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astro-ph.CO2024
Primordial Gravitational Waves of Big Bounce Cosmology in Light of Stochastic Gravitational Wave Background
Changhong Li
Primordial gravitational waves from the very early stages of the universe, such as inflation or bounce processes, are an irreducible cosmological source of the stochastic gravitati…
astro-ph.CO2024
Dual Inflation and Bounce Cosmologies Interpretation of Pulsar Timing Array Data
Changhong Li, Junrong Lai, Jinjie Xiang +1
We explore a dual scenario of generalized inflation and bounce cosmologies, producing a scale-invariant curvature perturbation spectrum. Bayesian analysis with pulsar timing array…