Gravitational waves from colliding vacuum bubbles in gauge theories
Keyword(s):
AbstractWe study production of gravitational waves (GWs) in strongly supercooled cosmological phase transitions in gauge theories. We extract from two-bubble lattice simulations the scaling of the GW source, and use it in many-bubble simulations in the thin-wall limit to estimate the resulting GW spectrum. We find that in presence of the gauge field the GW source decays with bubble radius as $$\propto R^{-3}$$ ∝ R - 3 after collisions. This leads to a GW spectrum that follows $$\Omega _{\mathrm{GW}} \propto \omega ^{2.3}$$ Ω GW ∝ ω 2.3 at low frequencies and $$\Omega _{\mathrm{GW}} \propto \omega ^{-2.9}$$ Ω GW ∝ ω - 2.9 at high frequencies, marking a significant deviation from the popular envelope approximation.
2007 ◽
Vol 22
(13)
◽
pp. 2361-2381
◽
2015 ◽
Vol 804
◽
pp. 25-29
◽
Keyword(s):
1993 ◽
Vol 107
(3)
◽
pp. 179-182
◽
2016 ◽
Vol 2016
(09)
◽
pp. 017-017
◽
2017 ◽
Vol 26
(12)
◽
pp. 1742005
◽
Keyword(s):
1989 ◽
Vol 04
(14)
◽
pp. 1343-1353
◽
Keyword(s):