FAU^2 Mini-Workshop on Loop Quantum Gravity

Session

Session 3

3 May 2023, 13:30

ECAP Laboratory Building

7. Early Dark Energy: a status update and new constraints using the profile likelihood

Laura Herold

03/05/2023, 13:30

Early dark energy (EDE) is a dark energy-like component in the early universe, which was proposed to solve the Hubble tension, a discrepancy between different measurements of the current expansion rate of the universe. Currently, there is no consensus in the literature as to whether EDE can simultaneously solve the Hubble tension and provide an adequate fit to the data from the cosmic...

4. Radiative correction of 4D spinfoam model with a cosmological constant

Qiaoyin Pan

03/05/2023, 14:30

Infrared divergence is a common feature of spinfoam models with a vanishing cosmological constant. The disappearance of divergence at the present of a non-zero cosmological constant was conjectured and then recently proved in a spinfoam model constructed with complex Chern-Simons theory. It has been an active research area to study how such divergence depends on the value of the cosmological...