I will present the progress and outlook on the strong interaction origin of hadron masses based on the CLQCD ensembles.
This report highlights the latest ATLAS physics results based on proton-proton collision data collected during LHC Run 2 and Run 3. High precision measurements of Higgs boson properties validate Standard Model predictions for production cross sections and couplings. Evidence is obtained for rare Higgs decays such as H->mumu and H->Zgamma, while constraints are set on Higgs CP-violating...
In this talk, I will present a study of static quark–antiquark interactions in rotating SU(3) gluodynamics using quenched lattice simulations at imaginary angular velocity.
Analytic strong-coupling calculations and previous rotating-lattice simulations appear to predict opposite responses of deconfinement to rotation. We investigate this tension in pure $SU(3)$ gauge theory on anisotropic lattices at imaginary angular velocity over $1.5\leq\beta\leq4.5$. At strong coupling we find a reentrant deconfined--confined--deconfined sequence near the zero-rotation...
This report investigates the infrared structure of QCD through the lens of the Cho–Faddeev–Niemi decomposition and Faddeev–Niemi effective theory. We argue that gluon knots, as topological solitons characterized by the Hopf invariant, constitute the relevant infrared ground-state degrees of freedom of Yang–Mills fields. Within this framework, we present a unified mechanism for monopole...
The singlet axial-vector and topological current operators play central roles in determining the quark and gluon spin contributions to the proton spin. As a consequence of the Adler–Bell–Jackiw anomaly, the axial-vector current $J_A^\mu$ acquires a non-trivial renormalization starting at two loops in perturbation theory, which is closely related to the renormalization of the topological...
我们提出一种新方案，通过研究不同维克收缩的图形，可以用以分辨强子的内部结构信息。我们对ρ介子中ππ到ππ的两类维克收缩图进行计算，可以清楚看到当四条夸克线都是从soure到sink的情况下，并不会出现ρ介子的能级贡献，这表明ρ中的两夸克成分是主要的。
Understanding the partonic structure of hadrons from first principles is a major goal of lattice QCD. In this talk, I will review recent progress by the Lattice Parton Collaboration using large-momentum effective theory (LaMET). I will first discuss lattice determinations of longitudinal parton structure, including parton distribution functions and light-cone distribution amplitudes of mesons...
We present a lattice QCD study of the $K^*(892)$ resonance using
eight $N_f=2+1$ Wilson-Clover ensembles with three lattice spacings
and six pion masses ranging from 135 to 320 MeV. For each ensemble,
a large number of finite volume energy levels in the $P$-wave $K\pi$
channel are determined. The energy dependence of the scattering
phase shift is then obtained from L\"uscher’s...
We present a preliminary lattice QCD study of baryon-baryon scattering using $N_f = 2+1$ CLQCD configurations. We focus primarily on the strangeness $S = -2$ $\Lambda\Lambda$ and $\Xi N$ systems to explore the properties of $H$-dibaryon near threshold using the Lüscher finite-volume quantization condition. Furthermore, we extend our study to baryon-baryon systems involving the $\Omega$ baryon....
The universality of the large momentum expansion allows computing parton distribution functions (PDFs) starting from any Euclidean correlator with appropriate large momentum Fourier
Components. Here we consider current-current correlators which have been used in short-distance
expansion to obtain moments of PDFs. The advantage of such correlators is that they have simple
renormalization...
We present an ongoing lattice QCD study of vector-meson light-cone distribution amplitude moments using gradient flow on the 2+1+1 flavor HISQ gauge ensembles generated by the MILC Collaboration. As a first step, we focus on the second moment of the φ-meson light-cone distribution amplitude, taking into account mixing among the relevant local operators. By comparing results at different flow...
We present a neural-network global analysis of transversity parton distributions and dihadron fragmentation functions using Belle, HERMES, COMPASS, and STAR measurements. The main new ingredient is an x-dependent lattice-QCD determination of isovector transversity, included directly at positive and negative x. It complements the limited experimental coverage and favors a larger positive...
The $J/\psi J/\psi$ energy spectra are extracted from lattice QCD by utilzing the Coordinate-Space Two-Hadron Operators, named as dumbbell method.
Finite-volume energies indicate an attractive interaction in total spin $S=0$ channel and a repulsive interaction in total spin $S=1$ channel and total spin $S=2$ channel.
The scattering lengths of three different total spin are also extracted...
Understanding how the spin, flavor, and intrinsic transverse motion of quarks emerge from QCD is essential for building a complete picture of nucleon structure. Recent developments in large-momentum effective theory have made it possible to access increasingly detailed partonic information directly from lattice QCD.
In this talk, I will present two complementary lattice studies of nucleon...
Baryon light-cone distribution amplitudes (LCDAs) encode the longitudinal momentum distributions of valence quarks and provide important nonperturbative inputs for hard exclusive processes involving baryons. In this talk, I will present the first lattice determination of the three leading-twist $\Lambda$-baryon LCDAs, $V$, $A$, and $T$, as full two-dimensional functions of the valence-quark...
We report a high precision calculation of the isospin vector charge $g_{S,T}$ of the nucleon using recently proposed "blending" method which provides a high-precision stochastic estimate of the all-to-all fermion propagator. A spin-$1/2$, isospin-$1/2$ projected current-involved basis element is utilized to reduce a particular nucleon-meson type excited state contamination whose coupling to...
At large isospin chemical potential $\mu_I$ and low temperature, QCD undergoes a second-order transition to a Bose-Einstein condensate of charged pions, whose order is encoded in the non-analytic $\mu_I$-dependence of the pressure and of the isospin density derived from it. Including dynamical photons is expected, on general grounds, to drive this transition first order. Since unequal quark...
Strong magnetic fields produced in relativistic heavy-ion collisions can modify conserved-charge fluctuations and their associated chemical potentials. The Ru and Zr isobars share the same mass number, $A=96$, but have different charge-to-baryon ratios, making Ru+Ru and Zr+Zr collisions a controlled setting for isolating isospin effects. In this talk, we will present first-principles,...
We propose a universality-based reconstruction of the QCD chiral crossover line from Lee--Yang edge singularities in the complex baryon chemical potential plane[1]. The framework maps lattice-extracted complex Lee--Yang-zero estimates, treated as proxies for edge singularities, to the universal chiral Lee--Yang edge and thereby determines the $\mu_B$ dependence of both the chiral critical line...
Understanding how external magnetic fields affect chiral and singlet $U(1)_A$ symmetry breaking is an important question in QCD under extreme conditions. In a pure magnetic background, the unequal electric charges of the light quarks explicitly reduce the non-singlet flavor symmetry, making it necessary to identify the appropriate neutral mesonic partner channels. We clarify the neutral-sector...
The chiral anomaly underlies many processes, including the two-photon decay of the neutral pion and the axion-photon coupling, and fixes their leading-order contributions to a constant independent of QCD dynamics. However, traditional lattice QCD methods compute the complete amplitude, making percent-level precision demanding. We show that, by applying the anomalous Ward identity (AWI), the...
We present the first lattice QCD calculation of the total gluon helicity contribution $\Delta G_H$ to the spin of $\Lambda$, $\Sigma$, and $\Xi$ hyperons.
The calculation employs the Coulomb-gauge fixed topological current $K^\mu$, whose forward matrix element in the infinite momentum frame yields $\Delta G_H$ without non-trivial perturbative matching.
Using a single $N_f=2+1$ flavor dynamical...
An infinite-heavy quark system can clearly be divided into two subsystems: one consisting of two infinitely heavy quarks and the other being the sea gluon and sea quark subsystem, allowing us to define the reduced density matrix and entanglement entropy. We calculate the reduced density matrix defined in color space under the Coulomb gauge condition on lattice dynamical configurations and find...
BESIII实验于2011至2024年间，采集了世界上最大的近阈粲介子对样本，这些量子关联产生的粲介子对为精确测量粲介子含轻衰变提供了独特平台。基于该数据样本，BESIII精确测定了粲介子纯轻衰变的衰变常数，粲介子半轻衰变到（赝）标量，（轴）矢量，张量介子的强相互作用形状因子，并抽取了CKM矩阵元$|V_{cs}|$以及$|V_{cd}|$。
格点量子色动力学是研究强相互作用非微扰性质的重要数值方法，也是超级计算机上的典型大规模科学计算应用。HISQ 等改进型费米子作用的 RHMC 组态生成过程需要反复执行Dirac 算子、Inverter和FermionForce计算等模块，对处理器的计算能力、内存带宽、节点内并行和节点间通信均提出了较高要求。与此同时，现代 CPU 平台在向量宽度、指令集、内存层次和编程接口方面日益多样化，使格点 QCD 软件既要实现面向特定平台的深度优化，也要保持跨架构可维护性。
本报告介绍格点 QCD 软件 QLOTUS 的开发背景、总体架构和阶段性进展。QLOTUS 面向多核 CPU 实现了 HISQ Smearing、Dslash、Inverter、Fermion Force 及完整 RHMC 演化流程，并采用 MPI、NUMA、OpenMP 与 SIMD...
本报告将介绍国产超算上格点QCD与SU(N) Yang-Mills理论模拟软件的最新进展。首先，介绍以DDQ调度器为核心的自主软件栈，涵盖从编程语言、编译器到上层格点软件的全自主实现，探讨其在国产异构超算平台上的可移植性、并行效率与生态构建。其次，介绍基于Kokkos的性能可移植SU(N)格点Yang-Mills模拟软件，其支持任意时空维度，适用于不同维度和规范群的大规模数值模拟。报告将包括上述软件在国产曙光DCU以及当前Top 500排名世界第一的“灵晟”超算上的运行结果与性能表现，展示国产超算平台上格点场论模拟的可行性与扩展能力。
I will review recent developments in algorithms and softwares for lattice gauge thoery, including AI/ML algorithms and agentic workflows.
过去数月间，人工智能与智能体深刻重塑了理论物理及相关理论学科的科研范式。本报告首先梳理人工智能在理论物理日常研究中的典型应用场景，涵盖基于对话交互开展的启发式物理探索。在此基础上，针对格点规范场论研究中的核心难点与现存瓶颈，介绍我们研发的全流程人工智能科研框架(IdeaMinerLQCD+LQCDMaster)，展示其在文献调研、科研思路挖掘、数学推导计算与结果核验等环节的赋能效果，实现关键科研流程的自动化与效能提升。报告将以重夸克弱衰变中的难题为例，具体探讨人工智能可能带来的机遇。最后，结合量子场论与人工智能的交叉融合趋势，总结研究启示并对未来发展方向进行一些展望。
Lattice QCD has made key breakthroughs in precision calculations for charmonium radiative decays and charm‑meson semileptonic decays in recent years. This talk will first review these developments. Apart from precision tests, searching for possible dark‑matter candidates with high‑precision experimental data constitutes another frontier of modern physics. We will introduce recent lattice...
The renormalization group beta function encodes how the strength of the strong interaction changes with energy scale, connecting asymptotic freedom at high energies to the onset of nonperturbative dynamics at low energies. We study the beta function of four-flavor QCD using the continuous gradient-flow approach, which provides a nonperturbative definition of the running coupling and its scale...
Lattice QCD provides a first-principles framework for studying the strong interactions and plays an important role in the precision determination of Standard Model parameters. This talk will review the determination of renormalized light and heavy quark masses, and discuss how lattice QCD calculations of hadronic decay matrix elements enable precise extractions of CKM matrix elements....
The field renormalization constant of flowed quark fields, denoted as $Z_\chi$, is a critical component in the non-perturbative renormalization of fermion operators within the gradient flow framework. While the conventional ``ringed'' scheme based on the fermion kinetic term provides a theoretically robust definition, its practical implementation on the lattice is hampered by significant...
Sampling algorithms for lattice field theories face persistent efficiency challenges near the continuum limit, including critical slowing down and, in certain fermionic theories, poor ergodicity across degenerate vacua. Generative diffusion models, recently shown to correspond to stochastic quantization, offer a promising alternative and have been demonstrated for scalar and pure gauge...
The quark gluon vertex is a fundamental quantity in unquenched QCD, where as the "classical" channel, i.e. the spinor structure of $\gamma_\mu$ is related to strong coupling constants $\alpha_s$. Higher order loop correlation would introduce other non-perturbative non-classical structures to the 3-pt correlation function of $\left<\psi\bar\psi A\right>$. In this work, we carried out...
Using $N_f = 2+1$ clover fermions across six gauge ensembles generated by the CLQCD collaboration, this work performs simultaneous chiral and continuum extrapolations to determine the electromagnetic properties of charmed mesons, providing the first lattice QCD calculations for the magnetic moments and radii of $D^{\ast+}$ and $D_s^\ast$, and filling the gap for the $D_s^*$ charge radius. The...
本工作在2+1味clover系综上用LQCD梯度流方法直接计算胶子迹反常对重子质量的贡献，并匹配到MSbar方案。结果显示，胶子迹反常贡献显著且非平庸。且直接计算得到的<g^2 g^2="" tr="">_H与求和规则自洽</g^2>
We present a first-principles lattice QCD calculation of $\Xi^{-} \to \Lambda $ form factors using $2+1$ flavor gauge ensembles with lattice spacings ranging from 0.06 to 0.1 fm and pion masses between 230 and 340 MeV. This decay provides an independent avenue for determining the Cabibbo--Kobayashi--Maskawa matrix element $|V_{us}|$ in the baryon sector. We determine the full set of vector and...
Using anisotropic clover action for valence bottom quark on CLQCD 2+1 flavor ensembles,we present the accurately prediction of ground state spin-1/2 and spin-3/2 baryon masses containing bottom quark,and extract sigma term contribution to bottom hadron masses using Feynman-Hellman method.
