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Quantum gravity and charge renormalization

Lookup NU author(s): Professor David Toms

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Abstract

We study the question of the gauge dependence of the quantum gravity contribution to the running gauge coupling constant for electromagnetism. The calculations are performed using dimensional regularization in a manifestly gauge-invariant and gauge-condition-independent formulation of the effective action. It is shown that there is no quantum gravity contribution to the running charge, and hence there is no alteration to asymptotic freedom at high energies as predicted by Robinson and Wilczek.

Publication metadata

Author(s): Toms DJ

Publication type: Article

Publication status: Published

Journal: Physical Review D

Year: 2007

Volume: 76

Issue: 4

ISSN (print): 1550-7998

ISSN (electronic): 1089-4918

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevD.76.045015

DOI: 10.1103/PhysRevD.76.045015

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