Results 31 to 40 of about 1,733,435 (199)

The mass-gap in Quantum Chromodynamics

open access: yesEPJ Web of Conferences, 2016
It is shown that the fundamental Lagrangian of Quantum Chromodynamis should be modified by the adding gluon masses to produce the mass-gap in accordance with the Källen-Lehmann spectral representation. On mass-shell renormalizability and unitarity of the
Larin S.A.
doaj   +1 more source

Quantum chromodynamics quark benzene [PDF]

open access: yes, 2007
A six-quark state with the benzene-like structure is proposed and studied based on color string model. The calculation with the quadratic confinement show that such structure has the lowest energy among the various hidden color six-quark structures ...
Alexandrou   +28 more
core   +2 more sources

Poincaré invariance in low-energy EFTs for QCD

open access: yesEPJ Web of Conferences, 2017
We present the calculations on deriving constraints between the Wilson coefficients in non-relativistic quantum chromodynamics and potential non-relativistic quantum chromodynamics by exploiting the symmetry of its fundamental theory, Poincaré invariance
Hwang Sungmin
doaj   +1 more source

Clothed Particles in Quantum Electrodynamics and Quantum Chromodynamics

open access: yesEPJ Web of Conferences, 2016
The notion of clothing in quantum field theory (QFT), put forward by Greenberg and Schweber and developed by M. Shirokov, is applied in quantum electrodynamics (QED) and quantum chromodynamics (QCD).
Shebeko Alexander
doaj   +1 more source

Quantum Chromodynamics and the Hyperbolic Unitary Group SUh(3)

open access: yesAxioms, 2023
The paper shows that it is possible to construct quantum chromodynamics as a rigorous theory on the basis of employment of hyperbolic unitary group SUh(3), which is a symmetry group for the three-dimensional complex space of the hyperbolic type.
Nikolay Popov, Ivan Matveev
doaj   +1 more source

Machine learning action parameters in lattice quantum chromodynamics [PDF]

open access: yes, 2018
Numerical lattice quantum chromodynamics studies of the strong interaction are important in many aspects of particle and nuclear physics. Such studies require significant computing resources to undertake.
P. Shanahan, D. Trewartha, W. Detmold
semanticscholar   +1 more source

Asymptotic freedom and Confinement imply spontaneously broken chiral symmetry in Quantum Chromodynamics [PDF]

open access: yesMod.Phys.Lett.A12:1649-1654,1997, 1999
We utilize Coleman's theorem and show that quantum chromodynamics based on asymptotic freedom and confinement must have chiral symmetry realized as a spontaneously broken symmetry.
arxiv   +1 more source

Upper Limits on a Possible Gluon Mass [PDF]

open access: yes, 2010
We analyze upper limits on a possible gluon mass, $m_g$. We first discuss various ways to modify quantum chromodynamics to include $m_g \ne 0$, including a bare mass, a Higgs mechanism, and dynamical breaking of color SU(3)$_c$.
Nussinov, Shmuel, Shrock, Robert
core   +3 more sources

Hadron spectroscopy from lattice quantum chromodynamics

open access: yesEPJ Web of Conferences, 2016
Lattice calculations of hadron spectroscopy are discussed. A brief introduction to numerical simulations of QCD, with a focus on spectroscopy is given.
Ryan Sinéad M.
doaj   +1 more source

Proton-Proton Fusion and Tritium β Decay from Lattice Quantum Chromodynamics. [PDF]

open access: yesPhysical Review Letters, 2016
The nuclear matrix element determining the pp→de^{+}ν fusion cross section and the Gamow-Teller matrix element contributing to tritium β decay are calculated with lattice quantum chromodynamics for the first time.
M. Savage   +9 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy