Critical behavior of the spin correlation function in the Ashkin-Teller and Baxter models with a line defect

We consider the critical spin-spin correlation function of the Ashkin-Teller and Baxter models. By using path-integral techniques in the continuum description of these models in terms of fermion fields, we show that the correlation decays with distance with the same critical exponent as the Ising mo...

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Autor principal: Naón, Carlos María
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Física
Critical exponent
Critical phenomena
Continuum (measurement)
Critical index
Quantum electrodynamics
Mathematics
Mathematical physics
Ising model
Fermion
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126188
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-126188
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Critical exponent
Critical phenomena
Continuum (measurement)
Critical index
Quantum electrodynamics
Mathematics
Mathematical physics
Ising model
Fermion
spellingShingle Física
Critical exponent
Critical phenomena
Continuum (measurement)
Critical index
Quantum electrodynamics
Mathematics
Mathematical physics
Ising model
Fermion
Naón, Carlos María
Critical behavior of the spin correlation function in the Ashkin-Teller and Baxter models with a line defect
topic_facet Física
Critical exponent
Critical phenomena
Continuum (measurement)
Critical index
Quantum electrodynamics
Mathematics
Mathematical physics
Ising model
Fermion
description We consider the critical spin-spin correlation function of the Ashkin-Teller and Baxter models. By using path-integral techniques in the continuum description of these models in terms of fermion fields, we show that the correlation decays with distance with the same critical exponent as the Ising model. The procedure is straightforwardly extended to take into account the presence of a line defect. Thus we find that in these altered models the critical index of the magnetic correlation on the defect coincides with the one of the defective two-dimensional Ising or Bariev model.
format Articulo
Articulo
author Naón, Carlos María
author_facet Naón, Carlos María
author_sort Naón, Carlos María
title Critical behavior of the spin correlation function in the Ashkin-Teller and Baxter models with a line defect
title_short Critical behavior of the spin correlation function in the Ashkin-Teller and Baxter models with a line defect
title_full Critical behavior of the spin correlation function in the Ashkin-Teller and Baxter models with a line defect
title_fullStr Critical behavior of the spin correlation function in the Ashkin-Teller and Baxter models with a line defect
title_full_unstemmed Critical behavior of the spin correlation function in the Ashkin-Teller and Baxter models with a line defect
title_sort critical behavior of the spin correlation function in the ashkin-teller and baxter models with a line defect
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/126188
work_keys_str_mv AT naoncarlosmaria criticalbehaviorofthespincorrelationfunctionintheashkintellerandbaxtermodelswithalinedefect
bdutipo_str Repositorios
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