We treat liquid-to-glass transition as a sequence of self-similar “smeared” ideal transitions emerging at characteristic temperatures T0,Tg and Tc. The characteristic temperatures (Vogel–Fulcher T0, calorimetric Tg and crossover Tc temperatures) are discussed through the...

We give a detailed account of the derivation of a master equation for two-coupled cavities in the presence of dissipation. The analytical solution is presented and physical limits of interest are discussed. Firstly, we show that the decay rate of initial coherent states can be significantly...

We derive the classical limit of the nonintegrable Maser model as a unitary approximation to the exact dynamical evolution of quantum subsystems. We next construct a short time expansion of the evolution of quantum correlations and extract analytical information from the physics which dictates...

We show that single and multislit experiments involving matter waves may be constructed to assess dispersively generated correlations between the position and momentum of a single free particle. These correlations give rise to position dependent phases which develop dynamically as a result of...

We derive the tunneling rate for paramagnetic molecules in the context of a collective spin model. By means of path integral methods, an analytical expression is derived. Given the very large spins in question (s∼3000ℏ), the observation of magnetization changes due to pure unitary tunnel...

We introduce an alternative nonperturbative method to the master equation formalism of describing the evolution of coupled linear systems. The method utilizes the spectral distribution of the normal modes of the complete system to calculate the evolution of the dynamical variables. The dynamical...

A formal framework to describe the effective dynamics of subsystems of isolated quantum systems is set up. It provides for a standard decomposition of this effective dynamics in terms of ingredients of two distinct types, namely (a) a mean-field unitary contribution; and (b) a non-unitary...

We propose a reference state for finite-dimensional coherent states, which is easy to deal with in comparison to former suggestions which we briefly review. We also advance explicit calculations which shows that the phase of the overlap of finite coherent state has a structure analogous to the...

Some algebraic properties of Schwinger's quantum kinematical phase space theory are presented. These properties lead to a definition of the maximum number of degrees of freedom of an arbitrary finite dimensional quantum system which is different from the one originally proposed by Schwinger.

In the present paper we consider an exactly soluble generalization of the Maser model which is nonlinearing the field variables. The nonlinear interaction is constructed in such a way as to preserve the well-known scaling property of the model, such that its thermodynamic limit can be defined....