Path-integral quantization and cosmological particle production: An example

Details Path-integral quantization and cosmological particle production: An example Path-integral quantization and cosmological particle production: An example

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phrvd..16..251c&link_type=abstract

Physical Review D (Particles and Fields), Volume 16, Issue 2, 15 July 1977, pp.251-260

Mathematics

Logic

67

Scientific paper

The Feynman path-integral method is applied to the quantization of a scalar field moving in a cosmological background spacetime. The method is illustrated by computing particle production from the vacuum in a spatially flat, Robertson-Walker spacetime with scale factor R (t)=t. The result is a distribution of produced particle pairs which at large energies becomes a thermal distribution with a temperature T=ℏcπkBR (t). The relation to other methods of quantization is discussed.

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