Numerical Studies on Core Collapse Supernova in Self-interacting Massive Scalar-Tensor Gravity. (arXiv:1812.04835v1 [gr-qc])
<a href="http://arxiv.org/find/gr-qc/1/au:+Cheong_P/0/1/0/all/0/1">Patrick Chi-Kit Cheong</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Li_T/0/1/0/all/0/1">Tjonnie Guang Feng Li</a>
We investigate stellar core collapse in scalar-tensor theory with a massive
self-interacting scalar field. In these theories, strong long-lived inverse
chirp signals could be induced during the stellar core-collapse which provides
us with several potential smoking-gun signatures that could be found using
current ground-based detectors. We show that the existence of self-interaction
in the potential of the scalar field can significantly suppress spontaneous
scalarization and the amplitude of the monopole gravitational wave radiation.
Moreover, this suppression due to self interaction is frequency dependent and
may be discernible in LIGO/Virgo’s sensitive band. Therefore, self-interaction
should be considered when constraining scalar-tensor coupling parameters with
gravitational-wave detections. Alternatively, if such monopole
gravitational-wave signals are detected, then one may be able to infer the
presence of self-interaction.
We investigate stellar core collapse in scalar-tensor theory with a massive
self-interacting scalar field. In these theories, strong long-lived inverse
chirp signals could be induced during the stellar core-collapse which provides
us with several potential smoking-gun signatures that could be found using
current ground-based detectors. We show that the existence of self-interaction
in the potential of the scalar field can significantly suppress spontaneous
scalarization and the amplitude of the monopole gravitational wave radiation.
Moreover, this suppression due to self interaction is frequency dependent and
may be discernible in LIGO/Virgo’s sensitive band. Therefore, self-interaction
should be considered when constraining scalar-tensor coupling parameters with
gravitational-wave detections. Alternatively, if such monopole
gravitational-wave signals are detected, then one may be able to infer the
presence of self-interaction.
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