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

A convenient gauge for virial identities in axial symmetry, J. M. S. Oliveira, A. M. Pombo;     Phys. Lett. B 837 (2023) 137646; arXiv:2207.12451 [gr-qc].

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CDF II W-mass anomaly faces first-order electroweak phase transition, A. Addazi, A. Marciano, A. P. Morais, R. Pasechnik, H. Yang; Eur. Phys. J. C 83 (2023) 207; arXiv:2204.10315 [hep-ph].

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Gravitational-Wave Signatures of Chiral-Symmetric Technicolor, Hao Yang, Felipe F. Freitas, Antonino Marciano, António P. Morais, Roman Pasechnik, João Viana; Phys. Lett. B 830 (2022) 137162, arXiv:2204.00799 [hep-ph].

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Virial identities in relativistic gravity: 1D effective actions and the role of boundary terms, Carlos A. R. Herdeiro, João M. S. Oliveira, Alexandre M. Pombo, Eugen Radu; Phys. Rev. D 104 (2021) 104051, arXiv:2109.05027 [gr-qc].

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Impact of SM parameters and of the vacua of the Higgs potential in gravitational waves detection, Felipe F. Freitas, Gabriel Lourenço, António P. Morais, André Nunes, João Olívia, Roman Pasechnik, Rui Santos, João Viana; JCAP 03 (2022) 03, 046, arXiv:2108.12810 [hep-ph].

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Latest Cosmology News & Events

From Hubble to Bubble - gravitational waves from phase transitions after inflation

Gr@v Seminars - Banner
Speaker
Andreas Mantziris (University of Porto)
Event date
Venue
Hybrid: Sala Sousa Pinto and Zoom
Event type

The prospect of a stochastic gravitational wave (GW) background from the primordial universe offers a promising new window for cosmology and fundamental physics.

Signatures of domain wall networks: from gravitational waves to primordial black holes

Gr@v Seminars - Banner
Speaker
Ricardo Ferreira (University of Coimbra)
Event date
Venue
Hybrid: Sala Sousa Pinto and Zoom
Event type

The Domain Wall (DW) problem is the fact that DW networks that result from the spontaneous breaking of discrete symmetries tend to dominate the universe's energy budget.
However, if the symmetry is not exact the network annihilates and the problem turns into a virtue, as the network tends to be an abundant component before its collapse, and is thus easier to probe.