2 citations · 2 across the 4 of their papers we have counts for
4 papers
Non-Minimally Coupled Chain Inflation at High Scales
Miguel Barroso Varela, Orfeu Bertolami, Katherine Freese +1
Chain inflation offers an alternative to standard slow-roll dynamics, with accelerated expansion proceeding through a sequence of rapid quantum tunneling events between metastable…
Gravitational Wave Echoes of the First Order Phase Transition in a Kination-Induced Big Bang
Richard Casey, Katherine Freese, Evangelos I. Sfakianakis
Gravitational waves (GWs) produced during first-order phase transitions (FOPTs) in the early universe provide a powerful probe of nonstandard cosmological histories. We study GW pr…
Origin of the Stochastic Gravitational Wave Background: First-Order Phase Transition vs. Black Hole Mergers
Martin Wolfgang Winkler, Katherine Freese
The NANOGrav, Parkes and European Pulsar Timing Array (PTA) experiments have collected strong evidence for a stochastic gravitational wave background in the nHz-frequency band. In…
The Gravitational Wave Spectrum of Chain Inflation
Katherine Freese, Aliki Litsa, Martin Wolfgang Winkler
Chain inflation is an alternative to slow-roll inflation in which the inflaton tunnels along a large number of consecutive minima in its potential. In this work we perform the firs…