# Spontaneous baryogenesis from asymmetric inflaton

@article{Takahashi2016SpontaneousBF,
title={Spontaneous baryogenesis from asymmetric inflaton},
journal={Physics Letters B},
year={2016},
volume={756},
pages={216-220}
}
• Published 2016
• Physics
• Physics Letters B
We propose a variant scenario of spontaneous baryogenesis from asymmetric inflaton based on current–current interactions between the inflaton and matter fields with a non-zero B−L charge. When the inflaton starts to oscillate around the minimum after inflation, it may lead to excitation of a CP-odd component, which induces an effective chemical potential for the B−L number through the current–current interactions. We study concrete inflation models and show that the spontaneous baryogenesis… Expand
12 Citations
Spontaneous baryogenesis in spiral inflation
• Physics
• The European Physical Journal C
• 2019
We examined the possibility of spontaneous baryogenesis driven by the inflaton in the scenario of spiral inflation, and found the parametric dependence of the late-time baryon number asymmetry. As aExpand
Affleck-Dine baryogenesis just after inflation
We propose a new scenario of Affleck-Dine baryogenesis where a flat direction in the MSSM generates $B\ensuremath{-}L$ asymmetry just after the end of inflation. The resulting amount of baryonExpand
Deformation of Axion Potentials: Implications for Spontaneous Baryogenesis, Dark Matter, and Isocurvature Perturbations
• Physics
• 2019
We show that both the baryon asymmetry of the universe and dark matter (DM) can be accounted for by the dynamics of a single axionlike field. In this scenario, the observed baryon asymmetry isExpand
Leptogenesis via varying Weinberg operator: the Closed-Time-Path approach
• Physics
• 2018
In this work we provide a detailed study of the CP violating phase transition (CPPT) which is a new mechanism proposed to produce a baryon asymmetry. This mechanism exploits the Weinberg operatorExpand
Leptogenesis via neutrino oscillation magic
• Physics
• 2018
A bstractThe possibility of generating the baryon asymmetry of the Universe via flavor oscillation in the early Universe is discussed. After the inflation, leptons are born in some states, travel inExpand
Baryogenesis in $f(R,T)$ Gravity
• Physics
• 2018
We study gravitational baryogenesis in the context of f(R, T) gravity where the gravitational Lagrangian is given by a generic function of the Ricci scalar R and the trace of the stress-energy tensorExpand
Baryogenesis During Reheating via the Ratchet Mechanism
Another interesting and relatively unorthodox approach to generating the baryon asymmetry of the universe is via the inflaton during the reheating epoch. Unlike the dilution problems associated withExpand
Cosmological Implications of Quantum Anomalies
Faculty of Science School of Physics Doctor of Philosophy Cosmological Implications of Quantum Anomalies by Neil D. Barrie The aim of this thesis is to investigate the possible implications ofExpand
Effective chemical potential in spontaneous baryogenesis
• Physics
• 2018
Models of spontaneous baryogenesis have an interaction term $\partial_\mu\theta j^\mu_B$ in the Lagrangian, where $j^\mu_B$ is the baryonic current and $\theta$ can be a pseudo-Nambu-Goldstone boson.Expand
Gravitational waves from domain walls and their implications
• Physics
• 2017
Abstract We evaluate the impact of domain-wall annihilation on the currently ongoing and planned gravitational wave experiments, including a case in which domain walls experience a frictional forceExpand

#### References

SHOWING 1-10 OF 69 REFERENCES
Flat direction inflation with running kinetic term and baryogenesis
• Physics
• 2014
Abstract We consider a possibility that one of the flat directions in the minimal supersymmetric standard model plays the role of the inflaton field and realizes large-field inflation. This isExpand
Spontaneous baryogenesis in flat directions
• Physics
• 2004
We discuss a spontaneous baryogenesis mechanism in flat directions. After identifying the Nambu-Goldstone mode which derivatively couples to the associated $U(1)$ current and rotates due to the AExpand
Spontaneous baryogenesis at the weak phase transition
• Physics
• 1991
Abstract We discuss baryogenesis during the weak phase transition in models with CP violation in the scalar potential. If the transition is first order, classical evolution of the scalar fields canExpand
Isocurvature baryon number fluctuations in an inflationary universe
• Physics
• 1989
Abstract In conventional scenarios of baryogenesis it is extremely difficult, if not impossible, to produce local fluctuations in the baryon-to-photon ratio (so-called isocurvature baryon numberExpand
Anomaly-induced inflaton decay and gravitino-overproduction problem
• Physics
• 2008
Abstract We point out that the inflaton spontaneously decays into any gauge bosons and gauginos via the super-Weyl, Kahler and sigma-model anomalies in supergravity, once the inflaton acquires aExpand
Preheating in Supersymmetric Theories
• Physics
• 2003
We examine the particle production via preheating at the end of inflation in supersymmetric theories. The inflaton and matter scalars are now necessarily complex fields, and their relevantExpand
Spontaneous baryogenesis from extremely light asymmetric dark matter
• Physics
• 2015
We present a mechanism where a particle asymmetry in one sector is used to generate an asymmetry in another sector. The two sectors are not coupled through particle number violating interactions andExpand
Spontaneous thermal Leptogenesis via Majoron oscillation
• Physics
• 2015
A novel model of spontaneous Leptogenesis is investigated, where it takes place in the thermal equilibrium due to a background Nambu-Goldstone field in motion. In particular, we identify theExpand
Baryogenesis in a flat direction with neither baryon nor lepton charge.
• Physics, Medicine
• Physical review letters
• 2004
A new mechanism of spontaneous baryogenesis is presented, where the scalar field instead derivatively couples to a current associated with some global symmetry U(1)(Q) related to baryon current. Expand
Natural chaotic inflation in supergravity
• Physics, Medicine
• Physical review letters
• 2000
It is shown that chaotic inflation naturally takes place by introducing a small breaking term of the shift symmetry in the superpotential. Expand