6 papers
Pathways and impediments towards a detection of the relic neutrino wind
Andrew J. Long, Michiru Uwabo-Niibo, Masahide Yamaguchi
A direct detection of the cosmic neutrino background (CNB) in laboratories on Earth has been called the ``holy grail'' of experimental neutrino physics, but a still more glorious p…
Plasma heating during the chiral plasma instability
Balin Armstrong, Andrew J. Long, Károly Seller +1
The presence of a chiral asymmetry in a relativistic plasma opens a tachyonic instability toward the growth of a helical magnetic field. We study the transfer of energy from the ch…
Nonthermal leptogenesis via cosmological gravitational particle production is tested by inflationary gravitational waves
Tammi Chowdhury, Leah Jenks, Edward W. Kolb +2
We explore the coincidence of scales between cosmic inflation and right-handed neutrinos in seesaw models. We show that inflation models, which will be tested by next-generation CM…
Extracting Axion String Network Parameters from Simulated CMB Birefringence Maps using Convolutional Neural Networks
Ray Hagimoto, Andrew J. Long, Mustafa A. Amin
Axion-like particles may form a network of cosmic strings in the Universe today that can rotate the plane of polarization of cosmic microwave background (CMB) photons. Future CMB o…
Cosmological gravitational particle production and its implications for cosmological relics
Edward W. Kolb, Andrew J. Long
Cosmological gravitational particle production (CGPP) is the creation of particles in an expanding universe due solely to their gravitational interaction. These particles can play…
Thermal pressure on ultrarelativistic bubbles from a semiclassical formalism
Andrew J. Long, Jessica Turner
We study a planar bubble wall that is traveling at an ultrarelativistic speed through a thermal plasma. This situation may arise during a first-order electroweak phase transition i…