3 papers
hep-th2002
Quantum Effect of Auxiliary Fields to the Gap Equation in the Nambu-Jona-Lasinio Model
Taro Kashiwa, Tomohiko Sakaguchi
This paper has been withdrawn by the authors because the results obtained here had been corrected and appeared in hep-th/0306008.
hep-th1997
Critical Couplings in the Nambu--Jona-Lasinio Model with the Constant Electromagnetic Fields
M. Ishi-i, T. Kashiwa, N. Tanimura
A detailed analysis is performed for the Nambu--Jona-Lasinio model coupled with constant (external) magnetic and/or electric fields in two, three, and four dimensions. The infrared…
hep-th1994
Gauge Invariance in Quantum Electrodynamics
Taro Kashiwa, Yasushi Takahashi
Contrary to the conventional view point of quantization that breaks the gauge symmetry, a gauge invariant formulation of quantum electrodynamics is proposed. Instead of fixing the…