Results 41 to 50 of about 182,622 (338)

Chiral symmetry breaking by a non-Abelian external field in (2+1)-dimensions [PDF]

open access: yes, 1997
We investigate the effect of a constant external non-Abelian field on chiral symmetry breaking in a (2+1)-dimensional Nambu-Jona-Lasinio model and in 3D QCD by solving the gap equation and the Bethe-Salpeter equation, and also by RG analysis. In the (2+1)
C. D. Roberts   +35 more
core   +3 more sources

CHIRAL SYMMETRY AND PENTAQUARKS [PDF]

open access: yesPentaquark 04, 2005
Spontaneous chiral symmetry breaking, mesons and baryons are illustrated in the language of the Dirac theory. Various forces acting between quarks inside baryons are discussed. I explain why the naive quark models typically overestimate pentaquark masses by some 500 MeV and why in the fully relativistic approach to baryons pentaquarks turn out to be ...
openaire   +2 more sources

Topological boundary modes in nonlinear dynamics with chiral symmetry

open access: yesNew Journal of Physics
Particle-hole symmetry and chiral symmetry play a pivotal role in multiple areas of physics, yet they remain unstudied in systems with nonlinear interactions whose nonlinear normal modes do not exhibit $\textbf{U}(1)$ -gauge symmetry.
Di Zhou
doaj   +1 more source

Assembly of planar chiral superlattices from achiral building blocks

open access: yesNature Communications, 2022
The formation of nanostructures with chiral symmetry often requires chiral directing agents at a smaller length scale. Here, the authors report the self-assembly of 2D chiral superlattices from achiral tetrahedron-shaped building blocks.
Zhihua Cheng, Matthew R. Jones
doaj   +1 more source

An Introduction to Chiral Symmetry on the Lattice

open access: yes, 2004
The $SU(N_f)_L \otimes SU(N_f)_R$ chiral symmetry of QCD is of central importance for the nonperturbative low-energy dynamics of light quarks and gluons.
Chandrasekharan, S., Wiese, U. -J.
core   +2 more sources

Chiral symmetry breaking in the truncated Coulomb Gauge II. Non-confining power law potentials [PDF]

open access: yes, 2008
In this paper we study the breaking of chiral symmetry with non-confining power-like potentials. The region of allowed exponents is identified and, after the previous study of confining (positive exponent) potentials, we now specialize in shorter range ...
D. Klabucar, O. Kaczmarek, P. Bicudo
core   +1 more source

Baryons and chiral symmetry [PDF]

open access: yesInternational Journal of Modern Physics E, 2017
The relevance of chiral symmetry in baryons is highlighted in three examples in the nucleon spectroscopy and structure. The first one is the importance of chiral dynamics in understanding the Roper resonance. The second one is the role of chiral symmetry in the lattice calculation of [Formula: see text] term and strangeness.
openaire   +2 more sources

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Emergent chiral symmetry in a three-dimensional interacting Dirac liquid

open access: yesJournal of High Energy Physics, 2021
We compute the effects of strong Hubbardlike local electronic interactions on three-dimensional four-component massless Dirac fermions, which in a noninteracting system possess a microscopic global U(1) ⊗ SU(2) chiral symmetry.
András L. Szabó, Bitan Roy
doaj   +1 more source

The computational challenge of lattice chiral symmetry - Is it worth the expense? [PDF]

open access: yesEPJ Web of Conferences, 2020
The origin of the low-lying position of the Roper resonance in the nucleon energy spectrum has been the subject of significant interest for many years, including several investigations using lattice QCD.
Virgili Adam   +2 more
doaj   +1 more source

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