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Hitting estimates on Einstein manifolds and applications

  • Beomjun Choi EMAIL logo and Robert Haslhofer
Published/Copyright: November 11, 2022

Abstract

We generalize the Benjamini–Pemantle–Peres estimate relating hitting probability and Martin capacity to the setting of manifolds with Ricci curvature bounded below. As applications we obtain: (1) a sharp estimate for the probability that Brownian motion comes close to the high curvature part of a Ricci-flat manifold, (2) a proof of an unpublished theorem of Naber that every noncollapsed limit of Ricci-flat manifolds is a weak solution of the Einstein equations, (3) an effective intersection estimate for two independent Brownian motions on manifolds with nonnegative Ricci curvature and positive asymptotic volume ratio. We also obtain generalizations of (1) and (2) for the manifolds with two-sided Ricci bounds and Einstein manifolds with nonzero Einstein constant.

Award Identifier / Grant number: 2022R1C1C1013511

Funding statement: The first author has been partially supported by National Research Foundation of Korea grant No. 2022R1C1C1013511, POSTECH Basic Science Research Institute grant No. 2021R1A6A1A10042944, and POSCO Science Fellowship. The second author has been supported by an NSERC Discovery Grant and a Sloan Research Fellowship.

Acknowledgements

The first author thanks the University of Toronto, his affiliation at the time this research was commenced.

References

[1] M. Aizenman, The intersection of Brownian paths as a case study of a renormalization group method for quantum field theory, Comm. Math. Phys. 97 (1985), no. 1–2, 91–110. 10.1007/978-3-642-70307-2_6Search in Google Scholar

[2] L. Ambrosio, N. Gigli and G. Savaré, Calculus and heat flow in metric measure spaces and applications to spaces with Ricci bounds from below, Invent. Math. 195 (2014), no. 2, 289–391. 10.1007/s00222-013-0456-1Search in Google Scholar

[3] L. Ambrosio, N. Gigli and G. Savaré, Metric measure spaces with Riemannian Ricci curvature bounded from below, Duke Math. J. 163 (2014), no. 7, 1405–1490. 10.1215/00127094-2681605Search in Google Scholar

[4] M. T. Anderson, Convergence and rigidity of manifolds under Ricci curvature bounds, Invent. Math. 102 (1990), no. 2, 429–445. 10.1007/BF01233434Search in Google Scholar

[5] I. Benjamini, R. Pemantle and Y. Peres, Martin capacity for Markov chains, Ann. Probab. 23 (1995), no. 3, 1332–1346. 10.1214/aop/1176988187Search in Google Scholar

[6] I. Chavel and E. A. Feldman, The Lenz shift and Wiener sausage in Riemannian manifolds, Compos. Math. 60 (1986), no. 1, 65–84. Search in Google Scholar

[7] J. Cheeger and A. Naber, Regularity of Einstein manifolds and the codimension 4 conjecture, Ann. of Math. (2) 182 (2015), no. 3, 1093–1165. 10.4007/annals.2015.182.3.5Search in Google Scholar

[8] J. Cheeger and S. T. Yau, A lower bound for the heat kernel, Comm. Pure Appl. Math. 34 (1981), no. 4, 465–480. 10.1002/cpa.3160340404Search in Google Scholar

[9] E. B. Davies and N. Mandouvalos, Heat kernel bounds on hyperbolic space and Kleinian groups, Proc. Lond. Math. Soc. (3) 57 (1988), no. 1, 182–208. 10.1112/plms/s3-57.1.182Search in Google Scholar

[10] Y. Ding, Heat kernels and Green’s functions on limit spaces, Comm. Anal. Geom. 10 (2002), no. 3, 475–514. 10.4310/CAG.2002.v10.n3.a3Search in Google Scholar

[11] T. Eguchi and A. J. Hanson, Gravitational instantons, Gen. Relativity Gravitation 11 (1979), no. 5, 315–320. 10.1007/BF00759271Search in Google Scholar

[12] M. Fukushima, Dirichlet forms and Markov processes, North-Holland Math. Libr. 23, North-Holland Publishing, Amsterdam 1980. Search in Google Scholar

[13] N. Gigli, On the differential structure of metric measure spaces and applications, Mem. Amer. Math. Soc. 236 (2015), no. 1113. 10.1090/memo/1113Search in Google Scholar

[14] A. Grigor’yan and L. Saloff-Coste, Hitting probabilities for Brownian motion on Riemannian manifolds, J. Math. Pures Appl. (9) 81 (2002), no. 2, 115–142. 10.1016/S0021-7824(01)01244-2Search in Google Scholar

[15] R. Haslhofer and A. Naber, Ricci curvature and Bochner formulas for martingales, Comm. Pure Appl. Math. 71 (2018), no. 6, 1074–1108. 10.1002/cpa.21736Search in Google Scholar

[16] E. P. Hsu, Stochastic analysis on manifolds, Grad. Stud. Math. 38, American Mathematical Society, Providence 2002. 10.1090/gsm/038Search in Google Scholar

[17] W. Jiang and A. Naber, L 2 curvature bounds on manifolds with bounded Ricci curvature, Ann. of Math. (2) 193 (2021), no. 1, 107–222. 10.4007/annals.2021.193.1.2Search in Google Scholar

[18] S. Kakutani, Two-dimensional Brownian motion and harmonic functions, Proc. Imp. Acad. Tokyo 20 (1944), 706–714. 10.3792/pia/1195572706Search in Google Scholar

[19] W. S. Kendall, The radial part of Brownian motion on a manifold: A semimartingale property, Ann. Probab. 15 (1987), no. 4, 1491–1500. 10.1214/aop/1176991988Search in Google Scholar

[20] P. Li and S.-T. Yau, On the parabolic kernel of the Schrödinger operator, Acta Math. 156 (1986), no. 3–4, 153–201. 10.1007/BF02399203Search in Google Scholar

[21] J. Lott and C. Villani, Ricci curvature for metric-measure spaces via optimal transport, Ann. of Math. (2) 169 (2009), no. 3, 903–991. 10.4007/annals.2009.169.903Search in Google Scholar

[22] A. Naber, Characterizations of bounded Ricci curvature on smooth and nonsmooth spaces, preprint (2013), https://arxiv.org/abs/1306.6512. Search in Google Scholar

[23] R. Pemantle, Y. Peres and J. W. Shapiro, The trace of spatial Brownian motion is capacity-equivalent to the unit square, Probab. Theory Related Fields 106 (1996), no. 3, 379–399. 10.1007/s004400050070Search in Google Scholar

[24] K.-T. Sturm, On the geometry of metric measure spaces. I, Acta Math. 196 (2006), no. 1, 65–131. 10.1007/s11511-006-0002-8Search in Google Scholar

Received: 2020-11-09
Revised: 2022-09-23
Published Online: 2022-11-11
Published in Print: 2022-12-01

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