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$mathrm{D}$ and $mathrm{D_s}$ decay constants in $N_{rm f}=2+1$ QCD with Wilson fermions 带有威尔逊费米子的 $N_{rm f}=2+1$ QCD 中的 $mathrm{D}$ 和 $mathrm{D_s}$ 衰变常数
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-05-07 DOI: arxiv-2405.04506
Simon Kuberski, Fabian Joswig, Sara Collins, Jochen Heitger, Wolfgang Söldner
{"title":"$mathrm{D}$ and $mathrm{D_s}$ decay constants in $N_{rm f}=2+1$ QCD with Wilson fermions","authors":"Simon Kuberski, Fabian Joswig, Sara Collins, Jochen Heitger, Wolfgang Söldner","doi":"arxiv-2405.04506","DOIUrl":"https://doi.org/arxiv-2405.04506","url":null,"abstract":"We present results for the leptonic decay constants of the D and D$_{rm s}$\u0000mesons from $N_{rm f}=2+1$ lattice QCD. We employ a set of 49 high statistics\u0000gauge ensembles generated by the Coordinated Lattice Simulations (CLS) effort\u0000utilising non-perturbatively improved Wilson fermions and the tree-level\u0000Symanzik improved gauge action at six values of the lattice spacing in the\u0000range $a = 0.098,$fm down to $a = 0.039,$fm, with pion masses varying from\u0000around $420,$MeV down to below the physical point. The ensembles lie on three\u0000trajectories in the quark mass plane, two trajectories intersecting close to\u0000the physical quark mass point and the third one approaching the SU(3) chiral\u0000limit, enabling tight control of the light and strange quark mass dependence.\u0000We obtain $f_{mathrm{D_s}}=246.8(1.3),$MeV, $f_mathrm{D}=208.4(1.5),$MeV\u0000and $f_{mathrm{D_s}}/f_mathrm{D}=1.1842(36)$, where the precision of our\u0000results is mostly limited by the determination of the scale.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140939426","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
Vector $K^{*}$ mesons in external magnetic field from SU(3) gluodynamics 从 SU(3) 胶动力学看外部磁场中的矢量 $K^{*}$ 介子
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-05-04 DOI: arxiv-2405.02600
E. V. Luschevskaya, O. V. Teryaev, E. A. Dorenskaya
{"title":"Vector $K^{*}$ mesons in external magnetic field from SU(3) gluodynamics","authors":"E. V. Luschevskaya, O. V. Teryaev, E. A. Dorenskaya","doi":"arxiv-2405.02600","DOIUrl":"https://doi.org/arxiv-2405.02600","url":null,"abstract":"We explore the ground state energies of the neutral and charged vector\u0000$K^{*}$ mesons in the external abelian magnetic field of QCD scale using\u0000overlap fermions. We calculate the magnetic dipole polarizability of the\u0000$K^{*0}$ and $bar{K}^{*0}$ mesons and investigate its dependence on the ratio\u0000of the strange quark mass to the light quark mass. It is found that the ground\u0000state energy and the magnetic dipole polarizability depends on the meson spin\u0000projection on the magnetic field axis. This leads to the appearance of\u0000dileptonic asymmetry, which can be characterized by the tensor polarizability\u0000value estimated for the $K^{*0}$ mesons. We found that the $g$-factor of the\u0000vector $K^{*pm}$ mesons depends on the $m_s/m_u$ value. Also we do not observe\u0000any evidence of the tachyonic mode existence for the strange vector mesons.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140885748","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
$bar{b}c$ susceptibilities from fully relativistic lattice QCD 来自完全相对论格子 QCD 的 $bar{b}c$ 易感性
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-05-02 DOI: arxiv-2405.01390
Judd Harrison
{"title":"$bar{b}c$ susceptibilities from fully relativistic lattice QCD","authors":"Judd Harrison","doi":"arxiv-2405.01390","DOIUrl":"https://doi.org/arxiv-2405.01390","url":null,"abstract":"We compute the $bar{h}c$ (pseudo)scalar, (axial-)vector and (axial-)tensor\u0000susceptibilities as a function of $u=m_c/m_h$ between $u=m_c/m_b$ and $u=0.8$\u0000using fully relativistic lattice QCD, employing nonperturbative current\u0000renormalisation and using the second generation 2+1+1 MILC HISQ gluon field\u0000configurations. We include ensembles with $aapprox 0.09mathrm{fm}$,\u0000$0.06mathrm{fm}$, $0.045mathrm{fm}$ and $0.033mathrm{fm}$ and we are able to\u0000reach the physical $b$-quark on the two finest ensembles. At the physical\u0000$m_h=m_b$ point we find $overline{m}_b^2 chi_{1^+}={0.720(34)times\u000010^{-2}}$, $overline{m}_b^2 chi_{1^-}={1.161(54)times 10^{-2}}$,\u0000$chi_{0^-}={2.374(33)times 10^{-2}}$, $chi_{0^+}={0.609(14)times 10^{-2}}$.\u0000Our results for the (pseudo)scalar, vector and axial-vector are compatible with\u0000the expected small size of nonperturbative effects at $u=m_c/m_b$. We also give\u0000the first nonperturbative determination of the tensor susceptibilities, finding\u0000$overline{m}_b^2 chi_{T}={0.891(44)times 10^{-2}}$ and $overline{m}_b^2\u0000chi_{AT}={0.441(33)times 10^{-2}}$. Our value of $overline{m}_b^2chi_{AT}$\u0000is in good agreement with the $mathcal{O}(alpha_s)$ perturbation theory,\u0000while our result for $overline{m}_b^2chi_{T}$ is in tension with the\u0000$mathcal{O}(alpha_s)$ perturbation theory at the level of $2sigma$. These\u0000results will allow for dispersively bounded parameterisations to be employed\u0000using lattice inputs for the full set of $hto c$ semileptonic form factors in\u0000future calculations, for heavy-quark masses in the range $1.25times m_c leq\u0000m_h leq m_b$.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140830561","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
Phase diagram of generalized XY model using tensor renormalization group 使用张量重正化群的广义 XY 模型相图
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-26 DOI: arxiv-2404.17504
Abhishek Samlodia, Vamika Longia, Raghav G. Jha, Anosh Joseph
{"title":"Phase diagram of generalized XY model using tensor renormalization group","authors":"Abhishek Samlodia, Vamika Longia, Raghav G. Jha, Anosh Joseph","doi":"arxiv-2404.17504","DOIUrl":"https://doi.org/arxiv-2404.17504","url":null,"abstract":"We use the higher-order tensor renormalization group method to study the\u0000two-dimensional generalized XY model that admits integer and half-integer\u0000vortices. This model is the deformation of the classical XY model and has a\u0000rich phase structure consisting of nematic, ferromagnetic, and disordered\u0000phases and three transition lines belonging to the\u0000Berezinskii-Kosterlitz-Thouless and Ising class. We explore the model for a\u0000wide range of temperatures, $T$, and the deformation parameter, $Delta$, and\u0000compute specific heat along with integer and half-integer magnetic\u0000susceptibility, finding both BKT-like and Ising-like transitions and the region\u0000where they meet.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140813062","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
Spectroscopy by Tensor Renormalization Group Method 张量重正化群法光谱学
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-24 DOI: arxiv-2404.15666
Fathiyya Izzatun Az-zahra, Shinji Takeda, Takeshi Yamazaki
{"title":"Spectroscopy by Tensor Renormalization Group Method","authors":"Fathiyya Izzatun Az-zahra, Shinji Takeda, Takeshi Yamazaki","doi":"arxiv-2404.15666","DOIUrl":"https://doi.org/arxiv-2404.15666","url":null,"abstract":"We present a spectroscopy scheme for the lattice field theory by using tensor\u0000renormalization group method combining with the transfer matrix formalism. By\u0000using the scheme, we can not only compute the energy spectrum for the lattice\u0000theory but also determine quantum numbers of the energy eigenstates.\u0000Furthermore, wave function of the corresponding eigenstate can also be\u0000computed. The first step of the scheme is to coarse-grain the tensor network of\u0000a given lattice model by using the higher order tensor renormalization group,\u0000and then after making a matrix corresponding to a transfer matrix from the\u0000coarse-grained tensors, its eigenvalues are evaluated to extract the energy\u0000spectrum. Secondly, the quantum number of the eigenstates can be identified by\u0000a selection rule that requires to compute matrix elements of an associated\u0000insertion operator. The matrix elements can be represented by an impurity\u0000tensor network and computed by the coarse-graining scheme. Moreover, we can\u0000compute the wave function of the energy eigenstate by putting the impurity\u0000tensor at each point in space direction of the network. Additionally, the\u0000momentum of the eigenstate can also be identified by computing an appropriate\u0000matrix elements represented by tensor network. As a demonstration of the new\u0000scheme, we show the spectroscopy of $(1+1)$d Ising model and compare it with\u0000exact results. We also present a scattering phase shift obtained from\u0000two-particle state energy using L\"uscher's formula.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"119 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140799234","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
Full QCD with milder topological freezing 具有较温和拓扑冻结的完全 QCD
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-22 DOI: arxiv-2404.14151
Claudio Bonanno, Giuseppe Clemente, Massimo D'Elia, Lorenzo Maio, Luca Parente
{"title":"Full QCD with milder topological freezing","authors":"Claudio Bonanno, Giuseppe Clemente, Massimo D'Elia, Lorenzo Maio, Luca Parente","doi":"arxiv-2404.14151","DOIUrl":"https://doi.org/arxiv-2404.14151","url":null,"abstract":"We simulate $N_f=2+1$ QCD at the physical point combining open and periodic\u0000boundary conditions in a parallel tempering framework, following the original\u0000proposal by M. Hasenbusch for $2d$ $mathrm{CP}^{N-1}$ models, which has been\u0000recently implemented and widely employed in $4d$ $mathrm{SU}(N)$ pure\u0000Yang-Mills theories too. We show that using this algorithm it is possible to\u0000achieve an impressive reduction of the auto-correlation time of the topological\u0000charge in dynamical fermions simulations both at zero and finite temperature up\u0000to two orders of magnitude, allowing to avoid topology freezing down to lattice\u0000spacings as fine as $a sim 0.02$ fm. Therefore, this implementation of the\u0000Parallel Tempering on Boundary Conditions algorithm has the potential to\u0000substantially push forward the investigation of the QCD vacuum properties by\u0000means of lattice simulations.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"264 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140802573","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
Neutron electric dipole moment from isovector quark chromo-electric dipole moment 从等向夸克色电偶极矩得出的中子电偶极矩
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-21 DOI: arxiv-2404.13516
Tanmoy BhattacharyaLos Alamos National Laboratory, Vincenzo CiriglianoUniversity of Washington, Rajan GuptaLos Alamos National Laboratory, Emanuele MereghettiLos Alamos National Laboratory, Jun-Sik YooLos Alamos National Laboratory, Boram YoonNVIDIA Corporation
{"title":"Neutron electric dipole moment from isovector quark chromo-electric dipole moment","authors":"Tanmoy BhattacharyaLos Alamos National Laboratory, Vincenzo CiriglianoUniversity of Washington, Rajan GuptaLos Alamos National Laboratory, Emanuele MereghettiLos Alamos National Laboratory, Jun-Sik YooLos Alamos National Laboratory, Boram YoonNVIDIA Corporation","doi":"arxiv-2404.13516","DOIUrl":"https://doi.org/arxiv-2404.13516","url":null,"abstract":"We present results from our lattice QCD study of the contribution of the\u0000isovector quark cEDM (qcEDM) operator to the neutron EDM. The calculation was\u0000carried out on four 2+1+1-flavor highly improved staggered quark ensembles\u0000(provided to us by the MILC collaboration) using Wilson-clover quarks to\u0000construct correlation functions. We use the nonsinglet axial Ward identity\u0000including corrections up to O(a) to show how to control the power-divergent\u0000mixing of the isovector qcEDM operator with the lower dimensional pseudoscalar\u0000operator. Results for the nEDM are presented after conversion to the MS scheme\u0000at the leading-log order.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140802734","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
Pion mass dependence in $Dπ$ scattering and the $D_0^*(2300)$ resonance from lattice QCD 从格子QCD看Dπ$散射中的离子质量依赖性和D_0^*(2300)$共振
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-20 DOI: arxiv-2404.13479
Haobo Yan, Chuan Liu, Liuming Liu, Yu Meng, Hanyang Xing
{"title":"Pion mass dependence in $Dπ$ scattering and the $D_0^*(2300)$ resonance from lattice QCD","authors":"Haobo Yan, Chuan Liu, Liuming Liu, Yu Meng, Hanyang Xing","doi":"arxiv-2404.13479","DOIUrl":"https://doi.org/arxiv-2404.13479","url":null,"abstract":"Lattice QCD results for isospin $I=frac{1}{2}$ $Dpi$ scattering are\u0000presented. Utilizing a series of $N_{text{f}}=2+1$ Wilson-Clover ensembles\u0000with pion masses of $m_pi approx 132, 208, 305$ and $317$ MeV, various\u0000two-particle operators are constructed and the corresponding finite-volume\u0000spectra are determined. The $S$ and $P$-wave scattering phase shifts are then\u0000extracted using the L\"{u}scher approach. A clear trend for the motion of the\u0000$D_0^*(2300)$ pole is identified. With the physical pion mass configurations\u0000also included, this calculation constitutes the first lattice calculation in\u0000which the pion mass dependence of the $D_0^*(2300)$ pole is investigated and\u0000the scattering lengths are extrapolated/interpolated to the physical pion mass\u0000in $Dpi$ scattering.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"272 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140802823","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
Investigation of the ensemble of maximal center gauge 对最大中心规程集合的研究
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-20 DOI: arxiv-2404.13304
Zeinab Dehghan, Rudolf Golubich, Roman Höllwieser, Manfried Faber
{"title":"Investigation of the ensemble of maximal center gauge","authors":"Zeinab Dehghan, Rudolf Golubich, Roman Höllwieser, Manfried Faber","doi":"arxiv-2404.13304","DOIUrl":"https://doi.org/arxiv-2404.13304","url":null,"abstract":"Maximal Center Gauge (MCG) aims to detect center vortices by maximizing a\u0000gauge functional and then projecting onto the center elements of the respective\u0000group. The requirement for unrestricted maximization of the gauge functional\u0000has proven to be untenable because it was shown that it leads to an\u0000underestimation of the string tension. To counter this problem, the ensemble of\u0000local gauge maxima is investigated and it is found that the unrestricted\u0000maximization can be replaced by a maximization restricted to the Gaussian\u0000distributed part of the ensemble. Such restricted maximization weakens the\u0000problem of an underestimated string tension.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140802495","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
Practical applications of machine-learned flows on gauge fields 机器学习流在规整场上的实际应用
arXiv - PHYS - High Energy Physics - Lattice Pub Date : 2024-04-17 DOI: arxiv-2404.11674
Ryan Abbott, Michael S. Albergo, Denis Boyda, Daniel C. Hackett, Gurtej Kanwar, Fernando Romero-López, Phiala E. Shanahan, Julian M. Urban
{"title":"Practical applications of machine-learned flows on gauge fields","authors":"Ryan Abbott, Michael S. Albergo, Denis Boyda, Daniel C. Hackett, Gurtej Kanwar, Fernando Romero-López, Phiala E. Shanahan, Julian M. Urban","doi":"arxiv-2404.11674","DOIUrl":"https://doi.org/arxiv-2404.11674","url":null,"abstract":"Normalizing flows are machine-learned maps between different lattice theories\u0000which can be used as components in exact sampling and inference schemes.\u0000Ongoing work yields increasingly expressive flows on gauge fields, but it\u0000remains an open question how flows can improve lattice QCD at state-of-the-art\u0000scales. We discuss and demonstrate two applications of flows in replica\u0000exchange (parallel tempering) sampling, aimed at improving topological mixing,\u0000which are viable with iterative improvements upon presently available flows.","PeriodicalId":501191,"journal":{"name":"arXiv - PHYS - High Energy Physics - Lattice","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140625379","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
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