Geodesic

Tome 68 (1986) no. 1

Sommaire

Nonconservation of the fermion number and the limiting density of fermionic matter (two-dimensional gauge model)
p. 3-17
Dense point spectra of Schr\"odinger and Dirac operators
p. 18-28
Diagrams in the polaron model
p. 29-44
Induced potential and Klauder phenomenon for even confinement potentials with singularity $\lambda x^{-2}$
p. 45-57
A~dynamical system with infinitely many degrees of freedom and solution of the Frenkel'--Kontorova problem
p. 58-68
Evolution operator for the Bogolyubov (BBGKY) hierarchy. Lattice systems
p. 69-87
Correlation functions for anisotropic heisenberg model in zero magnetic field
p. 88-98
Unruh effect and reducibility of the representation of the commutation relations
p. 99-105
Exact solution for the partition function of a~system of interacting fermions
p. 106-116
Kinetic equations for a~dynamical system in a~condensed medium and a~strong external field
p. 117-127
Phase diagram of the ANNNI model at low temperatures I.~Rigorous results
p. 128-140
Coherent dynamics of a~system of coupled Bose and Fermi oscillators
p. 141-150
Vlasov limit of the correlation functions of the grand canonical ensemble
p. 151-154
Excited states in logarithmic perturbation theory
p. 155-159