We analyze in detail the discrete-time quantum walk on the line by separating the quantum evolution equation into Markovian and interference terms. As a result of this separation, it is possible to show analytically that the quadratic increase in the variance of the quantum walker's position...

Using the methods of non-equilibrium thermodynamics, we show that the energy principles of plasma stability theory have a common thermodynamic origin. A Lyapunov function, which physically has the meaning of an entropy excess, can be unambiguously constructed under the proviso that no...

We report a theoretical and experimental study of the scattering of an ultrasonic wave by a vortical flow. The flow consists of a completely filled cylinder driven by the constant rotation of the two end walls. The angular momentum generated by the disk rotation is concentrated in a strong axial...

The one-body dissipation mechanism has been successfully employed in the description of nuclear reactions at intermediate energies. However, detailed simulations show that quantum localization would strongly suppress this dissipation mechanism. The fact that particle emission accompanies the...

In this work we report experimental results about the time-dependent amplitude at a single point in Faraday instability. We using a capacitive method in order to measurement the surface displacement.

Using information theory, a new variational principle for incompressible fluids is derived. This principle is similar to a known plasma stability criterion which has successfully been applied to study the stability of different steady flows. Its main advantages, when compared to traditional...

We address the question of how a quantum particle exchanges energy with a moving wall with an imposed smooth, periodic motion law. In the semiclassical region of parameter space, the energy gain of the particle is initially consistent with the classical result. This correspondence is maintained...