On the low-energy limit of string and M-theory
Abstract
We discuss the possible applications of string theory for the construction of generalizations of the SU(3)× SU(2)× U(1) standard model of strong and electroweak interactions. This includes an investigation of effective d=4 dimensional supergravity theories that could be derived from higher dimensional string theories (d=10) and M-theory (d=11).It is shown how the question of unification of gauge and gravitational coupling constants could find a solution within this framework. The mechanism of hidden sector supersymmetry breakdown and its consequences for the pattern for soft supersymmetry breaking terms are discussed in detail.
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