Constant spatial torsion induces spin-dependent effective masses for neutrinos that modify both frequencies and amplitudes of flavor oscillations in the QFT description, with largest effects at low momentum when torsion scale matches neutrino masses.
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Symmetric teleparallel gravity has the same number of degrees of freedom as general relativity, confirmed via its Hamiltonian formulation after deriving generalized extrinsic geometry relations.
Hybrid f(Q) cosmology with a 1/Q term is forced into background degeneracy with LambdaCDM but breaks it in the growth sector, yielding moderate preference over LambdaCDM when RSD data are included while leaving the background unchanged.
Metric-affine gravity formulates equivalence principle violations via non-metricity that parallel finite-temperature mass-ratio shifts, and a generalized Fermi-Walker derivative shows no orthonormal tetrad propagates along observer worldlines.
citing papers explorer
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Spin-dependent neutrino oscillations in torsion backgrounds: A quantum-field-theoretic analysis
Constant spatial torsion induces spin-dependent effective masses for neutrinos that modify both frequencies and amplitudes of flavor oscillations in the QFT description, with largest effects at low momentum when torsion scale matches neutrino masses.
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Extrinsic geometry and Hamiltonian analysis of symmetric teleparallel gravity
Symmetric teleparallel gravity has the same number of degrees of freedom as general relativity, confirmed via its Hamiltonian formulation after deriving generalized extrinsic geometry relations.
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Beyond the Cosmological Constant: Breaking the Geometric Degeneracy of $ f(Q) $ cosmology via Redshift-Space Distortions
Hybrid f(Q) cosmology with a 1/Q term is forced into background degeneracy with LambdaCDM but breaks it in the growth sector, yielding moderate preference over LambdaCDM when RSD data are included while leaving the background unchanged.
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Equivalence Principle violation in metric-affine gravity and finite-temperature effects
Metric-affine gravity formulates equivalence principle violations via non-metricity that parallel finite-temperature mass-ratio shifts, and a generalized Fermi-Walker derivative shows no orthonormal tetrad propagates along observer worldlines.
- Primary Constraints of Newer General Relativity