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The AEROS ocean observation mission and its CubeSat pathfinder
Rute Santos, Orfeu Bertolami, E. Castanho +21
AEROS aims to develop a nanosatellite as a precursor of a future system of systems, which will include assets and capabilities of both new and existing platforms operating in the O…
From the Stochastic Weather to a Putative Chaotic Earth System
Orfeu Bertolami
In this brief report we discuss how continuous changes on the physical parameters that determine the weather conditions may lead to long term climate variability. This variability…
Quantum prey-predator dynamics: a gaussian ensemble analysis
Alex E. Bernardini, Orfeu Bertolami
Quantum frameworks for modeling competitive ecological systems and self-organizing structures have been investigated under multiple perspectives yielded by quantum mechanics. These…
The Physics of Time: Current Knowledge and Unanswered Challenges
Orfeu Bertolami
In contemporary physics space and time are intertwined entities so that kinematical and dynamical quantities are expressed in the four-dimensional space-time. This formulation seem…
Emergent time crystals from phase-space noncommutative quantum mechanics
Alex E. Bernardini, Orfeu Bertolami
It has been argued that the existence of time crystals requires a spontaneous breakdown of the continuous time translation symmetry so to account for the unexpected non-stationary…
Non-commutative phase-space Lotka-Volterra dynamics: the quantum analogue
Alex E. Bernardini, Orfeu Bertolami
The Lotka-Volterra (LV) dynamics is investigated in the framework of the Weyl-Wigner (WW) quantum mechanics (QM) extended to one-dimensional Hamiltonian systems, $\mathcal{H}(x,\,k…
Primordial magnetic fields in theories of gravity with non-minimal coupling between curvature and matter
Orfeu Bertolami, Maria Margarida Lima, Filipe C. Mena
The existence of magnetic fields in the universe is unmistakable. They are observed at all scales from stars to galaxy clusters. However, the origin of these fields remains enigmat…
Multi-field cold and warm inflation and the de Sitter swampland conjectures
Orfeu Bertolami, Paulo M. Sá
We discuss under which conditions multi-field cold and warm inflationary models with canonical kinetic energy terms are compatible with the swampland conjectures about the emergenc…
Chaotic Behaviour of the Earth System in the Anthropocene
Alex E. Bernardini, Orfeu Bertolami, Frederico Francisco
It is shown that the Earth System (ES) can, due to the impact of human activities, exhibit chaotic behaviour. Our arguments are based on the assumption that the ES can be described…
Generalized phase-space description of non-linear Hamiltonian systems and the Harper-like dynamics
Alex E. Bernardini, Orfeu Bertolami
Phase-space features of the Wigner flow for generic one-dimensional systems with a Hamiltonian, , constrained by the c…