{"controller"=>"catalog", "action"=>"show", "id"=>"239701424"}
  • EN
  • DA

Danish NationalResearch Database

  • Search Publications & Researchers
  • Open Access Indicator
  • Publications
  • Researchers
Example Finds records
water{} containing the word "water".
water supplies"{}" containing the phrase "water supplies".
author:"Doe, John"author:"{}" containing the prase "Doe, John" in the author field.
title:IEEEtitle:{} containing the word "IEEE" in the title field.
Need more help? Advanced search tutorial
  • Selected (0)
  • History

Finite Range Effects in Energies and Recombination Rates of Three Identical Bosons

    • Save to Mendeley
    • Export to BibTeX
    • Export to RIS
    • Email citation
Authors:
  • Sørensen, Peder Klokmose ;
    Close
    Department of Physics and Astronomy, Science and Technology, Aarhus University
  • V. Fedorov, D. ;
    Close
    Department of Physics and Astronomy, Science and Technology, Aarhus University
  • S. Jensen, A. ;
    Close
    Department of Physics and Astronomy, Science and Technology, Aarhus University
  • Zinner, Nikolaj Thomas
    Close
    Department of Physics and Astronomy, Science and Technology, Aarhus University
DOI:
10.1088/0953-4075/46/7/075301
Abstract:
We investigate finite-range effects in systems with three identical bosons. We calculate recombination rates and bound state spectra using two different finite-range models that have been used recently to describe the physics of cold atomic gases near Feshbach resonances where the scattering length is large. The models are built on contact potentials which take into account finite range effects; one is a two-channel model and the other is an effective range expansion model implemented through the boundary condition on the three-body wave function when two of the particles are at the same point in space. We compare the results with the results of the ubiquitous single-parameter zero-range model where only the scattering length is taken into account. Both finite range models predict variations of the well-known geometric scaling factor 22.7 that arises in Efimov physics. The threshold value at negative scattering length for creation of a bound trimer moves to higher or lower values depending on the sign of the effective range compared to the location of the threshold for the single-parameter zero-range model. Large effective ranges, corresponding to narrow resonances, are needed for the reduction to have any noticeable effect.
Type:
Journal article
Language:
English
Published in:
Journal of Physics B: Atomic, Molecular and Optical Physics, 2013, Vol 46, Issue 7
Keywords:
cond-mat.quant-gas; nucl-th; quant-ph
Main Research Area:
Science/technology
Publication Status:
Published
Review type:
Peer Review
Submission year:
2013
Scientific Level:
Scientific
ID:
239701424

Full text access

  • Doi Get publisher edition via DOI resolver
Checking for on-site access...

On-site access

At institution

  • Aarhus university.en

Metrics

Feedback

Sitemap

  • Search
    • Statistics
    • Tutorial
    • Data
    • FAQ
    • Contact
  • Open Access
    • Overview
    • Development
    • FAQ
    • Contact
  • About
    • Institutions
    • Release History
    • Cookies and privacy policy

Copyright © 1998–2018.

Fivu en