Interplay between shell structure and trap deformation in dipolar Fermi gases
(2020) In Physical Review A 102.- Abstract
- Finite fermion systems are known to exhibit shell structure in the weakly interacting regime, as is well known from atoms, nuclei, metallic clusters, or even quantum dots in two dimensions. All these systems have in common that the particle interactions between electrons or nucleons are spatially isotropic. Dipolar quantum systems as they have been realized with ultracold gases, however, are governed by an intrinsic anisotropy of the two-body interaction that depends on the orientation of the dipoles relative to each other. Here we investigate how this interaction anisotropy modifies the shell structure in a weakly interacting two-dimensional anisotropic harmonic trap. Going beyond Hartree-Fock analysis by applying the so-called... (More)
- Finite fermion systems are known to exhibit shell structure in the weakly interacting regime, as is well known from atoms, nuclei, metallic clusters, or even quantum dots in two dimensions. All these systems have in common that the particle interactions between electrons or nucleons are spatially isotropic. Dipolar quantum systems as they have been realized with ultracold gases, however, are governed by an intrinsic anisotropy of the two-body interaction that depends on the orientation of the dipoles relative to each other. Here we investigate how this interaction anisotropy modifies the shell structure in a weakly interacting two-dimensional anisotropic harmonic trap. Going beyond Hartree-Fock analysis by applying the so-called importance-truncated configuration-interaction (CI) method as well as quadratic CI with single and double substitutions, we show how the magnetostriction in the system may be counteracted upon by a deformation of the confinement. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/34bcabf6-6a6f-4562-a84a-cdfbfcbf3a41
- author
- Bengtsson, Jakob LU ; Eriksson, Gunnar LU ; Yousefi, Yousef LU ; Reimann, Stephanie M LU and Cremon, Jonas LU
- organization
- publishing date
- 2020-11-04
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review A
- volume
- 102
- article number
- 053302
- publisher
- American Physical Society
- external identifiers
-
- scopus:85096313431
- ISSN
- 2469-9926
- DOI
- 10.1103/PhysRevA.102.053302
- language
- English
- LU publication?
- yes
- id
- 34bcabf6-6a6f-4562-a84a-cdfbfcbf3a41
- date added to LUP
- 2020-11-17 17:07:08
- date last changed
- 2023-11-06 03:59:21
@article{34bcabf6-6a6f-4562-a84a-cdfbfcbf3a41,
abstract = {{Finite fermion systems are known to exhibit shell structure in the weakly interacting regime, as is well known from atoms, nuclei, metallic clusters, or even quantum dots in two dimensions. All these systems have in common that the particle interactions between electrons or nucleons are spatially isotropic. Dipolar quantum systems as they have been realized with ultracold gases, however, are governed by an intrinsic anisotropy of the two-body interaction that depends on the orientation of the dipoles relative to each other. Here we investigate how this interaction anisotropy modifies the shell structure in a weakly interacting two-dimensional anisotropic harmonic trap. Going beyond Hartree-Fock analysis by applying the so-called importance-truncated configuration-interaction (CI) method as well as quadratic CI with single and double substitutions, we show how the magnetostriction in the system may be counteracted upon by a deformation of the confinement.}},
author = {{Bengtsson, Jakob and Eriksson, Gunnar and Yousefi, Yousef and Reimann, Stephanie M and Cremon, Jonas}},
issn = {{2469-9926}},
language = {{eng}},
month = {{11}},
publisher = {{American Physical Society}},
series = {{Physical Review A}},
title = {{Interplay between shell structure and trap deformation in dipolar Fermi gases}},
url = {{http://dx.doi.org/10.1103/PhysRevA.102.053302}},
doi = {{10.1103/PhysRevA.102.053302}},
volume = {{102}},
year = {{2020}},
}