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].

Publication type
Regular Articles
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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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Regular Articles
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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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Regular Articles
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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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Regular Articles
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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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Regular Articles
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See Cosmology publications

Latest Cosmology News & Events

Complex structures of boson stars and anisotropic distribution of satellite galaxies

GGD - Gr@V Seminar
Speaker
Víctor Jaramillo (University of Science and Technology of China)
Event date
Venue
On-site: Sala Sousa Pinto
Event Website
https://videoconf-colibri.zoom.us/j/95541308539?pwd=GXnfP6VYVU82NHwP3ZEevFxw3si…
Event type
Seminars

We construct and explore Noether charge-swapping structures of boson stars, drawing inspiration from similar configurations of non-topological solitons in Minkowski space (Charge-swapping Q-balls). The resulting structures are dynamic, with a multipolar structure and both positive and negative Noether charges within a star.

Strong Gravity
Cosmology
Astrophysics

12 million CPU-hours awarded to our group

grants
A computing proposal prepared by S. Gimeno-Soler, P. Cunha, I. Sengo and C. Herdeiro, and led by H. Olivares was awarded with 12 million CPU-hours at the supercomputer Mare Nostrum 5.
The project, titled "Exploring accretion and spacetime models for event-horizon-scale observations of low-luminosity active galactic nuclei", will explore new models of accretion flows and spacetime geometries for the targets of the Event Horizon Telescope using simulations as the one shown in the picture (Image credit: H. Olivares and P. Cunha).
Strong Gravity
Cosmology
High Energy Physics
Astrophysics
See Cosmology News & Events