Goldstone bosons in string models of galaxy formation

Details Goldstone bosons in string models of galaxy formation Goldstone bosons in string models of galaxy formation

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvd..32.3172d&link_type=abstract

Physical Review D (Particles and Fields), Volume 32, Issue 12, 15 December 1985, pp.3172-3177

Physics

88

Spontaneous Breaking Of Gauge Symmetries, Origin And Formation Of The Universe

Scientific paper

One reason why cosmic strings are interesting is because they may provide the primordial density fluctuations that began the process of galaxy formation. For the scenario in which galaxies condense around oscillating closed loops it is necessary that gravitational radiation be the dominant energy-loss mechanism. It is shown that loops of strings from a broken exact global symmetry decay too quickly to serve this purpose. Loops of strings from a broken gauge symmetry may have Goldstone-boson couplings as well. It is shown that the decay rate of these strings due to Goldstone-boson emission is strongly suppressed. This supports the conjecture that gauge strings may seed galaxy formation.

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