38 citations · 223 across the 22 of their papers we have counts for
23 papers
Boltzmann equation and its cosmological applications
Seishi Enomoto, Yu-Hang Su, Man-Zhu Zheng +1
We review the derivation of the Boltzmann equation and its cosmological applications in this paper. The derivation of the Boltzmann equation, especially the collision term, is disc…
QCD preheating: New frontier of baryogenesis
Xin-Ru Wang, Jin-Yang Li, Seishi Enomoto +2
We find that QCD can create the cosmological matter abundance via out-of-equilibrium processes during the QCD phase transition, that is what we call the QCD preheating, where the d…
The Exact WKB analysis and the Stokes phenomena of the Unruh effect and Hawking radiation
Seishi Enomoto, Tomohiro Matsuda
The physical observables of quantum theory can be described by perturbation theory, which is often given by diverging power series. This divergence is connected to the existence of…
The Exact WKB analysis for asymmetric scalar preheating
Seishi Enomoto, Tomohiro Matsuda
Using the exact WKB analysis of the higher-order differential equations, we analyze the asymmetry in dynamical particle production of a complex scalar field. The solution requires…
The Exact WKB and the Landau-Zener transition for asymmetry in cosmological particle production
Seishi Enomoto, Tomohiro Matsuda
Cosmological particle production by a time-dependent scalar field is common in cosmology. We focus on the mechanism of asymmetry production when interaction explicitly violates sym…
The exact WKB for cosmological particle production
Seishi Enomoto, Tomohiro Matsuda
The Bogoliubov transformation in cosmological particle production can be explained by the Stokes phenomena of the corresponding ordinary differential equation. The calculation beco…
Leptogenesis due to oscillating Higgs field
Seishi Enomoto, Chengfeng Cai, Zhao-Huan Yu +1
We propose a new leptogenesis scenario in which the lepton asymmetry and matter particles are simultaneously generated due to the coherent oscillating Higgs background. To demonstr…
Duration of Classicality of an inhomogeneous quantum field with repulsive contact self-interactions
Ariel Arza, Sankha S. Chakrabarty, Seishi Enomoto +2
Quantum fields with large degeneracy are often approximated as classical fields. Here, we show how quantum and classical evolution of a highly degenerate quantum field with repulsi…
Baryogenesis with the Berry phase
Seishi Enomoto, Tomohiro Matsuda
The spontaneous baryogenesis scenario explains how a baryon asymmetry can develop while baryon violating interactions are still in thermal equilibrium. However, generation of the c…
Duration of Classicality of Homogeneous Condensates with Attractive Interactions
Sankha Chakrabarty, Seishi Enomoto, Yaqi Han +2
Dark matter axions and other highly degenerate bosonic fluids are commonly described by classical field equations. In a recent paper \cite{BECprop} we calculated the duration of cl…
Gravitational self-interactions of a degenerate quantum scalar field
Sankha S. Chakrabarty, Seishi Enomoto, Yaqi Han +2
We develop a formalism to help calculate in quantum field theory the departures from the description of a system by classical field equations. We apply the formalism to a homogeneo…
Asymmetric Preheating
Seishi Enomoto, Tomohiro Matsuda
We study the generation of the matter-antimatter asymmetry during bosonic preheating, focusing on the sources of the asymmetry. If the asymmetry appears in the multiplication facto…
Quenching preheating by light fields
Olga Czerwińska, Seishi Enomoto, Zygmunt Lalak
In this paper we investigate the role of additional light fields not directly coupled to the background during preheating. We extend our previous study that proved that the product…
Duration of classicality in highly degenerate interacting Bosonic systems
Pierre Sikivie, Elisa M. Todarello
We study sets of oscillators that have high quantum occupancy and that interact by exchanging quanta. It is shown by analytical arguments and numerical simulation that such systems…
Particle production with L-R neutrino oscillation
Seishi Enomoto, Tomohiro Matsuda
When the Higgs field starts oscillation after Higgs inflation, gauge bosons are produced non-perturbatively near the Enhanced Symmetry Point (ESP). Just after the particle producti…
Particle production in the background with VEV depending on time
Olga Czerwinska, Seishi Enomoto, Zygmunt Lalak
It is known that time-dependent vacuum expectation value of the background field may lead to abundant particle production in the early Universe. In supersymmetric theories bosons a…
Influence of interactions on particle production induced by time-varying mass terms
Seishi Enomoto, Olga Fuksińska, Zygmunt Lalak
We have investigated effects of interaction terms on non-perturbative particle production. It is well known that time-varying masses induce abundant particle production. In this pa…
Preheating with higher dimensional interaction
Seishi Enomoto, Nobuhiro Maekawa, Tomohiro Matsuda
Particle production caused by the oscillation after inflation is important since it explains reheating after inflation. On the particle theory side, we know that effective action m…
Beauty is more attractive: Particle Production and Moduli trapping with Higher Dimensional Interaction
Seishi Enomoto, Satoshi Iida, Nobuhiro Maekawa +1
We study quantum effects on moduli dynamics arising from particle production near the enhanced symmetry point (ESP). We focus on non-renormalizable couplings between the moduli fie…
Curvaton mechanism after multi-field inflation
Seishi Enomoto, Tomohiro Matsuda
The evolution of the curvature perturbation after multi-field inflation is studied in the light of the curvaton mechanism. Past numerical studies show that many-field inflation cau…
Modulated decay in the multi-component Universe
Seishi Enomoto, Kazunori Kohri, Tomohiro Matsuda
The early Universe after inflation may have oscillations, kinations (nonoscillatory evolution of a field), topological defects, relativistic and non-relativistic particles at the s…
Non-Gaussianity in the inflating curvaton
Seishi Enomoto, Kazunori Kohri, Tomohiro Matsuda
Inflating curvaton can create curvature perturbation when the curvaton density is slowly varying. Using the delta-N formalism, we discuss the evolution of the curvature perturbatio…
Baryogenesis by B - L generation due to superheavy particle decay
Seishi Enomoto, Nobuhiro Maekawa
We have shown that the generation due to the decay of the thermally produced superheavy fields can explain the Baryon assymmetry in the universe if the superheavy fields are…