Results 81 to 90 of about 278,956 (259)

Naturalness, Chiral Symmetry, and Spontaneous Chiral Symmetry Breaking [PDF]

open access: yes, 1980
A properly called “naturalness” is imposed on gauge theories. It is an order-of-magnitude restriction that must hold at all energy scales μ. To construct models with complete naturalness for elementary particles one needs more types of confining gauge theories besides quantum chromodynamics.
openaire   +3 more sources

ASPECTS OF DYNAMICAL CHIRAL SYMMETRY BREAKING [PDF]

open access: yesQuark Confinement and the Hadron Spectrum V, 2003
11, LaTeX2e, ws-procs9x6; contribution to proceedings of the "5th International Conference on Quark Confinement and the Hadron Spectrum," Gargnano, Italy, 10-14/Sept ...
openaire   +4 more sources

Chiral Random Matrix Theory and Chiral Perturbation Theory [PDF]

open access: yes, 2011
Spontaneous breaking of chiral symmetry in QCD has traditionally been inferred indirectly through low-energy theorems and comparison with experiments. Thanks to the understanding of an unexpected connection between chiral Random Matrix Theory and chiral Perturbation Theory, the spontaneous breaking of chiral symmetry in QCD can now be shown ...
arxiv   +1 more source

Gauge symmetry breaking with fluxes and natural Standard Model structure from exceptional GUTs in F-theory

open access: yesJournal of High Energy Physics, 2022
We give a general description of gauge symmetry breaking using vertical and remainder fluxes in 4D F-theory models. The fluxes can break a geometric gauge group to a smaller group and induce chiral matter, even when the larger group admits no chiral ...
Shing Yan Li, Washington Taylor
doaj   +1 more source

CP breaking in lattice chiral gauge theory [PDF]

open access: yes, 2002
The CP symmetry is not manifestly implemented for the local and doubler-free Ginsparg-Wilson operator in lattice chiral gauge theory. We precisely identify where the effects of this CP breaking appear.
arxiv   +1 more source

Can Chiral Symmetry Explain the Small Pentaquark Width?

open access: yes, 2005
It is shown that the decay amplitude for the Jaffe-Wilczek type pentaquarks is not suppressed by chiral symmetry. On the other hand, pentaquarks of positive or negative parity built up of an antiquark and two chirally different diquarks in an $S$-state ...
Beane   +8 more
core   +2 more sources

Particle-antiparticle duality and fractionalization of topological chiral solitons

open access: yesScientific Reports, 2021
Although a prototypical Su–Schrieffer–Heeger (SSH) soliton exhibits various important topological concepts including particle-antiparticle (PA) symmetry and fractional fermion charges, there have been only few advances in exploring such properties of ...
Chang-geun Oh   +4 more
doaj   +1 more source

Parity Violation in Chiral Symmetry Breaking and Neutrino [PDF]

open access: yesarXiv, 2005
I consider parity violation of the chiral symmetry broken vacuum. It is shown that the parity of the true vacuum in the chiral symmetry breaking model is violated. I propose new mechanism of massive neutrino, which the neutrinos have mass in terms of the chiral symmetry breaking.
arxiv  

Weak magnetism in chiral quark models [PDF]

open access: yes, 2000
We discuss symmetry breaking in the weak magnetism form factors for the semileptonic octet baryon decays. In the chiral quark model, the symmetry breaking can be accounted for in the masses and the quark spin polarizations can take on more general values
Ohlsson, Tommy, Snellman, Hakan
core   +2 more sources

Time-reversal symmetry breaking Abelian chiral spin liquid in Mott phases of three-component fermions on the triangular lattice

open access: yesPhysical Review Research, 2020
We provide numerical evidence in favor of spontaneous chiral symmetry breaking and the concomitant appearance of an Abelian chiral spin liquid for three-component fermions on the triangular lattice described by an SU(3) symmetric Hubbard model with ...
C. Boos   +7 more
doaj   +1 more source

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