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Quantum impurity mo...
Quantum impurity model for anyons
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- Yakaboylu, E. (författare)
- IST Austria Inst Sci & Technol Austria, Campus 1, A-3400 Klosterneuburg, Austria.
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- Ghazaryan, A. (författare)
- IST Austria Inst Sci & Technol Austria, Campus 1, A-3400 Klosterneuburg, Austria.
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- Lundholm, Douglas (författare)
- Uppsala universitet,Analys och sannolikhetsteori
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- Rougerie, N. (författare)
- Univ Grenoble Alpes, BP 166, F-38042 Grenoble, France.;CNRS, LPMMC, UMR 5493, BP 166, F-38042 Grenoble, France.
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- Lemeshko, M. (författare)
- IST Austria Inst Sci & Technol Austria, Campus 1, A-3400 Klosterneuburg, Austria.
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- Seiringer, R. (författare)
- IST Austria Inst Sci & Technol Austria, Campus 1, A-3400 Klosterneuburg, Austria.
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IST Austria Inst Sci & Technol Austria, Campus 1, A-3400 Klosterneuburg, Austria Analys och sannolikhetsteori (creator_code:org_t)
- American Physical Society (APS), 2020
- 2020
- Engelska.
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Ingår i: Physical Review B. - : American Physical Society (APS). - 2469-9950 .- 2469-9969. ; 102:14
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- One of the hallmarks of quantum statistics, tightly entwined with the concept of topological phases of matter, is the prediction of anyons. Although anyons are predicted to be realized in certain fractional quantum Hall systems, they have not yet been unambiguously detected in experiment. Here we introduce a simple quantum impurity model, where bosonic or fermionic impurities turn into anyons as a consequence of their interaction with the surrounding many-particle bath. A cloud of phonons dresses each impurity in such a way that it effectively attaches fluxes or vortices to it and thereby converts it into an Abelian anyon. The corresponding quantum impurity model, first, provides a different approach to the numerical solution of the many-anyon problem, along with a concrete perspective of anyons as emergent quasiparticles built from composite bosons or fermions. More importantly, the model paves the way toward realizing anyons using impurities in crystal lattices as well as ultracold gases. In particular, we consider two heavy electrons interacting with a two-dimensional lattice crystal in a magnetic field, and show that when the impurity-bath system is rotated at the cyclotron frequency, impurities behave as anyons as a consequence of the angular momentum exchange between the impurities and the bath. A possible experimental realization is proposed by identifying the statistics parameter in terms of the mean-square distance of the impurities and the magnetization of the impurity-bath system, both of which are accessible to experiment. Another proposed application is impurities immersed in a two-dimensional weakly interacting Bose gas.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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