Charge Renormalization due to Graviton Loops [PDF]
Gaurav Narain, Ramesh AnishettyThe leading term in perturbation theory to the beta function of the gauge couplings comes due to interaction with gravitons. It is seen to be a universal quantity for all gauge theories to all loops. Using self duality property of abelian gauge theories in four dimensions, we show that this contribution is identically zero to all loops.View original: http://arxiv.org/abs/1211.5040
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