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math-ph2026
Autoparallels and the Inverse Problem of the Calculus of Variations
Lavinia Heisenberg
We prove that autoparallel curves associated with a torsion-free but not necessarily metric-compatible affine connection can be derived from an action principle. We explicitly cons…
math-ph2025
Counting Degrees of Freedom: A Method Applicable from Scalars to f(Q) Gravity and Beyond
Lavinia Heisenberg
We present a clear, step-by-step method for counting degrees of freedom and identifying constraints in general field theories. This approach, grounded in the works of Einstein, Hil…