Gravitational particle production by cosmic strings

Details Gravitational particle production by cosmic strings Gravitational particle production by cosmic strings

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nuphb.339..560g&link_type=abstract

Nuclear Physics B, Volume 339, Issue 2, p. 560-576.

Physics

Nuclear Physics

13

Scientific paper

We apply a perturbative treatment of quantum field theory in the presence of weak time-dependent gravitational fields to determine the rate of particle production by cosmic strings of several different types. We evaluate the effect that occurs during the formation of both gauge and global strings, while a current grows along a superconducting string, and by the oscillations of loops as well. The gravitational field of strings can produce very energetic particles, even at present times, but the flux would be too small to have observable consequences.

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