Adiabatic and isocurvature fluctuations of Affleck–Dine field in D-term inflation model

Kawasaki, Masahiro; Takahashi, Fuminobu

doi:10.1016/s0370-2693(01)00957-1

Cited by 50 publications

(53 citation statements)

References 15 publications

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“…We note that the dynamics of cosmological perturbations in multi-field system was investigated by a host of authors, see Refs. [19,71,115,127,128,155,162,169,170,176,182,195,196,212,213,214,236,281,306,323,328,329,345,346].…”

Section: A Inflaton and Entropy Perturbations During Inflationmentioning

confidence: 99%

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Inflation dynamics and reheating

Bassett¹,

Tsujikawa²,

Wands³

2006

Rev. Mod. Phys.

1,007

1,329

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We review the theory of inflation with single and multiple fields paying particular attention to the dynamics of adiabatic and entropy/isocurvature perturbations which provide the primary means of testing inflationary models. We review the theory and phenomenology of reheating and preheating after inflation providing a unified discussion of both the gravitational and nongravitational features of multi-field inflation. In addition we cover inflation in theories with extra dimensions and models such as the curvaton scenario and modulated reheating which provide alternative ways of generating large-scale density perturbations. Finally we discuss the interesting observational implications that can result from adiabatic-isocurvature correlations and non-Gaussianity.

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Section: A Inflaton and Entropy Perturbations During Inflationmentioning

confidence: 99%

“…Eq. (182) shows that the entropy perturbation δs works as a source term for the adiabatic perturbation. This is in fact clearly seen if we take the time derivative of the curvature perturbation [140]:…”

Section: B Evolution Of Non-adiabatic Perturbationsmentioning

confidence: 99%

Inflation dynamics and reheating

Bassett¹,

Tsujikawa²,

Wands³

2006

Rev. Mod. Phys.

1,007

1,329

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“…This suppresses the unwanted baryonic isocurvature fluctuations [56][57][58][59][60] which are tightly constrained from current observations [61]. 6 We note that the effect of the term proportional to a h can be omitted after inflation [60].…”

mentioning

confidence: 70%

Affleck-Dine baryogenesis withR-parity violation

et al. 2014

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We investigate whether the baryon asymmetry of the universe is explained in the framework of the supersymmetric extension of the Standard Model with R-parity violating interactions. It is shown that the Affleck-Dine mechanism naturally works via a trilinear interaction LLE c , LQD c , or, if the magnitude of the coupling corresponding to the operator λ, λ ′ , or λ ′′ is sufficiently small. The formation of Q-balls and their subsequent evolution are also discussed. The present baryon asymmetry can be explained in the parameter region where R-parity is mildly violated 10 10−6 and the mass of the gravitino is relatively heavy m 3/2 10 4 GeV. On the other hand, it is difficult to explain the present baryon asymmetry for larger values of Rparity violating couplings λ, λ ′ , λ ′′ 10 −5 , since Q-balls are likely to be destructed in the thermal environment and the primordial baryon number is washed away.

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“…6 Inflation may be driven by a D-term potential of inflaton. In this case, the Hubble-induced mass is absent during inflation but the AD field stays at a nonzero VEV due to the Hubble-friction effect [49][50][51]. The inflaton obtains nonzero F-term after inflation ends, so that the AD field obtains a Hubble-induced mass during the inflaton oscillation dominated era.…”

Section: A Preliminarymentioning

confidence: 96%

Affleck-Dine baryogenesis just after inflation

Yamada

2016

Phys. Rev. D

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We propose a new scenario of Affleck-Dine baryogenesis where a flat direction in the MSSM generates B − L asymmetry just after the end of inflation. The resulting amount of baryon asymmetry is independent of low-energy supersymmetric models but is dependent on inflation models. We consider the hybrid and chaotic inflation models and find that reheating temperature is required to be higher than that in the conventional scenario of Affleck-Dine baryogenesis. In particular, nonthermal gravitino-overproduction problem is naturally avoided in the hybrid inflation model. Our results imply that Affleck-Dine baryogenesis can be realized in a broader range of supersymmetry and inflation models than expected in the literature.

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Adiabatic and isocurvature fluctuations of Affleck–Dine field in D-term inflation model

Cited by 50 publications

References 15 publications

Inflation dynamics and reheating

Inflation dynamics and reheating

Affleck-Dine baryogenesis withR-parity violation

Affleck-Dine baryogenesis just after inflation

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