---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '20503'
abstract:
- lang: eng
  text: We introduce a class of interacting fermionic quantum models in d dimensions
    with nodal interactions that exhibit superdiffusive transport. We establish nonperturbatively
    that the nodal structure of the interactions gives rise to long-lived quasiparticle
    excitations that result in a diverging diffusion constant, even though the system
    is fully chaotic. Using a Boltzmann equation approach, we find that the charge
    mode acquires an anomalous dispersion relation at long wavelength ωðqÞ ∼ qz with
    dynamical exponent z ¼ min½ð2n þ dÞ=2n; 2, where n is the order of the nodal point
    in momentum space. We verify our predictions in one-dimensional systems using
    tensor-network techniques.
acknowledgement: "Y.-P. W. thanks Chen Fang, Marko Žnidarič, Enej Ilievski, and Curt
  von Keyserlingk for useful\r\ndiscussion. Y.-P. W. is supported by Chinese Academy
  of Sciences under Grant No. XDB33020000, National Natural Science Foundation of
  China (NSFC) under Grants No. 12325404 and No. 12188101 and National Key R&D Program
  of China under Grants\r\nNo. 2022YFA1403800 and No. 2023YFA1406704. S. G. acknowledges
  support from NSF No. QuSEC-TAQS OSI 2326767. J. R. acknowledges support by the Leverhulme
  Trust Research Leadership Award No. RL-2019-015. R. V. acknowledges partial support
  from the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under
  Award No. DE-SC0023999."
article_number: '166303'
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Yupeng
  full_name: Wang, Yupeng
  id: 6a394bd3-0984-11f0-8835-a92b812ec257
  last_name: Wang
- first_name: Jie
  full_name: Ren, Jie
  last_name: Ren
- first_name: Sarang
  full_name: Gopalakrishnan, Sarang
  last_name: Gopalakrishnan
- first_name: Romain
  full_name: Vasseur, Romain
  last_name: Vasseur
citation:
  ama: Wang Y, Ren J, Gopalakrishnan S, Vasseur R. Superdiffusive transport in chaotic
    quantum systems with nodal interactions. <i>Physical Review Letters</i>. 2025;135(16).
    doi:<a href="https://doi.org/10.1103/xx9z-4j6c">10.1103/xx9z-4j6c</a>
  apa: Wang, Y., Ren, J., Gopalakrishnan, S., &#38; Vasseur, R. (2025). Superdiffusive
    transport in chaotic quantum systems with nodal interactions. <i>Physical Review
    Letters</i>. American Physical Society. <a href="https://doi.org/10.1103/xx9z-4j6c">https://doi.org/10.1103/xx9z-4j6c</a>
  chicago: Wang, Yupeng, Jie Ren, Sarang Gopalakrishnan, and Romain Vasseur. “Superdiffusive
    Transport in Chaotic Quantum Systems with Nodal Interactions.” <i>Physical Review
    Letters</i>. American Physical Society, 2025. <a href="https://doi.org/10.1103/xx9z-4j6c">https://doi.org/10.1103/xx9z-4j6c</a>.
  ieee: Y. Wang, J. Ren, S. Gopalakrishnan, and R. Vasseur, “Superdiffusive transport
    in chaotic quantum systems with nodal interactions,” <i>Physical Review Letters</i>,
    vol. 135, no. 16. American Physical Society, 2025.
  ista: Wang Y, Ren J, Gopalakrishnan S, Vasseur R. 2025. Superdiffusive transport
    in chaotic quantum systems with nodal interactions. Physical Review Letters. 135(16),
    166303.
  mla: Wang, Yupeng, et al. “Superdiffusive Transport in Chaotic Quantum Systems with
    Nodal Interactions.” <i>Physical Review Letters</i>, vol. 135, no. 16, 166303,
    American Physical Society, 2025, doi:<a href="https://doi.org/10.1103/xx9z-4j6c">10.1103/xx9z-4j6c</a>.
  short: Y. Wang, J. Ren, S. Gopalakrishnan, R. Vasseur, Physical Review Letters 135
    (2025).
corr_author: '1'
date_created: 2025-10-20T11:07:35Z
date_published: 2025-10-15T00:00:00Z
date_updated: 2025-10-21T07:47:07Z
day: '15'
ddc:
- '530'
department:
- _id: MaSe
doi: 10.1103/xx9z-4j6c
external_id:
  arxiv:
  - '2501.08381'
file:
- access_level: open_access
  checksum: 928c2991aef252fe81d476b61806743f
  content_type: application/pdf
  creator: dernst
  date_created: 2025-10-21T07:44:24Z
  date_updated: 2025-10-21T07:44:24Z
  file_id: '20512'
  file_name: 2025_PhysReviewLetters_Wang.pdf
  file_size: 388263
  relation: main_file
  success: 1
file_date_updated: 2025-10-21T07:44:24Z
has_accepted_license: '1'
intvolume: '       135'
issue: '16'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Physical Review Letters
publication_identifier:
  eissn:
  - 1079-7114
  issn:
  - 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Superdiffusive transport in chaotic quantum systems with nodal interactions
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 135
year: '2025'
...