Oscillons and quasi-breathers in D+1 dimensions

Saffin, Paul M. and Tranberg, Anders (2007) Oscillons and quasi-breathers in D+1 dimensions. Journal of High Energy Physics, 2007 (01). 030. ISSN 1029-8479

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We study oscillons in D+1 space-time dimensions using a spherically symmetric ansatz. From Gaussian initial conditions, these evolve by emitting radiation, approaching ``quasi-breathers'', near-periodic solutions to the equations of motion. Using a truncated mode expansion, we numerically determine these quasi-breather solutions in 2<D<6 and the energy dependence on the oscillation frequency. In particular, this energy has a minimum, which in turn depends on the number of spatial dimensions. We study the time evolution and lifetimes of the resulting quasi-breathers, and show how generic oscillons decay into these before disappearing altogether. We comment on the apparent absence of oscillons for D>5 and the possibility of stable solutions for D<2.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1088/1126-6708/2007/01/030
Depositing User: Saffin, Dr Paul
Date Deposited: 21 Apr 2017 10:13
Last Modified: 12 Oct 2017 22:35
URI: https://eprints.nottingham.ac.uk/id/eprint/42116

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