| Full text | |
| Author(s): |
Adhikari, S. K.
Total Authors: 1
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| 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 |