3 papers
gr-qc2026
Natural modification of quantum uncertainty, modified gravity, and cosmology
Christian G. Boehmer, Eissa Al-Nasrallah
A common approach in physics and mathematics is to extend and modify theories and frameworks by considering what is often described as a `natural' extension or modification by incl…
gr-qc2026
Non-minimal fluid Lagrangian couplings
Christian G. Boehmer, Erik Jensko, Eissa Al-Nasrallah
Gravitational models with non-minimal couplings involving functions of the matter Lagrangian and curvature have become popular in recent decades. By coupling the matter Lagrangian…
gr-qc2025
Consistent energy-momentum trace couplings of fluids
Christian G. Boehmer, Eissa Al-Nasrallah
Gravitational models with non-minimal couplings involving the trace of the energy-momentum tensor have become increasingly popular. The idea of coupling the trace of the matter ten…