منابع مشابه
Meson masses in large Nf QCD from Bethe-Salpeter equation
We solve the homogeneous Bethe-Salpeter (HBS) equation for the scalar, pseudoscalar, vector and axial-vector bound states of quark and anti-quark in large Nf QCD with the improved ladder approximation in the Landau gauge. Quark mass function in the HBS equation is obtained from the Schwinger-Dyson (SD) equation in the same approximation for the consistency with the chiral symmetry. Amazingly, d...
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We study large N behavior of the IIB matrix model using the equivalence between the IIB matrix model for finite N and a field theory on a non-commutative periodic lattice with N×N sites. We find that the large N dependences of correlation functions can be obtained by naively counting the number of fields in the field theory on the noncommutative periodic lattice. Furthermore the large N scaling...
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It is shown that in the framework of analytical confinement, when quark and gluon propagators are induced by an vacuum selfdual gluon field with constant strength, the masses of meson with quantum numbers Q = J P and quark constituents m 1 , m 2 are described with reasonable accuracy by the formula 1 + A Q (m 2 1 + 1.13m 1 m 2 + m 2 2) 0.625 , where a constant positive parameter A Q is unique f...
متن کاملMeson masses in large Nf QCD from the Bethe-Salpeter equation
We solve the homogeneous Bethe-Salpeter (HBS) equation for the scalar, pseudoscalar, vector, and axial-vector bound states of quark and anti-quark in large Nf QCD with the improved ladder approximation in the Landau gauge. The quark mass function in the HBS equation is obtained from the SchwingerDyson (SD) equation in the same approximation for consistency with the chiral symmetry. Amazingly, d...
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The masses of the scalar (σ) and vector (ω) mesons and their widths in nuclear matter are studied in detail using the quark-meson coupling (QMC) model. It is shown that above normal nuclear matter density the effects of σ-ω mixing and the decay of the σ into 2π change the scalar meson mass considerably, while the vector meson mass remains near its mean-field value. We compare the QMC results wi...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2016
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2016.02.001