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Analytically Solvable Renormalization Group for the Many-Body Localization Transition

Journal Article · · Physical Review Letters
 [1];  [2];  [3]
  1. Univ. of Geneva (Switzerland); Inst. of Science and Technology Austria, Klosterneuburg (Austria); UMass Amherst
  2. Univ. of Massachusetts, Amherst, MA (United States)
  3. Inst. of Science and Technology Austria, Klosterneuburg (Austria)
We introduce a simple, exactly solvable strong-randomness renormalization group (RG) model for the many-body localization (MBL) transition in one dimension. Our approach relies on a family of RG flows parametrized by the asymmetry between thermal and localized phases. We identify the physical MBL transition in the limit of maximal asymmetry, reflecting the instability of MBL against rare thermal inclusions. We find a critical point that is localized with power-law distributed thermal inclusions. The typical size of critical inclusions remains finite at the transition, while the average size is logarithmically diverging. We propose a two-parameter scaling theory for the many-body localization transition that falls into the Kosterlitz-Thouless universality class, with the MBL phase corresponding to a stable line of fixed points with multifractal behavior.
Research Organization:
Univ. of Massachusetts, Amherst, MA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0019168
OSTI ID:
1509473
Alternate ID(s):
OSTI ID: 1492475
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 122; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (23)

Quantum critical behaviour at the many-body localization transition journal September 2019
Slow dynamics and strong finite-size effects in many-body localization with random and quasiperiodic potentials journal September 2019
Entanglement transitions from holographic random tensor networks journal October 2019
Quantum criticality in Ising chains with random hyperuniform couplings journal October 2019
Measurement-induced criticality in random quantum circuits journal March 2020
Kosterlitz-Thouless scaling at many-body localization phase transitions journal March 2019
Percolation in Fock space as a proxy for many-body localization journal March 2019
Multiscale entanglement clusters at the many-body localization phase transition journal April 2019
Exact solution of a percolation analog for the many-body localization transition journal June 2019
Many-body localization in the presence of long-range interactions and long-range hopping journal June 2019
Renormalization-group study of the many-body localization transition in one dimension journal June 2019
Multifractal Scalings Across the Many-Body Localization Transition journal October 2019
Colloquium : Many-body localization, thermalization, and entanglement journal May 2019
Strong disorder RG approach – a short review of recent developments journal November 2018
Self-consistent theory of many-body localisation in a quantum spin chain with long-range interactions journal January 2019
Quantum criticality in Ising chains with random hyperuniform couplings text January 2018
Kosterlitz-Thouless scaling at many-body localization phase transitions text January 2018
Exact solution of a percolation analogue for the many-body localisation transition text January 2018
Quantum critical behavior at the many-body-localization transition text January 2018
Multifractal Scalings across the Many-Body Localization Transition text January 2018
Self-consistent theory of many-body localisation in a quantum spin chain with long-range interactions text January 2019
Measurement-induced criticality in random quantum circuits text January 2019
Slow dynamics and strong finite-size effects in many-body localization with random and quasiperiodic potentials text January 2019

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