy Sacrament: Is the Use of Peyote Constitutionally Distinguishable from That of Marijuana in Bona Fide Religious Ceremonies
Marijuana as a Holy Sacrament: Is the Use of Peyote Constitutionally Distinguishable from That of Marijuana in Bona Fide Religious Ceremonies
National Lesbian and Gay Law Foundation Lavender Law 2006 “Rum, Sodomy, and the Lash”: What the Military Thrives on and How it Affects Legal Recruitment and Law Schools
- …