Orfeu Bertolami

Orfeu Bertolami (São Paulo, Brazil, 1959) is a theoretical physicist who works in problems of astrophysics, cosmology, general relativity and quantum gravity. He worked at Instituto Superior Técnico in Lisbon, Portugal from 1991 to 2010. He is currently professor at Departamento de Física e Astronomia of the Faculdade de Ciências da Universidade do Porto.

He is the author of a book to raise the awareness of the public on science about the history of ideas in astronomy, cosmology and theories of gravity (in Portuguese) and of a technical text on the aspects of gravity and propulsion in space published by the European Space Agency:

* ''O Livro das Escolhas Cósmicas'', Editora Gradiva 2006 * ''Gravity Control and Possible Influence on Space Propulsion: A Scientific Study'', European Space Agency 2002

In particular, Bertolami studied [http://inspirehep.net/record/427737/ baryogengesis], the [https://doi.org/10.1007%2FBF02728301 cosmological constant problem] and its connection with the [https://arxiv.org/abs/0905.3110 equivalence principle], the [https://arxiv.org/abs/gr-qc/0202064 generalized Chaplygin gas model] of unification of Dark Energy (to explain the cosmic acceleration) and Dark Matter (to explain the flattening of the rotation curves of galaxies) and some Modified models of gravity with [https://arxiv.org/abs/0704.1733 non-minimal coupling between curvature and matter]. He has also worked on the Pioneer Anomaly, which was shown to be most likely due to [https://arxiv.org/abs/0807.0041 on-board thermal effects] and [https://arxiv.org/abs/arXiv:1103.5222 reflection of the generated radiation]. Most recent work concerns [http://inspirehep.net/record/1335733/ extensions of quantum mechanics based on phase-space noncommutativity]. Provided by Wikipedia