The landscape of QCD axion models
We review the landscape of QCD axion models. Theoretical constructions that extend the
window for the axion mass and couplings beyond conventional regions are highlighted and …
window for the axion mass and couplings beyond conventional regions are highlighted and …
[HTML][HTML] String cosmology: from the early universe to today
M Cicoli, JP Conlon, A Maharana, S Parameswaran… - Physics Reports, 2024 - Elsevier
We review applications of string theory to cosmology, from primordial times to the present-
day accelerated expansion. Starting with a brief overview of cosmology and string …
day accelerated expansion. Starting with a brief overview of cosmology and string …
[HTML][HTML] Feebly-interacting particles: FIPs 2020 workshop report
With the establishment and maturation of the experimental programs searching for new
physics with sizeable couplings at the LHC, there is an increasing interest in the broader …
physics with sizeable couplings at the LHC, there is an increasing interest in the broader …
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 …
Recent progress in the physics of axions and axion-like particles
The axion is a light pseudoscalar particle postulated to solve issues with the Standard
Model, including the strong CP problem and the origin of dark matter. In recent years, there …
Model, including the strong CP problem and the origin of dark matter. In recent years, there …
Relic abundance of dark photon dark matter
We present a new mechanism for producing the correct relic abundance of dark photon dark
matter over a wide range of its mass, extending down to 10− 20 eV. The dark matter …
matter over a wide range of its mass, extending down to 10− 20 eV. The dark matter …
Large field excursions and approximate discrete symmetries from a clockwork axion
We present a renormalizable theory of scalars in which the low-energy effective theory
contains a pseudo-Goldstone boson with a compact field space of 2 π F and an approximate …
contains a pseudo-Goldstone boson with a compact field space of 2 π F and an approximate …
The weak gravity conjecture: a review
The Weak Gravity Conjecture holds that in a theory of quantum gravity, any gauge force
must mediate interactions stronger than gravity for some particles. This statement has …
must mediate interactions stronger than gravity for some particles. This statement has …
Realizing the relaxion from multiple axions and its UV completion with high scale supersymmetry
K Choi, SH Im - Journal of High Energy Physics, 2016 - Springer
A bstract We discuss a scheme to implement the relaxion solution to the hierarchy problem
with multiple axions, and present a UV-completed model realizing the scheme. All of the N …
with multiple axions, and present a UV-completed model realizing the scheme. All of the N …
A clockwork theory
GF Giudice, M McCullough - Journal of High Energy Physics, 2017 - Springer
A bstract The clockwork is a mechanism for generating light particles with exponentially
suppressed interactions in theories which contain no small parameters at the fundamental …
suppressed interactions in theories which contain no small parameters at the fundamental …