Formation, gravitational clustering, and interactions of nonrelativistic solitons in an expanding universe
Abstract
We investigate the formation, gravitational clustering and interactions of solitons in a self-interacting, non-relativistic scalar field in an expanding universe. Rapid formation of large number of solitons is driven by attractive self-interactions of the field, whereas the slower clustering of solitons is driven by gravitational forces. Driven closer together by gravity, we see a rich plethora of dynamics in the soliton "gas" including mergers, scatterings and formation of soliton binaries. The numerical simulations are complemented by analytic calculations and estimates of (i) the relevant instability length and time scales, (ii) individual soliton profiles and their stability, (iii) number density of produced solitons, and (iv) the two point correlation function of soliton positions as evidence for gravitational clustering.
- Authors:
-
- Rice Univ., Houston, TX (United States)
- Princeton Univ., NJ (United States)
- Publication Date:
- Research Org.:
- Rice Univ., Houston, TX (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- OSTI Identifier:
- 1594812
- Alternate Identifier(s):
- OSTI ID: 1560778; OSTI ID: 1594813
- Grant/Contract Number:
- SC0018216; PF7-180164; NAS8-03060; PHY-1607611
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 100; Journal Issue: 6; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; Axions; Classical solutions in field theory; Dark matter; Inflation; Large scale structure of the Universe; Pattern formation
Citation Formats
Amin, Mustafa A., and Mocz, Philip. Formation, gravitational clustering, and interactions of nonrelativistic solitons in an expanding universe. United States: N. p., 2019.
Web. doi:10.1103/PhysRevD.100.063507.
Amin, Mustafa A., & Mocz, Philip. Formation, gravitational clustering, and interactions of nonrelativistic solitons in an expanding universe. United States. doi:10.1103/PhysRevD.100.063507.
Amin, Mustafa A., and Mocz, Philip. Mon .
"Formation, gravitational clustering, and interactions of nonrelativistic solitons in an expanding universe". United States. doi:10.1103/PhysRevD.100.063507. https://www.osti.gov/servlets/purl/1594812.
@article{osti_1594812,
title = {Formation, gravitational clustering, and interactions of nonrelativistic solitons in an expanding universe},
author = {Amin, Mustafa A. and Mocz, Philip},
abstractNote = {We investigate the formation, gravitational clustering and interactions of solitons in a self-interacting, non-relativistic scalar field in an expanding universe. Rapid formation of large number of solitons is driven by attractive self-interactions of the field, whereas the slower clustering of solitons is driven by gravitational forces. Driven closer together by gravity, we see a rich plethora of dynamics in the soliton "gas" including mergers, scatterings and formation of soliton binaries. The numerical simulations are complemented by analytic calculations and estimates of (i) the relevant instability length and time scales, (ii) individual soliton profiles and their stability, (iii) number density of produced solitons, and (iv) the two point correlation function of soliton positions as evidence for gravitational clustering.},
doi = {10.1103/PhysRevD.100.063507},
journal = {Physical Review D},
number = 6,
volume = 100,
place = {United States},
year = {2019},
month = {9}
}
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