Enhancing quantum order with fermions by increasing species degeneracy
| Autor: | Maciej M. Maśka, Paul Julienne, Khadijeh Najafi, James Freericks, Kahlil Y. Dixon |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Phase transition Optical lattice Hubbard model Condensed matter physics Degenerate energy levels FOS: Physical sciences Fermion 01 natural sciences 010305 fluids & plasmas Quantum Gases (cond-mat.quant-gas) Quantum mechanics 0103 physical sciences Antiferromagnetism Degeneracy (biology) 010306 general physics Condensed Matter - Quantum Gases Quantum |
| DOI: | 10.48550/arxiv.1706.01462 |
| Popis: | One of the challenges for fermionic cold atom experiments in optical lattices is to cool the systems to low enough temperature that they can form quantum degenerate ordered phases. In particular, there has been significant work in trying to find the antiferromagnetic phase transition of the Hubbard model in three dimensions, without success. Here, we attack this problem from a different angle by enhancing the ordering temperature via an increase in the degeneracy of the atomic species trapped in the optical lattice. In addition to developing the general theory, we also discuss some potential systems where one might be able to achieve these results experimentally. Comment: 5 pages, 2 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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