Parametric instability of the real scalar pulsons

被引：12

作者：

Koutvitsky, VA ^{[1
]}

Maslov, EM ^{[1
]}

机构：

[1] IZMIRAN, Troitsk 142190, Moscow Region, Russia

来源：

PHYSICS LETTERS A | 2005年 / 336卷 / 01期

关键词：

nonlinear Klein-Gordon equation; pulsons; stability;

D O I：

10.1016/j.physleta.2004.12.083

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate stability of localized time-periodic states (pulsons) of a real scalar field satisfying the Klein-Gordon equation with the logarithmic nonlinearity. It is shown that the pulsons of any amplitudes, remaining well-localized objects, lose their coherence with time. We thus conclude that, strictly speaking, all pulsons of the model considered are unstable. Nevertheless, for some amplitudes the rate of the coherence breaking is found to be very small, so that the corresponding pulsons are long-lived. (C) 2005 Published by Elsevier B.V.

引用

页码：31 / 36

页数：6

共 19 条

[1] INFLATIONARY MODELS WITH LOGARITHMIC POTENTIALS [J].