Gravitational waves from the fragmentation of a supersymmetric condensate

Kusenko, Alexander and Mazumdar, Anupam and Multamaki, Tuomas (2009) Gravitational waves from the fragmentation of a supersymmetric condensate. Physical Review D, 79 (12). ISSN 1550-7998

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Abstract

We discuss the production of gravity waves from the fragmentation of a supersymmetric condensate in the early universe. Supersymmetry predicts the existence of flat directions in the potential. At the end of inflation, the scalar fields develop large time-dependent vacuum expectation values along these flat directions. Under some general conditions, the scalar condensates undergo a fragmentation into non-topological solitons, Q-balls. We study this process numerically and confirm the recent analytical calculations showing that it can produce gravity waves observable by Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO), Laser Interferometer Space Antenna (LISA), and Big Bang Observer (BBO). The fragmentation can generate gravity waves with an amplitude as large as Omega_{GW}~10^{-11} and with a peak frequency ranging from mHz to 10 Hz, depending on the parameters. The discovery of such a relic gravitational background radiation can open a new window on the physics at the high scales, even if supersymmetry is broken well above the electroweak scale.

Item Type: Journal Article
Journal or Publication Title: Physical Review D
Additional Information: 13 pages, 5 figures
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 31505
Deposited By: Dr Anupam Mazumdar
Deposited On: 27 Jan 2010 15:52
Refereed?: Yes
Published?: Published
Last Modified: 16 Sep 2019 03:05
URI: https://eprints.lancs.ac.uk/id/eprint/31505

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