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Almost maximal volume entropy rigidity for integral Ricci curvature in the non-collapsing case

Differential Geometry 2022-01-21 v1

Abstract

In this note we will show the almost maximal volume entropy rigidity for manifolds with lower integral Ricci curvature bound in the non-collapsing case: Given n,d,p>n2n, d, p>\frac{n}{2}, there exist δ(n,d,p),ϵ(n,d,p)>0\delta(n, d, p), \epsilon(n, d, p)>0, such that for δ<δ(n,d,p)\delta<\delta(n, d, p), ϵ<ϵ(n,d,p)\epsilon<\epsilon(n, d, p), if a compact nn-manifold MM satisfies that the integral Ricci curvature has lower bound kˉ(1,p)δ\bar k(-1, p)\leq \delta, the diameter diam(M)ddiam(M)\leq d and volume entropy h(M)n1ϵh(M)\geq n-1-\epsilon, then the universal cover of MM is Gromov-Hausdorff close to a hyperbolic space form Hk\Bbb H^k, knk\leq n; If in addition the volume of MM, vol(M)v>0vol(M)\geq v>0, then MM is diffeomorphic and Gromov-Hausdorff close to a hyperbolic manifold where δ,ϵ\delta, \epsilon also depends on vv.

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Cite

@article{arxiv.2201.08134,
  title  = {Almost maximal volume entropy rigidity for integral Ricci curvature in the non-collapsing case},
  author = {Lina Chen},
  journal= {arXiv preprint arXiv:2201.08134},
  year   = {2022}
}

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7 pages