PaperPanorama

HEP Lattice·hep-lat

Fri·Oct 16, 2026

5 papers—3 primary·2 cross-listed

All5Primary3Cross-lists2
  1. 01

    Ergodic topology sampling toward the continuum with Stochastic Normalizing Flows

    Claudio Bonanno🇨🇭 · Andrea Bulgarelli🇩🇪 · Elia Cellini🇬🇧 · Alessandro Nada🇮🇹 · Dario Panfalone🇮🇹 · Davide Vadacchino🇬🇧 · Lorenzo Verzichelli🇮🇹

    In this work we provide numerical evidence that topological freezing in Yang-Mills theory can be mitigated with a flow-based approach, as tested at lattice spacings as fine as 0.03~fm. We do so by analyzing the scaling of the costs of a computational strategy based on the combination of open boundary conditions and Stochastic Normalizing Flows. We show that the integrated autocorrelation time of the squared topological charge and the statistical uncertainty on the topological susceptibility remain under control throughout the explored parameter range with currently available computational resources. This marks an important step toward the use of even more efficient flow-based architectures for ergodic sampling of topology in state-of-the-art lattice gauge theory calculations.

    hep-latcond-mat.stat-mechcs.LGhep-ph0 citations
  2. 02

    Jianmu-Q: Bridging Quantum Field Theory and Quantum Hardware with AI Agents

    Xiaolin Wang · Xingyu Guo · Jinyang Li · Tianyin Li · Enke Wang · Lingxiao Wang · Hongxi Xing

    Quantum computing offers a promising approach to non-perturbative simulations of quantum field theories, particularly for real-time dynamics and systems affected by the sign problem. Yet translating continuum field theories into quantum computations remains a challenging interdisciplinary task. Here we introduce \texttt{Jianmu-Q}, a multi-agent framework that transforms natural-language descriptions of quantum field theories into quantum simulation workflows. Specialized agents handle theoretical formulation, lattice discretization, qubit mapping, and circuit design, while physical consistency checks and independent numerical calculations provide validation throughout the workflow. We benchmark the framework on three field theories of increasing complexity: the -dimensional Nambu--Jona-Lasinio and Schwinger models, and a -dimensional gauge theory. Across these systems, noiseless quantum-circuit simulations converge toward independent exact-diagonalization and tensor-network results, while selected circuits are executed on IBM quantum hardware, demonstrating an end-to-end, validation-guided approach to quantum simulation of field theories.

    hep-lathep-phquant-ph
  3. 03

    The hadronic-vacuum-polarization contribution to the muon anomalous magnetic moment in isospin-symmetric lattice QCD with twisted-mass fermions

    C. Alexandrou · S. Bacchio · A. De Santis · A. Evangelista · J. Finkenrath · R. Frezzotti · G. Gagliardi · M. Garofalo · N. Kalntis · B. Kostrzewa · V. Lubicz · L. Maio and 9 other authors

    We present a lattice-QCD calculation of the leading-order hadronic-vacuum-polarization (HVP) contribution to the anomalous magnetic moment of the muon in isospin-symmetric QCD. We employ the gauge configurations generated by the Extended Twisted Mass Collaboration (ETMC) with flavors of Wilson-clover twisted-mass quarks at four lattice spacings and at values of the quark-mass parameters matching the definition of isospin-symmetric QCD given in the FLAG review 2024 and in the 2025 edition of the Muon Theory Initiative White Paper (WP25). After retuning the simulation parameters to precisely match these two definitions of isospin-symmetric QCD, and after carrying out an extrapolation to the continuum limit based on the data at lattice spacings and ~fm, and spatial lattice sizes up to ~fm, we obtain and . Our results, which have a relative uncertainty of about , agree well with the corresponding determinations by other lattice groups. After adding to our determination of the leading isospin-breaking corrections provided in the WP25, namely , we obtain for the full HVP the value . This result translates into a Standard Model prediction for the muon anomalous magnetic moment that is fully consistent with the latest result by the Fermilab Muon experiment and strengthens the tension between lattice QCD and data-driven (pre-CMD3) dispersive determinations.

    hep-lathep-phhep-th
  4. 04

    The Blume-Capel Model as a Field Theory: A Monte Carlo and Flow Model Study

    Ejaaz Merali · Ryan Larson · Ehsan Khatami · Richard T. Scalettar

    We report Monte Carlo simulations of a continuous spin variant of the Blume-Capel model. We compute the phase diagrams in the crystal-field-temperature plane, as a function of the softness of the spins. We show that normalizing flows, a class of generative models capable of direct sampling without autocorrelation, are effective samplers across the phase diagram, including in the first-order transition region and in the vicinity of the tricritical point. Finite-size scaling analyses of flow samples locate the first- and second-order transitions as well as the tricritical point with accuracy comparable to canonical and extended-ensemble Monte Carlo.

    ↳ cond-mat.stat-mechcond-mat.dis-nncs.LGhep-lat0 citations
  5. 05

    Radiative transitions of hybrid mesons

    Shahriyar Jafarzade · Eric S. Swanson

    Radiative transitions of hybrid mesons probe nonperturbative gluodynamics, particularly the interplay between quark spin and gluonic excitations, and are of direct relevance to the search for exotic hadrons at Jefferson Lab. We calculate these transitions across the lowest charmonium-hybrid multiplet in a constituent gluon model based on Coulomb-gauge QCD in the heavy quark expansion. The results for and overlap the width obtained in quenched lattice computations, whereas is substantially below the corresponding lattice estimate.

    ↳ hep-phhep-exhep-latnucl-th

Affiliations

first authorsco-authorsvia INSPIRE