Elementary excitations of condensates in a Kronig-Penney potential

I. Danshita; S. Kurihara; S. Tsuchiya

doi:10.1063/1.2354597

Elementary excitations of condensates in a Kronig-Penney potential

I. Danshita^*, S. Kurihara, S. Tsuchiya

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We investigate the excitation spectrum of a Bose-Einstein condensate in a Kronig-Penney potential. We solve the Bogoliubov equations analytically and obtain the band structure of the excitation spectrum. We find that the excitation spectrum is gapless and linear at low energies. This property is found to be attributed to the anomalous tunneling behavior of low energy excitations, which has been predicted by Kagan et al.

Original language	English
Title of host publication	AIP Conference Proceedings
Pages	41-42
Number of pages	2
Volume	850
DOIs	https://doi.org/10.1063/1.2354597
Publication status	Published - 2006
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: 2006 Aug 10 → 2006 Oct 17

Other

Other	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	06/8/10 → 06/10/17

Keywords

Bose-Einstein condensation
Elementary excitation
Kronig-Penney model
Optical lattice

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2354597

Cite this

@inproceedings{572a2cc33fcc4bceb759c3cc02beeef6,

title = "Elementary excitations of condensates in a Kronig-Penney potential",

abstract = "We investigate the excitation spectrum of a Bose-Einstein condensate in a Kronig-Penney potential. We solve the Bogoliubov equations analytically and obtain the band structure of the excitation spectrum. We find that the excitation spectrum is gapless and linear at low energies. This property is found to be attributed to the anomalous tunneling behavior of low energy excitations, which has been predicted by Kagan et al.",

keywords = "Bose-Einstein condensation, Elementary excitation, Kronig-Penney model, Optical lattice",

author = "I. Danshita and S. Kurihara and S. Tsuchiya",

year = "2006",

doi = "10.1063/1.2354597",

language = "English",

isbn = "0735403473",

volume = "850",

pages = "41--42",

booktitle = "AIP Conference Proceedings",

note = "LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 ; Conference date: 10-08-2006 Through 17-10-2006",

}

TY - GEN

T1 - Elementary excitations of condensates in a Kronig-Penney potential

AU - Danshita, I.

AU - Kurihara, S.

AU - Tsuchiya, S.

PY - 2006

Y1 - 2006

N2 - We investigate the excitation spectrum of a Bose-Einstein condensate in a Kronig-Penney potential. We solve the Bogoliubov equations analytically and obtain the band structure of the excitation spectrum. We find that the excitation spectrum is gapless and linear at low energies. This property is found to be attributed to the anomalous tunneling behavior of low energy excitations, which has been predicted by Kagan et al.

AB - We investigate the excitation spectrum of a Bose-Einstein condensate in a Kronig-Penney potential. We solve the Bogoliubov equations analytically and obtain the band structure of the excitation spectrum. We find that the excitation spectrum is gapless and linear at low energies. This property is found to be attributed to the anomalous tunneling behavior of low energy excitations, which has been predicted by Kagan et al.

KW - Bose-Einstein condensation

KW - Elementary excitation

KW - Kronig-Penney model

KW - Optical lattice

UR - http://www.scopus.com/inward/record.url?scp=33947525719&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33947525719&partnerID=8YFLogxK

U2 - 10.1063/1.2354597

DO - 10.1063/1.2354597

M3 - Conference contribution

AN - SCOPUS:33947525719

SN - 0735403473

SN - 9780735403475

VL - 850

SP - 41

EP - 42

BT - AIP Conference Proceedings

T2 - LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24

Y2 - 10 August 2006 through 17 October 2006

ER -

Elementary excitations of condensates in a Kronig-Penney potential

Abstract

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this