Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter November 12, 2021

Nonnegative Ricci curvature and escape rate gap

  • Jiayin Pan EMAIL logo

Abstract

Let M be an open n-manifold of nonnegative Ricci curvature and let pM. We show that if (M,p) has escape rate less than some positive constant ϵ(n), that is, minimal representing geodesic loops of π1(M,p) escape from any bounded balls at a small linear rate with respect to their lengths, then π1(M,p) is virtually abelian. This generalizes the author’s previous work [J. Pan, On the escape rate of geodesic loops in an open manifold with nonnegative Ricci curvature, Geom. Topol. 25 2021, 2, 1059–1085], where the zero escape rate is considered.

Funding statement: The author was partially supported by AMS Simons travel grant when preparing this work.

References

[1] J. Cheeger and T. H. Colding, Lower bounds on Ricci curvature and the almost rigidity of warped products, Ann. of Math. (2) 144 (1996), no. 1, 189–237. 10.2307/2118589Search in Google Scholar

[2] J. Cheeger and T. H. Colding, On the structure of spaces with Ricci curvature bounded below. II, J. Differential Geom. 54 (2000), no. 1, 13–35. 10.4310/jdg/1214342145Search in Google Scholar

[3] J. Cheeger and D. Gromoll, The splitting theorem for manifolds of nonnegative Ricci curvature, J. Differential Geom. 6 (1971/72), 119–128. 10.4310/jdg/1214430220Search in Google Scholar

[4] J. Cheeger and D. Gromoll, On the structure of complete manifolds of nonnegative curvature, Ann. of Math. (2) 96 (1972), 413–443. 10.2307/1970819Search in Google Scholar

[5] T. H. Colding and A. Naber, Sharp Hölder continuity of tangent cones for spaces with a lower Ricci curvature bound and applications, Ann. of Math. (2) 176 (2012), no. 2, 1173–1229. 10.4007/annals.2012.176.2.10Search in Google Scholar

[6] K. Fukaya and T. Yamaguchi, The fundamental groups of almost non-negatively curved manifolds, Ann. of Math. (2) 136 (1992), no. 2, 253–333. 10.2307/2946606Search in Google Scholar

[7] M. Gromov, Groups of polynomial growth and expanding maps, Publ. Math. Inst. Hautes Études Sci. 53 (1981), 53–73. 10.1007/BF02698687Search in Google Scholar

[8] V. Kapovitch and B. Wilking, Structure of fundamental groups of manifolds of Ricci curvature bounded below, preprint (2011), https://arxiv.org/abs/1105.5955. Search in Google Scholar

[9] J. Milnor, A note on curvature and fundamental group, J. Differential Geom. 2 (1968), 1–7. 10.4310/jdg/1214501132Search in Google Scholar

[10] J. Pan, Nonnegative Ricci curvature, almost stability at infinity, and structure generation of fundamental groups, preprint (2018), https://arxiv.org/abs/1809.10220. Search in Google Scholar

[11] J. Pan, Nonnegative Ricci curvature, stability at infinity, and finite generation of fundamental groups, Geom. Topol. 23 (2019), no. 6, 3203–3231. 10.2140/gt.2019.23.3203Search in Google Scholar

[12] J. Pan, On the escape rate of geodesic loops in an open manifold with nonnegative Ricci curvature, Geom. Topol. 25 (2021), no. 2, 1059–1085. 10.2140/gt.2021.25.1059Search in Google Scholar

[13] C. Sormani and G. Wei, Various covering spectra for complete metric spaces, Asian J. Math. 19 (2015), no. 1, 171–202. 10.4310/AJM.2015.v19.n1.a7Search in Google Scholar

[14] G. Wei, Examples of complete manifolds of positive Ricci curvature with nilpotent isometry groups, Bull. Amer. Math. Soc. (N. S.) 19 (1988), no. 1, 311–313. 10.1090/S0273-0979-1988-15653-4Search in Google Scholar

[15] B. Wilking, On fundamental groups of manifolds of nonnegative curvature, Differential Geom. Appl. 13 (2000), no. 2, 129–165. 10.1016/S0926-2245(00)00030-9Search in Google Scholar

Received: 2020-09-17
Revised: 2021-09-24
Published Online: 2021-11-12
Published in Print: 2022-01-01

© 2021 Walter de Gruyter GmbH, Berlin/Boston

Downloaded on 2.10.2023 from https://www.degruyter.com/document/doi/10.1515/crelle-2021-0065/html
Scroll to top button