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Running couplings from adiabatic regularization
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DOI：10.1016/j.physletb.2019.03.026.png)
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摘要
En 中文
We extend the adiabatic regularization method by introducing an arbitrary mass scale mu in the construction of the subtraction terms. This allows us to obtain, in a very robust way, the running of the coupling constants by demanding mu-invariance of the effective semiclassical (Maxwell-Einstein) equations. In particular, we get the running of the electric charge of perturbative quantum electrodynamics. Furthermore, the method brings about a renormalization of the cosmological constant and the Newtonian gravitational constant. The running obtained for these dimensionful coupling constants has new relevant (non-logarithmic) contributions, not predicted by dimensional regularization. (C) 2019 The Author(s). Published by Elsevier B.V.
Keyword:
Adiabatic renormalization
Running couplings
Semiclassical Maxwell-Einstein equations
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期刊
IF:
4.5
论文数:
3.2W
被引数:
7.3W
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