2k citations · 12k across the 281 of their papers we have counts for
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Cosmic Transients, Einstein's Equivalence Principle and Dark Matter Halos
Orfeu Bertolami, Ricardo G. Landim
Cosmic transients, such as gamma-ray bursts and fast radio bursts, have been used to constrain the Einstein's Equivalence Principle (EEP) through the parametrized-post-Newtonian (P…
Quantum to classical transition in the Hořava-Lifshitz quantum cosmology
Alex E. Bernardini, Pedro Leal, Orfeu Bertolami
A quasi-Gaussian quantum superposition of Hořava-Lifshitz (HL) stationary states is built in order to describe the transition of the quantum cosmological problem to the related cla…
Quantum information aspects of noncommutative quantum mechanics
Orfeu Bertolami, Alex E. Bernardini, Pedro Leal
Some fundamental aspects related with the construction of Robertson-Schrödinger like uncertainty principle inequalities are reported in order to provide an overall description of q…
Collapsing Shells and Black Holes: a quantum analysis
P. Leal, A. E. Bernardini, O. Bertolami
The quantization of a spherically symmetric null shells is performed and extended to the framework of phase-space noncommutative (NC) quantum mechanics. The encountered properties…
Non-classicality from the phase-space flow analysis of the Weyl-Wigner quantum mechanics
Alex E. Bernardini, Orfeu Bertolami
A fluid analog of the information flux in the phase-space associated to purity and von Neumann entropy are identified in the Weyl-Wigner formalism of quantum mechanics. Once constr…
Scalar field dark matter with spontaneous symmetry breaking and the keV line
Catarina Cosme, João G. Rosa, O. Bertolami
We show that the present dark matter abundance can be accounted for by an oscillating scalar field that acquires both mass and a non-zero expectation value from interactions with t…
Gravitational waves in theories with a non-minimal curvature-matter coupling
Orfeu Bertolami, Cláudio Gomes, Francisco S. N. Lobo
Gravitational waves in the presence of a non-minimal curvature-matter coupling are analysed, both in the Newman-Penrose and perturbation theory formalisms. Considering a cosmologic…
Neutron Stars, Ungravity, and the I-Love-Q relation
Hodjat Mariji, Orfeu Bertolami
In this work, we study neutron stars (NSs) in an ungravity (UG) inspired model. We examine the UG effects on the static properties of the selected NSs, in different mass and radius…
Using a non-minimal coupling between matter and curvature to sequester the Cosmological Constant
Orfeu Bertolami, Jorge Páramos
We present a novel mechanism for generating a Cosmological Constant and suitably sequestering the vacuum contribution to it, so that the eponymous Cosmological Constant problem is…
Estimating the thermally induced acceleration of the New Horizons spacecraft
André G. C. Guerra, Frederico Francisco, Paulo J. S. Gil +1
Residual accelerations due to thermal effects are estimated through a model of the New Horizons spacecraft and a Monte Carlo simulation. We also discuss and estimate the thermal ef…