Off the critical point by perturbation: The Ising model spin-spin correlator
1989; Elsevier BV; Volume: 314; Issue: 3 Linguagem: Inglês
10.1016/0550-3213(89)90413-6
ISSN1873-1562
Autores Tópico(s)Quantum many-body systems
ResumoA kind of dimensional regularization is proposed in the conformal theory context in order to define the integrals of the perturbation in the τ ∼ (T − Tc)/Tc series for correlation functions off the critical point. The calculation is done for the second-order term of the spin-spin correlation function in the Ising Model and is checked with the known result.
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