Spontaneous scalarization in generalized scalar-tensor theory
Spontaneous scalarization in generalized scalar-tensor theory
复制标题
广义标量张量理论中的自发标量化
DOI:
10.1103/physrevd.99.124022
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发表时间:
2019
影响因子:
5
通讯作者:
Andreou N
中科院分区:
文献类型:
--
作者:
Andreou N
Spontaneous scalarization is a mechanism that endows relativistic stars and black holes with a nontrivial configuration only when their spacetime curvature exceeds some threshold. The standard way to trigger spontaneous scalarization is via a tachyonic instability at the linear level, which is eventually quenched due to the effect of nonlinear terms. In this paper, we identify all of the terms in the Horndeski action that contribute to the (effective) mass term in the linearized equations and, hence, can cause or contribute to the tachyonic instability that triggers scalarization.
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