Constraining Spacetime Nonmetricity with Neutron Spin Rotation in Liquid He-4

Abstract

General spacetime nonmetricity coupled to neutrons is studied. In this context, it is shown that certain nonmetricity components can generate a rotation of the neutron's spin. Available data on this effect obtained from slow-neutron propagation in liquid helium are used to constrain isotropic nonmetricity components at the level of $10^{-22}$GeV. These results represent the first limit on the nonmetricity ${\zeta }_2^{(6)}{S}_{000}$ parameter as well as the first measurement of nonmetricity inside matter.

5 pages, accepted for publication in Physics Letters B

References in corpus (11)

• Constraints on Torsion from Lorentz Violation
• Preferred-Frame and CP-Violation Tests with Polarized Electrons
• Limits on a CP-violating scalar axion-nucleon interaction
• New CP-violation and preferred-frame tests with polarized electrons
• Constraining Torsion with Gravity Probe B
• Eliminating the CPT-Odd f Coefficient from the Lorentz-Violating Standard Model Extension
• Can Gravity Probe B usefully constrain torsion gravity theories?
• Torsion Phenomenology at the LHC
• Removal of zero-point drift from AB data and the statistical cost
• Testing metric-affine f(R)-gravity by relic scalar gravitational waves
• Parity-Even and Time-Reversal-Odd Neutron Optical Potential in Spinning Matter Induced by Gravitational Torsion

Cited by in corpus (7)

• Backgrounds in gravitational effective field theory
• Modified gravity: a unified approach
• Searches for beyond-Riemann gravity
• Searching for CPT Violation with Neutral-Meson Oscillations
• Beta-Decay Spectrum and Lorentz Violation
• Experimental Upper Bound and Theoretical Expectations for Parity-Violating Neutron Spin Rotation in 4He
• The analogy of the Lorentz-violating fermion-gravity and fermion photon couplings