Search Results - "Leite, A C O"

Fundamental cosmology from precision spectroscopy: Varying couplings by Leite, A. C. O., Martins, C. J. A. P., Pedrosa, P. O. J., Nunes, N. J.

“…The observational evidence for the acceleration of the Universe demonstrates that canonical theories of cosmology and particle physics are incomplete, if not…”
Get full text

Forecasts of redshift drift constraints on cosmological parameters by Alves, C S, Leite, A C O, Martins, C J A P, Matos, J G B, Silva, T A

“…ABSTRACT Cosmological observations usually map our present-day past light cone. However, it is also possible to compare different past light cones. This is the…”
Get full text

Variation of fundamental parameters and dark energy: A principal component approach by Amendola, L., Leite, A. C. O., Martins, C. J. A. P., Nunes, N. J., Pedrosa, P. O. J., Seganti, A.

“…We discuss methods based on principal component analysis to constrain the dark energy equation of state using a combination of Type la supernovae at low…”
Get full text

Fundamental cosmology from precision spectroscopy. II. Synergies with supernovae by Leite, A. C. O., Martins, C. J. A. P.

“…In a previous work [Amendola et al., Phys. Rev. D 86, 063515 (2012)], principal component analysis based methods to constrain the dark energy equation of state…”
Get full text

Fundamental physics with ESPRESSO: Constraints on Bekenstein and dark energy models from astrophysical and local probes by Martins, C. J. A. P, Cristiani, S, Cupani, G, D'Odorico, V, Santos, R. Génova, Leite, A. C. O, Marques, C. M. J, Milaković, D, Molaro, P, Murphy, Michael T, Nunes, N. J, Schmidt, Tobias M, Adibekyan, V, Alibert, Y, Di Marcantonio, Paolo, Hernández, J. I. González, Mégevand, D, Palle, E, Pepe, F. A, Santos, N. C, Sousa, S. G, Sozzetti, A, Mascareño, A. Suárez, Osorio, M. R. Zapatero

“…Dynamical scalar fields in an effective four-dimensional field theory are naturally expected to couple to the rest of the theory's degrees of freedom, unless…”
Get full text

Forecasts of redshift drift constraints on cosmological parameters by Alves, C. S, Leite, A. C. O, Martins, C. J. A. P, Matos, J. G. B, Silva, T. A

“…Cosmological observations usually map our present-day past light cone. However, it is also possible to compare different past light cones. This is the concept…”
Get full text

Current and future constraints on Bekenstein-type models for varying couplings by Leite, A. C. O, Martins, C. J. A. P

“…Phys. Rev. D 94 (2016) 023503 Astrophysical tests of the stability of dimensionless fundamental couplings, such as the fine-structure constant $\alpha$ and the…”
Get full text

Dark energy constraints from ESPRESSO tests of the stability of fundamental couplings by Leite, A. C. O, Martins, C. J. A. P, Molaro, P, Corre, D, Cristiani, S

“…Phys. Rev. D 94 (2016) 123512 ESPRESSO is a high-resolution-ultra-stable spectrograph for the VLT, whose commissioning will start in 2017. One of its key…”
Get full text

Fisher matrix forecasts for astrophysical tests of the stability of the fine-structure constant by Alves, C. S, Silva, T. A, Martins, C. J. A. P, Leite, A. C. O

“…We use Fisher Matrix analysis techniques to forecast the cosmological impact of astrophysical tests of the stability of the fine-structure constant to be…”
Get full text

Fundamental Cosmology from Precision Spectroscopy: II. Synergies with supernovae by Leite, A. C. O, Martins, C. J. A. P

“…Phys. Rev. D91, 103519 (2015) In previous work [Amendola {\it et al.}, Phys. Rev. D86 (2012) 063515], Principal Component Analysis based methods to constrain…”
Get full text

Current and future constraints on extended Bekenstein-type models for a varying fine-structure constant by Alves, C. S, Leite, A. C. O, Martins, C. J. A. P, Silva, T. A, Berge, S. A, Silva, B. S. A

“…Phys. Rev. D97 (2018) 023522 There is a growing interest in astrophysical tests of the stability of dimensionless fundamental couplings, such as the…”
Get full text

Fisher matrix forecasts for astrophysical tests of the stability of the fine-structure constant by Alves, C.S., Silva, T.A., Martins, C.J.A.P., Leite, A.C.O.

“…We use Fisher Matrix analysis techniques to forecast the cosmological impact of astrophysical tests of the stability of the fine-structure constant to be…”
Get full text

Fundamental Cosmology from Precision Spectroscopy: I. Varying Couplings by Leite, A. C. O, Martins, C. J. A. P, Pedrosa, P. O. J, Nunes, N. J

“…The observational evidence for the acceleration of the universe demonstrates that canonical theories of cosmology and particle physics are incomplete, if not…”
Get full text

Variation of fundamental parameters and dark energy. A principal component approach by Amendola, L, Leite, A. C. O, Martins, C. J. A. P, Nunes, N. J, Pedrosa, P. O. J, Seganti, A

“…We discuss methods based on Principal Component Analysis to constrain the dark energy equation of state using a combination of Type Ia supernovae at low…”
Get full text

Fundamental physics constraints from testing the stability of the fine-structure constant with the ELTs by Leite, A. C. O, Martins, C. J. A. P, Molaro, P, Alves, C. S, Silva, T. A

“…The increased collecting area of the ELTs will bring fainter high-z targets within the reach of high-resolution ultra-stable spectrographs, thus enabling a new…”
Get full text

ESPRESSO's Early Commissioning Results and Performance Related to Tests of Fundamental Constant Stability by Leite, A. C. O, Martins, C. J. A. P, Molaro, P, Monai, S, Alves, C. S, Silva, T. A, Team, the ESPRESSO Science

“…ESPRESSO is a new high-resolution ultra-stable spectrograph for the VLT, which had its first light on Telescope on November 27th, 2017. The instrument is…”
Get full text

Observational strategies for varying constants with ESPRESSO and ELT-HIRES by Pedrosa, P. O. J, Leite, A. C. O, Martins, C. J. A. P

“…The observational evidence for the acceleration of the universe demonstrates that canonical theories of cosmology and particle physics are incomplete, if not…”
Get full text

Fundamental Cosmology in the E-ELT Era by Martins, C. J. A. P, Ferreira, M. C, Julião, M. D, Leite, A. C. O, Monteiro, A. M. R. V. L, Pedrosa, P. O. J, Vielzeuf, P. E

“…The recent observational evidence for the acceleration of the universe demonstrates that canonical theories of cosmology and particle physics are incomplete -…”
Get full text