Generating Phase Shifts from Pseudostate Energy Shifts

Generating Phase Shifts from Pseudo State Energy Shifts

Inequalities between fixed energy phase shifts II

In this note we continue the study of the properties of phase shifts arising in the 3D inverse scattering with spherically symmetric potential. We provide various inequalities between the first two phase shift for some potential classes.

Generating Combinations by Prefix Shifts

We present a new Gray code for combinations that is practical and elegant. We represent combinations as bitstrings with s 0’s and t 1’s, and generate them with a remarkably simple rule: Identify the shortest prefix ending in 010 or 011 (or the entire bitstring if no such prefix exists) and then rotate (shift) it by one position to the right. Since the rotated portion of the string consists of a...

Neural encoding of binocular disparity: Energy models, position shifts and phase shifts

Neurophysiological data support two models for the disparity selectivity of binocular simple and complex cells in primary visual cortex. These involve binocular combinations of monocular receptive fields that are shifted in retinal position (the position-shift model) or in phase (the phase-shift model) between the two eyes. This article presents a formal description and analysis of a binocular ...

From Skyrmions to NN phase shifts.

We study the NN phaseshifts in a Hamiltonian obtained from quantization of the collective modes in the Skyrme model. We show that a combination of an adiabatic and diabatic approximation gives a good NN force, with sufficient attraction to produce a bound deuteron. The description of the repulsive core appears to be the main cause for the remaining discrepancies between the Skyrme model force a...