Gravitational waves triggered by $B-L$ charged hidden scalar and leptogenesis

Bian, Ligong; Cheng, Wei; Guo, Huai-Ke; Zhang, Yongchao

doi:10.48550/arxiv.1907.13589

Cited by 6 publications

(7 citation statements)

References 88 publications

(121 reference statements)

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“…Note that they are also poised to probe hidden sector transitions[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] and transitions from multi-step GUT breaking[44][45][46][47].…”

mentioning

confidence: 99%

Phase transitions in an expanding universe: stochastic gravitational waves in standard and non-standard histories

Guo

Sinha

Vagie

et al. 2021

J. Cosmol. Astropart. Phys.

169

138

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We undertake a careful analysis of stochastic gravitational wave production from cosmological phase transitions in an expanding universe, studying both a standard radiation as well as a matter dominated history. We analyze in detail the dynamics of the phase transition, including the false vacuum fraction, bubble lifetime distribution, bubble number density, mean bubble separation, etc., for an expanding universe. We also study the full set of differential equations governing the evolution of plasma and the scalar field during the phase transition and generalize results obtained in Minkowski spacetime. In particular, we generalize the sound shell model to the expanding universe and determine the velocity field power spectrum. This ultimately provides an accurate calculation of the gravitational wave spectrum seen today for the dominant source of sound waves. For the amplitude of the gravitational wave spectrum visible today, we find a suppression factor arising from the finite lifetime of the sound waves and compare with the commonly used result in the literature, which corresponds to the asymptotic value of our suppression factor. We point out that the asymptotic value is only applicable for a very long lifetime of the sound waves, which is highly unlikely due to the onset of shocks, turbulence and other damping processes. We also point out that features of the gravitational wave spectral form may hold the tantalizing possibility of distinguishing between different expansion histories using phase transitions.

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“…Note that they are also poised to probe hidden sector transitions[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] and transitions from multi-step GUT breaking[44][45][46][47].…”

mentioning

confidence: 99%

Phase transitions in an expanding universe: stochastic gravitational waves in standard and non-standard histories

Guo

Sinha

Vagie

et al. 2021

J. Cosmol. Astropart. Phys.

169

138

View full text Add to dashboard Cite

show abstract

“…Note that they are also poised to probe hidden sector transitions[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] and transitions from multi-step GUT breaking[44][45][46][47] …”

mentioning

confidence: 99%

Phase Transitions in an Expanding Universe: Stochastic Gravitational Waves in Standard and Non-Standard Histories

Guo,

Sinha,

Vagie

et al. 2020

Preprint

Self Cite

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We undertake a careful analysis of stochastic gravitational wave production from cosmological phase transitions in an expanding universe, studying both a standard radiation as well as a matter dominated history. We analyze in detail the dynamics of the phase transition, including the false vacuum fraction, bubble lifetime distribution, bubble number density, mean bubble separation, etc., for an expanding universe. We also study the full set of differential equations governing the evolution of plasma and the scalar field during the phase transition and generalize results obtained in Minkowski spacetime. In particular, we generalize the sound shell model to the expanding universe and determine the velocity field power spectrum. This ultimately provides an accurate calculation of the gravitational wave spectrum seen today for the dominant source of sound waves. For the amplitude of the gravitational wave spectrum visible today, we find a suppression factor arising from the finite lifetime of the sound waves and compare with the commonly used result in the literature, which corresponds to the asymptotic value of our suppression factor. We point out that the asymptotic value is only applicable for a very long lifetime of the sound waves, which is highly unlikely due to the onset of shocks, turbulence and other damping processes. We also point out that features of the gravitational wave spectral form may hold out the tantalizing possibility of distinguishing between different expansion histories using phase transitions.

show abstract

“…(4.12): In simple terms, the larger quantum (also thermal) correction benefits thermal tunneling. This behavior is explained by the narrower of the barrier, i.e., the shorter escaping path 11 , with the increasing λ sx ; one can find its evidence in Fig. 3.…”

Section: Condition For Csipt Completionmentioning

confidence: 76%

Scale-genesis by Dark Matter and Its Gravitational Wave Signal

Kang,

Zhu

2020

Preprint

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Classical scale invariance (CSI) may shed light on the weak scale origin, but the realistic CSI extension to the standard model requires a bosonic trigger. We propose a scalar Dark Matter(DM) field X as the trigger, establishing a strong connection between the successful radiative breaking of CSI and DM phenomenologies. The latter forces the breaking scale to ∼ O(TeV). It brightens the test prospect of this scenario via gravitational wave, a sharp prediction of CSI phase transition (CSIPT), which is first order and has strong supercooling. Moreover, we carefully deal with some techniques which are commonly used to analyze CSIPT but maybe missed. In particular, we clarify the imprecision of Witten's formula used in the single field case to calculate the bubble nucleation rate and stress that the essence of Witten's approximation is the validity of high temperature expansion.

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Gravitational waves triggered by $B-L$ charged hidden scalar and leptogenesis

Cited by 6 publications

References 88 publications

Phase transitions in an expanding universe: stochastic gravitational waves in standard and non-standard histories

Phase transitions in an expanding universe: stochastic gravitational waves in standard and non-standard histories

Phase Transitions in an Expanding Universe: Stochastic Gravitational Waves in Standard and Non-Standard Histories

Scale-genesis by Dark Matter and Its Gravitational Wave Signal

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