Abstract:A new phenomenon of the chimera states cloning in a large two-layer multiplex network with short-term couplings has been discovered and studied. For certain values of strength and time of multiplex interaction, in the initially disordered layer, a state of chimera is formed with the same characteristics (the same average frequency and amplitude distributions in coherent and incoherent parts, as well as an identical phase distribution in coherent part), as in the chimera which was set in the other layer. The me… Show more
“…Recently, a prominent line of research emerged which studies chimera states in multilayer networks [42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57]. Multilayer networks are important modelling tools for complex systems such as transportation networks, social interactions and the brain [58,59].…”
Section: Introductionmentioning
confidence: 99%
“…In Ref. [56] the authors showed that it is possible to clone a chimera states from one layer to another of a multiplex network even when the coupling is active only for a short time. For a two-layer network of oscillatory FitzHugh-Nagumo units, a control strategy based on weak multiplexing was developed allowing to induce or suppress chimera states [52].…”
Networks of coupled nonlinear oscillators allow for the formation of nontrivial partially synchronized spatiotemporal patterns, such as chimera states, in which there are coexisting coherent (synchronized) and incoherent (desynchronized) domains. These complementary domains form spontaneously and it is impossible to predict where the synchronized group will be positioned within the network. Therefore, possible ways to control the spatial position of the coherent and incoherent groups forming the chimera states are of high current interest. In this work we investigate how to control chimera patterns in multiplex networks of FitzHugh-Nagumo neurons, and in particular we want to prove that it is possible to remotely control chimera states exploiting the multiplex structure. We introduce a pacemaker oscillator within the network: this is an oscillator that does not receive input from the rest of the network but is sending out information to its neighbours. The pacemakers can be positioned in one or both layers. Their presence breaks the spatial symmetry of the layer in which they are introduced and allows us to control the position of the incoherent domain. We demonstrate how the remote control is possible for both uni-and bidirectional coupling between the layers. Furthermore we show which are the limitations of our control mechanisms when it is generalized from single layer to multilayer networks.
“…Recently, a prominent line of research emerged which studies chimera states in multilayer networks [42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57]. Multilayer networks are important modelling tools for complex systems such as transportation networks, social interactions and the brain [58,59].…”
Section: Introductionmentioning
confidence: 99%
“…In Ref. [56] the authors showed that it is possible to clone a chimera states from one layer to another of a multiplex network even when the coupling is active only for a short time. For a two-layer network of oscillatory FitzHugh-Nagumo units, a control strategy based on weak multiplexing was developed allowing to induce or suppress chimera states [52].…”
Networks of coupled nonlinear oscillators allow for the formation of nontrivial partially synchronized spatiotemporal patterns, such as chimera states, in which there are coexisting coherent (synchronized) and incoherent (desynchronized) domains. These complementary domains form spontaneously and it is impossible to predict where the synchronized group will be positioned within the network. Therefore, possible ways to control the spatial position of the coherent and incoherent groups forming the chimera states are of high current interest. In this work we investigate how to control chimera patterns in multiplex networks of FitzHugh-Nagumo neurons, and in particular we want to prove that it is possible to remotely control chimera states exploiting the multiplex structure. We introduce a pacemaker oscillator within the network: this is an oscillator that does not receive input from the rest of the network but is sending out information to its neighbours. The pacemakers can be positioned in one or both layers. Their presence breaks the spatial symmetry of the layer in which they are introduced and allows us to control the position of the incoherent domain. We demonstrate how the remote control is possible for both uni-and bidirectional coupling between the layers. Furthermore we show which are the limitations of our control mechanisms when it is generalized from single layer to multilayer networks.
“…The observation of amplitude chimera states against the conventional phase chimera is also a notable advance in the field preceded by the identification of imperfect amplitude chimera due to attractive and repulsive interactions in a non-locally coupled Stuart Landau oscillators [17,18]. At the frontier one can see the extension of network topology to multilayer and multiplex networks for understanding chimera states [19][20][21]. Practical application of chimera states are demonstrated in the laboratory in the last decade apart from the theoretical and numerical analysis [22][23][24].…”
We have investigated synchronized pattern in a network of Thomas oscillators coupled with sinusoidal nonlinear coupling. Pattern like chimera states are not only observed for many non-locally coupled oscillators but there is a signature of it even for locally coupled few oscillators. For certain range of intermediate coupling, clusters are also observed. These patterns do resemble with motion of real self propelled coupled dynamical systems.
“…Эти эффекты типичны для биологических объектов и нейронных сетей мозга [16,17]. Недавно [18,19] был обнаружен и изучен новый эффект -клонирование химерных состояний, возникающий при объединении в мультиплексную систему двух кольцевых ансамблей линейно локально связанных бистабильных осцилляторов. Численно было показано, что при определенных зна-чениях силы и времени межкольцевого взаимодействия в кольце с изначально беспорядочным распределением фаз формируется копия химерного состояния, наблюдаемого в другом кольце, с точностью до значений фаз в некогерентной части.…”
unclassified
“…Численно было показано, что при определенных зна-чениях силы и времени межкольцевого взаимодействия в кольце с изначально беспорядочным распределением фаз формируется копия химерного состояния, наблюдаемого в другом кольце, с точностью до значений фаз в некогерентной части. В основе эффекта лежит конкурентная динамика пар осцилляторов из разных слоев мультиплексной системы [18,19].…”