Nambu-Jona-Lasinio model with Wilson fermions

Jarno Rantaharju*, Vincent Drach, Claudio Pica, Francesco Sannino

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We present a lattice study of a Nambu-Jona-Lasinio (NJL) model using Wilson fermions. Four-fermion interactions are a natural part of several extensions of the Standard Model, appearing as a low-energy description of a more fundamental theory. In models of dynamical electroweak symmetry breaking they are used to endow the Standard Model fermions with masses. In infrared conformal models these interaction, when sufficiently strong, can alter the dynamics of the fixed point, turning the theory into a (near) conformal model with desirable features for model building. As a first step toward the nonperturbative study of these models, we study the phase space of the ungauged NJL model.

TidsskriftPhysical Review D
Udgave nummer1
StatusUdgivet - 2017

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