## Search

Now showing items 11-18 of 18

#### Numerical Regge pole analysis of resonance structures in elastic, inelastic and reactive state-to-state integral cross sections

(2014-12-31)

We present a detailed description of a FORTRAN code for evaluation of the resonance contribution a Regge trajectory makes to the integral state-to-state cross section (ICS) within a specified range of energies. The ...

#### Impact of competitive processes on controlled radical polymerization

(2014-12-31)

The kinetics of radical polymerization have been systematically studied for nearly a century and in general are well understood. However, in light of recent developments in controlled radical polymerization many kinetic ...

#### 'Superluminal paradox' in wave packet propagation and its quantum mechanical resolution

(2013-12-31)

We analyse in detail the reshaping mechanism leading to apparently 'superluminal' advancement of a wave packet traversing a classically forbidden region. In the coordinate representation, a barrier is shown to act as an ...

#### Interference mechanism of seemingly superluminal tunneling

(2013-12-31)

Apparently "superluminal" transmission, e.g., in quantum tunneling and its variants, occurs via a subtle interference mechanism which allows reconstruction of the entire spatial shape of a wave packet from its front tail. ...

#### Causality, 'superluminality', and reshaping in undersized waveguides

(2012-12-31)

We analyse the reshaping mechanism leading to apparently 'superluminal' advancement of a pulse traversing an undersized section of a waveguide. For frequencies below the first inelastic threshold (cut off one), there are ...

#### Classification of resonance Regge trajectories and a modified Mulholland formula

(2011-12-31)

We employ a simple potential model to analyze the effects which a Regge trajectory, correlating with a bound or a metastable state at zero angular momentum, has on an integral cross section. A straightforward modification ...

#### Extracting S-matrix poles for resonances from numerical scattering data: Type-II Padé reconstruction

(2011-12-31)

We present a FORTRAN 77 code for evaluation of resonance pole positions and residues of a numerical scattering matrix element in the complex energy (CE) as well as in the complex angular momentum (CAM) planes. Analytical ...

#### Hartman effect and weak measurements that are not really weak

(2011-12-31)

We show that in wave packet tunneling, localization of the transmitted particle amounts to a quantum measurement of the delay it experiences in the barrier. With no external degree of freedom involved, the envelope of the ...