Geodesic

Tome 15 (1973) no. 1

Sommaire

On the Fourier--Laplace transformation of generalized functions
p. 3-19
Covariant formalism for equal-time commutators
p. 20-42
Convexity properties of Legendre transformations (variational methods in quantum field theory)
p. 43-58
Low-energy theorems and dispersion relations in quantum electrodynamics
p. 59-69
$O$-invariant $U$-cyclic Weyl systems
p. 70-77
Renormalization of the $SU_3\otimes SU_3$-$\sigma$-model for $0^{\pm}$-mesons with linear breaking
p. 78-90
Invariant box method in the quantum theory of a spinor field
p. 91-99
Description unstable particles in the $N-\theta$ and $V-\theta$ sectors of the lee model
p. 100-106
Projection operators for simple lie groups
p. 107-119
Two-magnon states in a one-dimensional Heisenberg model with second-neighbor interaction
p. 120-126
Phenomenological descrption of polar media on the basis of an effective hamiltonian
p. 127-138
On group extensions connected with the Poincar\'e group
p. 139-141
On the symmetry of dynamical equations in quantum field theory
p. 142-145
Minimization of the energy functional on a special class of unitary operators
p. 146-150