Gravitational waves from global phase transitions

Details Gravitational waves from global phase transitions Gravitational waves from global phase transitions

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phlb..284..229k&link_type=abstract

Physics Letters B, Volume 284, Issue 3-4, p. 229-233.

Physics

27

Scientific paper

It is shown that causality implies that any global symmetry breaking transition in the early universe should produce, at the horizon, an approximate scale invariant spectrum of gravitational waves - even in the absence of inflation. This can result in, among other effects, a quadrupole anistropy in the cosmic microwave background today. Comparing this with existing upper limits can place a rigid upper limit on the scale of symmetry breaking assoaiated with various scenarios for the formation of large scale structure. The preliminary estimates presented here suggest this limit should be less than 1017 GeV.
Research supported in part by the NSF, DOE, Texas National Research Laboratory Commission, and the Foundation for Physical Science.

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