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Gravitational Waves from Composite Dark Sectors

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arxiv 2309.16755 v1 pith:UWPN77BL submitted 2023-09-28 hep-ph astro-ph.COhep-lathep-th

Roman Pasechnik , Manuel Reichert , Francesco Sannino , Zhi-Wei Wang This is my paper
classification hep-phastro-ph.COhep-lathep-th
keywords compositephasetransitionallowsdarkeffectiveeffectsfirst-order
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We study under which conditions a first-order phase transition in a composite dark sector can yield an observable stochastic gravitational-wave signal. To this end, we employ the Linear-Sigma model featuring $N_f=3,4,5$ flavours and perform a Cornwall-Jackiw-Tomboulis computation also accounting for the effects of the Polyakov loop. The model allows us to investigate the chiral phase transition in regimes that can mimic QCD-like theories incorporating in addition composite dynamics associated with the effects of confinement-deconfinement phase transition. A further benefit of this approach is that it allows to study the limit in which the effective interactions are weak. We show that strong first-order phase transitions occur for weak effective couplings of the composite sector leading to gravitational-wave signals potentially detectable at future experimental facilities.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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  4. The equation of state and surface tension of QCD in the first order phase transition region

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