Matches in SemOpenAlex for { <https://semopenalex.org/work/W2013150467> ?p ?o ?g. }
- W2013150467 abstract "Topological phases which host Majorana fermions can not be identified via local order parameters. We give simple nonlocal order parameters to distinguish quasi-one-dimensional (1D) topological superconductors of spinless fermions, for any interacting model in the absence of time reversal symmetry. These string or brane order parameters are natural for measurements in cold atom systems using quantum gas microscopy. We propose them as a way to identify symmetry-protected topological phases of Majorana fermions in cold atom experiments via bulk rather than edge degrees of freedom. Subsequently, we study two-dimensional (2D) topological superconductors via the quasi-1D limit of coupling $N$ identical chains on the cylinder. We classify the symmetric, interacting topological phases protected by the additional $mathbb{Z}_N$ translation symmetry. The phases include quasi-1D analogs of (i) the $p+ip$ chiral topological superconductor, which can be distinguished up to the 2D Chern number mod 2, and (ii) the 2D weak topological superconductor. We devise general rules for constructing nonlocal order parameters which distinguish the phases. These rules encode the signature of the fermionic topological phase in the symmetry properties of the terminating operators of the nonlocal string or brane. The nonlocal order parameters for some of these phases simply involve a product of the string order parameters for the individual chains. Finally, we give a physical picture of one of the topological phases as a condensate of certain defects, which motivates the form of the nonlocal order parameter and is reminiscent of higher dimensional constructions of topological phases." @default.
- W2013150467 created "2016-06-24" @default.
- W2013150467 creator A5041285188 @default.
- W2013150467 creator A5043780039 @default.
- W2013150467 date "2014-04-25" @default.
- W2013150467 modified "2023-10-18" @default.
- W2013150467 title "Detecting Majorana fermions in quasi-one-dimensional topological phases using nonlocal order parameters" @default.
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- W2013150467 doi "https://doi.org/10.1103/physrevb.89.155135" @default.
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