Two regularization types as two different Nambu-Iona-Lasinio models
نویسندگان
چکیده
منابع مشابه
Regularization in the gauged Nambu-Jona-Lasinio model.
Various prescriptions employed for regulating gauged Nambu–Jona-Lasinio type models such as the top-quark condensate model are discussed. The use of dimensional regularization maintains gauge invariance but destroys the quadratic divergence in the gap equation. If instead a simple ultraviolet momentum cutoff is used to regulate loop integrals, then gauge invariance is destroyed by a quadratical...
متن کاملEffective Potential of Nambu–Jona-Lasinio Model in Differential Regularization
The method of differential regularization is applied to calculate explicitly the one-loop effective potential of a bosonized Nambu–Jona-Lasinio model consisting of scalar and pseudoscalar fields. The regularization scheme independent relation for the σ mass sum rule is obtained. This method can be readily applied to extended NJL models with gauge fields. PACS:11.10.Gh, 11.15.Bt, 12.50.Lr
متن کاملPolyakov–Nambu–Jona-Lasinio Models and QCD Phase Diagram
Strongly interacting matter under extreme conditions is a topic of continuing interest, both from the point of view of ultrarelativistic heavy-ion collisions and lattice QCD. In our work we use approaches based on the timehonored Nambu–Jona-Lasinio model in order to investigate the nature of the different phases of QCD matter at finite temperatures and densities. From hadron spectroscopy it is ...
متن کاملChiral Lagrangians and Nambu-Jona-Lasinio like models
We discuss the low-energy analysis of models involving quarks and four-fermion couplings. The relation with QCD and with other models of mesons and meson plus quarks at low energies is discussed. A short description of how the heat-kernel expansion can be used to get regularization independent information, is given. The anomaly within this class of models and a physical prescription to obtain t...
متن کاملBaryons as Chiral solitons in the Nambu– Jona-Lasinio model
y Supported in part by the Deutsche Forschungsgemeinschaft (DFG) under contract number Re{856/2-2. z Supported by a Habilitanden{scholarship of the Deutsche Forschungsgemeinschaft (DFG). Abstract The description of baryons as chiral solitons of the Nambu{Jona{Lasinio (NJL) model is reviewed. A motivation for the soliton description of baryons is provided from large N C QCD. Rigorous results on ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Russian Physics Journal
سال: 2006
ISSN: 1064-8887,1573-9228
DOI: 10.1007/s11182-006-0114-9