Relativistic coupled-cluster single-double method applied to alkali-metal atoms.pdfVIP

下载本文档

1
0
约 12页
2017-04-05 发布于江苏
举报
版权申诉

Relativistic coupled-cluster single-double method applied to alkali-metal atoms.pdf

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

Relativistic coupled-cluster single-double method applied to alkali-metal atoms

a r X i v : p h y s i c s / 0 7 0 2 0 9 0 v 1 [ p h y s i c s .a t o m - p h ] 1 2 F e b 2 0 0 7 Relativistic coupled-cluster single-double method applied to alkali-metal atoms Rupsi Pal and M. S. Safronova Department of Physics and Astronomy, University of Delaware, Newark, DE 19716-2570, USA W. R. Johnson University of Notre Dame, Notre Dame, Indiana 46556, USA Andrei Derevianko University of Nevada, Reno, NV 89557-0042, USA Sergey G. Porsev Petersburg Nuclear Physics Institute, Leningrad district, Gatchina, 188300, Russia and University of Nevada, Reno, NV 89557-0042, USA A relativistic version of the coupled-cluster single-double (CCSD) method is developed for atoms with a single valence electron. In earlier work, a linearized version of the CCSD method (with extensions to include a dominant class of triple excitations) led to accurate predictions for energies, transition amplitudes, hyperfine constants, and other properties of monovalent atoms. Further progress in high-precision atomic structure calculations for heavy atoms calls for improvement of the linearized coupled-cluster methodology. In the present work, equations for the single and double excitation coefficients of the Dirac-Fock wave function, including all non-linear coupled-cluster terms that contribute at the single-double level are worked out. Contributions of the non-linear terms to energies, electric-dipole matrix elements, and hyperfine constants of low-lying states in alkali-metal atoms from Li to Cs are evaluated and the results are compared with other calculations and with precise experiments. PACS numbers: 31.15.Dv 32.10.-f 32.10.Fn 32.10.Hq 32.70.Cs I. INTRODUCTION A relativistic version of the coupled-cluster single- double (CCSD) approximation for monovalent atoms is developed. In this approximation, single and double ex- citations of the (frozen-core) Dirac-Fock wave function for an atom with one valence electron are included to all orders in perturbation theory. The relativisti