Registration Room: Aula Renzo Leonardi

Welcome remarks Room: Aula Renzo Leonardi

The spectrum of open confining strings in the large- limit

• Alireza Sharifian

Room: Aula Renzo Leonardi

Intrinsic width of the flux tube in 2+1 dimensional Yang-Mills theories

• Lorenzo Verzichelli

Room: Aula Renzo Leonardi

Using space-time geometry as a tool

• Antonio Gonzalez-Arroyo

Room: Aula Renzo Leonardi

Non-perturbative physics of (1+1)d gauge theories using symmetric matrix product states

• Benjamin Sogaard

Room: Aula Renzo Leonardi We introduce a novel matrix product operator construction for Hamiltonian lattice gauge theories in $(1+1)$ dimensions. This framework enables the study of strongly coupled phenomena such as bound states, string tension, and vacuum structure. We demonstrate the effectiveness of our method by applying it to the massive Schwinger model and adjoint QCD$_2$

The simplicity of confinement

• Biagio Lucini

Room: Aula Renzo Leonardi Motivated by recent literature on the possible existence of a second higher-temperature phase transition in Quantum Chromodynamics (QCD), I revisit the proposal that colour confinement is related to the dynamics of magnetic monopoles using methods derived from Topological Data Analysis, which provide a mathematically rigorous characterisation of topological properties of quantities defined on a lattice. After introducing homology, I shall discuss how this concept can be used to quantitatively analyse the behaviour of monopoles across the deconfinement phase transition. The proposed approach is first demonstrated for Compact U(1) Lattice Gauge Theory, which is known to have a zero-temperature deconfinement phase transition driven by the restoration of the symmetry associated with the conservation of the magnetic charge. For this system, I perform a finite-size scaling analysis of observables capturing the homology of magnetic current loops, showing that the approach reproduces the expected value of the deconfinement critical coupling. Then, I extend this method to SU(3) gauge theory, in which Abelian magnetic monopoles are identified after projection in the Maximal Abelian Gauge. Specifically, I define an observable called "simplicity", which measures the number of topologically non-trivial loops per connected component in a current network. A finite-size scaling of the ensemble-averaged simplicity of Abelian magnetic currents provides the expected value of the critical coupling with an accuracy that is generally higher than that obtained with conventional thermodynamic approaches at comparable statistics, suggesting the relevance of the topological properties of monopole currents for confinement. Finally, preliminary results from a study of simplicity in QCD will be briefly discussed.

Casimir effect in critical O(N) models with non-equilibrium methods

• Andrea Bulgarelli

Room: Aula Renzo Leonardi

Three-dimensional U(1) strings beyond effective string theory

• Alessandro Mariani

Room: Aula Renzo Leonardi Effective string theory provides a successful description of the confining string in non-Abelian gauge theories. On the other hand, U(1) gauge theory in three spacetime dimensions, while confining, displays some peculiar properties (such as the impossibility of holding both the mass and string tension fixed in the continuum limit) which question the applicability of effective string theory to its confining string. In this talk, we report the results of numerical calculations of the ground state energy of the confining string in 3D U(1) gauge theory, and to what extent our results can be described by either effective string theory or alternatives, such as a recent proposal by Aharony, Barel and Sheaffer.

Aspects of Superconducting Strings

• Amey Gaikwad

Room: Aula Renzo Leonardi I will examine Abrikosov–Nielsen–Olesen (ANO) vortex strings in variants of Abelian Higgs models. In the large flux limit, the equations governing them simplify, and the resulting giant strings realize two sharply distinct phases. I will explore qualitative features of these strings and identify patterns in their physical properties. I'll also discuss the spectrum of small fluctuations and the associated low energy effective action. I will end by comparing these results to features of confining strings in Yang Mills theory.

Flux Tubes and Confinement in Lattice QCD

• Leonardo Cosmai

Room: Aula Renzo Leonardi

Training Neural Networks

• Luigi Del Debbio

Room: Aula Renzo Leonardi

D-branes in large N gauge theories

• Davide Gaiotto

Room: Aula Renzo Leonardi

Chiral anomaly and Ginsparg-Wilson Hamiltonians

• Hersch Singh

Room: Aula Renzo Leonardi

Stochastic Normalizing Flows for lattice gauge theory and defects

• Elia Cellini

Room: Aula Renzo Leonardi

Effective string theory on a torus: the 3d Ising interface

• José Matos

Room: Aula Renzo Leonardi

The LLR method in Lattice Gauge Theories

• Davide Vadacchino

Room: Aula Renzo Leonardi

The Nielsen-Ninomiya theorem versus bosonization

• Aleksey Cherman

Room: Aula Renzo Leonardi

Effective strings in QED_3

• Ofer Aharony

Room: Aula Renzo Leonardi

Spontaneously Broken Non-Invertible Symmetries in Transverse-Field Ising Qudit Chains

• Sergej Moroz

Room: Aula Renzo Leonardi

Peculiar phase transitions in three dimensional gauge systems

• Claudio Bonati

Room: Aula Renzo Leonardi

The Mass of the Baryon Junction: a lattice computation in dimensions

• Dario Panfalone

Room: Aula Renzo Leonardi

A new method for measuring high spin glueball states on the lattice

• Kieran Twaites

Room: Aula Renzo Leonardi

Lattice fermions and Floquet insulators

• Srimoyee Sen

Room: Aula Renzo Leonardi

Regulated chiral gauge theory and the strong CP problem

• David Kaplan

Room: Aula Renzo Leonardi Four-dimensional chiral gauge theory can be formulated as the boundary theory on a five-dimensional manifold in a manner that may be realized on a finite lattice. There are interesting features of these theories which defy a purely four-dimensional conception of universality. We find that QCD as embedded in a chiral gauge theory (the Standard Model) when regulated this way appears to suffer neither from a $U(1)_A$ problem nor a strong CP problem, with a central role played by fermion zeromodes localized far away in the fifth dimension. In this way it differs from conventional lattice QCD formulated as a stand-alone theory.

Classical vs. quantum simulations of lattice gauge theories

• Marina Marinkovic

Room: Aula Renzo Leonardi

Quantum Group symmetry, from the Lattice to the Continuum

• Bernardo Zan

Room: Aula Renzo Leonardi

Proving chiral symmetry breaking in QCD with ’t Hooft anomaly matching

• Ling-Xiao Xu (ICTP, Trieste)

Room: Aula Renzo Leonardi

Yang-Lee Criticality in Various Dimension

• Yuan Xin

Room: Aula Renzo Leonardi Yang-Lee criticality is the simplest non-Hermitian conformal field theory. The model was first reported as a phase transition of Ising model in imaginary longitudinal magnetic field more than half a centry ago. Since then, many qualitative and quantitative properties of YL criticality have been studied, remarkably, including the fact that the model can be described in Landau-Ginzburg scheme with a scalar $i\phi^3$ theory in $D<6$ and the fact that the 2D version is an exactly solvable minimal model. In higher dimensions, the model lacks the same level of understanding as the Ising criticality due to its non-Hermitian nature. We report a new study of 3D YL criticality as a phase transition of Fuzzy Sphere model, which facilitates a direct survey of many quantities such as the spectrum and OPE coefficient to high precision. These quantitative results show a beautiful agreement with conformal symmetry and previous estimates from $(6-\epsilon)$ expansion, high temperature expansion and conformal bootstrap. We also discuss possible approaches in dimensions higher than 3.

Center-vortex semiclassics on R2xT2 and large-N adiabatic continuity

• Yuya Tanizaki

Room: Aula Renzo Leonardi When the 4d $SU(N)$ Yang-Mills theory is put on $\mathbb{R}^2\times T^2$ with a nontrivial 't Hooft flux, qualitative features of confinement can be semiclassically described as the gas of center-vortex fractional instantons. We study the condition for the large-$N$ adiabatic continuity via a suitable choice of the $N$-dependent 't Hooft flux from the viewpoint of both $0$-form and $1$-form center symmetry.

Fracton topological phases and Foliated field theories

• Masazumi Honda

Room: Aula Renzo Leonardi

Emergent thermalisation in the Schwinger model

• Adrien Florio

Room: Aula Renzo Leonardi