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Anisotropy-mediated...
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Deng, XiaolongLeibniz Rechenzentrum, Boltzmannstr 1, D-85748 Garching, Germany.;Leibniz Univ Hannover, Inst Theoret Phys, Appelstr 2, D-30167 Hannover, Germany.
(författare)
Anisotropy-mediated reentrant localization
- Artikel/kapitelEngelska2022
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Stichting SciPost,2022
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LIBRIS-ID:oai:DiVA.org:kth-324405
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-324405URI
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https://doi.org/10.21468/SciPostPhys.13.5.116DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-215293URI
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Språk:engelska
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Sammanfattning på:engelska
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QC 20230301
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We consider a 2d dipolar system, d = 2, with the generalized dipole-dipole interaction similar to r(-a), and the power a controlled experimentally in trapped-ion or Rydberg-atom systems via their interaction with cavity modes. We focus on the dilute dipolar excitation case when the problem can be effectively considered as single-particle with the interaction providing long-range dipolar-like hopping. We show that the spatially homogeneous tilt beta of the dipoles giving rise to the anisotropic dipole exchange leads to the non-trivial reentrant localization beyond the locator expansion, a < d, unlike the models with random dipole orientation. The Anderson transitions are found to occur at the finite values of the tilt parameter beta = a, 0 < a < d, and beta = a =(a d =2), d =2 < a < d, showing the robustness of the localization at small and large anisotropy values. Both exact analytical methods and extensive numerical calculations show power-law localized eigenstates in the bulk of the spectrum, obeying recently discovered duality a <-> 2d -a of their spatial decay rate, on the localized side of the transition, a > a(AT). This localization emerges due to the presence of the ergodic extended states at either spectral edge, which constitute a zero fraction of states in the thermodynamic limit, decaying though extremely slowly with the system size.
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Burin, Alexander L.Tulane Univ, Dept Chem, New Orleans, LA 70118 USA.
(författare)
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Khaymovich, Ivan M.,1986-Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Max-Planck-Institut für Physik komplexer Systeme, Germany; Russian Academy of Sciences, Russia,Nordita SU; Max Planck Inst Phys Komplexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany.;Russian Acad Sci, Inst Phys Microstruct, GSP-105, Nizhnii Novgorod 603950, Russia(Swepub:su)ivkh7760
(författare)
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Leibniz Rechenzentrum, Boltzmannstr 1, D-85748 Garching, Germany.;Leibniz Univ Hannover, Inst Theoret Phys, Appelstr 2, D-30167 Hannover, Germany.Tulane Univ, Dept Chem, New Orleans, LA 70118 USA.
(creator_code:org_t)
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Ingår i:SciPost Physics: Stichting SciPost13:52542-4653
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