In a new Weyl 2-spinor approach to Non abelian Gauge Theories, starting with the local U(1) Gauge... more In a new Weyl 2-spinor approach to Non abelian Gauge Theories, starting with the local U(1) Gauge group of a previous work, we study now the SU(3) case corresponding to quarks (antiquarks) interacting with color fields. The principal difference with the conventional approach is that particle-field interactions are not described by means of potentials but by the field strength magnitudes. Some analytical expressions showing similarities with electrodynamics are obtained. Classical equations that describe the behavior of quarks under gluon fields might be in principle applied to the quark-gluon plasma phase existing during the first instants of the Universe.
We show that the electromagnetic field tensor and the Lorentz Force are both a natural consequenc... more We show that the electromagnetic field tensor and the Lorentz Force are both a natural consequence of the geometric structure of Minkowskian space, being related to infinitesimal boosts and rotations in spacetime. The longstanding issue about the apparent empirical origin of the Lorentz Force is clarified.
In this short report, we present the preliminary results of a new method developed for obtaining ... more In this short report, we present the preliminary results of a new method developed for obtaining the three dimensional distribution of interplane tary dust from observations performed in the Ecliptic (Earthbound or Satellite). This new approach is essentially based in the analytical trasformation of the Zodiacal Light Brightness Integral into a Volterra integral equation of the second kind and its subsequent numerical resolution. The implementation of this method requires a careful set of observations confined to a plane perpendicular to the ecliptic, passing through the Sun, and ranging from an elongation angle e = β = π (Gegenschein) to e = β = π/2 (Ecliptic Pole).
In the paper "Third-Order Perturbative Approach to Gravitational Instability: Evolution ... more In the paper "Third-Order Perturbative Approach to Gravitational Instability: Evolution of Isolated Structures and Environmental Effects" by L. J. Goicoechea and J. Buitrago (ApJ, 483, 541 [1997]), there is a typographical error in equations (4), (5), (8), and (21). In these equations, the volume integrals must include both numerator and denominator.
We present a generalization of the Poynting-Robertson effect to the general relativity, obtaining... more We present a generalization of the Poynting-Robertson effect to the general relativity, obtaining subsequently, in the Schwarzschild metric, the differential equations which describe the orbital evolution of a small spherical body under the combined action of radiation forces and gravitation.
In a new Weyl 2-spinor approach to Non abelian Gauge Theories, starting with the local U(1) Gauge... more In a new Weyl 2-spinor approach to Non abelian Gauge Theories, starting with the local U(1) Gauge group of a previous work, we study now the SU(3) case corresponding to quarks (antiquarks) interacting with color fields. The principal difference with the conventional approach is that particle-field interactions are not described by means of potentials but by the field strength magnitudes. Some analytical expressions showing similarities with electrodynamics are obtained. Classical equations that describe the behavior of quarks under gluon fields might be in principle applied to the quark-gluon plasma phase existing during the first instants of the Universe.
We show that the electromagnetic field tensor and the Lorentz Force are both a natural consequenc... more We show that the electromagnetic field tensor and the Lorentz Force are both a natural consequence of the geometric structure of Minkowskian space, being related to infinitesimal boosts and rotations in spacetime. The longstanding issue about the apparent empirical origin of the Lorentz Force is clarified.
In this short report, we present the preliminary results of a new method developed for obtaining ... more In this short report, we present the preliminary results of a new method developed for obtaining the three dimensional distribution of interplane tary dust from observations performed in the Ecliptic (Earthbound or Satellite). This new approach is essentially based in the analytical trasformation of the Zodiacal Light Brightness Integral into a Volterra integral equation of the second kind and its subsequent numerical resolution. The implementation of this method requires a careful set of observations confined to a plane perpendicular to the ecliptic, passing through the Sun, and ranging from an elongation angle e = β = π (Gegenschein) to e = β = π/2 (Ecliptic Pole).
In the paper "Third-Order Perturbative Approach to Gravitational Instability: Evolution ... more In the paper "Third-Order Perturbative Approach to Gravitational Instability: Evolution of Isolated Structures and Environmental Effects" by L. J. Goicoechea and J. Buitrago (ApJ, 483, 541 [1997]), there is a typographical error in equations (4), (5), (8), and (21). In these equations, the volume integrals must include both numerator and denominator.
We present a generalization of the Poynting-Robertson effect to the general relativity, obtaining... more We present a generalization of the Poynting-Robertson effect to the general relativity, obtaining subsequently, in the Schwarzschild metric, the differential equations which describe the orbital evolution of a small spherical body under the combined action of radiation forces and gravitation.
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Papers by J. Buitrago