Analysis shows evidence of bifurcation in two-dimensional shear flows and repulsive systems, implying broader applicability.
We investigate the universality in collisionless nonlinear dynamics of a codimension-two bifurcation where two eigenvalues collide at the origin, and two lines of continuous bifurcation and discontinuous jump meet. Through linear analysis and direct numerical simulations, we show that this bifurcation does occur, both for two-dimensional shear flows and for repulsive systems mimicking plasmas.
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Yamaguchi et al. (2025) studied this question.
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