High Energy Physics News & Events

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Topological Solitons in Gravity

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Speaker
Pierre Heidmann (Ohio State University)
Event date
Venue
Online only
Event type

I will discuss new degrees of freedom of gravity as motivated by string theory. Although they are expected to be generically quantum mechanical, classes of such states are coherent enough to admit classical descriptions in Einstein gravity. I will explain how to describe them as novel ultra-compact geometries without horizon or singularity.

Cosmological tests on non-metricity based theories of gravity​

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Speaker
José Ferreira (University of Aveiro and CIDMA)
Event date
Venue
Hybrid: Room 11.2.21 and Zoom
Event type
In this seminar, we study and present constraints for two cosmological models based on non-metric theories of gravity, referred to as f(Q) gravity, using both current datasets and forecast Standard Siren events.
The first model is the most general f(Q) model that replicates a ΛCDM background, with deviatio