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Hamiltonian Lattice Gauge Theories: Status, Novel Developments and Applications

→ Europe/Rome
Aula Renzo Leonardi (ECT*)

Aula Renzo Leonardi

ECT*

Strada delle Tabarelle 286, I-38123 Villazzano (Trento)
Carsten Urbach (University of Bonn), Simone Romiti (Uni-Bonn), Enrique Rico Ortega (University of the Basque Country UPV/EHU), Giuseppe Magnifico (University of Bari), Karl Jansen (DESY Zeuthen / CQTA), Randy Lewis (York University)
Description

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With the advent of quantum computers and the recent developments in tensor network methods, Hamiltonian Lattice Gauge Theories have gained renewed interest: The quest is to find efficient formulations of (non-)Abelian lattice gauge theories, which can be facilitated in current and future Hamiltonian simulations. The promise is the ability to investigate problems not accessible to stochastic simulation methods, such as systems at non-zero matter density, topological terms or realtime phenomena. The workshop aims to bring researchers working on these questions together and discuss the most recent algorithmic and methodological developments as well as results for various applications in the field.

Confirmed keynote speakers:

  • Christian Bauer
  • Stefan Kühn
  • Enrico Rinaldi
  • Martin Savage

 

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Participants
42 View full list
  • Monday 1 September
    • 1
      Welcome by the ECT* Director
      Speaker: Dionysios Triantafyllopoulos (ECT*, Italy)
      ECT-intro-2025.pdf
    • 2
      Overview by the Organisers
      Speakers: Carsten Urbach (University of Bonn), Enrique Ortega (University of the Basque Country UPV/EHU), Giuseppe Magnifico (University of Bari), Dr Simone Romiti (Uni-Bern)
      intro.pdf
    • 3
      Quantum Simluation of Fundamental Physics
      Speaker: Martin Savage (INT & University of Washington)
      Savage_ECTstar_September2025_v1p1_pdf.pdf
    • 11:00
      Coffee Break
    • 4
      Symmetry verification for noisy quantum simulations of non-Abelian lattice gauge theories
      Speaker: Edoardo Ballini (Università di Trento)
      20250109_ECTstar.pdf
    • 5
      Large N Truncation of SU(N) Lattice Gauge Theory
      Speaker: Anthony Ciavarella (Lawrence Berkeley National Lab)
      LargeN_ECT.pdf
      LargeN_ECT.pptx
    • 12:30
      Lunch Break
    • 6
      Composite particle spectroscopy in the Hamiltonian approach
      Speaker: Etsuko Itou (RIKEN)
      2025-09-ECT-EtsukoItou.pdf
    • 7
      Digitised Hamiltonian SU(2) Lattice Gauge Theories at Weak Couplings
      Speaker: Timo Jakobs
      presentation.pdf
    • 15:00
      Coffee Break
    • 8
      Strongly Coupled QCD on a Quantum Annealer
      Speaker: Thomas Luu (IAS-4, Forschungszentrum Jülich)
      Strong-Coupling QCD on a Quantum Annealer.pdf
    • 9
      Generalizing the loop-string-hadron formulation to SU(3) Yang-Mills theory
      Speaker: Dr Jesse Stryker (Lawrence Berkeley National Laboratory)
      stryker_ectstar_2025-09-01.pdf
    • 10
      Discussion
      Speakers: Carsten Urbach (University of Bonn), Enrique Ortega (University of the Basque Country UPV/EHU), Giuseppe Magnifico (University of Bari), Dr Simone Romiti (Uni-Bern)
  • Tuesday 2 September
    • 11
      Quantum Computing and Applications for Lattice Gauge Theories
      Speaker: Christian Bauer (LBNL)
      Trento2025.pdf
    • 12
      Matching Lagrangian and Hamiltonian Simulations in (2+1)-dimensional U(1) Gauge Theory
      Speaker: Christiane Franziska Groß (HISKP, Uni Bonn)
      Gross_matching_formulations_ECTstar.pdf
    • 10:30
      Coffee break
    • 13
      Universal Protocol for Quantum Simulation of Gauge Theories in Arbitrary Dimensions and Gauge Groups
      Speaker: Masanori Hanada (Queen Mary University of London)
      Hanada-2025-09-02-Trento.pdf
    • 14
      Simulating SU(2) Yang-Mills Theory with near-term VQE methods
      Speaker: Klaus Liegener (Walther-Meßner Institute / Technical University of Munich)
      2025_09_Liegener_final_pdf_export.pdf
    • 12:00
      Lunch
    • 16
      Quantum entanglement from local operators
      Speaker: Andrea Bulgarelli (University of Turin and INFN Turin)
      ectstar_Hamiltonian.pdf
    • 17
      Simplifying quantum simulations (of LGT)
      Speaker: Luca Dellantonio (Exeter University)
      Trento.pptx
    • 18
      Convergence and Efficiency of Quantum Imaginary Time Evolution
      Speaker: Tobias Hartung
      hartung.pdf
    • 16:00
      Coffee Break
    • 19
      Poster Session
      Speakers: Alessio Negro (University of Bonn, HISKP), Andrea Basilio Rava, Florian Meinecke (Universität Bonn, Institut für Numerische Simulation), Giovanni Pederiva, Jinglei Zhang (University of Waterloo), Martina Gisti (Università di Bonn), Thomas Luu (IAS-4, Forschungszentrum Jülich)
    • 20:00
      Social Dinner Restaurant Orso Grigio

      Please come to the place directly at 8pm:

      https://maps.app.goo.gl/5Vp7N3vkoBQFhaNQ6

  • Wednesday 3 September
    • 20
      Selected topics in tensor networks
      Speaker: Stefan Kühn (DESY, CQTA)
      TN_for_LGT-Stefan_Kuehn.pdf
    • 21
      String Breaking and Glueball Formation in 2+1D Lattice Gauge Theories
      Speaker: Jad Halimeh (Ludwig Maximilian University of Munich)
    • 10:45
      Coffee break
    • 22
      Critical behavior of the Schwinger model via gauge-invariant variational uniform matrix product states
      Speaker: Takuya Okuda (University of Tokyo)
      okuda.pdf
    • 23
      Nonperturbative signatures of fractons in the twisted multi-flavor Schwinger model
      Speaker: Pavel Popov (ICFO)
      Presentation_Pavel_Popov.pdf
    • 24
      Static Quark Potential in a SU(2) Quantum Link Model
      Speaker: Paul Ludwig (University of Bonn)
      presentation.pdf
    • 12:45
      Lunch break
    • 25
      Neural quantum states for SU(2) lattice gauge theory
      Speaker: Thomas Spriggs (TU Delft, QuTech)
      Spriggs_neural_wfs.pdf
    • 26
      Non-abelian (1+1)d gauge theories using infinite matrix product states
      Speaker: Benjamin Søgaard (Princeton)
      Sogaard.pdf
    • 15:00
      Coffee Break
    • 27
      Toward Efficient Trotter-Suzuki Schemes for Long-Time Quantum Dynamic
      Speaker: Marko Malezic (Helmholtz Institute for nuclear and radiation physics)
      Toward Efficient Trotter-Suzuki Schemes for Long-Time Quantum Dynamics - Trento.pdf
    • 28
      Discussion session
  • Thursday 4 September
    • 29
      The QCCD trapped-ion architecture and its benefits for Lattice Gauge Theories
      Speaker: Enrico Rinaldi (Quantinuum Ltd.)
      RinaldiE_QCCD-LGT_45min.pdf
    • 30
      Renormalized dual basis for scalable simulations of (2+1)D compact quantum electrodynamics
      Speaker: Marc Miranda-Riaza (Universitat Autònoma de Barcelona)
      Trento0904_MMR.pdf
      Trento0904_MMR.pptx
    • 10:30
      Coffee
    • 31
      How many states are gauge-invariant?
      Speakers: Alessandro Mariani (University of Bern), Alessandro Mariani
      Trento_presentation.pdf
    • 32
      Spontaneously Broken Non-Invertible Symmetries in Transverse-Field Ising Qudit Chains
      Speaker: Sergej Moroz (Karlstad University)
      Gqudits_Trento_2.pdf
    • 12:00
      Lunch break
    • 13:30
      Free afternoon: hiking, etc.
    • 20:00
      Social Dinner: PIzza
  • Friday 5 September
    • 33
      Summary and discussion of the organizers
      Speakers: Carsten Urbach (University of Bonn), Dr Simone Romiti (Uni-Bern), Enrique Ortega (University of the Basque Country UPV/EHU), Giuseppe Magnifico (University of Bari), Karl Jansen (DESY Zeuthen / CQTA), Randy Lewis (York University)
      all.pdf
      HLGT_workshop_2025.pdf
    • 10:00
      Coffee break
    • 34
      Concluding discussion
    • 12:00
      Lunch break and end of the workshop
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