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Gravitational Casimir energy in non-Abelian Kaluza-Klein theories

Journal Article · · Phys. Rev. D; (United States)
The Casimir energy of the gravitational field in certain Kaluza-Klein theories is computed. Specifically, the one-loop quantum effective potential of the gravitational field on the background manifold (Minkowski space) x (N-sphere) is evaluated as a function of the radius of the N-sphere. (N is restricted to be odd for technical reasons.) Minima of the (real part of the) potential for which the observed cosmological constant is zero are found numerically for N = 13, 15, 17, 19, and 21. The potential has an imaginary part which is attributed to ''tachyonic'' terms in the mode sum, although it is argued that the Faddeev-Popov ghost modes do not contribute to this imaginary part.
Research Organization:
Physics Department, Yale University, New Haven, Connecticut 06511
DOE Contract Number:
AC02-76CH00016
OSTI ID:
5543115
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 31:12; ISSN PRVDA
Country of Publication:
United States
Language:
English