Cosmological Constant and Quantum Gravitational Corrections to the Running Fine Structure Constant
Journal Article
·
· Physical Review Letters
- School of Mathematics and Statistics, Newcastle University, Newcastle upon Tyne, NE1 7RU (United Kingdom)
The quantum gravitational contribution to the renormalization group behavior of the electric charge in Einstein-Maxwell theory with a cosmological constant is considered. Quantum gravity is shown to lead to a contribution to the running charge not present when the cosmological constant vanishes. This reopens the possibility, suggested by Robinson and Wilczek, of altering the scaling behavior of gauge theories at high energies although our result differs. We show the possibility of an ultraviolet fixed point that is linked directly to the cosmological constant.
- OSTI ID:
- 21179745
- Journal Information:
- Physical Review Letters, Vol. 101, Issue 13; Other Information: DOI: 10.1103/PhysRevLett.101.131301; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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