Gravitational waves from domain walls and their implications
We evaluate the impact of domain-wall annihilation on the currently ongoing and planned gravitational wave experiments, including a case in which domain walls experience a frictional force due to interactions with the ambient plasma. We show the sensitivity reach in terms of physical parameters, nam...
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Online Access: | http://www.sciencedirect.com/science/article/pii/S037026931730360X |
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doaj-17a9d20420f146a4a455da6cb114530a2020-11-24T22:48:57ZengElsevierPhysics Letters B0370-26931873-24452017-07-01770C50050610.1016/j.physletb.2017.05.010Gravitational waves from domain walls and their implicationsKazunori Nakayama0Fuminobu Takahashi1Norimi Yokozaki2Department of Physics, Faculty of Science, The University of Tokyo, Bunkyo-ku, Tokyo 133-0033, JapanDepartment of Physics, Tohoku University, Sendai, Miyagi 980-8578, JapanDepartment of Physics, Tohoku University, Sendai, Miyagi 980-8578, JapanWe evaluate the impact of domain-wall annihilation on the currently ongoing and planned gravitational wave experiments, including a case in which domain walls experience a frictional force due to interactions with the ambient plasma. We show the sensitivity reach in terms of physical parameters, namely, the wall tension and the annihilation temperature. We find that a Higgs portal scalar, which stabilizes the Higgs potential at high energy scales, can form domain walls whose annihilation produces a large amount of gravitational waves within the reach of the advanced LIGO experiment (O5). Domain wall annihilation can also generate baryon asymmetry if the scalar is coupled to either SU(2)L gauge fields or the (B−L) current. This is a variant of spontaneous baryogenesis, but it naturally avoids the isocurvature constraint due to the scaling behavior of the domain-wall evolution. We delineate the parameter space where the domain-wall baryogenesis works successfully and discuss its implications for the gravitational wave experiments.http://www.sciencedirect.com/science/article/pii/S037026931730360X |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kazunori Nakayama Fuminobu Takahashi Norimi Yokozaki |
spellingShingle |
Kazunori Nakayama Fuminobu Takahashi Norimi Yokozaki Gravitational waves from domain walls and their implications Physics Letters B |
author_facet |
Kazunori Nakayama Fuminobu Takahashi Norimi Yokozaki |
author_sort |
Kazunori Nakayama |
title |
Gravitational waves from domain walls and their implications |
title_short |
Gravitational waves from domain walls and their implications |
title_full |
Gravitational waves from domain walls and their implications |
title_fullStr |
Gravitational waves from domain walls and their implications |
title_full_unstemmed |
Gravitational waves from domain walls and their implications |
title_sort |
gravitational waves from domain walls and their implications |
publisher |
Elsevier |
series |
Physics Letters B |
issn |
0370-2693 1873-2445 |
publishDate |
2017-07-01 |
description |
We evaluate the impact of domain-wall annihilation on the currently ongoing and planned gravitational wave experiments, including a case in which domain walls experience a frictional force due to interactions with the ambient plasma. We show the sensitivity reach in terms of physical parameters, namely, the wall tension and the annihilation temperature. We find that a Higgs portal scalar, which stabilizes the Higgs potential at high energy scales, can form domain walls whose annihilation produces a large amount of gravitational waves within the reach of the advanced LIGO experiment (O5). Domain wall annihilation can also generate baryon asymmetry if the scalar is coupled to either SU(2)L gauge fields or the (B−L) current. This is a variant of spontaneous baryogenesis, but it naturally avoids the isocurvature constraint due to the scaling behavior of the domain-wall evolution. We delineate the parameter space where the domain-wall baryogenesis works successfully and discuss its implications for the gravitational wave experiments. |
url |
http://www.sciencedirect.com/science/article/pii/S037026931730360X |
work_keys_str_mv |
AT kazunorinakayama gravitationalwavesfromdomainwallsandtheirimplications AT fuminobutakahashi gravitationalwavesfromdomainwallsandtheirimplications AT norimiyokozaki gravitationalwavesfromdomainwallsandtheirimplications |
_version_ |
1725677907629572096 |