Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Improved effective-range expansions for small and large values of scattering length

Full text
Author(s):
Adhikari, S. K.
Total Authors: 1
Document type: Journal article
Source: European Journal of Physics; v. 39, n. 5 SEP 2018.
Web of Science Citations: 0
Abstract

The textbook effective-range expansion of scattering theory is useful in the analysis of low-energy scattering phenomenology when the scattering length vertical bar a vertical bar is much larger than the range R of the scattering potential: vertical bar a vertical bar >> R. Nevertheless, the same has been used for systems where the scattering length is much smaller than the range of the potential. We suggest and numerically study an effective-range expansion for vertical bar a vertical bar << R as well as improved two-parameter effective-range expansions for the cases vertical bar a vertical bar > R and vertical bar a vertical bar < R. The improved effective-range expansions for vertical bar a vertical bar > R and vertical bar a vertical bar < R reduce to the expansions for vertical bar a vertical bar/R >> 1 and vertical bar a vertical bar/R << 1, respectively, in appropriate limits. (AU)

FAPESP's process: 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support Opportunities: Special Projects
FAPESP's process: 12/00451-0 - Study of properties of Bose-Einstein Condensate: dipolar atoms and condensate of fermions
Grantee:Sadhan Kumar Adhikari
Support Opportunities: Research Projects - Thematic Grants