de Sitter时空中的非拓扑孤立子

Nontopological Solitons in de Sitter Spacetimes

在deSitter时空中研究了带有自相互作用势的非拓扑孤立子,推导了描述非拓扑孤立子的场方程,在非拓扑孤立子的边界条件下,通过讨论方程的级数解,证明这些非拓扑孤立子在deSitter时空中不能存在。

In this letter the nontopological solitons with a self-interaction potential are investigated in a static de Sitter spacetime and their field equations are derived. In particular,with series expansion we prove analytically the nonexistence of the solutions under the boundary conditions ,which show that some nontopological solitons can not live in the background.