In this talk, we show how the swampland conjecture, which has
recently been attracting attention in string theory and gravity
theory, relates to the slow-roll condition of inflation. First, we
will briefly explain the reason why we focus on the swampland
conjecture to investigate the dynamics of inflation. Next, we discuss
We consider the interaction between a plane wave and a (counter-moving) black hole. We show that energy is transferred from the black hole to the wave, giving rise to a negative absorption cross-section.
Gr@v and MAP-PDMA Ph.D. student João Oliveira was awareded an "Outstanding Presentation Award - Gold Prize" for his scientific presentation at the 29th workshop on General Relativity and Gravitation, in Japan, at the University of Kobe.
More than 200 researchers participated in this conference, of which 66 were selected to deliver oral presentations. Of these, 56 were nominated for the outstanding presentation award, but only 4 were awarded this distinction, including João Oliveira.
The V Amazonian Symposium on Physics was held in Belém, Brazil, from 18-22 November 2019. This meeting was co-sponsored by the Marie Curie RISE FunFiCO network and co-organised by Gr@v members. The invited speakers included Bill Unruh, Bob Wald, John Friedman, Jorge Zanelli and Mirjam Cvetic, amongst others.
Gra@v members C. Herdeiro and E. Radu, together with Nuno Santos from IST-Lisbon, visited Universidade Federal do Pará (UFPa), Brazil, in Amazonia, during November 2019, within the Marie Curie RISE FunFiCO partnership. In the photon in the river Guamá, with Carolina Benone, a former UFPa/Aveiro PhD student, now staff at UFPa.
Gr@v members C. Herdeiro and E. Radu, were two of the speakers of the Mini-workshop on "Black holes and symmetries" at the Instituto de Física, Pontifica Universidad Católica Valparaíso, Chile. The workshop was organised by Olivera Moskovic and Dumitru Astefanesei. The other speaker was Marc Henneaux from the Université Libre de Bruxelles, Belgium.
Gr@v Ph.D. students Alexandre Pombo, João Oliveira and Jorge Delgado visited Kindai University, Japan as members of the StronGrHEP Marie Curie RISE project. Their host is Professor Akihiro Ishibashi.
In this work, we study cosmological and astrophysical applications of the recently proposed generalized hybrid metric-Palatini gravity theory, which combines features of both the metric and th
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
