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

Warm inflation within a supersymmetric distributed mass model, Mar Bastero-Gil, Arjun Berera, Rafael Hernández-Jiménez, João G. Rosa; arXiv:1812.07296 [hep-ph].

Publication type
Regular Articles
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Warm Little Inflaton becomes Cold Dark Matter, João G. Rosa, Luís B. Ventura; Phys. Rev. Lett. 122, 161301 (2019), arXiv:1811.05493 [hep-ph].

Publication type
Regular Articles
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nu-Inflaton dark matter, António Torres Manso, João G. Rosa; JHEP 1902, 020 (2019), arXiv:1811.02302 [hep-ph].

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Regular Articles
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Compact objects and the swampland, C. A. R. Herdeiro, E. Radu and K. Uzawa; JHEP 1901 (2019) 215, arXiv:1811.10844 [gr-qc].

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Regular Articles
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Can dark matter drive electroweak symmetry breaking?, Catarina Cosme, João G. Rosa, Orfeu Bertolami; arXiv:1811.08908 [hep-ph].

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Regular Articles
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Latest Cosmology News & Events

UV completions of effective models explaining B-physics anomalies

Speaker
Werner Porod (Wurzburg U., Germany)
Event date
Venue
Room Sousa Pinto (DM)
Ends on
Event type

In recent years several anomalies have been observed in decays of B-mesons. We give first a brief overview on the experimental situation. It is well know that these anomalies can be explained by adding leptoquarks or extra vector-bosons to the SM particle content.

Complementarity between gravitational waves and collider probes in extended Higgs sectors

Speaker
Maria Ramos (LIP - U. Minho)
Event date
Venue
GAP room
Event type

An extended scalar sector often emerges in models motivated by the electroweak hierarchy problem. In particular, a SM triplet is interesting because its decay is very constrained at the renormalizable level. Therefore, effective operators with a low cutoff make the triplet components decay promptly.