Results 11 to 20 of about 488,970 (334)
Cluster Percolation and Explicit Symmetry Breaking in Spin Models [PDF]
Nuclear Physics B - Proceedings Supplements, 2001 Many features of spin models can be interpreted in geometrical terms by means of the properties of well defined clusters of spins. In case of spontaneous symmetry breaking, the phase transition of models like the q-state Potts model, O(n), etc., can be ...
Blanchard +10 more
core +7 more sources
Axion dark matter with explicit Peccei-Quinn symmetry breaking in the axiverse [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 Abstract It was shown that the required high quality of the Peccei-Quinn (PQ) symmetry can be a natural outcome of the multiple QCD axions model. In the axiverse, a hypothetical mass mixing between the QCD axions and axion-like particles (ALPs) can occur, which leads to an interesting phenomenon called the level crossing.
Haijun Li
semanticscholar +5 more sources
Interplay of dynamical and explicit chiral symmetry breaking effects on a quark [PDF]
Phys. Rev. D 99, 094027 (2019), 2018 The relative contributions of explicit and dynamical chiral symmetry breaking in QCD models of the quark-gap equation are studied in dependence of frequently employed ans\"atze for the dressed interaction and quark-gluon vertex. The explicit symmetry breaking contributions are defined by a constituent-quark sigma term whereas the combined effects of ...
Fernando E. Serna +2 more
arxiv +5 more sources
Spontaneous and explicit symmetry breaking of thermoacoustic eigenmodes in imperfect annular geometries [PDF]
Journal of Fluid Mechanics, 2022 This article deals with the symmetry breaking of azimuthal thermoacoustic modes in annular combustors. Using a nominally symmetric annular combustor, we present experimental evidence of a predicted spontaneous reflectional symmetry breaking, and also an unexpected explicit rotational symmetry breaking in the neighbourhood of the Hopf bifurcation which ...
Thomas Indlekofer +3 more
semanticscholar +4 more sources
Strange quark matter in the presence of explicit symmetry breaking interactions [PDF]
Physical Review D, 2015 It is shown that a first order transition associated with a jump in the strange quark mass appears in a generalized 3 flavour Nambu--Jona-Lasinio (NJL) treatment of quark matter. The generalization of the Lagrangian displays the complete set of spin 0 interactions at leading and subleading orders (LO and NLO) in $\frac{1}{N_c}$counting, including the ...
J. Moreira +4 more
semanticscholar +7 more sources
Inhomogeneous phases in the quark-meson model with explicit chiral-symmetry breaking [PDF]
The European Physical Journal Special Topics, 2020 AbstractWe investigate the existence of inhomogeneous chiral phases in the quark-meson model with explicit chiral-symmetry breaking. We find that the inhomogeneous region shrinks with increasing pion masses but survives for the physical value of mπ. The instability towards inhomogeneous matter occurs in the scalar channel, while pseudoscalar modes are ...
Michael Buballa +2 more
semanticscholar +7 more sources
Double field domain walls with explicit symmetry breaking
, 2014 We study the dynamics of domain walls in a double-field model in which the U(1) symmetry is broken both spontaneously and explicitly. The global U(1) symmetry of the system is restored when the symmetry breaking parameter $\epsilon$ is set to zero.
Abbassi, Shahram +2 more
core +4 more sources
Explicit flavor symmetry breaking and holographic compact stars [PDF]
Journal of the Korean Physical Society, 2015 15 pages, 7 ...
Youngman Kim +3 more
semanticscholar +7 more sources
Explicit Chiral Symmetry Breaking as a Premise of the Cross-Sections' Rise [PDF]
arXiv, 2009 We argue that if QCD yields a theory of interacting hadrons then explicit chiral symmetry breaking is a necessary condition for infinitely rising cross-sections. Otherwise cross-sections go to zero at high energies.
V. Petrov
arxiv +5 more sources
Radiation from charged particles due to explicit symmetry breaking in a gravitational field [PDF]
International Journal of Geometric Methods in Modern Physics, 2018 The paradox of a free falling radiating charged particle in a gravitational field is a well-known fascinating conceptual challenge that involves classical electrodynamics and general relativity (GR). We discuss this paradox considering the emission of radiation as a consequence of an explicit space/time symmetry breaking involving the electric field ...
Fabrizio Tamburini +2 more
semanticscholar +9 more sources