From the 1 of 3 linked papers with an AI index.
3 papers
Light propagation and intensity transport in metric-affine geometry
Antonio De Felice, Lavinia Heisenberg, Gonzalo J. Olmo +1
The paper investigates how electromagnetic waves travel in spacetimes with torsion and non‑metricity, constructing gauge‑invariant models that can alter light cones, cause birefrin…
Cosmology from asymptotically safe Proca theories
Carlos Pastor-Marcos, Lavinia Heisenberg, Ãlvaro Pastor-Gutiérrez +2
Effective field theories for cosmology offer a powerful framework to investigate the dynamics of space--time and address longstanding open puzzles. In this work, we initiate a prog…
Neutron stars in gravity
Lavinia Heisenberg, Carlos Pastor-Marcos
We investigate the challenges of constructing neutron star (NS) solutions in gravity, highlighting the importance of treating the affine connection as an active, dy…