Tag: Curvature
Curvature shapes chiral transport and entanglement in fermions
What the study found The study found that spacetime curvature in AdS2 and AdS2 black hole backgrounds can produce strongly asymmetric, or chiral, wave propagation for Dirac fermions. The authors report that this propagation is confined within an inhomogeneous Lieb-Robinson cone, a bound on how fast information spreads in a system. Why the authors say…
Starobinsky model remains viable in parts of parameter space
What the study found The authors report that, despite recent data placing pressure on the pure Starobinsky inflation model, there is still a significant region of parameter space where the model remains highly consistent with the latest observations. They also say that adding a cubic $R^3$ term can shift the model's predictions toward better agreement…