Cosmology News & Events

The Domain Wall (DW) problem is the fact that DW networks that result from the spontaneous breaking of discrete symmetries tend to dominate the universe's energy budget.
However, if the symmetry is not exact the network annihilates and the problem turns into a virtue, as the network tends to be an abundant component before its collapse, and is thus easier to probe.

Composite Higgs Models are still viable extensions of the Standard  Model. I will first review the basic idea of this class of models.

15 years after the first edition of the Black Holes Workshop that took place at the Faculty of Sciences of Porto University, the XVI Black Holes Workshop returned to Porto, this time in the Faculty of Engineering. The next edition will take place at the University of Aveiro on 19-20 December 2024.

A call for a 7-month research grant in Strong Gravity for M.Sc. holders, within the research grant Gravitational waves and black holes as ultralight dark matter particle detectors, CERN/FIS-PAR/0024/2021, is open from December 7th to 21st, 2023. See attached document for details or the Euraxess announcement here.

Proca stars, first discovered in this paper, are a vector cousin of the well known model of scalar boson stars - see these papers for reviews [1], [2] and comparisons between the two models [3], [4].

The Iranian Conference on High Energy Physics took place from 20-22 November 2023 (online). C. Herdeiro was one of the Plenary Speakers. See the programme here.

During the week of 13-17 November 2023 we had the pleasure to host Rodrigo Vicente from IFAE, U. Barcelona and Roman Pasechnik from the U. Lund to tell us about their latest research. Of course, discussions are better over a nice lunch!

C. Herdeiro visited the St. Kliment Ohridski U. Sofia (Bulgaria) delivering a talk on Boson stars and Black holes with synchronised hair, invited by Prof. Stoytcho Yazadjiev (both in the photo).

Full name: Chen Liang

Education:

2023    M.Sc. Physics (Lanzhou University, China)
2020    B.Sc. Physics (Shanxi Normal University, China)

Research area: Strong gravity; Black holes; Mathematical Physics