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Physical Review E 85 (2012) 041121
About the Yukawa model on a lattice in the quenched approximation
F. De Soto, Jean-Christian Anglès D'Auriac1, 2

We study the Yukawa model on a 4-dimensional Euclidean lattice in the quenched approximation. A particular attention is given to the singularities of the Dirac operator in the phase diagram. A careful analysis of a particular limiting case shows that size effects can be huge, questioning the quenched approximation. This is confirmed by a Monte-Carlo simulation in this limit case and without the quenched approximation. We include also some results concerning the symmetries of this model.
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 :  NEEL - Institut Néel
Physique/Physique des Hautes Energies - Réseau
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