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astro-ph.CO2024
Dual Gravitational Wave Signatures of Instant Preheating
Wei-Yu Hu, Kazunori Nakayama, Volodymyr Takhistov +1
In the instant preheating scenario efficient particle production occurs immediately following the period of inflationary expansion in the early Universe. We demonstrate that instan…
hep-ph2024
Gravitational Wave Probe of Planck-scale Physics After Inflation
Weiyu Hu, Kazunori Nakayama, Volodymyr Takhistov +1
Particle decays are always accompanied by the emission of graviton quanta of gravity through bremsstrahlung processes. However, the corresponding branching ratio is suppressed by t…