Enviaments recents

  • Consistency of heterogeneous synchronization patterns in complex weighted networks 

    Malagarriga Guasch, Daniel; Villa, Alessandro; García Ojalvo, Jordi; Pons Rivero, Antonio Javier (Institute of Physics (IOP), 2017-03-10)
    Article
    Accés obert
    Synchronization within the dynamical nodes of a complex network is usually considered homogeneous through all the nodes. Here we show, in contrast, that subsets of interacting oscillators may synchronize in different ways ...
  • Locally parity-time-symmetric and globally parity-symmetric systems 

    Ahmed Waseem, Waqas Waseem; Herrero Simon, Ramon; Botey Cumella, Muriel; Staliunas, Kestutis (2016-11-11)
    Article
    Accés obert
    We introduce a class of systems holding parity-time (PT) symmetry locally, whereas being globally P symmetric. The potential, U = U(vertical bar r vertical bar), fulfills PT symmetry with respect to periodically distributed ...
  • Linear and Nonlinear Bullets of the Bogoliubov-de Gennes Excitations 

    Kumar, Shubham; Perego, A.M.; Staliunas, Kestutis (2017-01-27)
    Article
    Accés obert
    We report on the focalization of Bogoliubov–de Gennes excitations of the nonlinear Schrödinger equation in the defocusing regime (Gross-Pitaevskii equation for repulsive Bose-Einstein condensates) with a spatially modulated ...
  • Two-dimensional domain structures in Lithium Niobate via domain inversion with ultrafast light 

    Chen, Xin; Karpinski, Pawel; Shvedov, Vladlen; Wang, Bingxia; Trull Silvestre, José Francisco; Cojocaru, Crina; Boes, A.; Mitchell, A.; Krolikowski, Wieslaw; Sheng, Yan (2016)
    Article
    Accés obert
    Periodic inversion of ferroelectric domains is realized in a lithium niobate crystal by focused femtosecond near-infrared laser beam. One and two-dimensional domain patterns are fabricated. Quasi-phase matched frequency ...
  • Mode-locking via dissipative Faraday instability 

    Tarasov, N.; Perego, A.M.; Churkin, D.V.; Staliunas, Kestutis; Turitsyn, S.K. (2016-08-09)
    Article
    Accés obert
    Emergence of coherent structures and patterns at the nonlinear stage of modulation instability of a uniform state is an inherent feature of many biological, physical and engineering systems. There are several well-studied ...
  • Emergence of spike correlations in periodically forced excitable systems 

    Reinoso, Jose A.; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2016-09-27)
    Article
    Accés obert
  • Global atmospheric dynamics investigated by using Hilbert frequency analysis 

    Zappala, Dario; Barreiro, Marcelo; Masoller Alonso, Cristina (2016-11-16)
    Article
    Accés obert
    The Hilbert transform is a well-known tool of time series analysis that has been widely used to investigate oscillatory signals that resemble a noisy periodic oscillation, because it allows instantaneous phase and frequency ...
  • Unravelling the community structure of the climate system by using lags and symbolic time-series analysis 

    Tirabassi, Giulio; Masoller Alonso, Cristina (Macmillan Publishers, 2016-07-11)
    Article
    Accés obert
    Many natural systems can be represented by complex networks of dynamical units with modular structure in the form of communities of densely interconnected nodes. Unraveling this community structure from observed data ...
  • Unveiling temporal correlations characteristic to phase transition in the output intensity of a fiber laser 

    Aragoneses, Andrés; Carpi, Laura; Tarasov, N.; Churkin, D.V.; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina; Turitsyn, S.K. (2016-01-22)
    Article
    Accés obert
    We use advanced statistical tools of time-series analysis to characterize the dynamical complexity of the transition to optical wave turbulence in a fiber laser. Ordinal analysis and the horizontal visibility graph applied ...
  • Formation of high-order acoustic Bessel beams by spiral diffraction gratings 

    Jimenez, Noe; Pico Vila, Rubén; Sánchez Morcillo, Victor José; Romero García, Vicenç; Garcia Raffi, Luis Miguel; Staliunas, Kestutis (2016-11-23)
    Article
    Accés obert
    The formation of high-order Bessel beams by a passive acoustic device consisting of an Archimedes' spiral diffraction grating is theoretically, numerically, and experimentally reported in this paper. These beams are ...

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