Gravitational waves (GWs) were recently detected for the first time. This revolutionary
discovery opens a new way of learning about particle physics through GWs from first-order …

Abstract The Large Hadron Collider (LHC) has confirmed the Higgs mechanism to generate
mass in the Standard Model (SM), making it attractive also to consider spontaneous …

We investigate the potential for observing gravitational waves from cosmological phase
transitions with LISA in light of recent theoretical and experimental developments. Our …

We undertake a careful analysis of stochastic gravitational wave production from
cosmological phase transitions in an expanding universe, studying both a standard radiation …

We show that the recent detection of a gravitational wave (GW) background reported by
various pulsar timing array (PTA) collaborations including NANOGrav-15 yr, PPTA …

We explore gravitational wave signals arising from first-order phase transitions occurring in
a secluded hidden sector, allowing for the possibility that the hidden sector may have a …

We have performed the first three-dimensional simulations of strong first-order thermal
phase transitions in the early universe. For deflagrations, we find that the rotational …

“Dark quark nuggets,” a lump of dark quark matter, can be produced in the early universe for
a wide range of confining gauge theories and serve as a macroscopic dark matter …

In a vacuum first-order phase transition, gravitational waves are generated from collision of
bubbles of the true vacuum. The spectrum from such collisions takes the form of a broken …

The NANOGrav collaboration has recently observed first evidence of a grav-itational wave
background (GWB) in pulsar timing data. Here we explore the possibility that this GWB is …