Effective potential for a scalar field in three dimensions: Ising model in the ferromagnetic phase
Effective potential for a scalar field in three dimensions: Ising model in the ferromagnetic phase
We compute the universal effective potential ${\mathrm{V}}_{\mathrm{eff}}$(\ensuremath{\varphi}) for a one-component real scalar field \ensuremath{\varphi} in three Euclidean dimensions (3D) in the case of spontaneously broken symmetry, from the Monte Carlo simulation of the 3D Ising model in an external field at temperatures approaching the phase transition from below. We study …