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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

1981, Volume 101

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Questions of quantum field theory and statistical physics. Part 2


Preface
2
On coexistence of superfluidity and ferromagnetism
V. Alonso, V. N. Popov
3
Some results of the hightemperature expansions for the Ising model in arbitrary magnetic field
N. M. Bogoliubov
11
Influence of the spin-spin interaction and magnetic field on the collective exitations in superfluid $\mathrm{He}^3$
P. N. Brusov
28
Expansion in “square” eigenfunctions of matrix linear system
V. S. Gerdjikov, P. P. Kulish
46
Algebrogeometrical integration of the MNS equation, the finite-gap solutions and their degeneration
A. R. Its, V. B. Matveev
64
Functional integral approuch to the theory of crystals
V. S. Kapitonov, V. N. Popov
77
Quantization of the nonabelian Toda chain
V. E. Korepin
90
Quantum linear problem for the sine-Gordon equation and higher representations
P. P. Kulish, N. Yu. Reshetikhin
101
Barboux transformation and two-dimensional Toda lattice
V. B. Matveev, M. A. Sall'
111
On the theory of Maxwell liquids
A. P. Oskolkov
119
Functional integral method for the BCS-type models
V. N. Popov
128
Infrared asymptotics of the three-point Green function in a scalar model with isospin
M. A. Sokolov
151
Quantum inverse scattering method and algebraic matrix Bethe-Ahsatz
L. A. Takhtadzhyan
158
Phase transition in the model two-level system
S. A. Fedotov
184
Pohlmeyer transformation in Euclidean space
M. G. Tseitlin
196


© Steklov Math. Inst. of RAS, 2025