Localization Transitions in a Half-Filled Helical Aubry-Andr\'e Model
Pith reviewed 2026-05-20 00:28 UTC · model grok-4.3
The pith
In the helical Aubry-André model, stronger Nth-neighbor hopping shifts the localization transition to higher quasiperiodic potentials, with spikes at commensurate N.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
The central claim is that the critical quasiperiodic potential strength at which the half-filled helical Aubry-André chain localizes rises with increasing helical hopping amplitude J_N, and that this critical value varies non-monotonically with the helical range N because of commensurability between the hopping distance and the underlying lattice periodicity.
What carries the argument
Geometric Binder cumulant formed from the polarization amplitudes of the many-body Slater determinant, whose zero crossing locates the delocalization-localization transition.
If this is right
- Stronger helical hopping stabilizes the extended phase by shifting the critical potential upward.
- The N-dependence of the critical potential exhibits pronounced commensurability-induced spikes.
- The geometric Binder cumulant and the Fermi gap depart from their extended-phase values in the same parameter window.
- The Zeckendorf-shift construction keeps the many-body sector fixed while system size tends to infinity along Fibonacci numbers.
Where Pith is reading between the lines
- Tuning helical range and strength could provide a practical handle for controlling localization lengths in quasiperiodic optical lattices.
- The same helical construction might be applied to interacting or disordered versions of the model to test whether the stabilization of extended states survives.
- The winding aspect of the helical chain suggests possible links to topological invariants that could be checked by adding a synthetic dimension.
Load-bearing premise
The geometric Binder cumulant built from polarization amplitudes correctly identifies the delocalization-localization transition and remains reliable under the Zeckendorf-shift construction for the thermodynamic limit along Fibonacci sizes.
What would settle it
Direct computation of the inverse participation ratio or wave-function localization length on large Fibonacci-sized chains that places the transition at a markedly different critical potential than the zero crossing of the geometric Binder cumulant.
Figures
read the original abstract
We study localization in a one-dimensional quasiperiodic lattice obtained by extending the Aubry-Andr\'e model with an additional $N$th-neighbor hopping term of strength $J_{N}$. This long-range tunneling couples successive windings of an effective helical chain and introduces a second control parameter beyond the quasiperiodic potential strength $\Delta$. Working with noninteracting fermions (typically at half filling), we diagnose the delocalization-localization transition using extensions of the modern theory of polarization. Specifically, we compute the polarization amplitudes of the many-body Slater-determinant ground state and construct a geometric Binder cumulant from polarization amplitudes. The critical potential where the localization transition happens is extracted from the sign change (zero crossing) of the geometric Binder cumulant. We map critical potential as a function of $J_N$ and the helical range $N$, finding that stronger helical hopping generally stabilizes the extended phase (shifting critical potential upward), while the $N$-dependence can display pronounced commensurability-induced spikes. We further compare the geometric Binder cumulant with the Fermi gap, which remains near zero at small values of potential and opens in the same parameter regime where the geometric Binder cumulant departs from extended phase. Finally, to take a controlled thermodynamic limit along Fibonacci system sizes, we employ a Zeckendorf-shift construction that fixes the many-body sector consistently as system size goes to infinity.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper studies localization transitions in a one-dimensional quasiperiodic lattice extending the Aubry-André model by an additional Nth-neighbor helical hopping term of strength J_N. For noninteracting fermions at half filling, the delocalization-localization transition is diagnosed via polarization amplitudes of the many-body Slater-determinant ground state, from which a geometric Binder cumulant is constructed; the critical potential Δ_c is identified at the zero crossing of this cumulant. The authors map Δ_c(J_N, N), reporting that stronger helical hopping generally stabilizes the extended phase (raising Δ_c) with possible commensurability-induced spikes in the N dependence. Consistency with the opening of the Fermi gap is noted, and a Zeckendorf-shift construction is used to approach the thermodynamic limit along Fibonacci sizes while keeping the many-body sector fixed.
Significance. If the geometric Binder cumulant is shown to locate the transition reliably, the work extends the modern theory of polarization to long-range helical quasiperiodic models and supplies a concrete many-body diagnostic for the extended-to-localized crossover. The reported stabilization of the extended phase by J_N and the controlled thermodynamic limit via the Zeckendorf-shift construction are strengths that could be useful for related studies of quasiperiodic localization. The comparison to the Fermi gap provides an internal consistency check, though the overall significance depends on further validation against single-particle measures.
major comments (2)
- [Results section on the geometric Binder cumulant and critical-potential extraction] The central mapping of critical Δ(J_N, N) rests on the geometric Binder cumulant zero-crossing correctly identifying the transition. The manuscript shows consistency with Fermi-gap opening but does not provide an explicit benchmark against conventional single-particle diagnostics such as the inverse participation ratio or Lyapunov exponent for the helical long-range model; this comparison is load-bearing for the headline claim.
- [Section on the Zeckendorf-shift thermodynamic limit] In the thermodynamic-limit construction, the Zeckendorf-shift is used to reach Fibonacci sizes while fixing the many-body sector. No explicit finite-size scaling or convergence test is reported that confirms the cumulant zero-crossing remains stable and coincides with the transition as system size increases; this is required to substantiate the N-dependence and commensurability spikes.
minor comments (2)
- [Methods] The definition of the geometric Binder cumulant from polarization amplitudes would benefit from an explicit equation or short derivation to clarify its construction for readers unfamiliar with the polarization framework.
- [Figure captions] Figure captions should explicitly state the system sizes and the precise definition of the helical range N used in each panel to improve reproducibility.
Simulated Author's Rebuttal
We thank the referee for the careful reading and constructive comments. We address the two major comments point by point below, indicating where revisions have been made to strengthen the manuscript.
read point-by-point responses
-
Referee: [Results section on the geometric Binder cumulant and critical-potential extraction] The central mapping of critical Δ(J_N, N) rests on the geometric Binder cumulant zero-crossing correctly identifying the transition. The manuscript shows consistency with Fermi-gap opening but does not provide an explicit benchmark against conventional single-particle diagnostics such as the inverse participation ratio or Lyapunov exponent for the helical long-range model; this comparison is load-bearing for the headline claim.
Authors: We agree that an explicit benchmark against single-particle diagnostics strengthens the validation of the geometric Binder cumulant. In the revised manuscript we have added a direct comparison between the critical Δ_c extracted from the cumulant zero-crossing and the critical point obtained from the inverse participation ratio (IPR) computed on the single-particle eigenstates of the helical model. The two diagnostics agree within numerical resolution for the range of J_N and N studied. For the Lyapunov exponent we note that its standard definition via transfer matrices must be adapted for long-range hopping; we have therefore used the IPR as the primary single-particle benchmark while briefly discussing the challenges of the Lyapunov approach in the text. revision: yes
-
Referee: [Section on the Zeckendorf-shift thermodynamic limit] In the thermodynamic-limit construction, the Zeckendorf-shift is used to reach Fibonacci sizes while fixing the many-body sector. No explicit finite-size scaling or convergence test is reported that confirms the cumulant zero-crossing remains stable and coincides with the transition as system size increases; this is required to substantiate the N-dependence and commensurability spikes.
Authors: We acknowledge the importance of demonstrating stability under the Zeckendorf-shift construction. In the revised manuscript we have added a finite-size convergence analysis for representative values of N and J_N. We show the location of the geometric Binder cumulant zero-crossing for successive Fibonacci system sizes (F_k with k up to 15) and demonstrate that the extracted Δ_c converges to a stable value with increasing size. This supports both the overall N-dependence and the presence of commensurability-induced features. revision: yes
Circularity Check
Geometric Binder cumulant from polarization amplitudes locates transition; minor self-citation present but not load-bearing
full rationale
The paper extracts critical Delta(J_N, N) from the zero-crossing of a geometric Binder cumulant built from polarization amplitudes of the half-filled Slater-determinant ground state, then maps its N-dependence and compares to the Fermi gap. This diagnostic is drawn from the external modern theory of polarization rather than being defined in terms of the fitted critical value itself. The Zeckendorf-shift construction for the thermodynamic limit along Fibonacci sizes is presented as a technical device to keep the many-body sector fixed; no equation reduces the cumulant or the critical-point location to a prior fit or to a self-citation chain that itself lacks independent verification. One minor self-citation appears in the polarization framework but does not carry the central claim. The overall derivation therefore remains self-contained against external benchmarks.
Axiom & Free-Parameter Ledger
axioms (2)
- domain assumption The modern theory of polarization applies to the many-body Slater-determinant ground state of noninteracting fermions.
- domain assumption The Zeckendorf-shift construction maintains a consistent many-body sector while taking the thermodynamic limit along Fibonacci system sizes.
Lean theorems connected to this paper
-
IndisputableMonolith.Foundation.ArithmeticFromLogicembed_eq_pow, phi_golden_ratio echoes?
echoesECHOES: this paper passage has the same mathematical shape or conceptual pattern as the Recognition theorem, but is not a direct formal dependency.
Zeckendorf-shift construction... Np = sum Fα ... Lm=Fn0+m, Nm=sum Fα+m ... ν∞ = sum φ^{-dα}
-
IndisputableMonolith.Constantsphi_gt_onePointFive, phi3_eq echoes?
echoesECHOES: this paper passage has the same mathematical shape or conceptual pattern as the Recognition theorem, but is not a direct formal dependency.
Fibonacci system sizes L=Fn ... asymptotic filling close to one half
What do these tags mean?
- matches
- The paper's claim is directly supported by a theorem in the formal canon.
- supports
- The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
- extends
- The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
- uses
- The paper appears to rely on the theorem as machinery.
- contradicts
- The paper's claim conflicts with a theorem or certificate in the canon.
- unclear
- Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.
Reference graph
Works this paper leans on
-
[1]
P. W. Anderson, Absence of Diffusion in Certain Random Lattices, Phys. Rev. 109, 1492 (1958)
work page 1958
-
[2]
E. Abrahams, P. W. Anderson, D. C. Licciardello, and T. V. Ramakrishnan, Scaling theory of localization: Ab- sence of quantum diffusion in two dimensions, Phys. Rev. Let. 42, 673 (1979)
work page 1979
-
[3]
F. Evers and A. D. Mirlin, Anderson transitions, Rev. Mod. Phys. 80, 1355 (2008)
work page 2008
-
[4]
S. Aubry and G. André, Analyticity breaking and Ander- son localization in incommensurate lattices, Ann. Israel 10 Phys. Soc 3, 18 (1980)
work page 1980
-
[5]
P. G. Harper, Single band motion of conduction electrons in a uniform magnetic field, Proc. Phys. Soc. Sect. A 68, 874 (1955)
work page 1955
-
[6]
S. Y. Jitomirskaya, Metal-insulator transition for the al- most mathieu operator, Annals of Mathematics , 1159 (1999)
work page 1999
-
[7]
C. Soukoulis and E. Economou, Localization in One- Dimensional Lattices in the Presence of Incommensurate Potentials, Phys. Rev. Lett. 48, 1043 (1982)
work page 1982
- [8]
- [9]
-
[10]
M. Rossignolo and L. Dell’Anna, Localization transitions and mobility edges in coupled Aubry-André chains, Phys. Rev. B 99, 054211 (2019)
work page 2019
-
[11]
C. W. Duncan, Critical states and anomalous mobility edges in two-dimensional diagonal quasicrystals, Phys. Rev. B 109, 014210 (2024)
work page 2024
-
[12]
X. Deng, S. Ray, S. Sinha, G. Shlyapnikov, and L. Santos, One-dimensional quasicrystals with power-law hopping, Phys. Rev. Lett. 123, 025301 (2019)
work page 2019
-
[13]
J. Biddle and S. Das Sarma, Predicted Mobility Edges in One-Dimensional Incommensurate Optical Lattices: An Exactly Solvable Model of Anderson Localization, Phys. Rev. Lett. 104, 070601 (2010)
work page 2010
-
[14]
S. Ganeshan, J. Pixley, and S. Das Sarma, Nearest neigh- bor tight binding models with an exact mobility edge in one dimension, Phys. Rev. Lett. 114, 146601 (2015)
work page 2015
-
[15]
M. Dziurawiec, J. O. de Almeida, M. L. Bera, M. Płodzień, M. M. Maśka, M. Lewenstein, T. Grass, and U. Bhattacharya, Unraveling multifractality and mo- bility edges in quasiperiodic aubry-andré-harper chains through high-harmonic generation, Phys. Rev. B 110, 014209 (2024)
work page 2024
- [16]
-
[17]
M. Johansson and R. Riklund, Self-dual model for one- dimensional incommensurate crystals including next- nearest-neighbor hopping, and its relation to the Hofs- tadter model, Phys. Rev. B 43, 13468 (1991)
work page 1991
-
[18]
L. Gong, Y. Feng, and Y. Ding, Anderson localiza- tion in one-dimensional quasiperiodic lattice models with nearest-and next-nearest-neighbor hopping, Phys. Lett. A 381, 588 (2017)
work page 2017
-
[19]
T. Yildiz and B. Tanatar, Localization and persistent cur- rents in a quasiperiodic disordered helical lattice, Scien- tific Reports 15, 37307 (2025)
work page 2025
-
[20]
D. Vu, K. Huang, X. Li, and S. Das Sarma, Fermionic many-body localization for random and quasiperiodic systems in the presence of short-and long-range inter- actions, Phys. Rev. Lett. 128, 146601 (2022)
work page 2022
-
[21]
S. Ray, M. Pandey, A. Ghosh, and S. Sinha, Localization of weakly interacting Bose gas in quasiperiodic potential, New J. Phys. 18, 013013 (2015)
work page 2015
-
[22]
S. Bera, H. Schomerus, F. Heidrich-Meisner, and J. H. Bardarson, Many-body localization characterized from a one-particle perspective, Phys. Rev. Lett. 115, 046603 (2015)
work page 2015
-
[23]
S. Roy, T. Mishra, B. Tanatar, and S. Basu, Reentrant Localization Transition in a Quasiperiodic Chain, Phys. Rev. Lett. 126, 106803 (2021)
work page 2021
-
[24]
S. Ganguly, S. Sarkar, K. Mondal, and S. K. Maiti, Phe- nomenon of multiple reentrant localization in a double- stranded helix with transverse electric field, Sci. Reports 14, 3059 (2024)
work page 2024
- [25]
-
[26]
S. Roy, S. Chattopadhyay, T. Mishra, and S. Basu, Crit- ical analysis of the reentrant localization transition in a one-dimensional dimerized quasiperiodic lattice, Phys. Rev. B 105, 214203 (2022)
work page 2022
- [27]
-
[28]
X.-M. Wang, S.-Z. Li, and Z. Li, Emergent topological re-entrant phase transition in a generalized quasiperi- odic modulated Su-Schrieffer-Heeger model, Phys. Rev. A 111, 022214 (2025)
work page 2025
-
[29]
S. Ganguly, S. Chattopadhyay, K. Mondal, and S. K. Maiti, Critical analysis of multiple reentrant localiza- tion in an antiferromagnetic helix with transverse electric field: Hopping dimerization-free scenario, SciPost Phys. 8, 012 (2025)
work page 2025
-
[30]
P.-J. Chang, Q.-B. Zeng, J. Pi, D. Ruan, and G.-L. Long, Investigation of reentrant localization transition in one- dimensional quasi-periodic lattice with long-range hop- ping, New J. Phys. 27, 053501 (2025)
work page 2025
- [31]
-
[32]
C. Wu, J. Fan, G. Chen, and S. Jia, Non-Hermiticity- induced reentrant localization in a quasiperiodic lattice, New J. Phys. 23, 123048 (2021)
work page 2021
- [33]
-
[34]
H. Wang, X. Zheng, L. Xiao, S. Jia, J. Chen, and L. Zhang, Coexistence of reentrant localization and dynamical delocalization in a one-dimensional non- Hermitian quasiperiodic lattice, Phys. Rev. B 112, 054202 (2025)
work page 2025
- [35]
-
[36]
M. Schreiber, S. S. Hodgman, P. Bordia, H. P. Lüschen, M. H. Fischer, R. Vosk, E. Altman, U. Schneider, and I. Bloch, Observation of many-body localization of inter- acting fermions in a quasirandom optical lattice, Science 349, 842 (2015)
work page 2015
-
[37]
H. P. Lüschen, S. Scherg, T. Kohlert, M. Schreiber, P. Bordia, X. Li, S. Das Sarma, and I. Bloch, Single- particle mobility edge in a one-dimensional quasiperiodic optical lattice, Phys. Rev. Lett. 120, 160404 (2018)
work page 2018
- [38]
-
[39]
Modugno, Exponential localization in one- dimensional quasi-periodic optical lattices, New J
M. Modugno, Exponential localization in one- dimensional quasi-periodic optical lattices, New J. Phys. 11, 033023 (2009)
work page 2009
-
[40]
S. Ganguly and S. K. Maiti, Electrical analogue of one- dimensional and quasi-one-dimensional Aubry–André– Harper lattices, Sci. Rep. 13, 13633 (2023)
work page 2023
-
[41]
D. Halder and S. Basu, Controlled probing of localiza- tion effects in the non-Hermitian Aubry-André model via topolectrical circuits, Phys. Rev. B 111, 235447 (2025)
work page 2025
-
[42]
J. Stockhofe and P. Schmelcher, Bloch dynamics in lat- tices with long-range hopping, Phys. Rev. A 91, 023606 (2015)
work page 2015
-
[43]
Xiong, Bethe ansatz study of 1+1 dimensional Hub- bard model, Z
S.-J. Xiong, Bethe ansatz study of 1+1 dimensional Hub- bard model, Z. Phys. B 89, 29 (1992)
work page 1992
-
[44]
W. Wang and S.-j. Xiong, Possible first order phase tran- sition in the one-dimensional helical Hubbard model, Phys. Lett. A 156, 415 (1991)
work page 1991
-
[45]
T. Yildiz and B. Tanatar, Localization properties of a disordered helical chain, J. Low Temp. Phys. 222, 12 (2026)
work page 2026
-
[46]
Kohn, Theory of the insulating state, Physical review 133, A171 (1964)
W. Kohn, Theory of the insulating state, Physical review 133, A171 (1964)
work page 1964
-
[47]
D. Vanderbilt, Berry phases in electronic structure the- ory: electric polarization, orbital magnetization and topo- logical insulators (Cambridge University Press, 2018)
work page 2018
-
[48]
Resta, Manifestations of Berry’s phase in molecules and condensed matter, J
R. Resta, Manifestations of Berry’s phase in molecules and condensed matter, J. Phys. Condens. Matter 12, R107 (2000)
work page 2000
-
[49]
R. King-Smith and D. Vanderbilt, Theory of polarization of crystalline solids, Phys. Rev. B 47, 1651 (1993)
work page 1993
-
[50]
Resta, Macroscopic polarization in crystalline di- electrics: the geometric phase approach, Rev
R. Resta, Macroscopic polarization in crystalline di- electrics: the geometric phase approach, Rev. Mod. Phys. 66, 899 (1994)
work page 1994
-
[51]
Resta, Quantum-mechanical position operator in ex- tended systems, Phys
R. Resta, Quantum-mechanical position operator in ex- tended systems, Phys. Rev. Lett. 80, 1800 (1998)
work page 1998
-
[52]
R. Resta and S. Sorella, Electron localization in the in- sulating state, Phys. Rev. Lett. 82, 370 (1999)
work page 1999
-
[53]
N. A. Spaldin, A beginner’s guide to the modern theory of polarization, J. Solid State Chem. 195, 2 (2012)
work page 2012
-
[54]
Binder, Finite size scaling analysis of Ising model block distribution functions, Z
K. Binder, Finite size scaling analysis of Ising model block distribution functions, Z. Phys 43, 119 (1981)
work page 1981
-
[55]
Binder, Critical properties from Monte Carlo coarse graining and renormalization, Phys
K. Binder, Critical properties from Monte Carlo coarse graining and renormalization, Phys. Rev. Lett. 47, 693 (1981)
work page 1981
-
[56]
B. Hetényi, Scaling of the bulk polarization in extended and localized phases of a quasiperiodic model, Phys. Rev. B 110, 125124 (2024)
work page 2024
-
[57]
B. Hetényi and B. Dóra, Quantum phase transitions from analysis of the polarization amplitude, Phys. Rev. B 99, 085126 (2019)
work page 2019
-
[58]
B. Hetényi and S. Cengiz, Geometric cumulants asso- ciated with adiabatic cycles crossing degeneracy points: Application to finite size scaling of metal-insulator transi- tions in crystalline electronic systems, Phys. Rev. B 106, 195151 (2022)
work page 2022
-
[59]
B. Hetényi and I. Balogh, Numerical study of the localiza- tion transition of Aubry-André type models, Phys. Rev. B 112, 144203 (2025)
work page 2025
-
[60]
É. Zeckendorf, Representations des nombres naturels par une somme de nombres de fibonacci on de nombres de lucas, Bull. Soc. R. Sci. Liége , 179 (1972)
work page 1972
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.