Scalar Field Theory with a Non-Standard Potential
نویسنده
چکیده
We study the phase structure of a 4D complex scalar field theory with a potential V (Φ) = | Λ 3 Φ −ΛΦ | 2 at zero and at finite temperature. The model is analyzed by mean-field and Monte Carlo methods. At zero temperature the theory falls in the universality class of the 4D Ising model when varying Λ. The situation is less clear-cut for variations w.r.t. Λ at large temperatures and variations w.r.t. temperature at a given value of Λ. We observe temperature independence of the mass of the first excitation.
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