929 citations · 7.2k across the 72 of their papers we have counts for
6 papers · 1 filter
Signals of merging supermassive primordial black holes in pulsar timing arrays
Paul Frederik Depta, Kai Schmidt-Hoberg, Pedro Schwaller +1
In this work we evaluate whether the gravitational wave background recently observed by a number of different pulsar timing arrays could be due to merging primordial supermassive b…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
Gravitational Waves from an Axion-Dark Photon System: A Lattice Study
Wolfram Ratzinger, Pedro Schwaller, Ben A. Stefanek
In this work, we present a lattice study of an axion - dark photon system in the early Universe and show that the stochastic gravitational wave (GW) background produced by this sys…
Whispers from the dark side: Confronting light new physics with NANOGrav data
Wolfram Ratzinger, Pedro Schwaller
The NANOGrav collaboration has recently observed first evidence of a gravitational wave background (GWB) in pulsar timing data. Here we explore the possibility that this GWB is due…
Detecting gravitational waves from cosmological phase transitions with LISA: an update
Chiara Caprini, Mikael Chala, Glauber C. Dorsch +11
We investigate the potential for observing gravitational waves from cosmological phase transitions with LISA in light of recent theoretical and experimental developments. Our analy…
Science with the space-based interferometer eLISA. II: Gravitational waves from cosmological phase transitions
Chiara Caprini, Mark Hindmarsh, Stephan Huber +8
We investigate the potential for the eLISA space-based interferometer to detect the stochastic gravitational wave background produced by strong first-order cosmological phase trans…