Hybrid Star Construction with the Extended Linear Sigma Model: Preliminary Results

Pion - nucleon scattering and the nucleon sigma term in an extended linear sigma model

A modified linear sigma model that allows for g A = 1.26 by addition of vector and pseudovector πN coupling terms was discussed by Bjorken and Nauenberg and by Lee. In this extended linear sigma model the elastic πN scattering amplitudes satisfy the relevant chiral low-energy theorems, such as the Weinberg-Tomozawa relation for the isovector πN scattering length and in some cases Adler's " cons...

Linear Sigma Model Linkage with Nonperturbative Qcd

Linkage is demonstrated between the quark mass, quark condensate and coupling strength in the infrared limit of QCD and in the quark-level linear sigma model.

Chirally Extended QCD or An Asymptotically Free Chiral Linear Sigma Model With Quarks Coupled to Gluons

We show that the quark (not nucleon) based chiral linear σ model which receives strong support as a mean field theory for the strong interactions can actually be made asymptotically free by coupling to gluons. It has the further bonus of providing confinement.Alternatively, this theory is QCD that is chirally extended by the addition of a (σ, π) chiral multiplet. It could therefore be a candida...

× U ( 3 ) Linear Sigma Model

Statistical Properties of the Linear Sigma Model

The statistical equilibrium properties of the linear sigma model are studied, with a view towards characterizing the field configurations employed as initial conditions for numerical simulations of the formation of disoriented chiral condensates in high-energy nuclear collisions. The field is decomposed into its spatial average, the order parameter, and the fluctuations, the quasi-particles, an...