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gr-qc2026
Ghost-free higher-gradient Newtonian gravity from the Second Law of Thermodynamics
M. Pszota, P. Ván
Higher-gradient modifications of Newtonian gravity remove the point-mass singularity, but their Lagrangian dynamics is haunted by the Ostrogradsky instability. We show that the sam…
physics.gen-ph2026
On the energy balance of Newtonian Gravitation
R. Trasarti-Battistoni, M. Pszota, P. Ván
It is shown that the energy density formulas of Newtonian gravity by Maxwell, Bondi and Ohanian cannot be distinguished by boundary conditions, and also the corresponding energy ba…