Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interplay between shell structure and trap deformation in dipolar fermi
  gases   Finite fermion systems are known to exhibit shell structure in the
weakly-interacting regime, as 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 ultra-cold
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 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 isotropic confinement, restoring the
symmetry.

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The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat