Bragg spectroscopy of a strongly interacting Bose-Einstein condensate

J. J. Kinnunen; M. J. Holland

doi:10.1088/1367-2630/11/1/013030

Bragg spectroscopy of a strongly interacting Bose-Einstein condensate

J. J. Kinnunen^*, M. J. Holland

^*Corresponding author for this work

Not published at Aalto University

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

We study Bragg spectroscopy of a strongly interacting Bose Einstein condensate using time-dependent Hartree-Fock-Bogoliubov theory. We include approximatively the effect of the momentum-dependent scattering amplitude which is shown to be the dominant factor in determining the spectrum for large momentum Bragg scattering. The condensation of the Bragg scattered atoms is shown to alter significantly the observed excitation spectrum by creating a novel pairing channel of mobile pairs.

Original language	English
Article number	013030
Number of pages	12
Journal	New Journal of Physics
Volume	11
DOIs	https://doi.org/10.1088/1367-2630/11/1/013030
Publication status	Published - 20 Jan 2009
MoE publication type	A1 Journal article-refereed

Keywords

HARD SPHERES
GROUND-STATE
SYSTEM
EXCITATION
SPECTRUM
GAS

Access to Document

10.1088/1367-2630/11/1/013030

Cite this

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title = "Bragg spectroscopy of a strongly interacting Bose-Einstein condensate",

abstract = "We study Bragg spectroscopy of a strongly interacting Bose Einstein condensate using time-dependent Hartree-Fock-Bogoliubov theory. We include approximatively the effect of the momentum-dependent scattering amplitude which is shown to be the dominant factor in determining the spectrum for large momentum Bragg scattering. The condensation of the Bragg scattered atoms is shown to alter significantly the observed excitation spectrum by creating a novel pairing channel of mobile pairs.",

keywords = "HARD SPHERES, GROUND-STATE, SYSTEM, EXCITATION, SPECTRUM, GAS",

author = "Kinnunen, {J. J.} and Holland, {M. J.}",

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AU - Holland, M. J.

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N2 - We study Bragg spectroscopy of a strongly interacting Bose Einstein condensate using time-dependent Hartree-Fock-Bogoliubov theory. We include approximatively the effect of the momentum-dependent scattering amplitude which is shown to be the dominant factor in determining the spectrum for large momentum Bragg scattering. The condensation of the Bragg scattered atoms is shown to alter significantly the observed excitation spectrum by creating a novel pairing channel of mobile pairs.

AB - We study Bragg spectroscopy of a strongly interacting Bose Einstein condensate using time-dependent Hartree-Fock-Bogoliubov theory. We include approximatively the effect of the momentum-dependent scattering amplitude which is shown to be the dominant factor in determining the spectrum for large momentum Bragg scattering. The condensation of the Bragg scattered atoms is shown to alter significantly the observed excitation spectrum by creating a novel pairing channel of mobile pairs.

KW - HARD SPHERES

KW - GROUND-STATE

KW - SYSTEM

KW - EXCITATION

KW - SPECTRUM

KW - GAS

U2 - 10.1088/1367-2630/11/1/013030

DO - 10.1088/1367-2630/11/1/013030

M3 - Article

VL - 11

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

M1 - 013030

ER -