Results 21 to 30 of about 292,949 (385)
Flavor probes of axion-like particles [PDF]
Journal of High Energy Physics, 2021 Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-energy extensions of the Standard Model (SM). We investigate the phenomenology of an ALP with flavor-changing couplings, and present a comprehensive analysis of quark and
M. Bauer +4 more
semanticscholar +1 more source
Journal of High Energy Physics, 2020 Abstract 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 fluctuations and their back-reaction on the homogeneous zero-mode.
Fonseca De Sa, Nayara +3 more
openaire +6 more sources
Nuclear Physics B - Proceedings Supplements, 1992 The strong CP problem and its resolution through the existence of an axion are briefly reviewed. The constraints on the axion from accelerator searches, from the evolution of red giants and from supernova SN1987a combine to require $m_a < 3 \cdot 10^{-3}$ eV, where $m_a$ is the axion mass.
Department of Physics, University of Florida, Gainesville, FL 32611, USA ( host institution ) +1 more
openaire +3 more sources
Physical Review Letters, 2018 We propose a class of axion models with generation dependent Peccei-Quinn charges for the known fermions that allow to suppress the axion couplings to nucleons and electrons. Astrophysical limits are thus relaxed, allowing for axion masses up to ${\cal O}(0.1)$ eV.
Di Luzio L. +4 more
openaire +6 more sources
Robust axion insulator and Chern insulator phases in a two-dimensional antiferromagnetic topological insulator [PDF]
Nature Materials, 2019 The intricate interplay between non-trivial topology and magnetism in two-dimensional materials can lead to the emergence of interesting phenomena such as the quantum anomalous Hall effect.
Chang Liu +9 more
semanticscholar +1 more source
Axion electrodynamics in topological materials [PDF]
Journal of Applied Physics, 2020 One of the intriguing properties characteristic to three-dimensional topological materials is the topological magnetoelectric phenomena arising from a topological term called the $\theta$ term.
A. Sekine, K. Nomura
semanticscholar +1 more source
Invisible axion search methods [PDF]
, 2020 Originally hypothesized to explain the absence of $C\phantom{\rule{0}{0ex}}P$ violation in the strong interactions, the axion has emerged as a candidate constituent of dark matter.
P. Sikivie
semanticscholar +1 more source
Upper Limit on the QCD Axion Mass from Isolated Neutron Star Cooling. [PDF]
Physical Review Letters, 2021 The quantum chromodynamics (QCD) axion may modify the cooling rates of neutron stars (NSs). The axions are produced within the NS cores from nucleon bremsstrahlung and, when the nucleons are in superfluid states, Cooper pair breaking and formation ...
M. Buschmann +4 more
semanticscholar +1 more source
Proceedings of Corfu Summer Institute 2019 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2019), 2020 This proceeding is based on [1] where we study a model in which the SM is coupled to a Hidden sector via heavy messengers. In this framework, instanton densities of the Hidden sector behave in the IR like axions coupled to the SM. We study the general properties of such emergent axions and we show that they are different from both fundamental and ...
Anastasopoulos P. +4 more
openaire +3 more sources