A New View of Baryon Symmetric Cosmology Based on Grand Unified Theories

Abstract

It has been proposed by Heisenberg (1967) and Fritzsch and Minkowski (1975) that the fundamental Lagrangian of nature should be completely symmetric and that all observed asymmetries are due to asymmetries in the vacuum state. Thus, all asymmetries would arise from spontaneous symmetry breaking of the ultimate grand unified theory. The full symmetry of the theory is expected to hold in the interactions above some critical temperature Tc. Below that critical temperature, multiple vacuum states can be arrived at by the process of spontaneous symmetry breaking. Each “state” corresponds to a unique set of vacuum expectation-values of scalar fields (or their equivalent) which, having been randomly determined through a dynamical instability, themselves determine a new, selfcontained gauge-field theory. Thus, a theory of nature is arrived at randomly from a number of equally probable theories, the original Lagrangian not having uniquely determined the “low-temperature” physics which we observe at our accelerators.