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Localization and fr...
Localization and fractality in disordered Russian Doll model
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- Motamarri, Vedant R. (author)
- Max Planck Inst Phys Komplexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany.;Indian Inst Technol, Mumbai 400076, Maharashtra, India.
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- Gorsky, Alexander S. (author)
- Inst Informat Transmiss Problems RAS, Moscow 127051, Russia.;Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia.
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- Khaymovich, Ivan M., 1986- (author)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Max-Planck-Institut für Physik komplexer Systeme, Germany; Russian Academy of Sciences, Russia,Nordita SU; Stockholm University, Hannes Alfvéns väg 12, Stockholm, SE-106 91, Sweden; 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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Max Planck Inst Phys Komplexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany;Indian Inst Technol, Mumbai 400076, Maharashtra, India. Inst Informat Transmiss Problems RAS, Moscow 127051, Russia.;Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia. (creator_code:org_t)
- Stichting SciPost, 2022
- 2022
- English.
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In: SciPost Physics. - : Stichting SciPost. - 2542-4653. ; 13:5
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https://doi.org/10.2...
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Abstract
Subject headings
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- Motivated by the interplay of Bethe-Ansatz integrability and localization in the Richardson model of superconductivity, we consider a time-reversal symmetry breaking deformation of this model, known as the Russian Doll Model (RDM), and implement diagonal on-site disorder. The localization and ergodicity-breaking properties of the single-particle spectrum are analyzed using a large-energy renormalization group (RG) over the momentum-space spectrum. Based on the above RG, we derive an effective Hamiltonian of the model, discover a fractal phase of non-ergodic delocalized states with the fractal dimension different from the paradigmatic Rosenzweig-Porter model and explain it in terms of the developed RG equations and the matrix-inversion trick.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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