hep-lat

D-branes and fractional instantons on a twisted four torus: the moduli space as an N=2 supersymmetric Higgs branch

The paper uses D-brane configurations to study the moduli space of fractional $SU(N)$ instantons on a twisted four-torus, demonstrating that this space is locally equivalent to the Higgs branch of an $\mathcal{N}=2$ supersymmetric theory with a manifest hyper-Kähler structure.

Inclusive semileptonic $D_s\to X_s\ell\bar\nu$ decays from lattice QCD: continuum and chiral extrapolation

This paper presents lattice QCD results for the inclusive semileptonic $D_s \to X_s \ell\bar\nu$ decay rate, providing a high-precision calculation with few-percent error that aligns with current experimental data through rigorous chiral and continuum extrapolations.

Hadronic contributions to $\alpha(Q^{2})$ and $\sin^{2}\theta_{W}(Q^{2})$ from spectral reconstruction of lattice-QCD data

This paper presents preliminary lattice-QCD results using $N_f = 2+1+1$ HISQ ensembles to calculate the hadronic contributions to the running of the electromagnetic coupling and the electroweak mixing angle through a proposed spectral-reconstruction strategy.

Quark Number Susceptibilities and Conserved Charge Fluctuations in $(2+1)$-flavor QCD with Möbius domain-wall fermions (MDWF)

This paper calculates second- and fourth-order conserved-charge fluctuations in $(2+1)$-flavor QCD using Möbius domain-wall fermions to study quark number susceptibilities across different quark masses and temperatures, comparing the results to hadron resonance gas models and Stefan–Boltzmann limits.

Ansätz Expressivity and Optimization in Variational Quantum Simulations of Transverse-field Ising Model Across System Sizes

This paper benchmarks the performance of various variational quantum ansätze in simulating the Transverse Field Ising Model across one, two, and three dimensions with up to 27 spins, evaluating their expressivity and optimization capabilities in capturing ground state properties like entanglement entropy and critical phenomena.

Reconstructing the full kinematic dependence of GPDs from pseudo-distributions

This paper presents the first direct extraction of double distributions from lattice QCD data to reconstruct the full $(x, \xi, t)$ dependence of unpolarized isovector proton GPDs using a Gaussian process regression framework, thereby enforcing Lorentz symmetry and assessing model dependence uncertainties.

Fully charm tetraquark production at hadronic collisions with gluon radiation effects

This paper presents the first complete next-to-leading order QCD calculation for fully charm tetraquark production at hadronic collisions, incorporating gluon radiation effects through resummation and utilizing LHCb and CMS data to extract universal long-distance matrix elements and predict kinematic distributions for the $X(6900)$ and its spin-zero partners.

The emergence of (3+1)-dimensional expanding spacetime from complex Langevin simulations of the Lorentzian type IIB matrix model with deformations

Heavy quark thermodynamics with anisotropic lattices

The FASTSUM collaboration utilizes anisotropic lattice QCD to investigate high-temperature spectral properties of heavy quarkonia and open heavy flavor systems, revealing a robust negative mass shift and increasing thermal width for quarkonia while presenting the first lattice results for B meson masses and spectral functions.

Probing QCD instantons using jet correlation observables in proton-proton collisions at the LHC

This paper proposes jet correlation observables to unambiguously distinguish instanton-induced processes from perturbative QCD events in proton-proton collisions at the LHC, utilizing constraints derived from 2+1 flavor QCD calculations to guide future searches at the Electron-Ion Collider.