Geodesic
Asymptotic expression for the correlation function of twisted fields in the two-dimensional Dirac model on a lattice
Teoretičeskaâ i matematičeskaâ fizika, Tome 121 (1999) no. 2, pp. 329-346

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A determinant representation is obtained for the correlation function of twisted fields in the two-dimensional Dirac model on a lattice. These fields are determined by twisted boundary conditions for the Dirac fermions. The asymptotic expression is calculated for the correlation function at large distances (the vacuum expectation of the twisted field) at the critical point and in the scaling region. 
@article{TMF_1999_121_2_a9,
     author = {A. I. Bugrij and V. N. Shadura},
     title = {Asymptotic expression for the correlation function of twisted fields in the two-dimensional {Dirac} model on a lattice},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {329--346},
     publisher = {mathdoc},
     volume = {121},
     number = {2},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1999_121_2_a9/}
}
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A. I. Bugrij; V. N. Shadura. Asymptotic expression for the correlation function of twisted fields in the two-dimensional Dirac model on a lattice. Teoretičeskaâ i matematičeskaâ fizika, Tome 121 (1999) no. 2, pp. 329-346. http://geodesic.mathdoc.fr/item/TMF_1999_121_2_a9/