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28 records were found.

Time for pulse traversal through slabs of dispersive and negative ($\epsilon$, $\mu$) materials

Comment: 9 pages, 9 figures, Submitted to Phys. Rev. A

Traversal of pulses through negative ($\varepsilon$, $\mu$) materials

Comment: 12 pages,9 figures

Spectral shifts in the properties of a periodic multilayered stack due to isotropic chiral layers

Comment: accepted for publication in J Opt A

Diffusion at constant speed in a model phase space

Comment: Final corrected version RevTeX, 6 pages, 1 figure

Correcting the quantum clock: conditional sojourn times

Can the quantum-mechanical sojourn time be clocked without the clock affecting the sojourn time? Here we re-examine the previously proposed non-unitary clock, involving absorption/amplification by an added infinitesimal imaginary potential($iV_{i}$), and find it {\it not} to preserve, in general, the positivity of the sojourn time, conditional on eventual reflection or transmission. The sojourn time is found to be affected by the scattering concomitant with the mismatch, however small, due to the very clock potential($iV_{i}$) introduced for the purpose, as also by any prompt scattering involving partial waves that have not traversed the region of interest. We propose a formal procedure whereby the sojourn time so clocked can be corrected for these spurious scattering effects. The resulting conditional sojourn times are then positive...

Distribution of the delay time and the dwell time for wave reflection from a long random potential

Comment: Final version with minor corrections in text, 4 pages, 2 PS figures

Diffusion of particles moving with constant speed

Comment: 9 pages, 9 figures(Submitted to Phys. Rev. E)

Imaginary Potential as a Counter of Delay Time for Wave Reflection from a 1D Random Potential

Comment: 4 pages, RevTeX, replaced with added proof, figure and references. To appear in Phys. Rev. B Jan01 2000

The conditional tunneling time for reflection using the WKB wave-function

We derive an expression for the conditional time for the reflection of a wave from an arbitrary potential barrier using the WKB wavefunction in the barrier region. Our result indicates that the conditional times for transmission and reflection are equal for a symmetric barrier within the validity of the WKB approach.

Switching a plasma-like metamaterial via embedded resonant atoms exhibiting electromagnetically induced transparency

Comment: 9 pages, 3 figures