New form for the coincidence limit of the Feynman propagator, or heat kernel, in curved spacetime

Details New form for the coincidence limit of the Feynman propagator, or heat kernel, in curved spacetime New form for the coincidence limit of the Feynman propagator, or heat kernel, in curved spacetime

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvd..31..953p&link_type=abstract

Physical Review D (Particles and Fields), Volume 31, Issue 4, 15 February 1985, pp.953-956

Other

59

Other Topics In Mathematical Methods In Physics, Theory Of Quantized Fields

Scientific paper

We conjecture that the coincidence limit of the heat kernel (or the kernel of the Feynman propagator) in curved spacetime can be written in a new form in which the coefficients of the proper-time series have no terms containing the scalar curvature R. This effectively sums all terms containing R. We prove our conjecture to third order in the proper time. This permits one to obtain certain nonlocal effects in a general curved spacetime through a one-loop calculation.

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