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Anisotropy-mediated...
Anisotropy-mediated reentrant localization
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- Deng, Xiaolong (författare)
- Leibniz Rechenzentrum, Boltzmannstr 1, D-85748 Garching, Germany.;Leibniz Univ Hannover, Inst Theoret Phys, Appelstr 2, D-30167 Hannover, Germany.
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- Burin, Alexander L. (författare)
- Tulane Univ, Dept Chem, New Orleans, LA 70118 USA.
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- Khaymovich, Ivan M., 1986- (författare)
- 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
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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)
- Stichting SciPost, 2022
- 2022
- Engelska.
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Ingår i: SciPost Physics. - : Stichting SciPost. - 2542-4653. ; 13:5
- Relaterad länk:
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https://doi.org/10.2...
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https://urn.kb.se/re...
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https://doi.org/10.2...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
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