Lattice effective potential of $(\lambda {\Phi }^4{)}_4$: nature of the phase transition and bounds on the Higgs mass

P. Cea, L. Cosmai, M. Consoli +1

We present a detailed discussion of Spontaneous Symmetry Breaking (SSB) in $(\lambda {\Phi }^4{)}_4$. In the usual approach, inspired by perturbation theory, one predicts a second-order phase tra…