Browsing by Author "Robles, P."

Now showing 1 - 5 of 5
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    Can repelling electrons form bound pairs
    (2022) Claro, F.; Robles, P.
    Electrons are elementary particles that repel each other due to their same electric charge. In certain cases however, the effect of quantum coherence in an appropriate environment may act to overcome this natural tendency, making electrons behave as if there was an attraction between them and form bound pairs that move as a unit. We discuss a simple case, where this unexpected binding is mediated by a rigid crystalline environment. The paper is addressed to students and teachers with an elementary knowledge of quantum, and solid state, physics.
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    Can there be massive photons? A pedagogical glance at the origin of mass
    (2012) Robles, P.; Claro, F.
    Among the most startling experiences a student encounters is learning that, unlike electrons and other elementary particles, photons have no mass. Under certain circumstances, however, the light quantum behaves as if it did have a finite mass. Starting from Maxwell's equations, we discuss how this arises when light interacts with a charged plasma, or travels along a waveguide. The motion of such photons is analysed using kinematic concepts of special relativity, and we show how a cutoff frequency for effective propagation appears. Seeing how an environment may yield an apparent dynamic mass to the photon paves the way for later understanding: might the Higgs boson field provide other particles, such as the electron, with a mass? This paper is addressed to mid-level physics students, teachers and lecturers, requiring only a knowledge of classical electromagnetic and special relativity theories.
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    Dynamical response of polarizable nanoparticles to a rotating electric field
    (2011) Robles, P.; Claro Huneeus, Francisco
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    Local Electric Field Enhancement Near Arrays of Polarizable Cylindrical Tubes
    (2005) Robles, P.; Claro Huneeus, Francisco
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    Optical Absorption for Parallel Cylinder Arrays
    (2002) Robles, P.; Claro Huneeus, Francisco