Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-05-11
Physics
High Energy Physics
High Energy Physics - Theory
21 pages, latex, 4 postscript figures, new sections, some literary changes, notation corrections, accepted for publication in
Scientific paper
10.1103/PhysRevD.60.125013
Using many-body techniques we obtain the time-dependent Gaussian approximation for interacting fermion-scalar field models. This method is applied to an uniform system of relativistic spin-1/2 fermion field coupled, through a Yukawa term, to a scalar field in 3+1 dimensions, the so-called quantum scalar plasma model. The renormalization for the resulting Gaussian mean-field equations, both static and dynamical, are examined and initial conditions discussed. We also investigate solutions for the gap equation and show that the energy density has a single minimum.
Lin Chi-Yong
Natti Paulo Laerte
Takano Natti E. R.
Toledo Piza F. de R. de A.
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