REVIEW 9 cited by
Leptogenesis in Inflationary Universe
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
We investigate the leptogenesis via decays of heavy Majorana neutrinos which are produced non-thermally in inflaton decays. We make a comprehensive study on the leptogenesis assuming various supersymmetric (SUSY) models for hybrid, new and topological inflations. For an estimation of the lepton asymmetry we adopt the Froggatt-Nielsen mechanism for mass matrices of quarks and leptons. We find that all of these models are successful to produce the lepton asymmetry enough to explain the baryon number in the present universe. Here we impose low reheating temperatures such as $T_R \lesssim 10^8$ GeV in order to suppress the abundance of gravitinos not to conflict with the big-bang nucleosynthesis. Furthermore, we find that the leptogenesis works very well even with $T_R \simeq 10^{6}$ GeV in the SUSY hybrid or new inflation model. It is known that such a reheating temperature is low enough to suppress the abundance of gravitinos of mass $m_{3/2} \simeq 100$ GeV--1 TeV. Thus, the leptogenesis is fully consistent with the big-bang nucleosynthesis in a wide region of the gravitino mass.
Forward citations
Cited by 9 Pith papers
-
Seesaw reheating
Reheating temperature is controlled by the lifetime and relativistic-to-nonrelativistic transition of an intermediate seesaw scalar, not by the inflaton decay width, yielding simple analytical expressions for TRH.
-
Nelson-Barr Inflation
The Nelson-Barr CP-breaking scalar can serve as the inflaton in a hilltop potential, with post-inflationary energy too low to cross the CP-invariant ridge, thereby eliminating the domain-wall problem while providing r...
-
Inflation and Reheating by Dynamical Torsion
The dynamical-torsion inflaton decays via chiral anomalies and Yukawa-assisted three-body channels, yielding a reheating temperature of 10^5–10^7 GeV and testable CMB/GW predictions.
-
Seesaw Cosmology
In seesaw reheating, the post-inflation universe can pass through four alternating matter/radiation eras, with the Standard Model temperature falling as a^{-1/4} and then a^{-3/8}, which changes dark-matter production.
-
Leptogenesis with sub-electroweak-scale reheating temperature
Leptogenesis remains viable for reheating temperatures below sphaleron freeze-out in three perturbative monomial-inflaton scenarios, with blue-tilted primordial GWs as a potential probe.
-
Right-Handed Neutrino Production by an Axion-like Inflaton: Implications for Leptogenesis
A derivative-coupled axion-like inflaton can produce the heavy right-handed neutrinos whose decays explain the observed baryon asymmetry, with the required CP violation lower in the prompt-decay regime.
-
High Frequency Spectrum of Primordial Gravitational Waves
High-frequency primordial gravitational waves extend to higher frequencies due to post-inflation inflaton dynamics, and their detailed spectrum shape can distinguish inflation models.
-
Multi-peaked high-frequency gravitational waves from PBH-assisted leptogenesis
PBH-assisted leptogenesis produces a multi-peaked GW spectrum in the MHz-EHz range from RHN graviton bremsstrahlung plus PBH-related sources.
-
Viability of post-inflationary freeze-in with precision cosmology
CMB measurements of n_s set a lower bound on the reheating temperature in alpha-attractor inflation, which translates into a strong lower bound on the cut-off scale of a dimension-five UV freeze-in dark matter operator.
Discussion (0). Continue with ORCID to comment.