Vortices in small Bose or Fermi systems with repulsive interactions

J. Christensson; M. Borgh; M. Koskinen; G. Kavoulakis; M. Manninen; S. M. Reimann

doi:10.1007/s00601-008-0226-6

Vortices in small Bose or Fermi systems with repulsive interactions

J. Christensson, M. Borgh, M. Koskinen, G. Kavoulakis, M. Manninen, S. M. Reimann

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

1 Citation (Scopus)

Abstract

For rotating Bose-Einstein condensates, the occurrence of vortices has been much discussed in the Gross-Pitaevskii approach. Here, we study vortex formation in finite systems with few particles for weak and repulsive two-body interactions, by numerical diagonalization. Vortex formation is surprisingly similar for both (spinless) bosonic and fermionic particles. Breaking the rotational invariance of the Hamiltonian of the system reveals the vortex patterns. A transformation from a many-fermion to a many-boson state is proposed.

Original language	English
Pages (from-to)	161-166
Number of pages	6
Journal	Few-Body Systems
Volume	43
Issue number	1-4
DOIs	https://doi.org/10.1007/s00601-008-0226-6
Publication status	Published - 14 Nov 2008
Externally published	Yes

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AU - Christensson, J.

AU - Borgh, M.

AU - Koskinen, M.

AU - Kavoulakis, G.

AU - Manninen, M.

AU - Reimann, S. M.

PY - 2008/11/14

Y1 - 2008/11/14

N2 - For rotating Bose-Einstein condensates, the occurrence of vortices has been much discussed in the Gross-Pitaevskii approach. Here, we study vortex formation in finite systems with few particles for weak and repulsive two-body interactions, by numerical diagonalization. Vortex formation is surprisingly similar for both (spinless) bosonic and fermionic particles. Breaking the rotational invariance of the Hamiltonian of the system reveals the vortex patterns. A transformation from a many-fermion to a many-boson state is proposed.

AB - For rotating Bose-Einstein condensates, the occurrence of vortices has been much discussed in the Gross-Pitaevskii approach. Here, we study vortex formation in finite systems with few particles for weak and repulsive two-body interactions, by numerical diagonalization. Vortex formation is surprisingly similar for both (spinless) bosonic and fermionic particles. Breaking the rotational invariance of the Hamiltonian of the system reveals the vortex patterns. A transformation from a many-fermion to a many-boson state is proposed.

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Vortices in small Bose or Fermi systems with repulsive interactions

Abstract

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