title: Precision test of mass-ratio variations with lattice-confined ultracold molecules.
abstract: We propose a precision measurement of time variations of the proton-electron mass ratio using ultracold molecules in an optical lattice. Vibrational energy intervals are sensitive to changes of the mass ratio. In contrast to measurements that use hyperfine-interval-based atomic clocks, the scheme discussed here is model independent and does not require separation of time variations of different physical constants. The possibility of applying the zero-differential-Stark-shift optical lattice technique is explored to measure vibrational transitions at high accuracy.
authors: JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA.
authors: T
authors: T
authors: Zelevinsky
authors: S
authors: S
authors: Kotochigova
authors: Jun
authors: J
authors: Ye