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Cited by 434

The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.

A one-dimensional liquid of fermions with tunable spin

Open access
Pagano, Guido, Mancini, Marco, Cappellini, Giacomo, Lombardi, Pietro, Schäfer, Florian, Hu, Hui, Liu, Xia-Ji, Catani, Jacopo, Sias, Carlo, Inguscio, Massimo, Fallani, Leonardo·2014·Nature Physics

Abstract

The physics of one-dimensional many-body systems is rich but still insufficiently understood. An ultracold atom experiment investigates the behaviour of one-dimensional strongly correlated fermions with a tunable number of spin components. Correlations in systems with spin degree of freedom are at the heart of fundamental phenomena, ranging from magnetism to superconductivity. The effects of correlations depend strongly on dimensionality, a striking example being one-dimensional (1D) electronic systems, extensively studied theoretically over the past fifty years1,2,3,4,5,6,7. However, the experimental investigation of the role of spin multiplicity in 1D fermions—and especially for more than two spin components—is still lacking. Here we report on the realization of 1D, strongly correlated liquids of ultracold fermions interacting repulsively within SU(N) symmetry, with a tunable number N of spin components. We observe that static and dynamic properties of the system deviate from those of ideal fermions and, for N > 2, from those of a spin-1/2 Luttinger liquid. In the large-N limit, the system exhibits properties of a bosonic spinless liquid. Our results provide a testing ground for many-body theories and may lead to the observation of fundamental 1D effects8.

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Crossref · 10.1038/nphys2878

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Metadata

Authors
Pagano, G., Mancini, M., Cappellini, G., Lombardi, P., Schäfer, F., Hu, H., Liu, X.-J., Catani, J., Sias, C., Inguscio, M., & Fallani, L.
Venue
Nature Physics
Published
2014-02-02
Volume
10
Issue
3
Pages
198-201
ISSN
  • 1745-2473 (ISSN-L)
  • 1745-2481
OpenAlex
W2244817433
Cited by
434
References
26
FWCI
26.79
Type
journal article
Language
en
Open access
bronze

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