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Open Quantum Systems Decoherence Quantum Chemistry

Constraints on anomalous spin-spin interactions from spin-exchange collisions

arXiv

Authors: D. F. Jackson Kimball, Alec Boyd, D. Budker

Year

2010

Paper ID

10953

Status

Preprint

Abstract Read

~2 min

Abstract Words

138

Citations

N/A

Abstract

Measured and calculated cross sections for spin-exchange between alkali atoms and noble gases (specifically sodium and helium) are used to constrain anomalous spin-dependent forces between nuclei at the atomic scale $sim 10^-8 {rm cm}$. Combined with existing stringent limits on anomalous short-range, spin-dependent couplings of the proton, the dimensionless coupling constant for a heretofore undiscovered axial vector interaction of the neutron arising from exchange of a boson of mass lesssim 100 {rm eV} is constrained to be g_Aⁿ/sqrt{4 πhbar c} < 2 times 10^-3. Constraints are established for a velocity- and spin-dependent interaction propto prn{mathbf{I} cdot mathbf{v}} prn{mathbf{K} cdot mathbf{v}}, where mathbf{I} and mathbf{K} are the nuclear spins of He and Na, respectively, and mathbf{v} is the relative velocity of the atoms. Constraints on torsion gravity are also considered.

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Measured and calculated cross sections for spin-exchange between alkali atoms and noble gases (specifically sodium and helium) are used to constrain anomalous spin-dependent...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1010.1505 [2] arXiv https://arxiv.org/abs/1010.1505 [3] Publisher https://arxiv.org/abs/1010.1505

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