Journal
PHYSICAL REVIEW D
Volume 99, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.99.124022
Keywords
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Funding
- STFC Consolidated Grant [ST/P000703/1]
- COST Action GWverse Grant [CA16104]
- EPSRC [2102878] Funding Source: UKRI
- STFC [ST/P000703/1] Funding Source: UKRI
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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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