Relativistic general-order coupled-cluster method for high-precision calculations: Application to the Al+ atomic clock

Mihály Kállay, H. S. Nataraj, B. K. Sahoo, B. P. Das, Lucas Visscher

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We report the implementation of a general-order relativistic coupled-cluster method for performing high-precision calculations of atomic and molecular properties. As a first application, the black-body radiation shift of the Al+ clock has been estimated precisely. The computed shift relative to the frequency of the 3s2 1S0e→3s3p 3P0o clock transition given by (-3.66±0.60)×10-18 calls for an improvement over the recent measurement with a reported result of (-9±3)×10 -18.

Original languageEnglish
Article number030503
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume83
Issue number3
DOIs
Publication statusPublished - Mar 22 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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