Gravitational waves from asymmetric oscillon dynamics?
- Rice Univ., Houston, TX (United States); Rice University
- Univ. College London (United Kingdom)
- Univ. of Nottingham (United Kingdom)
- Kenyon College, Gambier, OH (United States); Case Western Reserve Univ., Cleveland, OH (United States)
- Kenyon College, Gambier, OH (United States)
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Univ. of Science and Technology of China, Hefei (China)
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 new finding prompts the need for a more careful analysis of the numerical validity of other similar results related to gravitational waves from oscillon dynamics.
- Research Organization:
- Rice Univ., Houston, TX (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0018216
- OSTI ID:
- 1594809
- Alternate ID(s):
- OSTI ID: 1541187; OSTI ID: 1461244
- Journal Information:
- Physical Review D, Journal Name: Physical Review D Journal Issue: 2 Vol. 98; ISSN PRVDAQ; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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