2016/06/30 by M. Mohsenzadeh, E. Yusofi
Physics and Astronomy · #Amplitude #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #De Sitter universe #Harmonic #Inflation (cosmology) #Mode (computer interface) #Noncommutative and Quantum Gravity Theories #Order (exchange) #Spectral density #Spectral line #Spectrum (functional analysis) #gr-qc #hep-th
paper · pdf · doi:10.1088/1674-1137/41/8/085101
published as Chin.Phys. C41 (2017) no.8 · 7 pages, 3 figures, Accepted for publication in Chinese Physics C
arxiv created 2017/06/03 · openalex created_date 2017/06/15 · openalex publication_date 2017/08/01 · arxiv updated 2018/04/06 · openalex updated_date 2026/08/05
Since trans-Planckian considerations can be associated with the re-definition of the initial vacuum, we investigate further the influence of trans-Planckian physics on the spectra produced by the initial quasi-de Sitter (dS) state during inflation. We use the asymptotic-dS mode to study the trans-Planckian correction of the power spectrum to the quasi-dS inflation. The obtained spectra consist of higher order corrections associated with the type of geometry and harmonic terms sensitive to the fluctuations of space-time (or gravitational waves) during inflation. As an important result, the amplitude of the power spectrum is dependent on the choice of c , i.e. the type of space-time in the period of inflation. Also, the results are always valid for any asymptotic dS space-time and particularly coincide with the conventional results for dS and flat space-time.