Precision Many-Body Physics I: Correlated States: Concepts, Phases, and Methods

Presentations

• Breakdown of the Migdal-Eliashberg theory: role of polarons/bipolarons [(Precision Many-Body Physics Focus Sessions)

  Invited-In-person · Invited

  March 18, 2026, 12:00 PM – March 18, 2026, 12:36 PM

  Presenters

  • Andrey Chubukov

    • University of Minnesota

  Authors

  • Andrey Chubukov

    • University of Minnesota

  View abstract →

• Novel phases in long-range interacting quantum many-body systems

  Oral-In-person

  March 18, 2026, 12:36 PM – March 18, 2026, 12:48 PM

  Publication: [1] T. Gupta, G. Masella, F. Mattiotti, N. V. Prokof'ev, G. Pupillo, Scale‑invariant phase transition of disordered bosons in one dimension, Physical Review B 111, L020503 (2025).
  [2] T. Gupta, N. V. Prokof'ev, G. Pupillo, Bose‑Hubbard model with power‑law hopping in one dimension, arXiv:2412.01571 (2024).

  Presenters

  • Tanul Gupta

    • University of Strasbourg

  Authors

  • Tanul Gupta

    • University of Strasbourg

  • Guido Pupillo

    • University of Strasbourg

  • Guido Masella

    • University of Strasbourg

  • Francesco Mattiotti

    • University of Strasbourg

  • Nikolay Prokofiev

  View abstract →

• Edge Superfluidity of ⁴He Droplet and Half Layer on Graphite

  Oral-In-person

  March 18, 2026, 12:48 PM – March 18, 2026, 1:00 PM

  Presenters

  • Thomas Petuaud-Letang

    • University of Massachussets Amherst

  Authors

  • Thomas Petuaud-Letang

    • University of Massachussets Amherst

  • Boris Svistunov

    • University of Massachusetts Amherst

  • Nikolay Prokof'ev

    • University of Massachusetts Amherst

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• Extracting Scaling Dimensions via Operator Covariance in an S = 1/2 Quantum Spin Chain

  Oral-In-person

  March 18, 2026, 1:00 PM – March 18, 2026, 1:12 PM

  Presenters

  • Zhi Lin

    • Boston University

  Authors

  • Zhi Lin

    • Boston University

  • Gabe Schumm

    • Boston University

  • Anders Sandvik

    • Boston University

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• Particle number fluctuations in one dimensional quantum liquids

  Oral-In-person

  March 18, 2026, 1:12 PM – March 18, 2026, 1:24 PM

  Presenters

  • Sutirtha Paul

    • University of Tennessee

  Authors

  • Sutirtha Paul

    • University of Tennessee

  • Rahul Soni

    • University of Tennessee Knoxville

  • Paul Sokol

    • Indiana University Bloomington

  • Adrian Del Maestro

    • University of Tennessee

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• Characterization of Exciton-exciton entanglement in different phases: A many-body investigation in low dimensions

  Oral-In-person

  March 18, 2026, 1:24 PM – March 18, 2026, 1:36 PM

  Presenters

  • Fangzhou Zhao

    • Max Planck Institute for the Structure and Dynamics of Matte

  Authors

  • Fangzhou Zhao

    • Max Planck Institute for the Structure and Dynamics of Matte

  • Carlos Mejuto Zaera

    • University of California, Berkeley

  • Vojtech Vlcek

    • University of California, Santa Barbara

  • Angel Rubio

    • Max Planck Institute for the Structure & Dynamics of Matter

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• Complexity of real-time Gaussian environments: is there really a $T_{\max}$-dependence?

  Oral-In-person

  March 18, 2026, 1:36 PM – March 18, 2026, 1:48 PM

  Presenters

  • Zhen Huang

    • University of California, Berkeley

  Authors

  • Zhen Huang

    • University of California, Berkeley

  • Zhiyan Ding

  • Jason Kaye

    • Simons Foundation (Flatiron Institute)

  • Ke Wang

  • Xiantao Li

    • Pennsylvania State University

  • Lin Lin

    • University of California, Berkeley

  View abstract →

• Twisted quantum doubles are sign problem-free

  Oral-In-person

  March 18, 2026, 1:48 PM – March 18, 2026, 2:00 PM

  Publication: arXiv:2509.03708

  Presenters

  • Leyna Shackleton

    • Massachusetts Institute of Technology

  Authors

  • Leyna Shackleton

    • Massachusetts Institute of Technology

  View abstract →

• How to stay on the physical branch in self-consistent many-electron approaches

  Oral-In-person

  March 18, 2026, 2:00 PM – March 18, 2026, 2:12 PM

  Publication: How to stay on the physical branch in self-consistent many-electron approaches
  Herbert Eßl, Matthias Reitner, Evgeny Kozik, Alessandro Toschi
  arXiv:2502.01420

  Presenters

  • Herbert Essl

    • Technical University of Vienna

  Authors

  • Herbert Essl

    • Technical University of Vienna

  • Matthias Reitner

  • Evgeny Kozik

    • King's College London

  • Alessandro Toschi

  View abstract →

• Computation of generalized zeta functions with applications to long-range interacting classical and quantum lattices

  Oral-In-person

  March 18, 2026, 2:12 PM – March 18, 2026, 2:24 PM

  Publication: Planned:
  
  Computation of high-order derivatives of generalized Epstein zeta functions.
  Work on the application of EpsteinLib to many-body quantum systems.
  
  Published:
  JB, Robles-Navarro et al. (2025): Exact lattice summations for Lennard-Jones potentials coupled to a three-body Axilrod–Teller–Muto term applied to cuboidal phase transitions. DOI: https://doi.org/10.1063/5.0276677
  
  Preprints:
  JB, Buchheit et al. (2025): Zeta expansion for long-range interactions under periodic boundary conditions with applications to micromagnetics. DOI: https://doi.org/10.48550/arXiv.2509.26274
  JB, Buchheit et al. (2025): Epstein zeta method for many-body lattice sums. DOI: https://doi.org/10.48550/arXiv.2504.11989
  JB, Buchheit et al. (2024): Computation and properties of the Epstein zeta function with high-performance implementation in EpsteinLib. DOI: https://doi.org/10.48550/arXiv.2412.16317

  Presenters

  • Jonathan Busse

    • German Aerospace Center (DLR)

  Authors

  • Jonathan Busse

    • German Aerospace Center (DLR)

  • Andreas Buchheit

    • University des Saarlandes

  • Gary Schmiedinghoff

  • Benedikt Fauseweh

  • Torsten Kessler

  • Filipp Rybakov

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• Néel to Valence Bond Solid Transition in the SU(N) X-Q Model

  Oral-In-person

  March 18, 2026, 2:24 PM – March 18, 2026, 2:36 PM

  Presenters

  • Ryan Flynn

    • Boston University

  Authors

  • Ryan Flynn

    • Boston University

  • Anders Sandvik

    • Boston University

  View abstract →