Gravitational waves from domain walls in the next-to-minimal supersymmetric standard model

Journal Article · Thu Oct 01 00:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/10/041· OSTI ID:22525237

Kadota, Kenji ^[1]; Kawasaki, Masahiro ^[2]; Saikawa, Ken'ichi ^[3]

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1. Center for Theoretical Physics of the Universe, Institute for Basic Science, Daejeon 305-811 (Korea, Republic of)
2. Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa City, Chiba 277-8582 (Japan)
3. Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan)

The next-to-minimal supersymmetric standard model predicts the formation of domain walls due to the spontaneous breaking of the discrete Z{sub 3}-symmetry at the electroweak phase transition, and they collapse before the epoch of big bang nucleosynthesis if there exists a small bias term in the potential which explicitly breaks the discrete symmetry. Signatures of gravitational waves produced from these unstable domain walls are estimated and their parameter dependence is investigated. It is shown that the amplitude of gravitational waves becomes generically large in the decoupling limit, and that their frequency is low enough to be probed in future pulsar timing observations.

• OSTI ID: 22525237
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
AMPLITUDES
DECOUPLING
GRAVITATIONAL WAVES
NUCLEOSYNTHESIS
PHASE TRANSFORMATIONS
POTENTIALS
PROBES
PULSARS
STANDARD MODEL
SUPERSYMMETRY