Synthetic gauge fields in synthetic dimensions: interactions and chiral edge modes
| Autor: | Rosario Fazio, Leonardo Mazza, Davide Rossini, Luca Taddia, Simone Barbarino |
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| Přispěvatelé: | Barbarino, Simone, Taddia, Luca, Rossini, Davide, Mazza, Leonardo, Fazio, Rosario |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Spin states
media_common.quotation_subject FOS: Physical sciences General Physics and Astronomy Quantum Hall effect 01 natural sciences Asymmetry 010305 fluids & plasmas synthetic dimension Settore FIS/03 - Fisica della Materia Physics and Astronomy (all) synthetic gauge fields alkaline-earth(-like) atoms Ultracold atom Quantum mechanics 0103 physical sciences interactions and nonlinear effects Gauge theory Physics::Atomic Physics 010306 general physics Quantum media_common Spin-½ Physics Condensed Matter::Quantum Gases Quantum Physics Renormalization group density-matrix renormalization group and matrix-product states Quantum Gases (cond-mat.quant-gas) Quantum Physics (quant-ph) Condensed Matter - Quantum Gases |
| Zdroj: | New journal of physics 18 (2016): 035010–035010. doi:10.1088/1367-2630/18/3/035010 info:cnr-pdr/source/autori:Barbarino S., Taddia L., Rossini D., Mazza L., Fazio R./titolo:Synthetic gauge fields in synthetic dimensions: Interactions and chiral edge modes/doi:10.1088%2F1367-2630%2F18%2F3%2F035010/rivista:New journal of physics/anno:2016/pagina_da:035010/pagina_a:035010/intervallo_pagine:035010–035010/volume:18 |
| Popis: | Synthetic ladders realized with one-dimensional alkaline-earth(-like) fermionic gases and subject to a gauge field represent a promising environment for the investigation of quantum Hall physics with ultracold atoms. Using density-matrix renormalization group calculations, we study how the quantum Hall-like chiral edge currents are affected by repulsive atom-atom interactions. We relate the properties of such currents to the asymmetry of the spin resolved momentum distribution function, a quantity which is easily addressable in state-of-art experiments. We show that repulsive interactions significantly stabilize the quantum Hall-like helical region and enhance the chiral currents. Our numerical simulations are performed for atoms with two and three internal spin states. 16 pages, 8 figures, 1 appendix |
| Databáze: | OpenAIRE |
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