In this talk I will review some properties of solutions to the static, spherically symmetric Einstein-Klein-Gordon system for a collection of an arbitrary odd number N of complex scalar fields with an internal U(N) symmetry and no self-interactions known as l-boson stars.
A call for a 10 month researcher position within the project Testing the Kerr hypothesis with gravitational waves and lensing, PTDC/FIS-AST/3041/2020, is open until July 3rd 2023. The call in Portuguese and English is attached. The Euraxess link is here.
In this talk, I aim to challenge persistent misconceptions surrounding Brans-Dicke and (Buchdahl's) pure Ricci-squared theories. Through concrete counterexamples in the form of new exact solutions, I will shed light on theoretical aspects related to the violation of the Weak Energy Condition, the construction of wormholes, and the revelation of novel structures within these spacetimes.
Within the NewFunFiCO network, coordinated by our group, we are co-organizing a workshop on fundamental fields and compact objects: new opportunities, at ICF - UNAM - Campus de Morelos, Mexico, from October 4-6 2023.
The Journées Relativistes de Tours, France, took place from 31 May - 2 June 2023 discussing the latest developments in the field. C. Herdeiro and E. Radu were two of the invited speakers.
Our group has received 1.6 million CPU-hours at the Navigator Cluster in Coimbra through the FCT call for Advanced Computing Projects. This project is led by Miguel Zilhão and is titled "Dynamics of bosonic stars" (ref. 2022.15804.CPCA.A2).
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
