Density dependence of nucleon bag constant, radius and mass in an effective field theory model of QCD
نویسندگان
چکیده
منابع مشابه
An effective field theory of QCD at high density
We derive a (Wilsonian) effective field theory of QCD at finite density by integrating out the states in the Dirac sea when the chemical potential μ ≫ ΛQCD. The quark-gluon coupling is effectively (1+1)-dimensional and the theory contains four-quark operators which become relevant as we approach to the Fermi sea. By calculating the one-loop vacuum polarization tensor in the effective theory, we...
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Nuclear processes involving momenta much below the mass of the pion may be described by an effective field theory in which the pions do not appear as explicit degrees of freedom. The effects of the pion and all other virtual hadrons are reproduced by the coefficients of gauge-invariant local operators involving the nucleon field. Nucleon-nucleon scattering phase shift data constrains many of th...
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15 صفحه اولNucleon-Nucleon Scattering from Effective Field Theory
We perform a nonperturbative calculation of the S0 NN scattering amplitude, using an effective field theory (EFT) expansion. We use dimensional regularization throughout, and the MS renormalization scheme; our final result depends only on physical observables. We show that the EFT expansion of the quantity |p| cot δ(p) converges at momenta much greater than the scale Λ that characterizes the de...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2001
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(01)01120-4