Author:
Glogić Irfan,Maliborski Maciej,Schörkhuber Birgit
Abstract
Abstract
We consider the focusing cubic wave equation in the energy supercritical case, i.e. in dimensions
. For this model an explicit nontrivial self-similar blowup solution was recently found by the first and third author in Glogić and Schörkhuber (2018 (arXiv:1810.07681)). Furthermore, the solution is proven to be co-dimension one stable in d = 7. In this paper, we study the equation from a numerical point of view. For d = 5 and d = 7 in the radial case, we provide evidence that this solution is at the threshold between generic ODE blowup and dispersion. In addition, we investigate the spectral problem that underlies the stability analysis and compute the spectrum in general supercritical dimensions.
Funder
Austrian Science Fund
Deutsche Forschungsgemeinschaft
Subject
Applied Mathematics,General Physics and Astronomy,Mathematical Physics,Statistical and Nonlinear Physics
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