Continuous Bogoliubov formalism for gravitational-wave generation in a unified dark sector warm inflation

Key Points

• The aim is to analyze gravitational-wave generation within a dual-scalar-field cosmological model unifying warm inflation with the dark sector.
• Review of a two-field cosmological model involving warm inflation and the dark sector.
• Analysis of the gravitational-wave spectrum based on the theoretical framework.
• Investigation of the independence of the generated spectrum from the initial condition of the 𝜙 field.
• The gravitational-wave spectrum is potentially detectable by future experiments.
• The spectrum remains largely unaffected by the initial conditions of the 𝜙 field.
• The findings extend and complement previous research in the area of gravitational-wave generation.