Stable random fields, Patterson–Sullivan measures and extremal cocycle growth
Stable random fields, Patterson–Sullivan measures and extremal cocycle growth
复制标题
稳定随机场、帕特森沙利文测度和极值循环增长
DOI:
10.1007/s00440-022-01134-z
复制
发表时间:
2022
影响因子:
2
通讯作者:
Roy, Parthanil
中科院分区:
文献类型:
--
作者:
Athreya, Jayadev S.;Mj, Mahan;Roy, Parthanil
We study extreme values of group-indexed stable random fields for discrete groupsGacting geometrically on spacesXin the following cases: (1)Gacts properly discontinuously by isometries on a CAT(-1) spaceX, (2)Gis a lattice in a higher rank Lie group, acting on a symmetric spaceX, and (3)Gis the mapping class group of a surface acting on its Teichmüller space. The connection between extreme values and the geometric action is mediated by the action of the groupGon its limit set equipped with the Patterson–Sullivan measure. Based on motivation from extreme value theory, we introduce an invariant of the action called extremal cocycle growth which measures the distortion of measures on the boundary in comparison to the movement of points in the spaceXand show that its non-vanishing is equivalent to finiteness of the Bowen–Margulis measure for the associated unit tangent bundleU(X/G) providedX/Ghas non-arithmetic length spectrum. As a consequence, we establish a dichotomy for the growth-rate of a partial maxima sequence of stationary symmetric-stable () random fields indexed by groups acting on such spaces. We also establish analogous results for normal subgroups of free groups.
登录
查看更多内容
影响因子:
4.9
作者:
H. Masur;J. Smillie
通讯作者:
H. Masur;J. Smillie
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
Jan Ronsinski
通讯作者:
Jan Ronsinski
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
C. Connell;R. Muchnik
通讯作者:
R. Muchnik
影响因子:
2.5
作者:
J. Athreya;A. Bufetov;A. Eskin;M. Mirzakhani
通讯作者:
M. Mirzakhani
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
M. Mitra
通讯作者:
M. Mitra