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A minimising movement scheme for the p-elastic energy of curves
Simon Blatt1, Christopher P Hopper1, Nicole Vorderobermeier1
1Departement of Mathematics, Paris Lodron Universität Salzburg, Hellbrunner Strasse 34, 5020 Salzburg, Austria.
Abstract:
We prove short-time existence for the negative -gradient flow of the p-elastic energy of curves via a minimising movement scheme. In order to account for the degeneracy caused by the energy's invariance under curve reparametrisations, we write the evolving curves as approximate normal graphs over a fixed smooth curve. This enables us to establish short-time existence and give a lower bound on the solution's lifetime that depends only on the -Sobolev norm of the initial data.
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