COMPUTATION OF β′(gc) AT O(1/N2) IN THE O(N) GROSS-NEVEU MODEL IN ARBITRARY DIMENSIONS
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Gross – Neveu Model
for i = 1, · · · , N . Note that the sum over i is taken inside the parenthes before taking the square, which is not very clear in the way Peskin–Schroeder writes the Lagrangian density. I’ve put the subscript g0 to indicate that it is the bare coupling. This model describes massless spin 1/2 fermions in one spatial dimension with an attractive short-range potential. What the model does is that...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 1994
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x94000285