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pro vyhledávání: '"Bragança, Diogo"'
Autor:
Bragança, Diogo P. L.
In general relativity, there is a velocity dependent term in the gravitational acceleration of a test particle for an observer at infinity. Depending on the direction of motion and the speed, that term can be repulsive. We show that this is also the
Externí odkaz:
http://arxiv.org/abs/2402.18022
After the successful full-shape analyses of BOSS data using the Effective Field Theory of Large-Scale Structure, we investigate what upcoming galaxy surveys might achieve. We introduce a ``perturbativity prior" that ensures that loop terms are as lar
Externí odkaz:
http://arxiv.org/abs/2307.04992
Autor:
Bragança, Diogo P. L.
We build a self-consistent relativistic scalar theory of gravitation on a flat Minkowski spacetime from a general field Lagrangian. It is shown that, for parameters that satisfy the Equivalence Principle, this theory predicts the same outcome as gene
Externí odkaz:
http://arxiv.org/abs/2304.02027
We develop a new way to analytically calculate loop integrals in the Effective Field Theory of Large Scale-Structure. Previous available methods show severe limitations beyond the one-loop power spectrum due to analytical challenges and computational
Externí odkaz:
http://arxiv.org/abs/2212.07421
Autor:
Bragança, Diogo P. L., Lewandowski, Matthew, Sekera, David, Senatore, Leonardo, Sgier, Raphael
Upcoming Large-Scale Structure surveys will likely become the next leading sources of cosmological information, making it crucial to have a precise understanding of the influence of baryons on cosmological observables. The Effective Field Theory of L
Externí odkaz:
http://arxiv.org/abs/2010.02929
Publikováno v:
Eur. Phys. J. C 78:, 533 (2018)
We construct a general stratified scalar theory of gravitation from a field equation that accounts for the self-interaction of the field and a particle Lagrangian, and calculate its post-Newtonian parameters. Using this general framework, we analyze
Externí odkaz:
http://arxiv.org/abs/1807.00036
Autor:
Bragança, Diogo, Picken, Roger
Publikováno v:
Boletim da Sociedade Portuguesa de Matem\'atica 76, 159-176 (2018)
In this brief sequel to a previous article, we recall the notion of a cut cellular surface (CCS), being a surface with boundary, which is cut in a specified way to be represented in the plane, and is composed of 0-, 1- and 2-cells. We obtain invarian
Externí odkaz:
http://arxiv.org/abs/1710.02390
Autor:
Bragança, Diogo, Picken, Roger
Publikováno v:
Boletim da Sociedade Portuguesa de Matem\'atica, 74 (2016), p. 17
We introduce the notion of a cut cellular surface (CCS), being a surface with boundary, which is cut in a specified way to be represented in the plane, and is composed of 0-, 1- and 2-cells. We obtain invariants of CCS's under Pachner-like moves on t
Externí odkaz:
http://arxiv.org/abs/1512.08263
Akademický článek
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Autor:
Bragança, Diogo P L
Publikováno v:
Classical & Quantum Gravity; 7/6/2023, Vol. 40 Issue 13, p1-24, 24p
