Enhanced sensitivity to variation of me/mp in molecular spectra

被引：167

作者：

DeMille, D. ^{[1
]}

Sainis, S. ^{[1
]}

Sage, J. ^{[1
]}

Bergeman, T. ^{[2
]}

Kotochigova, S. ^{[3
]}

Tiesinga, E. ^{[4
,5
]}

机构：

[1] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[2] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[3] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA

[4] Natl Inst Stand & Technol, Joint Quantum Inst, Gaithersburg, MD 20899 USA

[5] Natl Inst Stand & Technol, Atom Phys Div, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.043202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose new experiments with high sensitivity to a possible variation of the electron-to-proton mass ratio mu equivalent to m(e)/m(p). We consider a nearly degenerate pair of molecular vibrational levels, each associated with a different electronic potential. With respect to a change in mu, the change in the splitting between such levels can be large both on an absolute scale and relative to the splitting. We demonstrate the existence of such pairs of states in Cs-2, where the narrow spectral lines achievable with ultracold molecules make the system promising for future searches for small variations in mu.

引用

页数：4

共 27 条

[1] SPECTROSCOPIC DETERMINATION OF THE S-WAVE SCATTERING LENGTH OF LITHIUM [J].