Method of two-time Green's functions in the Ising model with transverse field
Teoretičeskaâ i matematičeskaâ fizika, Tome 38 (1979) no. 3, pp. 388-398
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Two-time Green's functions are used to develop a self-consistent approach to the calculation of the spectrum of collective excitations and the free energy in the Ising model with transverse field. Calculations are also made of all correlation functions with allowance for the singularity of their spectral intensity at zero frequency. The accuracy of the approximation is checked by means of kinematic sum rules. It is shown that the use of these sum rules to
determine the order parameter leads to unphysical results.
@article{TMF_1979_38_3_a10,
author = {V. L. Aksenov and H. Konwent and Yu. Shraiber},
title = {Method of two-time {Green's} functions in the {Ising} model with transverse field},
journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
pages = {388--398},
publisher = {mathdoc},
volume = {38},
number = {3},
year = {1979},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/TMF_1979_38_3_a10/}
}
TY - JOUR AU - V. L. Aksenov AU - H. Konwent AU - Yu. Shraiber TI - Method of two-time Green's functions in the Ising model with transverse field JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1979 SP - 388 EP - 398 VL - 38 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1979_38_3_a10/ LA - ru ID - TMF_1979_38_3_a10 ER -
%0 Journal Article %A V. L. Aksenov %A H. Konwent %A Yu. Shraiber %T Method of two-time Green's functions in the Ising model with transverse field %J Teoretičeskaâ i matematičeskaâ fizika %D 1979 %P 388-398 %V 38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1979_38_3_a10/ %G ru %F TMF_1979_38_3_a10
V. L. Aksenov; H. Konwent; Yu. Shraiber. Method of two-time Green's functions in the Ising model with transverse field. Teoretičeskaâ i matematičeskaâ fizika, Tome 38 (1979) no. 3, pp. 388-398. http://geodesic.mathdoc.fr/item/TMF_1979_38_3_a10/