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Gravitational waves from asymmetric oscillon dynamics?

Amin, Mustafa A.; Braden, Jonathan; Copeland, Edmund J.; Giblin, John T.; Solorio, Christian; Weiner, Zachary J.; Zhou, Shuang-Yong


Mustafa A. Amin

Jonathan Braden

John T. Giblin

Christian Solorio

Zachary J. Weiner

Shuang-Yong Zhou



It has been recently suggested that oscillons produced in the early universe from certain asymmetric potentials continue to emit gravitational waves for a number of e-folds of expansion after their formation, leading to potentially detectable gravitational wave signals. We revisit this claim by conducting a convergence study using graphics processing unit (GPU)-accelerated lattice simulations and show that numerical errors accumulated with time are significant in low-resolution scenarios, or in scenarios where the run-time causes the resolution to drop below the relevant scales in the problem. Our study determines that the dominant, growing high frequency peak of the gravitational wave signals in the fiducial "hill-top model" in [arXiv:1607.01314] is a numerical artifact. This finding prompts the need for a more careful analysis of the numerical validity of other similar results related to gravitational waves from oscillon dynamics.

Journal Article Type Article
Publication Date Jul 23, 2018
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 98
Issue 2
Article Number 024040
Pages 1-6
APA6 Citation Amin, M. A., Braden, J., Copeland, E. J., Giblin, J. T., Solorio, C., Weiner, Z. J., & Zhou, S. (2018). Gravitational waves from asymmetric oscillon dynamics?. Physical Review D, 98(2), 1-6.
Keywords Physics and Astronomy (miscellaneous)
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