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The thesis is about random Constraint Satisfaction Problems (rCSP). These are random instances of classical problems in NP. In the literature the study of rCSP involve identifying-locating phase transition phenomena as well as investigating algorithmic questions.
Recently, some ingenious however mathematically non-rigorous theories from statistical physics have given the study of rCSP a new perspective; the so-called Cavity Method makes some very impressing predictions about the most fundamental properties of rCSP.
In this thesis, we investigate the soundness of some of the most basic predictions of the Cavity Method, mainly, regarding the structure of the so-called Gibbs distribution on various rCSP models. Furthermore, we study some fundamental algorithmic problem related to rCSP. This includes both analysing well-known dynamical process (dynamics) like Glauber Dynamics, Metropolis Process, as well as proposing new algorithmic approaches to some natural problems related to rCSP.