A unique gravitational wave signal from phase transition during inflation
Journal Article
·
· Chinese Physics C, High Energy Physics and Nuclear Physics
- Tsinghua Univ., Beijing (China)
- Hong Kong Univ. (Hong Kong); Univ. of California, Santa Barbara, CA (United States). Kavli Institute for Theoretical Physics
- Univ. of Chicago, IL (United States). Enrico Fermi Inst.; Univ. of Chicago, IL (United States)
- Stockholm Univ. (Sweden)
We study the properties of the gravitational wave (GW) signals produced by first-order phase transitions during the inflation era. We show that the power spectrum of the GW oscillates with its wave number. This signal can be observed directly by future terrestrial and spatial gravitational wave detectors and through the B-mode spectrum in CMB. This oscillatory feature of GW is generic for any approximately instantaneous sources occurring during inflation and is distinct from the GW from phase transitions after the inflation. The details of the GW spectrum contain information about the scale of the phase transition and the later evolution of the universe.
- Research Organization:
- Univ. of Chicago, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); NSFC; National Science Foundation (NSF); Swedish Research Council (SRC)
- Grant/Contract Number:
- SC0009924; 11975134; PHY-1748958; SC0013642; 2015-05333; 2018-03803
- OSTI ID:
- 1735352
- Journal Information:
- Chinese Physics C, High Energy Physics and Nuclear Physics, Vol. 46, Issue 10; ISSN 1674-1137
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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