Roman Pasechnik
Senior lecturer
Multi-peaked signatures of primordial gravitational waves from multi-step electroweak phase transition
Author
Summary, in English
The first-order electroweak phase transition in the early universe could occur in multiple steps leading to specific multi-peaked signatures in the primordial gravitational wave (GW) spectrum. We argue that these signatures are generic phenomena in multi-scalar extensions of the Standard Model. In a simple example of such an extension, we have studied the emergence of reoccuring and nested vacuum bubble configurations and their role in the formation of multiple peaks in the GW spectrum. The conditions for potential detectability of these features by the forthcoming generation of interferometers have been studied.
Department/s
- Theoretical Particle Physics - Has been reorganised
Publishing year
2019
Language
English
Publication/Series
Proceedings of Science
Volume
364
Document type
Conference paper
Topic
- Astronomy, Astrophysics and Cosmology
Conference name
2019 European Physical Society Conference on High Energy Physics, EPS-HEP 2019
Conference date
2019-07-10 - 2019-07-17
Conference place
Ghent, Belgium
Status
Published
ISBN/ISSN/Other
- ISSN: 1824-8039