Physically self-consistent basis for modern cosmology

Cosmoparticle physics appeared as a natural result of internal development of cosmology seeking physical grounds for inflation, baryosynthesis, and no nbaryonic dark matter and of particle physics going outside the Standard Mo del of particle interactions. Its aim is to study the foundations of partic le physics and cosmology and their fundamental relationship in the combinat ion of respective indirect cosmological, astrophysical, and physical effect s. The ideas on new particles and fields predicted by particle theory and o n their cosmological impact are discussed, as well as the methods of cosmop article physics to probe these ideas, are considered with special analysis of physical mechanisms for inflation, baryosynthesis, and nonbaryonic dark matter. These mechanisms are shown to reflect the main principle of modern cosmology, putting, instead of formal parameters of cosmological models, ph ysical processes governing the evolution of the big-bang universe. Their re alization on the basis of particle theory induces additional model-dependen t predictions, accessible to various methods of nonaccelerator particle phy sics. Probes for such predictions, with the use of astrophysical data, are the aim of cosmoarcheology studying astrophysical effects of new physics. T he possibility of finding quantitatively definite relationships between cos mological and laboratory effects on the basis of cosmoparticle approach, as well as of obtaining a unique solution to the problem of physical candidat es for inflation, mechanisms of baryogenesis, and multicomponent dark matte r, is exemplified in terms of gauge model with broken family symmetry, unde rlying horizontal unification and possessing quantitatively definite physic al grounds for inflation, baryosynthesis, and effectively multicomponent da rk-matter scenarios. (C) 2000 MAIK "Nauka/Interperiodica".