0567201 - FZÚ 2023 RIV GB eng J - Článek v odborném periodiku
Babichev, E. - Gorbunov, D. - Ramazanov, Sabir - Vikman, AlexanderGravitational shine of dark domain walls.
Journal of Cosmology and Astroparticle Physics. Roč. 2022, č. 4 (2022), č. článku 028. ISSN 1475-7516. E-ISSN 1475-7516
Grant CEP: GA MŠMT EF15_003/0000437; GA ČR(CZ) GJ20-16531Y
Grant ostatní: OP VVV - CoGraDS(XE) CZ.02.1.01/0.0/0.0/15_003/0000437
Institucionální podpora: RVO:68378271
Klíčová slova: cosmic strings * domain walls * monopoles * dark matter theory
Obor OECD: Particles and field physics
Impakt faktor: 6.3, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1088/1475-7516/2022/04/028Cosmic domain walls are harmless, provided that their tension decreases with expansion of the Universe. This setup can be realized, if the scale of spontaneous symmetry breaking is induced dynamically through the interaction with hot primordial plasma. In that case, the domain wall tension can attain large values in the early Universe without any conflict with observations. Owing to the large initial tension, these topological defects may serve as a powerful source of gravitational waves. We make a preliminary estimate of the gravitational wave spectrum and argue that it is distinct from the spectrum produced by other sources, in particular by domain walls of a constant tension. The resulting gravitational wave signal is in the range accessible by Einstein Telescope, DECIGO, TianQin, LISA, IPTA, or SKA, if the field constituting the domain walls is very feebly coupled with hot primordial plasma and has tiny self-interactions.
Trvalý link: https://hdl.handle.net/11104/0338491
