Results 41 to 50 of about 47,894 (240)
Stochastic field theory for a Dirac particle propagating in gauge field disorder [PDF]
, 1999 Recent theoretical and numerical developments show analogies between quantum chromodynamics (QCD) and disordered systems in condensed matter physics. We study the spectral fluctuations of a Dirac particle propagating in a finite four dimensional box in ...
A. Altland +20 more
core +2 more sources
Local spatial densities for composite spin-3/2 systems
Journal of High Energy Physics, 2023 The definition of local spatial densities by using sharply localized one-particle states is applied to spin-3/2 systems. Matrix elements of the electromagnetic current and the energy-momentum tensor are considered and integral expressions of associated ...
H. Alharazin +4 more
doaj +1 more source
Poincar\'e invariance in NRQCD and pNRQCD revisited
, 2018 We investigate how fields transform under the Poincar\'e group in nonrelativistic effective field theories of QCD. In constructing these transformations, we rely only on symmetries and field redefinitions to limit the number of allowed terms.
Berwein, Matthias +3 more
core +1 more source
Lattice Field Theory with the Sign Problem and the Maximum Entropy Method [PDF]
, 2007 Although numerical simulation in lattice field theory is one of the most effective tools to study non-perturbative properties of field theories, it faces serious obstacles coming from the sign problem in some theories such as finite density QCD and ...
Imachi, Masahiro +2 more
core +4 more sources
Vector Manifestation of Chiral Symmetry
, 2003 In this talk I summarize main features of the vector manifestation (VM) which was recently proposed as a novel manifestation of the Wigner realization of chiral symmetry in which the symmetry is restored at the critical point by the massless degenerate ...
Harada, Masayasu
core +1 more source
Anisotropic Color Superconductivity [PDF]
, 2003 We discuss the possibility that in finite density QCD an anisotropic phase is realized. This case might arise for quarks with different chemical potential and/or different masses. In this phase crystalline structures may be formed.
Casalbuoni, Roberto
core +3 more sources
On the three-point order parameters of chiral symmetry breaking
Journal of High Energy Physics, 2023 The nonlocal order parameters of the QCD chiral symmetry breaking, namely the nonanomalous three-point Green functions of the quark bilinears belonging to the odd intrinsic parity sector, are studied within the framework of the Resonance chiral theory ...
Tomáš Kadavý +2 more
doaj +1 more source
Recent Developments in the Nuclear Many-Body Problem [PDF]
, 2001 The study of quantum chromodynamics (QCD) over the past quarter century has had relatively little impact on the traditional approach to the low-energy nuclear many-body problem. Recent developments are changing this situation.
Furnstahl R. J. +6 more
core +3 more sources
Model Independent Results for Heavy Quarkonium
, 2004 We review a number of results for the spectrum and inclusive decays of heavy quarkonium systems which can be derived from QCD under well controlled approximations.
Hoang A. H. +4 more
core +2 more sources
Effective Field Theories for Heavy Quarkonium
, 2005 We briefly review how nonrelativistic effective field theories give us a definition of the QCD potentials and a coherent field theory derived quantum mechanical scheme to calculate the properties of bound states made by two or more heavy quarks.
A Barchielli +29 more
core +2 more sources