We generalize the Weisskopf-Wigner theory for the line shape and transition rates of decaying states to the case of the energy-driven stochastic Schrödinger equation that has been used as a phenomenology for state vector reduction. Working to leading order in the perturbing potential inducing the decay, and assuming that the perturbing potential has vanishing matrix elements within the degenera...

The release of conduction-band electrons from a metal surface by a subfemtosecond extreme ultraviolet (XUV) pulse and their propagation through the solid provoke a dielectric response in the solid that acts back on the photoelectron wave packet. We calculated the (wake) potential associated with this photoelectron self-interaction in terms of bulk and surface plasmon excitations and show that i...

We review observations of extended regions of radio emission in clusters; these include diffuse emission in 'relics', and the large central regions commonly referred to as 'halos'. The spectral observations, as well as Faraday rotation measurements of background and cluster radio sources, provide the main evidence for large-scale intracluster magnetic fields and significant densities of relativ...

For the D = 5 Majorana neutrino mass operator to have a see-saw ultraviolet completion that is viable up to the Planck scale, the see-saw scale is bounded above due to triviality limits on the see-saw couplings. For supersymmetric see-saw models, with realistic neutrino mass textures, we compare constraints on the see-saw scale from triviality bounds, with those arising from experimental limits...

Modified Altarelli–Parisi splitting functions were lately proposed to model multi-parton radiation in a dense medium and describe jet quenching, one of most striking features of heavy-ion collisions. We implement mediummodified splitting functions in the HERWIG parton shower algorithm, which satisfies the angular ordering prescription, and present a few partonlevel results, such as transverse m...

We study traveling wave solutions of a system of integro–differential equations which describe the activity of large scale networks of excitatory neurons on spatially extended domains. The independent variables are the activity level u of a population of excitatory neurons which have long range connections, and a recovery variable v. We have found a critical value of the parameter β (β∗ > 0) th...

C. Adolph h, R. Akhunzyanov g, M.G. Alexeev aa, G.D. Alexeev g, A. Amoroso aa,ac, V. Andrieux v, V. Anosov g, A. Austregesilo j,q, B. Badełek ae, F. Balestra aa,ac, J. Barth d, G. Bauma, R. Beck c, Y. Bedfer v, A. Berlin b, J. Bernhardm, K. Bicker j,q, E.R. Bielert j, J. Bieling d, R. Birsa y, J. Bisplinghoff c, M. Bodlak s, M. Boer v, P. Bordalo l,1, F. Bradamante x,y, C. Braun h, A. Bressan x...

The technology of road construction is subjected to changes to cope up with changing vehicular pattern, construction materials and sub grade condition. Majority of the pavement failures could be attributed to the presence of poor sub grade conditions and expansive sub grade is one such problematic situation. Marine soils, because of the specific physico-chemical makeup are subjected to volume c...

The integral of the kinetic electrostatic surface wave dispersion relation is asymptotically evaluated to determine the frequencies of the normal modes and the corresponding Landau damping for the high frequency surface electron plasma wave and the low frequency surface ion acoustic wave. The asymptotically calculated Landau damping rates apply to the limiting cases of kx e <<1 and kx e >>1 whe...

We present a compact Laser Ultrasonic (LU) receiver based on two-wave mixing in photorefractive materials, for simultaneous measurement of the out-of-plane and of the in-plane displacements (2component). By taking advantage of recent developments in electronic processing, we achieved a compact optical architecture using only a single collecting aperture and a single laser probe beam. Complement...