ELFT HÍRADÓ

[StatFizSzeminar <statfiz AT glu.elte.hu>]

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                   ELTE Institute of Physics
                SEMINARS IN STATISTICAL PHYSICS


                      The FIRST lecture on
                         22nd June 2016


                       Wednesday, 11 a.m.
                           Room 7.14
                      (on the 7th floor!)

                        Ibere L. Caldas

    Institute of Physics, University of Sao Paulo, SP, Brazil

         "Shearless Barriers in Chaotic Symplectic Maps"


Initially, we introduce shearless transport barriers created in nonmonotonic
dynamical systems described by symplectic maps [1]. These barriers reduce the
transport in the shearless region. After that we show that secondary shearless
bifurcations can also occur in monotonic systems [2]. To show the presence of
these barriers in confined plasmas, we present examples of two kinds of
symplectic maps: the first kind describing the chaotic magnetic field line
transport in plasmas with external resonant perturbations [3]; the second kind
concerning the chaotic particle drift motion caused by electrostatic waves 
[3].

References
[1] I. L. Caldas, R. L. Viana, J. D. Szezech, J. S. Portela, J. C. Fonseca. 
Communications in Nonlinear Science and Nonlinear Simulations 17, 2021 (2012).
[2] C. V. Abud and I. L. Caldas. Nuclear Fusion 54, 064010 (2014).
[3] I. L. Caldas et al., Plasma Physics and Controlled Fusion 54, 124035 
(2012).


        1117, Budapest, Pázmány P. sétány 1/A (Északi tömb)
              home page: http://glu.elte.hu/~statfiz


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