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  From Few to Many: Observing the Formation of a Fermi Sea One Atom at a Time

Wenz, A. N., Zürn, G., Murmann, S., Brouzos, I., Lompe, T., & Jochim, S. (2013). From Few to Many: Observing the Formation of a Fermi Sea One Atom at a Time. Science, 342(6157), 457-460. doi:10.1126/science.1240516.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-A218-1 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-A219-0
Genre: Journal Article

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 Creators:
Wenz, A. N.1, 2, Author           
Zürn, G.1, 2, Author           
Murmann, Simon1, 2, Author           
Brouzos, I.3, Author
Lompe, T.1, 2, Author           
Jochim, S.1, 2, 4, Author           
Affiliations:
1Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547              
2Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, 69210 Heidelberg, Germany, ou_persistent22              
3Institut für Quanten-Informationsverarbeitung, Universität Ulm, 89069 Ulm, Germany., ou_persistent22              
4Extreme Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany, ou_persistent22              

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Free keywords: Condensed Matter, Quantum Gases, cond-mat.quant-gas
 Abstract: Knowing when a physical system has reached sufficient size for its macroscopic properties to be well described by many-body theory is difficult. We investigate the crossover from few to many-body physics by studying quasi one-dimensional systems of ultracold atoms consisting of a single impurity interacting with an increasing number of identical fermions. We measure the interaction energy of such a system as a function of the number of majority atoms for different strengths of the interparticle interaction. As we increase the number of majority atoms one by one we observe the fast convergence of the normalized interaction energy towards a many-body limit calculated for a single impurity immersed in a Fermi sea of majority particles.

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 Dates: 2013-10-25
 Publication Status: Published online
 Pages: 9 pages, 5 figures
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 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 1307.3443
DOI: 10.1126/science.1240516
URI: http://arxiv.org/abs/1307.3443
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Title: Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 342 (6157) Sequence Number: - Start / End Page: 457 - 460 Identifier: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1