Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1993-10-07
Phys.Lett.B327:101-106,1994
Physics
High Energy Physics
High Energy Physics - Lattice
10 pages, LaTex file. FSU-SCRI-93-127
Scientific paper
10.1016/0370-2693(94)91536-9
In an effort to investigate some of the low energy properties of QCD, in particular those related to chiral symmetry breaking, as well as to obtain insights on the behavior of an interacting theory of fermions on the lattice, the two flavor Nambu--Jona-Lasinio model with $SU(2) \times SU(2)$ chiral symmetry is studied on the four--dimensional hypercubic lattice using large $N$ techniques and numerical simulations. Naive and Wilson fermions are considered and transparent results are obtained regarding the following: the scalar and pseudoscalar spectrum, the approach to the continuum and chiral limits, the size of the $1/N$ corrections, and the effects of the zero momentum fermionic modes on finite lattices. Also, some interesting observations are made by viewing the model as an embedding theory of the Higgs sector. Note: The full ps file of this preprint is also available via anonymous ftp to ftp.scri.fsu.edu. To get the ps file, ftp to this address and use for username "anonymous" and for password your name. The file is in the directory pub/vranas (to go to that directory type: cd pub/vranas) and is called NJL.ps (to get it type: get NJL.ps)
Bitar Khalil M.
Vranas Pavlos M.
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