Cosmology

Gr@v students M. Brito, J. Ferreira and M. Mariano were amongst the participants of the New Frontiers in Strong Gravity meeting in Benasque, in July 2026. 

João Novo successfully defended his Ph.D. thesis with title Light rings, shadows and geodesic structure
of four and five dimensional spacetimes on July 27th 2026. The Ph.D. committe was composed by  Astrid Eichhorn, Volker Perlick, Petya Georgieva, António Morais, Pedro Cunha (co-advisor) and João Matias (president). The thesis was advised by C. Herdeiro. Congratulations João!  

Member of Gr@v H. Olivares participated at the Spanish and Portuguese Relativity Meeting 2026, held in Murcia, Spain, to deliver an invited talk on simulating and observing black hole mimickers.

We got together on May 20th 2026 at Etevaldo's favourite restaurant in Aveiro (O Telheiro), to celebrate his 4.5 years in Gr@v. In the same day we had an excellent seminar from Hryhorii Ovcharenko, visiting from Prague. Etevaldo is now starting a post-doctoral position in Brazil. Many thanks, Etevaldo, for being with us. See you soon!

Geometric Cosmology—and in particular Geometric Inflation (GI)—provides a higher-curvature mechanism capable of producing an accelerated expansion in the early Universe without invoking an inflaton in its minimal realization.