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Nucleon structure functions are studied within the chiral soliton approach to the bosonized Nambu-Jona-Lasinio model. The valence quark approximation is employed which is justified for moderate constituent quark masses ($\sim$ 400 MeV) as…

高能物理 - 唯象学 · 物理学 2016-09-01 H. Weigel , L. Gamberg , H. Reinhardt

The self-energy of quarks is investigated for various models which are inspired by the Nambu--Jona-Lasinio (NJL) model. Including, beyond the Hartree-Fock approximation, terms up to second-order in the quark interaction, the real and…

核理论 · 物理学 2009-10-22 P. P. Domitrovich , H. Müther

We construct an effective chiral theory for the nucleon, based on the low-energy effective QCD partition function from the QCD instanton vacuum. We fully consider the momentum-dependent dynamical quark mass whose value at the zero…

高能物理 - 唯象学 · 物理学 2025-01-22 Yongwoo Choi , Hyun-CHul Kim

Understanding hadronic interactions is crucial for investigating the properties of unstable hadrons, since measuring physical quantities for unstable hadrons including the resonance mass and decay width requires simultaneous calculations of…

高能物理 - 格点 · 物理学 2015-03-31 Takeshi Yamazaki

Effective field theory techniques are used to describe the interaction of heavy hadrons in a model independent way. Predictability is obtained by exploiting the symmetries of QCD. Heavy hadron chiral perturbation theory is reviewed and used…

高能物理 - 唯象学 · 物理学 2007-05-23 Iain W. Stewart

Quark light cone momentum distributions in nuclear matter and the structure function of a bound nucleon are investigated in the framework of the Nambu-Jona-Lasinio model. This framework describes the nucleon as a relativistic quark-diquark…

核理论 · 物理学 2010-02-17 H. Mineo , W. Bentz , N. Ishii , A. W. Thomas , K. Yazaki

Relativistic and non-relativistic modern nucleon-nucleon potentials are mapped on a relativistic operator basis using projection techniques. This allows to compare the various potentials at the level of covariant amplitudes were a…

核理论 · 物理学 2016-08-16 O. Plohl , C. Fuchs , E. N. E. van Dalen

We present a relativistic chiral effective theory for symmetric and asymmetric nuclear matter taken in the Hartree-Fock scheme. The nuclear binding is insured by a background chiral invariant scalar field associated with the radial…

核理论 · 物理学 2008-12-18 E. Massot , G. Chanfray

I will review recent progress in our understanding of the nuclear force. In the course of the 1990's, so-called high-precision, charge-dependent nucleon-nucleon potentials have been constructed which are, essentially, phenomenological…

核理论 · 物理学 2009-11-06 R. Machleidt

We study the description of nucleons and diquarks in the presence of a uniform strong magnetic field within the framework of the two-flavor Nambu-Jona--Lasinio (NJL) model. Diquarks are constructed through the resummation of quark loop…

高能物理 - 唯象学 · 物理学 2020-11-25 M. Coppola , D. Gomez Dumm , N. N. Scoccola

The electromagnetic form factors are the most fundamental quantities to describe the internal structure of the nucleon and the shape of a spatially extended particle is determined by its intrinsic quadrupole moment which can be related to…

高能物理 - 唯象学 · 物理学 2015-05-18 Harleen Dahiya , Neetika Sharma

We compare nuclear and neutron matter predictions based on two different ab initio approaches to nuclear forces and the nuclear many-body problem. The first consists of a realistic meson-theoretic nucleon-nucleon potential together with the…

核理论 · 物理学 2013-05-30 F. Sammarruca , B. Chen , L. Coraggio , N. Itaco , R. Machleidt

Functional renormalization group (FRG) methods applied to calculations of isospin-symmetric and asymmetric nuclear matter as well as neutron matter are reviewed. The approach is based on a chiral Lagrangian expressed in terms of nucleon and…

核理论 · 物理学 2017-03-08 Matthias Drews , Wolfram Weise

The effective quark models are employed to describe the hadronization of QCD in the quark sector. They reveal a different structure depending on how the spontaneous chiral symmetry breaking (CSB) is implemented. When the generation of light…

高能物理 - 唯象学 · 物理学 2007-05-23 A. A. Andrianov , V. A. Andrianov , D. Espriu , R. Tarrach

A relativistic light front formulation of nuclear dynamics is applied to infinite nuclear matter. A hadronic meson-baryon Lagrangian, consistent with chiral symmetry, leads to a nuclear eigenvalue problem which is solved, including…

核理论 · 物理学 2009-10-31 G. A. Miller , R. Machleidt

The meson-exchange current in nuclei, a long-standing problem in nuclear physics, is described in modern theory of strong interactions, namely, QCD expressed in terms of effective chiral Lagrangian field theory. Some old results are given a…

核理论 · 物理学 2007-05-23 Mannque Rho

We report on the recent developments of a new effective field theory for nuclear matter [1,2,3]. We present first the nuclear matter chiral power counting that takes into account both short-- and long--range inter-nucleon interactions. It…

核理论 · 物理学 2011-01-04 A. Lacour , U. -G. Meissner , J. A. Oller

Low-energy nuclear structure and reactions can be described in a systematically improvable way using the framework of chiral effective field theory. This requires solving the quantum mechanical many-body problem with regularized nuclear…

核理论 · 物理学 2023-12-22 Hermann Krebs , Evgeny Epelbaum

We extend the QCD Parton Model analysis using a factorized nuclear structure model incorporating individual nucleons and pairs of correlated nucleons. Our analysis of high-energy data from lepton Deep-Inelastic Scattering, Drell-Yan and W/Z…

We extend the quark-meson coupling (QMC) model to incorporate chiral symmetry. The relationship between the QMC model and chiral perturbation theory is also discussed. The nuclear central potential is modified by the effect of internal…

核理论 · 物理学 2015-05-18 Koichi Saito