{
  "abstract": "Counterdiabatic (CD) driving suppresses the excitations of fast protocols by adding an auxiliary Hamiltonian, but in many-body and topological systems the exact CD term is generally non-local and multi-body. We study this obstruction for Thouless pumping in the Rice-Mele model, first without and then with interactions. For noninteracting fermions, the exact CD term of the pump is non-local, but the variational framework of Sels and Polkovnikov yields accurate nearest-neighbor approximations. For the spinful Rice-Mele chain with onsite and nearest-neighbor repulsion, in the regime where the competition of the two interactions stabilizes quantized pumping, this approach fails: the infinite-temperature variational action only penalizes the CD amplitudes, and the resulting two-parameter nearest-neighbor term does not prevent the pump from breaking down when the cycle time is reduced from $50/t$ to $2/t$. We trace the failure to the structure of the exact many-body gauge potential, whose amplitude for each hop depends on the interaction energy that the hop costs. Resolving the nearest-neighbor currents by this energy, and fixing the coefficients with a ground-state-weighted action, gives a local ansatz with 14 coefficients that keeps the interacting pump quantized for cycle times $T=2/t$ and $T=1/t$, with an accuracy per site that does not degrade between rings of 8 and 12 sites.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.26786",
  "author_total": 1,
  "authors": [
    {
      "name": "Alexander Chansky"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7g6bs5ppr3z3z.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.26786",
  "fulltext_url": null,
  "id": "7g6bs5ppr3z3z",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.26786",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7223069508",
  "pdf_url": "https://arxiv.org/pdf/2610.26786",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7g6bs5ppr3z3z.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.26786",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.26786"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Fast Hubbard-Thouless Pumping with Local Counterdiabatic Driving",
  "title_text": "Fast Hubbard-Thouless Pumping with Local Counterdiabatic Driving",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/7g6bs5ppr3z3z",
  "venue": "arXiv",
  "versions": []
}