Author:
van Dissel Fabio,Pujolàs Oriol,Sfakianakis Evangelos I.
Abstract
Abstract
The sine-Gordon model in 3+1 dimensions is known to admit two oscillons of different energy and frequency but comparable lifetime. We show that the oscillon spectrum includes more spherically symmetric “states”. We identify new high-amplitude oscillons by allowing the field profile to have a number of nodes. For each number of nodes, we find 2 states with a comparable lifetime to the nodeless ones. Oscillons with nodes are, however, unstable to non-spherical perturbations and so their lifetime is significantly reduced. Interestingly, these states are seen to fragment into a collection of nodeless oscillons. The heavy nodeless oscillon is quite remarkable: despite its energy, it is stable against fragmentation. Moreover, it has considerably small oscillation frequency, meaning that it can be interpreted as a rather relativistic bound state.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference52 articles.
1. I.L. Bogolyubsky and V.G. Makhankov, On the Pulsed Soliton Lifetime in Two Classical Relativistic Theory Models, JETP Lett. 24 (1976) 12 [INSPIRE].
2. I.L. Bogolyubsky and V.G. Makhankov, Dynamics of Heavy Spherically-Symmetric Pulsons, Pisma Zh. Eksp. Teor. Fiz. 25 (1977) 120 [INSPIRE].
3. M. Gleiser, Pseudostable bubbles, Phys. Rev. D 49 (1994) 2978 [hep-ph/9308279] [INSPIRE].
4. E.W. Kolb and I.I. Tkachev, Nonlinear axion dynamics and formation of cosmological pseudosolitons, Phys. Rev. D 49 (1994) 5040 [astro-ph/9311037] [INSPIRE].
5. E.J. Copeland, M. Gleiser and H.-R. Muller, Oscillons: Resonant configurations during bubble collapse, Phys. Rev. D 52 (1995) 1920 [hep-ph/9503217] [INSPIRE].
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献