On the large-scale geometry of the L^p-metric on the symplectomorphism group of the two-sphere

Abstract

We prove that the vector space R^d of any finite dimension d with the standard metric embeds in a bi-Lipschitz way into the group of area-preserving diffeomorphisms G of the two-sphere endowed with the L^p-metric for p>2. Along the way we show that the L^p-metric on the group G is unbounded for p>2 by elementary methods.

17 pages, 1 figure; a revised manuscript correcting a mistake in the original version, the main result holds for p>2