Cosmological effects of Peccei-Quinn symmetry breaking on QCD axion dark matter [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 We study cosmological effects of explicit Peccei-Quinn breaking on the QCD axion dark matter. We find that the axion abundance decreases or increases significantly depending on the initial position, even for a tiny Peccei-Quinn breaking that satisfies ...
K. Jeong +3 more
semanticscholar +1 more source
Replica Symmetry Breaking in Random Non-Hermitian Systems [PDF]
, 2022 Recent studies have revealed intriguing similarities between the contribution of wormholes to the gravitational path integral and the phenomenon of replica symmetry breaking observed in spin glasses and other disordered systems.
Antonio M. Garc'ia-Garc'ia +3 more
semanticscholar +1 more source
Breaking rotations without violating the KSS viscosity bound
Journal of High Energy Physics, 2023 We revisit the computation of the shear viscosity to entropy ratio in a holographic p-wave superfluid model, focusing on the role of rotational symmetry breaking.
Matteo Baggioli +4 more
doaj +1 more source
Comment on "electromagnetic radiation under explicit symmetry breaking". [PDF]
Physical Review Letters, 2015 Recently published paper [PRL 114, 147701 (2015)] contains several misleading statements and misinterpretations of known facts. The main massage of the paper [PRL 114, 147701 (2015)] is as follows: "We have shown that explicit symmetry breaking in the ...
C. Simovski +3 more
semanticscholar +1 more source
Gravity with Explicit Diffeomorphism Breaking [PDF]
Symmetry, 2021 Modified theories of gravity that explicitly break diffeomorphism invariance have been used for over a decade to explore open issues related to quantum gravity, dark energy, and dark matter.
R. Bluhm, Yumu Yang
semanticscholar +1 more source
Spontaneous chiral symmetry breaking in holographic soft wall models [PDF]
Physical Review D, 2021 We investigate non-linear extensions of the holographic soft wall model proposed by Karch, Katz, Son and Stephanov [1] including non-minimal couplings in the five-dimensional action.
Alfonso Ballon-Bayona +2 more
semanticscholar +1 more source
Symmetry Breaking Soliton, Breather, and Lump Solutions of a Nonlocal Kadomtsev–Petviashvili System
Complexity, 2020 The Kadomtsev–Petviashvili equation is one of the well-studied models of nonlinear waves in dispersive media and in multicomponent plasmas. In this paper, the coupled Alice-Bob system of the Kadomtsev–Petviashvili equation is first constructed via the ...
Hong-Yu Wu +4 more
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Helical symmetry breaking and quantum anomaly in massive Dirac fermions [PDF]
Physical review B, 2021 Helical symmetry of massive Dirac fermions is broken explicitly in the presence of electric and magnetic fields. Here we present two equations for the divergence of helical and axial vector currents following the Jackiw-Johnson approach to the anomaly of
Huan-Wen Wang, Bo Fu, S. Shen
semanticscholar +1 more source
Gravity with explicit spacetime symmetry breaking and the standard model extension [PDF]
Physical Review D, 2019 The Standard-Model Extension (SME) is the general phenomenological framework used to investigate Lorentz violation at the level of effective field theory.
R. Bluhm, H. Bossi, Yuewei Wen
semanticscholar +1 more source
Dark Energy, QCD Axion, and Trans-Planckian-Inflaton Decay Constant
Universe, 2017 Pseudoscalars appear frequently in particle spectra. They can be light if they appear as pseudo-Goldstone bosons from some spontaneously broken global symmetries with the decay constant f.
Jihn E. Kim
doaj +1 more source