arXiv - PHYS - High Energy Physics - Lattice最新文献_第10页

Multiscale Normalizing Flows for Gauge Theories 量子理论的多尺度归一化流动

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-16 DOI: arxiv-2404.10819

Ryan Abbott, Michael S. Albergo, Denis Boyda, Daniel C. Hackett, Gurtej Kanwar, Fernando Romero-López, Phiala E. Shanahan, Julian M. Urban

引用次数: 0

Schwinger-Dyson control variates for lattice fermions 晶格费米子的施文格-戴森控制变量

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-16 DOI: arxiv-2404.10707

Scott Lawrence

引用次数: 0

Boosting Determinant Quantum Monte Carlo with Submatrix Updates: Unveiling the Phase Diagram of the 3D Hubbard Model 利用子矩阵更新提升确定性量子蒙特卡洛：揭开三维哈伯德模型相图的面纱

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-15 DOI: arxiv-2404.09989

Fanjie Sun, Xiao Yan Xu

{"title":"Boosting Determinant Quantum Monte Carlo with Submatrix Updates: Unveiling the Phase Diagram of the 3D Hubbard Model","authors":"Fanjie Sun, Xiao Yan Xu","doi":"arxiv-2404.09989","DOIUrl":"https://doi.org/arxiv-2404.09989","url":null,"abstract":"The study of strongly correlated fermionic systems, crucial for understanding\u0000condensed matter physics, has been significantly advanced by numerical\u0000computational methods. Among these, the Determinant Quantum Monte Carlo (DQMC)\u0000method stands out for its ability to provide exact numerical solutions.\u0000However, the computational complexity of DQMC, particularly in dealing with\u0000large system sizes and the notorious sign problem, limits its applicability. We\u0000introduce an innovative approach to enhance DQMC efficiency through the\u0000implementation of submatrix updates. Building upon the foundational work of\u0000conventional fast updates and delay updates, our method leverages a generalized\u0000submatrix update algorithm to address challenges in simulating strongly\u0000correlated fermionic systems with both onsite and extended interactions at both\u0000finite and zero temperatures. We demonstrate the method's superiority by\u0000comparing it with previous update methods in terms of computational complexity\u0000and efficiency. Specifically, our submatrix update method significantly reduces\u0000the computational overhead, enabling the simulation of system sizes up to 8,000\u0000sites without pushing hard. This advancement allows for a more accurate\u0000determination of the finite temperature phase diagram of the 3D Hubbard model\u0000at half-filling. Our findings not only shed light on the phase transitions\u0000within these complex systems but also pave the way for more effective\u0000simulations of strongly correlated electrons, potentially guiding experimental\u0000efforts in cold atom simulations of the 3D Hubbard model.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140575637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating matrix power series with the Cayley-Hamilton theorem 用 Cayley-Hamilton 定理评估矩阵幂级数

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-11 DOI: arxiv-2404.07704

Tobias Rindlisbacher

引用次数: 0

Odd-Parity Nucleon Electromagnetic Transitions in Lattice QCD 格子 QCD 中的奇极性核子电磁跃迁

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-11 DOI: arxiv-2404.07625

Finn M. Stokes, Benjamin J. Owen, Waseem Kamleh, Derek B. Leinweber

{"title":"Odd-Parity Nucleon Electromagnetic Transitions in Lattice QCD","authors":"Finn M. Stokes, Benjamin J. Owen, Waseem Kamleh, Derek B. Leinweber","doi":"arxiv-2404.07625","DOIUrl":"https://doi.org/arxiv-2404.07625","url":null,"abstract":"The parity-expanded variational analysis (PEVA) technique enables the\u0000isolation of opposite-parity eigenstates at finite momentum. The approach has\u0000been used to perform the first lattice QCD calculations of excited-baryon form\u0000factors. In particular, these calculations show that the low-lying odd-parity\u0000nucleon excitations are described well by constituent quark models at moderate\u0000u and d quark masses approaching the strange quark mass. Herein, we extend the\u0000PEVA technique to establish a formalism for the determination of odd-parity\u0000nucleon electromagnetic transition form factors in lattice QCD. The formalism\u0000is implemented in the first calculation of the helicity amplitudes for\u0000transitions from the ground state nucleon to the first two odd-parity\u0000excitations. Through a comparison with constituent quark model calculations of\u0000these amplitudes, these new results give important insight into the structure\u0000of these excitations. This work is a critical step towards confronting\u0000experimental electroproduction amplitudes for the $N^*(1535)$ and $N^*(1650)$\u0000resonances with ab-initio lattice QCD calculations.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140575122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-dimensional ${mathbb Z}_2$-gauge $N$-vector models 三维 ${mathbb Z}_2$-量纲 $N$- 向量模型

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-10 DOI: arxiv-2404.07050

Claudio Bonati, Andrea Pelissetto, Ettore Vicari

{"title":"Three-dimensional ${mathbb Z}_2$-gauge $N$-vector models","authors":"Claudio Bonati, Andrea Pelissetto, Ettore Vicari","doi":"arxiv-2404.07050","DOIUrl":"https://doi.org/arxiv-2404.07050","url":null,"abstract":"We study the phase diagram and critical behaviors of three-dimensional\u0000lattice ${mathbb Z}_2$-gauge $N$-vector models, in which an $N$-component real\u0000field is minimally coupled with a ${mathbb Z}_2$-gauge link variables. These models are invariant under global O($N$)\u0000and local ${mathbb Z}_2$ transformations. They present three phases\u0000characterized by the spontaneous breaking of the global O($N$) symmetry and by\u0000the different topological properties of the ${mathbb Z}_2$-gauge correlations. We address the nature of the three transition lines\u0000separating the three phases. The theoretical predictions are supported by\u0000numerical finite-size scaling analyses of Monte Carlo data for the $N=2$ model.\u0000In this case, continuous transitions can be observed along both transition\u0000lines where the spins order, in the regime of small and large inverse gauge\u0000coupling $K$. Even though these continuous transitions belong to the same $XY$\u0000universality class, their critical modes turn out to be different. When the\u0000gauge variables are disordered (small $K$), the relevant order-parameter field\u0000is a gauge-invariant bilinear combination of the vector field. On the other\u0000hand, when the gauge variables are ordered (large $K$), the order-parameter\u0000field is the gauge-dependent $N$-vector field, whose critical behavior can only\u0000be probed by using a stochastic gauge fixing that reduces the gauge freedom.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140602886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-particle formalism for multiple channels: the $ηππ+ K overline K π$ system in isosymmetric QCD 多通道的三粒子形式主义：等对称 QCD 中的 $ηππ+ K overline K π$ 系统

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-03-29 DOI: arxiv-2403.20064

Zachary T. Draper, Stephen R. Sharpe

引用次数: 0

Lattice outlook on $Btoρellbarν$ and $Bto K^star ell ell$ 关于 $Btoρellbarν$ 和 $Bto K^star ell ell$ 的晶格展望

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-03-28 DOI: arxiv-2403.19543

Luka Leskovec, Stefan Meinel, Marcus Petschlies, John Negele, Srijit Paul, Andrew Pochinsky, Gumaro Rendon

引用次数: 0

Progress on $K_{rm L}rightarrowμ^+μ^-$ from Lattice QCD 格QCD的$K_{rm L}rightarrowμ^+μ^-$研究进展

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-03-27 DOI: arxiv-2403.18885

En-Hung Chao

引用次数: 0

Model-independent description of $Brightarrow D πell ν$ decays 与模型无关的 $Brightarrow D πell ν$ 衰变描述

arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-03-26 DOI: arxiv-2403.17501

Erik J. Gustafson, Florian Herren, Ruth S. Van de Water, Raynette van Tonder, Michael L. Wagman

引用次数: 0