TY - JOUR
T1 - Gravitational waves from global phase transitions
AU - Krauss, Lawrence M.
N1 - Funding Information:
In this letter, I describe another mechanism for the generation of gravitational waves - and anisotropies in the microwave background - which appears to be ubiquitous (i.e,, it should occur whenever a global phase transition is not completed through an infla- Research supported in part by the NSF, DOE, Texas National Research Laboratory Commission, and the Foundation for Physical Science.
PY - 1992/6/25
Y1 - 1992/6/25
N2 - 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.
AB - 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.
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U2 - 10.1016/0370-2693(92)90425-4
DO - 10.1016/0370-2693(92)90425-4
M3 - Article
AN - SCOPUS:0004446373
SN - 0370-2693
VL - 284
SP - 229
EP - 233
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -