2019/03/03 by Zucheng Li, Li, Zucheng, Yanbin Deng +3
Engineering · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Radiative Heat Transfer Studies
paper · pdf · doi:10.48550/arxiv.1903.00930
openalex publication_date 2019/03/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The solution to large-scale power deficit in the cosmic microwave background fluctuations may be relevant with the physics in the preinflationry period, and significantly depends on whether the initial conditions are set as Bunch-Davies vacuum or thermal ground state. We show the primordial cosmological perturbations based on the preinflationary model with three phases at different thermal initial conditions. The influences of different thermal initial states are studied by the detailed discussions of the adjusting role of model parameters on the power spectrum. Finally, this paper gives the solution to large-scale power deficit in the cosmic microwave background fluctuations.