Probing the Primordial Universe using Massive Fields

Abstract

Inflation models are numerous. It is extremely difficult, if possible at all, to identify the actual underlying inflation model of our primordial universe. Thus, for the purpose of proving/falsifying inflation and using inflation to probe new physics, model independent approaches are crucial. Massive fields play a uniquely important role in those missions. This short review is based on a talk by one of the authors (YW) in the 2nd LeCosPA Symposium.

7 pages, prepared for the proceeding of the 2nd LeCosPA Symposium "Everything About Gravity"

References in corpus (8)

• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• G-inflation: inflation driven by the Galileon field
• Vector Inflation
• Generation and Characterization of Large Non-Gaussianities in Single Field Inflation
• Blue Tensor Spectrum from Particle Production during Inflation
• Models of the Primordial Standard Clock
• Inflation and Alternatives with Blue Tensor Spectra
• On the initial condition of inflationary fluctuations

Cited by in corpus (7)

• Landscape tomography through primordial non-Gaussianity
• Constraining chameleon field driven warm inflation with Planck 2018 data
• The Massive Flat Space Limit of Cosmological Correlators
• Fingerprints of a Non-Inflationary Universe from Massive Fields
• Non-Gaussian CMB and LSS statistics beyond polyspectra
• Schwinger-Keldysh mechanism in extended quasi single field inflation
• Quantum Creation of a Toy Universe without Inflation