Microwave Background Constraints on Decaying Defects

Details Microwave Background Constraints on Decaying Defects Microwave Background Constraints on Decaying Defects

2002-02-17

arxiv.org/abs/hep-ph/0202168v1

Phys.Lett. B534 (2002) 1-7

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 0 figures

Scientific paper

10.1016/S0370-2693(02)01675-1

Embedded defects are predicted in a host of particle physics theories, in particular in the standard electroweak theory. They can be stabilized by interactions with the cosmological plasma, but will decay once the plasma falls out of equilibrium, emitting a substantial fraction of non-thermal photons. If the decay happens after a redshift of about $10^6$, these photons will give rise to spectral distortions of the Cosmic Microwave Background, which leads to strong constraints on the underlying particle physics theory. Such constraints apply to any model with decaying defects, and in particular to theories predicting decaying vortons, thereby leading to constraints stronger than the dark matter limit.

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