Symmetric multifield oscillons
arXiv:2010.07789 · doi:10.1103/PhysRevD.106.096018
Abstract
Oscillons are long-lived, spatially localized field configurations, which are supported by attractive non-linearities in the scalar potential. We study oscillons comprised of multiple interacting fields, each having an identical potential with quadratic, quartic and sextic terms. We consider quartic interaction terms of either attractive or repulsive nature. In the two-field case, we construct semi-analytical oscillon profiles for different values of the potential parameters and coupling strength using the two-timing small-amplitude formalism. We use analytical and numerical techniques to explore the basin of attraction of stable oscillon solutions and show that, depending on the initial perturbation size, unstable oscillons can either completely disperse or relax to the closest stable configuration. We generalize our analysis to multifield oscillons and show that the governing equations for their shape and stability can be mapped to the ones arising in the two-field case. Finally, we study the emergence of multicomponent oscillons in one and three spatial dimensions, both numerically and through Floquet theory.
46 pages, 21 figures, improvements and edits corresponding to the published version
References in corpus (15)
- The Unity of Cosmological Attractors
- Quantum Radiation of Oscillons
- Flat-top oscillons in an expanding universe
- Gravitational perturbations from oscillons and transients after inflation
- Gravitational Waves from Oscillons with Cuspy Potentials
- An Electroweak Oscillon
- Classical Decay Rates of Oscillons
- Generation of Coherent Structures After Cosmic Inflation
- Decay of I-ball/Oscillon in Classical Field Theory
- Numerical Simulation of an Electroweak Oscillon
- Gravitational wave spectra from oscillon formation after inflation
- Recipes for Oscillon Longevity
- Charge-Swapping Q-balls and Their Lifetimes
- Symmetric solitonic excitations of the (1+1)-dimensional Abelian-Higgs "classical vacuum"
- Analysis of Oscillons in the SU(2) Gauged Higgs Model