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Showing 1996 · astro-phShow all
3 papers · 2 filters
astro-ph1996
Cosmic Defects
Alexander Vilenkin
A (very) brief review of topological defects and their possible cosmic roles. I emphasize in particular that superheavy defects needed for structure formation can peacefully coexis…
astro-ph1996★ 58 cited
Gravitational wave background from hybrid topological defects
Xavier Martin, Alex Vilenkin
We investigate the spectrum of stochastic gravitational wave background generated by hybrid topological defects: domain walls bounded by strings and monopoles connected by strings.…
astro-ph1996★ 50 cited
Probability Distribution for in Open-universe Inflation
Alexander Vilenkin, Serge Winitzki
The problem of making predictions in eternally inflating universe that thermalizes by bubble nucleation is considered. A recently introduced regularization procedure is applied to…