Speaker
Rinku Maji
(Jeonbuk National University)
Description
We discuss the stochastic gravitational wave background emitted from a network of 'quasi-stable' strings and its realization in grand unified theories. A symmetry breaking in the early universe produces monopoles that suffer partial inflation. A subsequent symmetry breaking at a lower energy scale creates cosmic strings which are effectively stable against the breaking via Schwinger monopole-pair creation. As the monopoles reenter the horizon, we will have monopole-antimonopoles connected by strings and further loop formation essentially ceases. As a consequence, the lower frequency part of the gravitational wave spectrum will be suppressed in comparison with that from topologically stable cosmic strings.
| Secondary category for the parallel session (optional) | BSM Theories |
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Primary author
Rinku Maji
(Jeonbuk National University)
Co-authors
Prof.
George Lazarides
(Aristotle University of Thessaloniki)
Prof.
Qaisar Shafi
(University of Delaware)
