Cosmology with the laser interferometer space antenna
Abstract The Laser Interferometer Space Antenna (LISA) has two scientific objectives of
cosmological focus: to probe the expansion rate of the universe, and to understand …
cosmological focus: to probe the expansion rate of the universe, and to understand …
[HTML][HTML] Chiral effects in astrophysics and cosmology
K Kamada, N Yamamoto, DL Yang - Progress in Particle and Nuclear …, 2023 - Elsevier
The microscopic quantum nature of elementary particles, chirality, leads to macroscopic
phenomena like the chiral anomaly, chiral magnetic effect, and chiral plasma instability. We …
phenomena like the chiral anomaly, chiral magnetic effect, and chiral plasma instability. We …
Primordial gravitational waves in the nano-Hertz regime and PTA data—towards solving the GW inverse problem
E Madge, E Morgante, C Puchades-Ibáñez… - Journal of High Energy …, 2023 - Springer
A bstract In recent years, several pulsar timing array collaborations have reported first hints
for a stochastic gravitational wave background at nano-Hertz frequencies. Here we …
for a stochastic gravitational wave background at nano-Hertz frequencies. Here we …
A novel probe of supersymmetry in light of nanohertz gravitational waves
A bstract A new era of exploring the early Universe may have begun with the recent strong
evidence for the stochastic gravitational wave (GW) background from the data reported by …
evidence for the stochastic gravitational wave (GW) background from the data reported by …
Gauge-field production during axion inflation in the gradient expansion formalism
We study the explosive production of gauge fields during axion inflation in a novel gradient
expansion formalism that describes the time evolution of a set of bilinear electromagnetic …
expansion formalism that describes the time evolution of a set of bilinear electromagnetic …
Perturbatively including inhomogeneities in axion inflation
Axion inflation, ie an axion-like inflaton coupled to an Abelian gauge field through a Chern-
Simons interaction, comes with a rich and testable phenomenology. This is particularly true …
Simons interaction, comes with a rich and testable phenomenology. This is particularly true …
Axion fragmentation
A bstract We investigate the production of axion quanta during the early universe evolution
of an axion-like field rolling down a wiggly potential. We compute the growth of quantum …
of an axion-like field rolling down a wiggly potential. We compute the growth of quantum …
Resonant backreaction in axion inflation
V Domcke, V Guidetti, Y Welling… - Journal of Cosmology …, 2020 - iopscience.iop.org
Axion inflation entails a coupling of the inflaton field to gauge fields through the Chern-
Simons term. This results in a strong gauge field production during inflation, which …
Simons term. This results in a strong gauge field production during inflation, which …
Implications of gravitational-wave production from dark photon resonance to pulsar-timing observations and effective number of relativistic species
R Namba, M Suzuki - Physical Review D, 2020 - APS
The coherent oscillation of axionic fields naturally drives copious production of dark photon
particles in the early Universe, due to resonance and tachyonic enhancement. During the …
particles in the early Universe, due to resonance and tachyonic enhancement. During the …
Present and future of osmo attice
We discuss the present state and planned updates of CosmoLattice, a cutting-edge code for
lattice simulations of non-linear dynamics of scalar-gauge field theories in an expanding …
lattice simulations of non-linear dynamics of scalar-gauge field theories in an expanding …