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- Universidade de São PauloBR234 papers
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9 papers · 1 filter
Exact solutions of Brans-Dicke cosmology and the cosmic coincidence problem
S. Carneiro, A. E. Montenegro
We present some cosmological solutions of Brans-Dicke theory, characterized by a decaying vacuum energy density and by a constant relative matter density. With these features, they…
Critical exponents for the long-range Ising chain using a transfer matrix approach
Roberto F. S. Andrade, Suani T. R. Pinho
The critical behavior of the Ising chain with long-range ferromagnetic interactions decaying with distance , , is investigated using a numerically efficient transfer ma…
On the volume of singular-hyperbolic sets
J. F. Alves, V. Araujo, M. J. Pacifico +1
An attractor for a 3-vector field is singular-hyperbolic if all its singularities are hyperbolic and it is partially hyperbolic with volume expanding central direction. We…
Neighborhood properties of complex networks
R. F. S. Andrade, J. G. V. Miranda, Thierry Petit Lobao
A concept of neighborhood in complex networks is addressed based on the criterion of the minimal number os steps to reach other vertices. This amounts to, starting from a given net…
The network of concepts in written texts
Silvia M. G. Caldeira, Thierry C. Petit Lobao, R. F. S. Andrade +2
Complex network theory is used to investigate the structure of meaningful concepts in written texts of individual authors. Networks have been constructed after a two phase filterin…
Philosophy Enters the Optics Laboratory: Bell's Theorem and its First Experimental Tests (1965-1982)
Olival Freire
This paper deals with the ways that the issue of completing quantum mechanics was brought into laboratories and became a topic in mainstream quantum optics. It focuses on the perio…