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A unique gravitatio...
A unique gravitational wave signal from phase transition during inflation*
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An, Haipeng (author)
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Lyu, Kun-Feng (author)
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Wang, Lian-Tao (author)
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- Zhou, Siyi (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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(creator_code:org_t)
- IOP Publishing, 2022
- 2022
- English.
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In: Chinese Physics C. - : IOP Publishing. - 1674-1137 .- 2058-6132. ; 46:10
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We study the properties of gravitational wave (GW) signals produced by first-order phase transitions during the inflation era. We show that the power spectrum of a GW oscillates with its wave number. This signal can be observed directly by future terrestrial and spatial GW detectors and through the B-mode spectrum in the CMB. This oscillatory feature of the GW is generic for any approximately instantaneous sources occurring during inflation and is distinct from the GW from phase transitions after inflation. The details of the GW spectrum contain information about the scale of the phase transition and the later evolution of the universe.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- gravitational waves
- inflation
- phase transition
Publication and Content Type
- ref (subject category)
- art (subject category)
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