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gr-qc2026★ 1 cited
Coupling Electromagnetism to Torsion: Black Holes and Spin-Charge Interactions
Sebastian Bahamonde, Jorge Maggiolo, Christian Pfeifer
The coupling between matter fields and gravity, encoded in the geometry of spacetime, can be realized in various ways. Most commonly, a minimal coupling principle is employed, mean…
gr-qc2025
Unified field theory from Hamilton cotangent bundle geometry - The Einstein-Maxwell system
Christian Pfeifer, José Javier Relancio
The unification of all physical fields into one mathematical object and the derivation of all physical field equations from that object in one framework is a long-lasting endeavor…
gr-qc2025
Universality of free fall in Planck-scale deformed Newtonian gravity
Giuseppe Fabiano, Domenico Frattulillo, Christian Pfeifer +1
The universality of free fall is one of the most cherished principles in classical gravity. Its fate in the quantum world is one of the key questions in fundamental physics. We inv…