Patterns from preheating

Details Patterns from preheating Patterns from preheating

1998-11-30

arxiv.org/abs/hep-ph/9811520v1

Phys.Rev.Lett. 83 (1999) 666-669

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, RevTex, 6 figures

Scientific paper

10.1103/PhysRevLett.83.666

The formation of regular patterns is a well-known phenomenon in condensed matter physics. Systems that exhibit pattern formation are typically driven and dissipative with pattern formation occurring in the weakly non-linear regime and sometimes even in more strongly non-linear regions of parameter space. In the early universe, parametric resonance can drive explosive particle production called preheating. The fields that are populated then decay quantum mechanically if their particles are unstable. Thus, during preheating, a driven-dissipative system exists. In this paper, we show that a self-coupled inflaton oscillating in its potential at the end of inflation can exhibit pattern formation.

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