Towards the bounce inflationary gravitational wave

In the bounce inflation scenario, the inflation is singularity-free, while the advantages of inflation are preserved. We analytically calculate the power spectrum of its primordial gravitational waves (GWs), and show a universal result including the physics of the bounce phase. The spectrum acquires...

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Bibliographic Details
Published inThe European physical journal. C, Particles and fields Vol. 76; no. 12; pp. 1 - 9
Main Authors Li, Hai-Guang, Cai, Yong, Piao, Yun-Song
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 20.12.2016
Springer
Springer Nature B.V
Subjects
Astronomy
Astrophysics and Cosmology
Elementary Particles
Gravitation
Gravitational waves
Hadrons
Heavy Ions
Inflation (Economics)
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
Power Asymmetry
Perturbation Equation
Null Energy Condition
Gravitational Wave
Power Deficit
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Summary:In the bounce inflation scenario, the inflation is singularity-free, while the advantages of inflation are preserved. We analytically calculate the power spectrum of its primordial gravitational waves (GWs), and show a universal result including the physics of the bounce phase. The spectrum acquires a cutoff at large scale, while the oscillation around the cutoff scale is quite drastic, which is determined by the details of bounce. Our work highlights that the primordial GWs at large scale may encode the physics of the bounce ever happened at about ∼ 60 efolds before inflation.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-016-4554-2