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  • Publication . Doctoral thesis . 2018
    Open Access English
    Authors: 
    Puertas-Centeno, David;
    Publisher: Universidad de Granada
    Country: Spain

    This work has been partially supported by the Projects FQM-7276 and FQM-207 of the Junta de Andalucía and the MINECO (Ministerio de Economia y Competitividad)-FEDER (European Regional Development Fund) grants FIS2014- 54497P and FIS2014-59311-P. I. V. Toranzo acknowledg...

  • Open Access
    Authors: 
    Niurka R. Quintero; Jesús Casado-Pascual; Renato Alvarez-Nodarse; José A. Cuesta;
    Publisher: Multidisciplinary Digital Publishing Institute (MDPI)
    Country: Spain

    Ministerio de Economía, Industria y Competitividad FIS2014-54497-P, MTM2015-65888-C4-1-P

  • Open Access
    Authors: 
    Franz G. Mertens; Fred Cooper; Niurka R. Quintero; Sihong Shao; Avinash Khare; Avadh Saxena;
    Publisher: IOP

    We consider the nonlinear Dirac (NLD) equation in 1+1 dimension with scalar-scalar selfinteraction in the presence of external forces as well as damping of the form f (x, t) - ιμγͦψ, where both f and ψ are two-component spinors. We develop an approximate variational app...

  • Open Access
    Authors: 
    Franz G. Mertens; Avinash Khare; Niurka R. Quintero; Frederick Cooper; Avadh Saxena;
    Publisher: American Physical Society (APS)
    Country: Spain

    U.S. Department of Energy. F.G.M. acknowledges the hospitality of the Mathematical Institute of the University of Seville (IMUS) Theoretical Division and Center for Nonlinear Studies at Los Alamos National Laboratory Plan Propio of the University of Seville and by Junta...

  • Open Access
    Authors: 
    Bernardo Sánchez-Rey; Jesús Casado-Pascual; Niurka R. Quintero;
    Publisher: American Physical Society (APS)
    Country: Spain

    The ratchet effect of a sine-Gordon kink is investigated in the absence of any external force while the symmetry of the field potential at every time instant is maintained. The directed motion appears by a time shift of the sine-Gordon potential through a time-dependent...

  • Open Access English
    Authors: 
    Niurka R. Quintero; Franz G. Mertens; Anatoly Efimov; Alan R. Bishop;
    Publisher: American Physical Society
    Country: Spain

    The generalized traveling wave method (GTWM) is applied to the nonlinear Schrödinger (NLS) equation with general perturbations in order to obtain the equations of motion for an ansatz with six collective coordinates, namely the soliton position, the amplitude, the inver...

  • Open Access English
    Authors: 
    Steeve Zozor; D. Puertas-Centeno; Jesús S. Dehesa;
    Publisher: HAL CCSD
    Countries: France, Spain

    Information-theoretic inequalities play a fundamental role in numerous scientific and technological areas (e.g., estimation and communication theories, signal and information processing, quantum physics, …) as they generally express the impossibility to have a complete ...