2012年
Quantum effects on one-dimensional collision dynamics of fermion clusters
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5
- ,
- ,
- 巻
- 400
- 号
- PART 1
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1088/1742-6596/400/1/012059
- 出版者・発行元
- IOP PUBLISHING LTD
Recently, many experiments with cold atomic gases have been conducted from interest in the non-equilibrium dynamics of correlated quantum systems. Of these experiments, the mixing dynamics of fermion clusters motivates us to research cluster-cluster collision dynamics in one-dimensional Fermi systems. We adopt the one-dimensional Fermi-Hubbard model and apply the time-dependent density matrix renormalization group method. We simulate collisions between two fermion clusters of spin-up and spin-down, and calculate reflectance of the clusters R changing the particle number in each cluster and the interaction strength between two fermions with up and down spins. We also evaluate the quasi-classical (independent collision) reflectance R-qc to compare it with R. The quasi-classical picture is quantitatively valid in the limit of weak interaction, but it is not valid when interaction is strong.
- リンク情報
- ID情報
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- DOI : 10.1088/1742-6596/400/1/012059
- ISSN : 1742-6588
- Web of Science ID : WOS:000314977100059