Gravitational waves from the first order electroweak phase transition in the Z<sub>3</sub> symmetric singlet scalar model

Matsui, Toshinori

doi:10.1051/epjconf/201816805001

Cited by 6 publications

(6 citation statements)

References 22 publications

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“…Such a model was considered in Ref. [232] in the context of gravitational waves. Finally, there is the case where one has a a symmetry at zero temperature is broken at an intermediate temperature (and then possibly restored at high temperature).…”

Section: Multistep Phase Transitionsmentioning

confidence: 99%

“…One can also break two different symmetries in subsequent transitions such as the case where the standard model is extended by a singlet field with a discrete Z 2 symmetry where V(φ) = V(−φ). Such a model was considered in [229] in the context of gravitational waves. Finally, there is the case where one has a a symmetry at zero temperature is broken at an intermediate temperature (and then possibly restored at high temperature).…”

Section: Multistep Phase Transitionsmentioning

confidence: 99%

“…A phase transition with a peak frequency visible by LIGO/VIRGO can be motivated by vacuum stability [363], split supersymmetry [364], a Pati-Salam transition [365] or neutrino masses [366,367]. Lisa probes both the electroweak phase transition [229,280,337,[368][369][370][371][372][373][374][375][376][377][378][379][380][381][382][383][384], dark phase transitions [360,[385][386][387][388][389][390][391] other low scale symmetry breaking [392][393][394][395], multistep transitions [229] and multistep phase transitions [228,229] whereas pulsar timing arrays can probe supercooled electroweak phase transitions and the QCD phase transition [300,396,397]. To probe the scale in between Lisa and LIGO/VIRGO, several other experiments have been proposed including Magis [398], BBO…”

Section: Gravitational Wavesmentioning

confidence: 99%

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Review of cosmic phase transitions: their significance and experimental signatures

Mazumdar

White²

2019

Rep. Prog. Phys.

208

195

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The study of cosmic phase transitions are of central interest in modern cosmology. In the standard model of cosmology the Universe begins in a very hot state, right after at the end of inflation via the process of reheating/preheating, and cools to its present temperature as the Universe expands. Both new and existing physics at any scale can be responsible for catalyzing either first, second or cross over phase transition, which could be either thermal or non-thermal with a potential observable imprints. Thus this field prompts a rich dialogue between gravity, particle physics and cosmology. It is all but certain that at least two cosmic phase transitions have occurred -the electroweak and the QCD phase transitions. The focus of this review will be primarily on phase transitions above such scales, We review different types of phase transitions that can appear in our cosmic history, and their applications and experimental signatures in particular in the context of exciting gravitational waves, which could be potentially be constrained by LIGO/VIRGO, Kagra, and eLISA.Let us briefly summarize the early Universe cosmology in chronological order. How the Universe began remains a profound question, for which we do not have direct experimental evidence yet. Nonetheless, we can speculate based on sound physical arguments and the observations confirmed by the detection of cosmic microwave background (CMB) radiation [46,47]. How did the Universe begin?Einstein's theory of gravity (GR) is extremely successful in the infrared (IR) matching of all possible observables [48], including the recent discovery of gravitational waves from mergers of two blackholes [49], and binary neutron star mergers [50]. However at short distances and small time scales, i.e. in the ultraviolet (UV), GR has pathologies, besides being a non-renormalizable theory, GR introduces cosmological and blackhole singularities, see [51], and in some cases naked singularities, see [52]. In GR, our Universe has a distinct starting point, a singular spacetime -as long as all the standard energy conditions are always satisfied, i.e. strong, weak, and null energy conditions, see [51]. It is possible to address the cosmological singularity problem without violating the matter energy conditions by weakening the gravitational interaction in the UV. This can happen in ghost free infinite derivative gravity inspired from string field theory [53,54]. There could be two consequences for such study; one could be a realization of a non-singular bounce [55,56], and the other scenario would be that Universe could be frozen in time in the UV, such that the Universe becomes conformal as t → 0 [57]. Bouncing cosmologies and cosmological density perturbations have been reviewed in this nice review [58,59]. There is a strong indication that this non-singular initial phase of the Universe has a key role to play towards understanding the subsequent phases of the Universe such as cosmic inflation, horizon, homogeneity and isotropy of the Universe , to create appropriate initial co...

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Section: Multistep Phase Transitionsmentioning

confidence: 99%

Section: Multistep Phase Transitionsmentioning

confidence: 99%

Section: Gravitational Wavesmentioning

confidence: 99%

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Review of cosmic phase transitions: their significance and experimental signatures

Mazumdar

White²

2019

Rep. Prog. Phys.

208

195

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“…Most work thus far has considered the electroweak phase transition (EWPT), since a strongly first order electroweak phase transition can catalyze electroweak baryogenesis [7][8][9][10] providing an explanation for matter anti-matter asymmetry observed today [8,9,[11][12][13][14][15][16]. The phenomenology of EWPTs have been studied abundantly [17][18][19][20][21][22][23][24][25][26][27] and the GW production has recently been advanced theoretically [28] and through lattice simulations [29,30]. From these results, it has become clear that the successfulness of electroweak baryogenesis and the observability of the GWs from the EWPT are somewhat in tension.…”

Section: Introductionmentioning

confidence: 99%

Model discrimination in gravitational wave spectra from dark phase transitions

Croon

Sanz

White

2018

J. High Energ. Phys.

130

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In anticipation of upcoming gravitational wave experiments, we provide a comprehensive overview of the spectra predicted by phase transitions triggered by states from a large variety of dark sector models. Such spectra are functions of the quantum numbers and (self-) couplings of the scalar that triggers the dark phase transition. We classify dark sectors that give rise to a first order phase transition and perform a numerical scan over the thermal parameter space. We then characterize scenarios in which a measurement of a new source of gravitational waves could allow us to discriminate between models with differing particle content.

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“…The electroweak phase transition in particular is of interest since a strongly first order electroweak phase transition can catalyze electroweak baryogenesis [9][10][11][12] providing an explanation for matter anti-matter asymmetry observed today [10,11,[13][14][15][16][17][18]. The phenomenology of such PTs have been studied abundantly [19][20][21][22][23][24][25][26][27][28] and the GW production has recently been advanced theoretically [29] and through lattice simulations [30,31].…”

Section: Introductionmentioning

confidence: 99%

Exotic gravitational wave signatures from simultaneous phase transitions

Croon¹,

White²

2018

J. High Energ. Phys.

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We demonstrate that the relic gravitational wave background from a multi-step phase transition may deviate from the simple sum of the single spectra, for phase transitions with similar nucleation temperatures T N . We demonstrate that the temperature range ∆T between the volume fractions f (T ) = 0.1 and f (T ) = 0.9 occupied by the vacuum bubbles can span ∼ 20 GeV. This allows for a situation in which phase transitions overlap, such that the later bubbles may nucleate both in high temperature and intermediate temperature phases. Such scenarios may lead to more exotic gravitational wave spectra, which cannot be fitted that of a consecutive PTs. We demonstrate this explicitly in the singlet extension of the Standard Model. Finally, we comment on potential additional effects due to the more exotic dynamics of overlapping phase transitions.

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Gravitational waves from the first order electroweak phase transition in the Z₃ symmetric singlet scalar model

Cited by 6 publications

References 22 publications

Review of cosmic phase transitions: their significance and experimental signatures

Review of cosmic phase transitions: their significance and experimental signatures

Model discrimination in gravitational wave spectra from dark phase transitions

Exotic gravitational wave signatures from simultaneous phase transitions

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Gravitational waves from the first order electroweak phase transition in the Z3 symmetric singlet scalar model

Cited by 6 publications

References 22 publications

Review of cosmic phase transitions: their significance and experimental signatures

Review of cosmic phase transitions: their significance and experimental signatures

Model discrimination in gravitational wave spectra from dark phase transitions

Exotic gravitational wave signatures from simultaneous phase transitions

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Product

Resources

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Gravitational waves from the first order electroweak phase transition in the Z₃ symmetric singlet scalar model