28 August 2023 to 1 September 2023
Leipzig University
Europe/Berlin timezone

Anomalies and the stability of stars

1 Sept 2023, 10:30
40m
Leipzig University

Leipzig University

Faculty of Physics and Earth Sciences Linnéstr. 5 04103 Leipzig
Contributed talk Morning session 1

Speaker

Ignacio Reyes

Description

What are the essential aspects of quantum theory needed in order to understand compact relativistic objects? Relying solely on universal properties of QFTs at high energies, we show that as a star contracts towards its Buchdahl radius the effects of the trace anomaly become macroscopic at densities much below the Planck scale. As a consequence the unstable modes of scalar fields disappear, implying the system recovers linear stability under scalar perturbations.

Presentation materials