4 papers
Slow-down of expanding bubbles in the early Universe
Nabeen Bhusal, Simone Blasi, Thomas Konstandin +2
We study slow-down effects for bubbles formed in a cosmological first-order phase transition (PT) focusing on deflagrations and hybrids, where the bubble wall is preceded by a shoc…
Prospects and Limitations of PTAs Anisotropy Searches -- The Frequentist Case
Thomas Konstandin, Anna-Malin Lemke, Andrea Mitridate +1
Recent findings from several Pulsar Timing Array (PTA) collaborations point to the existence of a Gravitational Wave Background (GWB) at nanohertz frequencies. A key next step towa…
The impact of cosmic variance on PTAs anisotropy searches
Thomas Konstandin, Anna-Malin Lemke, Andrea Mitridate +1
Several Pulsar Timing Array (PTA) collaborations have recently found evidence for a Gravitational Wave Background (GWB) by measuring the perturbations that this background induces…
Non-singular solutions to the Boltzmann equation with a fluid Ansatz
Gláuber C. Dorsch, Thomas Konstandin, Enrico Perboni +1
Cosmological phase transitions can give rise to intriguing phenomena, such as baryogenesis or a stochastic gravitational wave background, due to nucleation and percolation of vacuu…