O(1/Nf) corrections to the Thirring model in 2<d<4
نویسندگان
چکیده
منابع مشابه
Radiative Corrections for the Causal Thirring Model
We evaluate the one-loop fermion self-energy for the gauged Thirring model in (2 + 1) dimensions, with one massive fermion flavor, in the framework of the causal perturbation theory. In contrast to QED3, the corresponding two-point function turns out to be infrared finite on the mass shell. Then, by means of a Ward identity, we derive the on-shell vertex correction and discuss the role played b...
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متن کاملO(1/Nf) corrections to the Thirring model in 2<d<4.
The Thirring model, that is, a relativistic field theory of fermions with a contact interaction between vector currents, is studied for dimensionalities 2 < d < 4 using the 1/N f expansion, where N f is the number of fermion species. The model is found to have no ultraviolet divergences at leading order provided a regularization respecting current conservation is used. Explicit O(1/N f) correct...
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We evaluate the one-loop fermion self-energy for the gauged Thirring model in (2 + 1) dimensions, with one massive fermion flavor, in the framework of the causal perturbation theory. In contrast to QED3, the corresponding two-point function turns out to be infrared finite on the mass shell. Then, by means of a Ward identity, we derive the on-shell vertex correction and discuss the role played b...
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We propose the gauged Thirring model as a natural gauge-invariant generalization of the Thirring model, four-fermion interaction of current-current type. In the strong gauge-coupling limit, the gauged Thirring model reduces to the recently proposed reformulation of the Thirring model as a gauge theory. Especially, we pay attention to the effect coming from the kinetic term for the gauge boson f...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1995
ISSN: 0556-2821
DOI: 10.1103/physrevd.51.5816