Cosmology

Cosmology is the study of the large scale structure of the Universe, as well as its dynamics. Our group has been involved in the study and development of cosmological models, in particular to explain the accelerated phases of the cosmological evolution, dubbed inflationary phases.

For our latest developments/activities in this area, please see the listing below.


Latest Cosmology Publications

Inflation with Planck: a survey of some "exotic" inflationary models, Cláudio Gomes, Orfeu Bertolami, João G. Rosa; arXiv:1803.08084 [hep-th].

Publication type
Regular Articles
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Scale-invariant scalar field dark matter through the Higgs portal, Catarina Cosme, João G. Rosa, Orfeu Bertolami; arXiv:1802.09434 [hep-ph].

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Regular Articles
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Electroweak phase transitions in multi-Higgs models: the case of Trinification-inspired THDSM, Thibault Vieu, António P. Morais, Roman Pasechnik; arXiv:1801.02670 [hep-ph].

Publication type
Regular Articles
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Adiabatic out-of-equilibrium solutions to the Boltzmann equation in warm inflation, Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos, João G. Rosa, JHEP 1802, 063 (2018)e-Print: arXiv:1711.09023 [hep-ph].

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Regular Articles
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Scalar field dark matter with spontaneous symmetry breaking and the 3.5 keV line, Catarina Cosme, Joao G. Rosa, O. Bertolami; arXiv:1709.09674 [hep-ph].

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Regular Articles
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Latest Cosmology News & Events

"Nullius in Verba"

The University of Aveiro and Gr@v join the many worldwide tributes to the life and work of Stephen Hawking. As a small contribution, the U. Aveiro asked Gr@v member C. Herdeiro to write an article for its online news that can be found here. A video statement can be found here (both in Portuguese).

Greybody factors and quasinormal modes under scalar perturbations in two concrete exactly solvable models

Seminars 2018
Speaker
Grigorios Panotopoulos (CENTRA, IST-Lisbon)
Event date
Venue
Anf. Física
Ends on
Event type

Greybody factors are frequency dependent quantities that measure the deviation from the perfect black body spectrum of Hawking radiation, and they provide us with valuable information about the near horizon structure of black holes. In
addition, when black holes are perturbed the geometry of spacetime undergoes dumbed oscillations.