101 citations · 586 across the 25 of their papers we have counts for
6 papers · 1 filter
Gravitational Waves from an Inflation Triggered First-Order Phase Transition
Haipeng An, Kun-Feng Lyu, Lian-Tao Wang +1
Large excursion of the inflaton field can trigger interesting dynamics. One important example is a first-order phase transition in a spectator sector which couples to the inflaton.…
A unique gravitational wave signal from phase transition during inflation
Haipeng An, Kun-Feng Lyu, Lian-Tao Wang +1
We study the properties of the gravitational wave (GW) signals produced by first order phase transitions during the inflation era. We show that the power spectrum of the GW oscilla…
Gravitational Production of Superheavy Dark Matter and Associated Cosmological Signatures
Lingfeng Li, Tomohiro Nakama, Chon Man Sou +2
We study the gravitational production of super-Hubble-mass dark matter in the very early universe. We first review the simplest scenario where dark matter is produced mainly during…
Hybrid Quasi-Single Field Inflation
Yi Wang, Yi-Peng Wu, Jun'ichi Yokoyama +1
The decay of massive particles during inflation generates characteristic signals in the squeezed limit of the primordial bispectrum. These signals are in particular distinctive in…
On the Effective Field Theory for Quasi-Single Field Inflation
Xi Tong, Yi Wang, Siyi Zhou
We study the effective field theory (EFT) description of the virtual particle effects in quasi-single field inflation, which unifies the previous results on large mass and large mi…
Differentiating G-inflation from String Gas Cosmology using the Effective Field Theory Approach
Minxi He, Junyu Liu, Shiyun Lu +4
A characteristic signature of String Gas Cosmology is primordial power spectra for scalar and tensor modes which are almost scale-invariant but with a red tilt for scalar modes but…