Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019)最新文献

Tailoring Non-Abelian Gauge Theory for Digital Quantum Simulation 数字量子模拟的裁剪非阿贝尔规范理论

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-05-27 DOI: 10.22323/1.363.0144

Jesse R. Stryker, Indrakshi Raychowdhury

引用次数: 0

Composite electroweak sectors on the lattice 晶格上的复合电弱扇区

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-05-03 DOI: 10.22323/1.363.0242

V. Drach

引用次数: 12

Lattice $B to D^{(*)}$ form factors, $R(D^{(*)})$, and $|V_{cb}|$ 晶格^ $ B D{(*)}形式因素,美元$ R (D ^{(*)})$, 和$ | V_ {cb} | $

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-04-02 DOI: 10.22323/1.363.0228

A. Lytle

引用次数: 2

First study of $N_f=2+1+1$ lattice QCD with physical domain-wall quarks 具有物理畴壁夸克的$N_f=2+1+1$晶格QCD的首次研究

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-02-14 DOI: 10.22323/1.363.0133

T. Chiu

引用次数: 2

Leptonic decays of $B_{(s)}$ and $D_{(s)}$ using the OK action 使用OK动作的$B_{(s)}$和$D_{(s)}$的轻子衰减

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-02-12 DOI: 10.22323/1.363.0050

Tanmoy Bhattacharya, Benjamin J. Choi, Rajan Gupta, Yong-Chull Jang, Seungyeob Jwa, Sunkyu Lee, Weonjong Lee, J. Leem, Sungwoo Park

引用次数: 3

Nucleon charges and form factors using clover and HISQ ensembles 核子电荷和形状因子使用三叶草和HISQ集成

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-02-06 DOI: 10.22323/1.363.0136

Sungwoo Park, Tanmoy Bhattacharya, Rajan Gupta, Yong-Chull Jang, B. Joó, Huey-Wen Lin, B. Yoon

{"title":"Nucleon charges and form factors using clover and HISQ ensembles","authors":"Sungwoo Park, Tanmoy Bhattacharya, Rajan Gupta, Yong-Chull Jang, B. Joó, Huey-Wen Lin, B. Yoon","doi":"10.22323/1.363.0136","DOIUrl":"https://doi.org/10.22323/1.363.0136","url":null,"abstract":"We present high statistics ($mathcal{O}(2times 10^5)$ measurements) preliminary results on (i) the isovector charges, $g^{u-d}_{A,S,T}$, and form factors, $G^{u-d}_E(Q^2)$, $G^{u-d}_M(Q^2)$, $G^{u-d}_A(Q^2)$, $widetilde G^{u-d}_P(Q^2)$, $G^{u-d}_P(Q^2)$, on six 2+1-flavor Wilson-clover ensembles generated by the JLab/W&M/LANL/MIT collaboration with lattice parameters given in Table 1. Examples of the impact of using different estimates of the excited state spectra are given for the clover-on-clover data, and as discussed in [1], the biggest difference on including the lower energy (close to $Npi$ and $Npipi$) states is in the axial channel. (ii) Flavor diagonal axial, tensor and scalar charges, $g^{u,d,s}_{A,S,T}$, are calculated with the clover-on-HISQ formulation using nine 2+1+1-flavor HISQ ensembles generated by the MILC collaboration [2] with lattice parameters given in Table 2. Once finished, the calculations of $g^{u,d,s}_{A,T}$ will update the results given in Refs.[3,4]. The estimates for $g^{u,d,s}_{S}$ and $sigma_{Npi}$ are new. Overall, a large part of the focus is on understanding the excited state contamination (ESC), and the results discussed provide a partial status report on developing defensible analyses strategies that include contributions of possible low-lying excited states to individual nucleon matrix elements.","PeriodicalId":147987,"journal":{"name":"Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019)","volume":"81 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133391342","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: 6

Dilaton EFT from p-regime to RMT in the $epsilon$-regime 从p区扩展EFT到-区中的RMT

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-02-06 DOI: 10.22323/1.363.0246

Z. Fodor, K. Holland, J. Kuti, C. Wong

{"title":"Dilaton EFT from p-regime to RMT in the $epsilon$-regime","authors":"Z. Fodor, K. Holland, J. Kuti, C. Wong","doi":"10.22323/1.363.0246","DOIUrl":"https://doi.org/10.22323/1.363.0246","url":null,"abstract":"New results are reported from tests of a low-energy effective field theory (EFT) that includes a dilaton field to describe the emergent light scalar with ${ 0^{++} }$ quantum numbers in the strongly coupled near-conformal gauge theory with a massless fermion flavor doublet in the two-index symmetric (sextet) representation of the SU(3) color gauge group. In the parlor of walking --- based on the observed light scalar, the small $beta$-function at strong coupling, and the large anomalous scale dimension of the chiral condensate --- the dilaton EFT hypothesis is introduced to test if it explains the slowly changing nearly scale invariant physics that connects the asymptotically free UV fixed point and the far-infrared scale of chiral symmetry breaking. The characteristic dilaton EFT signatures of scale symmetry breaking are probed in this report in the small Compton wavelength limit of Goldstone bosons relative to the size of the lattice volume (p-regime) and in the limit when the Goldstone wavelength exceeds the size of the volume ($epsilon$-regime). Random matrix theory (RMT) analysis of the dilaton EFT is applied to the lowest part of the Dirac spectrum in the $epsilon$-regime to directly test predictions for the fundamental EFT parameters. The predictions, sensitive to the choice of the dilaton potential, were limited before to the p-regime, using extrapolations from far above the chiral limit with untested uncertainties. The dilaton EFT analysis of the $epsilon$-regime was first suggested in cite{Fodor:2019vmw}, with some results presented at this conference and with our continued post-conference analysis added to stimulate discussions.","PeriodicalId":147987,"journal":{"name":"Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132201207","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: 9

Lattice Gauge Theory for a Quantum Computer 量子计算机的晶格规范理论

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-02-02 DOI: 10.22323/1.363.0112

R. Brower, D. Berenstein, H. Kawai

引用次数: 33

$K_{l3}$ form factors in $N_f = 2+1$ QCD at physical point on large volume $K_{l3}$形式因子在$N_f = 2+1$ QCD在大体积的物理点上

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-02-01 DOI: 10.22323/1.363.0186

J. Kakazu, K. Ishikawa, N. Ishizuka, Y. Kuramashi, Y. Nakamura, Y. Namekawa, Y. Taniguchi, N. Ukita, T. Yamazaki, T. Yoshi'e

引用次数: 0

Thermal modifications of quarkonia and heavy quark diffusion from a comparison of continuum-extrapolated lattice results to perturbative QCD 从连续外推晶格结果与微扰QCD比较夸克和重夸克扩散的热修正

Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019) Pub Date : 2020-02-01 DOI: 10.22323/1.363.0207

Anna-Lena Lorenz, H. Ding, O. Kaczmarek, H. Ohno, H. Sandmeyer, Hai-Tao Shu

{"title":"Thermal modifications of quarkonia and heavy quark diffusion from a comparison of continuum-extrapolated lattice results to perturbative QCD","authors":"Anna-Lena Lorenz, H. Ding, O. Kaczmarek, H. Ohno, H. Sandmeyer, Hai-Tao Shu","doi":"10.22323/1.363.0207","DOIUrl":"https://doi.org/10.22323/1.363.0207","url":null,"abstract":"We investigate the in-medium modifications of heavy quarkonia in the vector channel and the heavy quark diffusion coefficient by comparing Euclidean correlators from the lattice to a perturbative spectral function. On the lattice side, we work with continuum extrapolated data from four different large and fine lattices with Clover-improved Wilson fermions in the quenched approximation at five temperatures (0.75, 1.1, 1.3, 1.5 and 2.25$T_c$). On the perturbative side, we use a combination of pNRQCD and vacuum asymptotics to describe the spectral function. After accounting for systematic errors, we obtain a spectral function that is suited to describe the bound state region. This spectral function describes charmonium well without a resonance peak at any of our analyzed temperatures above $T_c$, while we observe a thermally broadened resonance peak for bottomonium that is only melted at our largest temperature, $2.25T_c$. For the transport contribution we assume a Breit-Wigner shaped peak and find that the drag coefficient of charm quarks is larger than that of bottom quarks.","PeriodicalId":147987,"journal":{"name":"Proceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128218902","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: 3