Physical nonviability of f(Q) in the scalar-tensor representation
Jose Beltrán Jiménez, Alejandro Jiménez Cano, Tomi S. Koivisto
gr-qc, astro-ph.CO
Submitted: 2026-06-29
Comments: 7 pages, no figures. We added further clarifications on the propagating nature of the ghost and the number of dofs
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Terminology
Sources
- The Geometrical Trinity of Gravity
- General Teleparallel Quadratic Gravity
- Symmetric teleparallel general relativity
- Lagrange formulation of the symmetric teleparallel gravity
- Coincident General Relativity
- Teleparallel Palatini theories
- Cosmology in $f(Q)$ geometry
- Pathological Character of Modifications to Coincident General Relativity: Cosmological Strong Coupling and Ghosts in $f(\Q)$ Theories
- A class of ghost-free theories in symmetric teleparallel geometry
- Exploring the stability of $f(Q)$ cosmology near general relativity limit with different connections
- Accidental gauge symmetries of Minkowski spacetime in Teleparallel theories
- General Parallel Cosmology
- Complete classification of cosmological teleparallel geometries
- Ghost instabilities and strong coupling in quadratic non-metricity theories
- Degrees of freedom of a quadratic scalar-nonmetricity theory
- Lost in translation: the Abelian affine connection (in the coincident gauge)
- Spatial curvature in coincident gauge $f(Q)$ cosmology
- Resummation of Massive Gravity
- Nonpropagating ghost in covariant $f(Q)$ gravity
- Ghosts without runaway
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