6 papers
Low-Frequency Gravitational Bremsstrahlung and Memory in a Medium
Diego Blas, Silvia Gasparotto, Hitoshi Murayama +2
Gravitational radiation from the early Universe offers a powerful window into physics beyond the Standard Model (SM). In this paper, we investigate the low-frequency tail of gravit…
Observing Leptogenesis in Action with Gravitational Waves
Hitoshi Murayama, Bea Noether, Jan Schütte-Engel
Leptogenesis is arguably the best motivated theory of baryogenesis given the discovery of finite neutrino masses, yet its experimental test is elusive given its high energy scale.…
The statistics and sensitivity of axion wind detection with the homogeneous precession domain of superfluid helium-3
Joshua W. Foster, Christina Gao, William Halperin +5
The homogeneous precession domain (HPD) of superfluid He has recently been identified as a detection medium which might provide sensitivity to the axion-nucleon coupling $g_{…
Prospects for Direct Detection of Black Hole Formation in Neutron Star Mergers with Next-Generation Gravitational-Wave Detectors
Arnab Dhani, David Radice, Jan Schütte-Engel +5
A direct detection of black hole formation in neutron star mergers would provide invaluable information about matter in neutron star cores and finite temperature effects on the nuc…
Double-graviton production from Standard Model plasma
J. Ghiglieri, M. Laine, J. Schütte-Engel +1
The thermal plasma filling the early universe generated a stochastic gravitational wave background that peaks in the microwave frequency range today. If the graviton production rat…
Freezing-In Gravitational Waves
Jacopo Ghiglieri, Jan Schütte-Engel, Enrico Speranza
The thermal plasma in the early universe produced a stochastic gravitational wave (GW) background, which peaks today in the microwave regime and was dubbed the cosmic gravitational…