We study the quantum evolution of a coherent state originally located in phase space on the unstable fixed point of a multiple well potential in one dimension. We show that for sufficiently long times the coherent state “splits” into two distinct components, each of which localizes semi-classically on a neighbouring unstable fixed point. We show moreover that during the transition the coherent ...

this research intents to /explain the theory and practice of fascism in . italy an germany, and so it tries to recognise the ideology of classical fascism. studing the historical grounds of emerging of fascism, it explains the raising ideology of fascism in nature, resouce and contents of thought, and by looking to foundations of classical fascism's ideology, it studies natural history of ...

This essay examines the Berezinskii-Kosterlitz-Thousless transition in the two-dimensional XY model. It is an imporant example of phase transitions occuring without an ordered phase or symmetry breaking, and introduced topological ideas into the concerns of condensed matter physicists.

This paper begins with a brief review of theories and concepts that have influenced today’s view of enzyme catalysis: transition-state stabilization, entropy, orbital steering, proximity, and intramolecularity. The discussion then launches into the “spatiotemporal” model of enzyme catalysis in which fast intramolecular and enzymatic rates are ascribed to short distances that are imposed rigidly...

We calculate exactly the quantummechanical, temporalWigner quasiprobability density for a singlemode, degenerate parametric amplifier for a system in the Gaussian state, viz., a displaced-squeezed thermal state. The Wigner function allows us to calculate the fluctuations in photon number and the quadrature variance. We contrast the difference between the non-classicality criteria, which is inde...

Monte Carlo simulations of the classical two-dimensional discrete frustrated φ 4 model Abstract. The classical two-dimensional discrete frustrated φ 4 model is studied by Monte Carlo simulations. The correlation function is obtained for two values of a parameter d that determines the frustration in the model. The ground state is a ferro-phase for d = −0.35 and a commensurate phase with period N...

Monte Carlo simulations of the classical two-dimensional discrete frustrated φ 4 model Abstract. The classical two-dimensional discrete frustrated φ 4 model is studied by Monte Carlo simulations. The correlation function is obtained for two values of a parameter d that determines the frustration in the model. The ground state is a ferro-phase for d = −0.35 and a commensurate phase with period N...

In this paper, Burr-type XII ̄X synthetic schemes are proposed as an alternative to the classical ̄X synthetic schemes when the assumption of normality fails to hold. First, the basic design of the Burr-type XII ̄X synthetic scheme is developed and its performance investigated using exact formulae. Secondly, the non-side-sensitive and side-sensitive Burr-type XII ̄X synthetic schemes are int...

The main focus of this paper is the profound physical analogy between a continuum thermodynamical system, which evolves with relaxation under (possibly) nonisothermal conditions, and a classical mechanical system of a few interacting particles moving with dissipation in (possibly), time-dependent nonconservative fields. This analogy is applied to the problem of phase transitions in a one-dimens...