Measurement and significance of Wilson loops in synthetic gauge fields
| Autor: | Kunal K. Das |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Cyclic model
Physics Wilson loop High Energy Physics::Lattice FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas Theoretical physics Amplitude Quantum Gases (cond-mat.quant-gas) Ultracold atom Lattice (order) 0103 physical sciences Physics::Atomic Physics Abelian group Condensed Matter - Quantum Gases 010306 general physics |
| Zdroj: | Physical Review A. 97 |
| ISSN: | 2469-9934 2469-9926 |
| Popis: | We study Wilson loops as a necessary tool for unambiguous identification of non-Abelian synthetic gauge fields, with attention to certain crucial but often overlooked features, such as the requirement of at least three distinct loops. We devise a method to determine the complete Wilson loop matrix from the time evolved amplitudes of the internal atomic states of laser-coupled ultracold atoms that does not require lattice confinement. The analysis is done in the context of a new cyclic model that can realize both Abelian and non-Abelian structures within a single configuration with continuous variation possible between U(1) and U(2) gauge groups by varying the detuning of the laser fields. Comment: 7 pages; 5 figures |
| Databáze: | OpenAIRE |
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