Searching for new physics through atomic, molecular and optical precision measurements

Orzel, Chad

doi:10.1088/0031-8949/86/06/068101

Cited by 17 publications

(19 citation statements)

References 97 publications

(130 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The precise measurement of frequency in atomic systems has important applications both in fundamental science, such as tests of relativity [1,2] and searches for physics beyond the standard model [3], and in technologies such as satellite navigation [4]. Clocks based on optical transitions have begun to surpass the performance of microwave standards, currently used to define the second [5].…”

Section: Pacs Numbersmentioning

confidence: 99%

Spin Squeezing in a Rydberg Lattice Clock

et al. 2014

View full text Add to dashboard Cite

The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

show abstract

Section: Pacs Numbersmentioning

confidence: 99%

Spin Squeezing in a Rydberg Lattice Clock

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Aside from sheer scientific curiosity, they find some justification in the fact that observations, both terrestrial and astronomical [8,9], do not exclude that the constants of Nature are, eventually, not really constant [10]. For instance, there exist constraints on the variation of the fine-structure constant, which depend on the time and spatial scale of the experiment [10][11][12][13]. A comparison of rates between different atomic and molecular clocks in laboratory give |∆α/α| < 10 −14 ÷10 −17 (see [10,13] for a detailed compilation of results), where ∆α = α(t) − α(t 0 ) is the change in α from some time t in the past with respect to today's value α(t 0 ).…”

Section: Introductionmentioning

confidence: 99%

Varying electric charge in multiscale spacetimes

2014

View full text Add to dashboard Cite

We derive the covariant equations of motion for Maxwell field theory and electrodynamics in multiscale spacetimes with weighted Laplacian. An effective spacetime-dependent electric charge of geometric origin naturally emerges from the theory, thus giving rise to a varying fine-structure constant. The theory is compared with other varying-coupling models, such as those with a varying electric charge or varying speed of light. The theory is also confronted with cosmological observations, which can place constraints on the characteristic scales in the multifractional measure. We note that the model considered here is fundamentally different from those previously proposed in the literature, either of the varying-e or varying-c persuasion.

show abstract

“…Trapped ions provide a useful physical system for a variety of experimental applications including quantum computation [1,2], precision measurement [3,4], and frequency standards [5]. These applications leverage the environmental isolation and long trap lifetimes provided by trapped ions to obtain long interrogation times and relatively systematic-error free methodologies.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the branching fractions and lifetime of the5D5/2level ofBa+

et al. 2014

View full text Add to dashboard Cite

We present a measurement of the branching fractions for decay from the long-lived 5D 5/2 level in 138 Ba + . The branching fraction for decay into the 6S 1/2 ground state was found to be 0.846(25)stat (4)sys. We also report an improved measurement of the 5D 5/2 lifetime, τ5D 5/2 = 31.2(0.9) s. Together these measurements provide the first experimental determination of transition rates for decay out of the 5D 5/2 level. The low (< 7 × 10 −12 Torr) pressure in the ion trap in which these measurements were made simplified data acquisition and analysis. Comparison of the experimental results with theoretical predictions of the transition rates shows good agreement.

show abstract

Searching for new physics through atomic, molecular and optical precision measurements

Cited by 17 publications

References 97 publications

Spin Squeezing in a Rydberg Lattice Clock

Spin Squeezing in a Rydberg Lattice Clock

Varying electric charge in multiscale spacetimes

Measurement of the branching fractions and lifetime of the5D5/2level ofBa+

Contact Info

Product

Resources

About