Mean field at finite temperature and symmetry breaking
نویسندگان
چکیده
منابع مشابه
Mean field at finite temperature and symmetry breaking
For an infinite system of nucleons interacting through a central spin-isospin schematic force we discuss how the Hartree-Fock theory at finite temperature T yields back, in the T = 0 limit, the standard zero-temperature Feynman theory when there is no symmetry breaking. The attention is focused on the mechanism of cancellation of the higher order Hartree-Fock diagrams and on the dependence of t...
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The breaking of the taste symmetry is studied in the temperature range between 140 MeV to 550 MeV. In order to investigate this violation we have calculated the screening masses of the various taste states fitting the exponential decay of the spatial correlators. The computation has been performed using dynamical Nf = 2+1 gauge field configurations generated with the p4 staggered action along t...
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The catalysis of chiral symmetry breaking in the massless weakly coupled QED in a magnetic field at finite temperature is studied. The temperature of the symmetry restoration is estimated analytically as Tc ≈ mdyn, where mdyn is the dynamical mass of a fermion at zero temperature. PACS number(s): 11.30Rd, 11.30Qc, 12.20Ds Typeset using REVTEX 1 Recently it has been shown that a constant magneti...
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We start with the discussion of the recent ab initio variational calculations of light nuclei up to the mass number A ≤ 10 of the Argonne-Illinois group [1]. They take the two nucleon interaction obtained from the scattering data and add the three body interaction so as to reproduce the binding energies of the three nucleon systems. They reproduce very nicely the light nuclei including the exci...
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The catalysis of chiral symmetry breaking by a magnetic field in the massless weakcoupling phase of QED is studied. The dynamical mass of a fermion (energy gap in the fermion spectrum) is shown to depend essentially nonanalytically on the renormalized coupling constant α in a strong magnetic field. The temperature of the symmetry restoration is calculated analytically as Tc ≈ mdyn, where mdyn i...
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ژورنال
عنوان ژورنال: Annals of Physics
سال: 2004
ISSN: 0003-4916
DOI: 10.1016/j.aop.2003.12.005