The phase diagram for the $(\lambda \phi ^{4}+\sigma \phi ^{2})_{2}$ model

E. Prodan

arxiv: hep-th/0204126 · v1 · submitted 2002-04-16 · ✦ hep-th

The phase diagram for the (λ φ ⁴+σ φ ²)₂ model

E. Prodan This is my paper

classification ✦ hep-th

keywords modelparameterlambdaphasesigmabecausebrokendiagram

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The two parameter model is reduced to a one parameter model by using simple transformations. Because the separation between different phase regions for a one parameter model is just a point, the equivalence between the two models leads to the exact equation of the line that separates the broken and un-broken phases in the $(\lambda ,\sigma)$ plane. Also, we obtain nontrivial estimates on the stability region for this model.

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The phase diagram for the (λ φ ⁴+σ φ ²)₂ model

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