24 citations · 83 across the 11 of their papers we have counts for
11 papers
Matching the Alcubierre and Minkowski spacetimes
Osvaldo L. Santos-Pereira, Everton M. C. Abreu, Marcelo B. Ribeiro
This work analyzes the Darmois junction conditions matching an interior Alcubierre warp drive spacetime to an exterior Minkowski geometry. The joining hypersurface requires that th…
Roullete curves, coin paradox and Aristotle's wheel paradox
Osvaldo L. Santos-Pereira
This work discusses the concept of roulette, the generated curves that occur when one curve rolls without slipping along another, tracing the path of a fixed point. The coin parado…
Shift vector sign reversal in the Alcubierre warp drive spacetime geometry and nonlinear Burgers-type dynamics
Osvaldo L. Santos-Pereira, Everton M. C. Abreu, Marcelo B. Ribeiro
This work investigates a sign reversal of the shift vector in the Alcubierre Warp Drive geometry and its effect on the nonlinear reduced structure of the Einstein equations. Previo…
The Warp Drive: Superluminal Travel within General Relativity
Osvaldo L. Santos-Pereira
In 1994, Miguel Alcubierre proposed that the well-known special relativistic limitation that particles cannot travel with velocities higher than light speed can be bypassed when su…
Experimental Physics Laboratory 2: Calculating the Value of Water Density using Metal Rod and Water Container
Osvaldo L. Santos-Pereira
This article presents a detailed analysis of an undergraduate physics laboratory experiment designed to determine the density of water using fundamental measurement techniques and…
Galaxy Mergers in a Fractal Cosmology
Bruno J. Souza, Osvaldo L. Santos-Pereira, Marcelo B. Ribeiro
This work discusses the influence of galaxy mergers in the evolution of a parabolic Lema\^ıtre-Tolman-Bondi (LTB) cosmology with simultaneous big bang endowed with two consecutive…