[en] These proceedings address many topics in high energy physics, including proton-antiproton and electron-positron interactions; radiation detectors; conservation laws; supersymmetry; supergravity; lattice and quantum field theories, renormalization; and string models

No abstract available

[en] A dynamical scenario for the electroweak gauge symmetry breaking is presented, based on the findings in Monte Carlo calculations that the chiral symmetry breaking for fermions in various colour representations takes place at very different scales. In this framework models can be constructed leading to dynamical fermion mass generation and flavour mixing

[en] Examples of a class of models in which the colour gauge group is enlarged and subsequently broken to SU(3)_C are presented. Models of this class naturally accomodate fermions belonging to the usual SU(3)_C representations as well as new quarks with exotic quantum numbers. Chiral symmetry breaking in the exotic quark sector may occur at much larger mass scales than ordinary chiral symmetry breaking, and could produce dynamical breaking of electroweak gauge symmetry and radiative masses for light fermions. The possibility of quark-lepton unification without proton decay in this class of models is discussed. (author)

[en] The colour gauge group is extended to SU(3) x SU(3) and is subsequently broken to diagonal SU(3)sub(c). Under the diagonal SU(3)sub(c) the fundamental fermionic constituents of the larger strong group become ordinary quarks plus new quarks with exotic quantum numbers. Chiral symmetry breaking in the exotic quark sector may occur at much larger mass scales than ordinary chiral symmetry breaking, and could produce dynamical breaking of electroweak gauge symmetry and radiative masses for the light fermions. (orig.)

[en] Higher dimensional gauge theories lead, after dimensional reduction on coset spaces, to four-dimensional gauge theories usually with the natural emergence of a Higgs sector which is completely determined. However, the Higgs fields never appear in the adjoint representation which in many GUTs could lead to a successful spontaneous symmetry breaking towards the low energy gauge group. As an alternative we suggest that the breaking of the four-dimensional GUTs obtained from CSDR could be provided by the Wilson flux breaking and we discuss some semirealistic examples. We also speculate on the possibility that the breaking of the electroweak sector has dynamical origin. (orig.)

[en] An SU(3) x U(1) model with natural symmetry is considered. The paper shows that CP-violating phases are forbidden in zeroth order and appear only when one-loop corrections to quark mass matrices are included. (author)

No abstract available

[en] A model is presented in which the electroweak gauge group is spontaneously broken according to a dynamical scenario based on the existence of high colour representations. An unattractive feature of this scenario was the necessity to introduce elementary Higgs fields in order to obtain the spontaneous symmetry breaking of part of the theory. In the present model, this breaking can also be understood dynamically with the introduction of hypercolour interactions. (author)

[en] We consider a horizontal SU(3)sub(H) X SU(2)sub(L) X U(1) model in which the Cabibbo mixing and the CP-violation have common origin in the presence of the horizontal interactions. The measure of the CP-violation, which is found to be naturally small, is associated with the horizontal scale. (orig.)