Results 21 to 30 of about 15,677 (253)

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   +2 more sources

Chiral Structure of Baryon and Scalar Tetraquark Currents

open access: yesEPJ Web of Conferences, 2014
We investigate chiral properties of local fields of baryons consisting of three quarks with flavor SU(3) symmetry. We construct explicitly independent local threequark fields belonging to definite Lorentz and flavor representations.
Chen Hua-Xing   +2 more
doaj   +1 more source

CHIRAL SYMMETRY ON THE LATTICE [PDF]

open access: yes, 2005
As a non-perturbative and gauge invariant regularization the lattice provides a tool for deeper understanding of the celebrated Yang-Mills theory, QCD and chiral gauge theories. For illustration, I discuss some analytic developments on the lattice related to chiral symmetry, chiral fermions and improvement programs.
openaire   +3 more sources

Symmetries and in-medium effects: Chiral symmetry breaking and modification of meson properties in a strongly interacting medium

open access: yesEPJ Web of Conferences, 2014
Chiral symmetry is a fundamental symmetry of Quantum Chromodynamics (QCD) in the limit of vanishing quark masses. In the hadronic sector chiral symmetry is broken; otherwise chiral partners - hadronic states with the same spin but opposite parity ...
Metag Volker
doaj   +1 more source

Quark masses and chiral symmetry [PDF]

open access: yesPhysical Review D, 1995
compressed postscript file, 20 pages with 10 figures.
openaire   +3 more sources

QCD chiral symmetry restoration with a large number of quarks in a model with a confining propagator and dynamically massive gluons

open access: yesPhysics Letters B, 2015
Considering a QCD chiral symmetry breaking model where the gap equation contains an effective confining propagator and a dressed gluon propagator with a dynamically generated mass, we verify that the chiral symmetry is restored for a large number of ...
R.M. Capdevilla, A. Doff, A.A. Natale
doaj   +1 more source

ASPECTS OF CHIRAL SYMMETRY [PDF]

open access: yes, 2001
We give a pedagogical review of implications of chiral symmetry in QCD. First, we briefly discuss classical textbook subjects such as the axial anomaly, spontaneous breaking of the flavor-nonsinglet chiral symmetry, formation of light pseudo-Goldstone particles, and their effective interactions. Then we proceed to other issues.
openaire   +3 more sources

Chiral Thermodynamics in Tailored Chiral Optical Environments

open access: yesPhysical Review X, 2021
The stochastic motion of Brownian particles out of equilibrium yields rich thermodynamic landscapes studied on a great variety of systems through many different research fields.
Gabriel Schnoering   +3 more
doaj   +1 more source

Chiral symmetry breaking in QCD [PDF]

open access: yesZeitschrift für Physik C Particles and Fields, 1987
By applying bifurcation theory to a truncated Dyson-Schwinger equation for the quark propagator in massless QCD, we show that dynamical symmetry breaking occurs at a certain critical value of the coupling constant. Essential ingredients are (a) an effective dynamical mass for the gluon, and (b) a running coupling constant.
ATKINSON, D, JOHNSON, PW, KOOPMANS, M
openaire   +2 more sources

η' meson under partial restoration of chiral symmetry in nuclear medium*

open access: yesEPJ Web of Conferences, 2012
We shed light upon the η' mass in nuclear matter in the context of partial restoration of chiral symmetry, pointing out that the UA(1) anomaly effects causes the η'-η mass difference necessarily through the chiral symmetry breaking.
Sakai Shuntaro   +3 more
doaj   +1 more source

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