New nonlocal effective action

Details New nonlocal effective action New nonlocal effective action

2002-03-14

arxiv.org/abs/hep-th/0203132v2

Phys.Rev. D66 (2002) 065007

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, latex, no figures, typos are corrected, presentation improved

Scientific paper

10.1103/PhysRevD.66.065007

We suggest a new method for the calculation of the nonlocal part of the
effective action. It is based on resummation of perturbation series for the
heat kernel and its functional trace at large values of the proper time
parameter. We derive a new, essentially nonperturbative, nonlocal contribution
to the effective action in spacetimes with dimensions $d>2$.

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