# Spontaneous dark-matter mass generation along cosmological attractors in string theory

- Institution: CERN
- Department: Conferences & Workshops
- Speaker: Thibaut Coudarchet
- Year: 2019
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3016058)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

I will talk about a new scenario for generating a relic density of non-relativistic dark matter in the framework of heterotic string theory with spontaneously broken supersymmetry and at finite temperature. In this scenario, contrary to the standard thermal freeze-out process, dark-matter particles are produced while they are still relativistic and then decouple from the thermal bath because of a sudden increase of their mass above the universe temperature. The mass increase is sourced by the destabilization of a modulus triggered when the temperature of the universe drops below the supersymmetry breaking scale. This phase transition is enforced to take place in certain models thanks to a cosmological attractor mechanism..

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## Lectures

1. [Spontaneous dark-matter mass generation along cosmological attractors in string theory](https://invisiblenetwork.ai/learn/cern/3016058/edc810d9348b), 17 min (CERN's player)