Effects of gravitational back reaction on small-scale structure of cosmic strings

Details Effects of gravitational back reaction on small-scale structure of cosmic strings Effects of gravitational back reaction on small-scale structure of cosmic strings

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvd..43.3785q&link_type=abstract

Physical Review D (Particles and Fields), Volume 43, Issue 12, 15 June 1991, pp.R3785-R3788

Physics

8

Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

We compute the gravitational back reaction on cosmic strings carrying kinks and show that it limits the growth of small-scale structure. A ``two-scale'' scaling solution results, with small-scale structure and loop formation scaling as ΓkGμ times the horizon, where Γk~50. Kinks of all opening angles decay in a time scale τ~l/(ΓkGμ), where l is the typical interkink distance. There are no more than (ΓkGμ)-1 kinks per horizon length of long string. Gravitational radiation from the long strings is dominated by emission from small scales and is similar, both in frequency and amplitude, to that from loops chopped off the network.

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