Detectable Gravitational Wave Signals from Affleck-Dine Baryogenesis

White, Graham; Pearce, Lauren; Vagie, Daniel; Kusenko, Alexander

doi:10.1103/physrevlett.127.181601

Cited by 31 publications

(17 citation statements)

References 53 publications

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“…This results in their sudden decay and rapid transition from the early matterdominated epochs to radiation-dominated epochs. Consequently, the spectrum of induced gravitational waves from scalar perturbations can be significantly enhanced [1492][1493][1494][1495].…”

Section: Relations To Other Cosmological Problemsmentioning

confidence: 99%

Early-Universe Model Building

Asadi,

Bansal,

Berlin

et al. 2022

Preprint

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Section: Relations To Other Cosmological Problemsmentioning

confidence: 99%

Early-Universe Model Building

Asadi,

Bansal,

Berlin

et al. 2022

Preprint

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“…One promising way to test Affleck Dine baryogenesis is through secondary gravitational wave production via the poltergeist mechanism [223]. The B and L-violating field space directions directions involved in Affleck dine baryogenesis are flat and therefore typically allow for the production of Q-balls, with either B or L playing the role of the conserved global charge.…”

Section: Contributors: Fatemeh Elahi and Graham Whitementioning

confidence: 99%

New Ideas in Baryogenesis: A Snowmass White Paper

Elor¹,

Harz²,

Ipek³

et al. 2022

Preprint

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The Standard Model of Particle Physics cannot explain the observed baryon asymmetry of the Universe. This observation is a clear sign of new physics beyond the Standard Model. There have been many recent theoretical developments to address this question. Critically, many new physics models that generate the baryon asymmetry have a wide range of repercussions for many areas of theoretical and experimental particle physics. This white paper provides an overview of such recent theoretical developments with an emphasis on experimental testability. Model Key Ingredients Observable scale Observables Axiogenesis Axion misalignment, sphalerons axion scale ~ O( 10 8-11 GeV) axion mass ~ 𝜇eV Gravitational waves WR baryogenesis axion inflation, WR interactions with the inflaton LR symmetry breaking ~ O( 10 10 GeV) Gravitational waves QCD Baryogenesis Singlet scalar coupled to the gluon field strength,

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“…However, there are on-going studies of possible ways to detect such gravitational waves, given their importance to early Universe cosmology [44]. In addition, subsequent Q-ball decay can also produce characteristic gravitational waves [45].…”

Section: Gravitational Waves and Primordial Black Holes From Non-topo...mentioning

confidence: 99%

Q-balls in Non-Minimally Coupled Palatini Inflation and their Implications for Cosmology

Lloyd-Stubbs,

McDonald

2021

Preprint

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We demonstrate the existence of Q-balls in non-minimally coupled inflation models with a complex inflaton in the Palatini formulation of gravity. We show that there exist Q-ball solutions which are compatible with inflation and we derive a window in the inflaton mass squared for which this is the case. In particular, we confirm the existence of Q-ball solutions with φ ∼ 10 17 − 10 18 GeV, consistent with the range of field values following the end of slow-roll Palatini inflation. We study the Q-balls and their properties both numerically and in an analytical approximation. The existence of such Q-balls suggests that the complex inflaton condensate can fragment into Q-balls, and that there may be an analogous process for the case of a real inflaton with fragmentation to neutral oscillons. We discuss the possible post-inflationary cosmology following the formation of Q-balls, including an early Q-ball matter domination (eMD) period and the effects of this on the reheating dynamics of the model, gravitational wave signatures which may be detectable in future experiments, and the possibility that Q-balls could lead to the formation of primordial black holes (PBHs). In particular, we show that Palatini Q-balls with field strengths typical of inflaton condensate fragmentation can directly form black holes with masses around 500 kg or more when the self-coupling is λ = 0.1, resulting in very low (less than 100 GeV) reheating temperatures from black hole decay, with smaller black hole masses and larger reheating temperatures possible for smaller values of λ. Q-ball dark matter from non-minimally coupled Palatini inflation may also be a direction for future work.

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Detectable Gravitational Wave Signals from Affleck-Dine Baryogenesis

Cited by 31 publications

References 53 publications

Early-Universe Model Building

Early-Universe Model Building

New Ideas in Baryogenesis: A Snowmass White Paper

Q-balls in Non-Minimally Coupled Palatini Inflation and their Implications for Cosmology

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