Average Gromov hyperbolicity and the Parisi ansatz
Average Gromov hyperbolicity and the Parisi ansatz
复制标题
平均格罗莫夫双曲性和帕里西 ansatz
DOI:
10.1016/j.aim.2020.107417
复制
发表时间:
2021
影响因子:
1.7
通讯作者:
Sloman, Leila
中科院分区:
文献类型:
--
作者:
Chatterjee, Sourav;Sloman, Leila
Gromov hyperbolicity of a metric space measures the distance of the space from a perfect tree-like structure. The measure has a “worst-case” aspect to it, in the sense that it detects a region in the space which sees the maximum deviation from tree-like structure. In this article we introduce an “average-case” version of Gromov hyperbolicity, which detects whether the “most of the space”, with respect to a given probability measure, looks like a tree. The main result of the paper is that if this average hyperbolicity is small, then the space can be approximately embedded in a tree. The proof uses a weighted version of Szemerédi's regularity lemma from graph theory. The result applies to Gromov hyperbolic spaces as well, since average hyperbolicity is bounded above by Gromov hyperbolicity. As an application, we give a construction of hierarchically organized pure states in any model of a spin glass that satisfies the Parisi ultrametricity ansatz.
登录
查看更多内容
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
M. Talagrand
通讯作者:
M. Talagrand
DOI:
10.1051/jphys:01984004505084300
发表时间:
1984
期刊:
Journal De Physique
影响因子:
--
作者:
M. Mézard;G. Parisi;N. Sourlas;G. Toulouse;M. Virasoro
通讯作者:
M. Virasoro
影响因子:
1.6
作者:
Aizenman, M;Contucci, P
通讯作者:
Contucci, P
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
S. Ghirlanda;F. Guerra
通讯作者:
F. Guerra
影响因子:
1
作者:
Lior Gishboliner;A. Shapira
通讯作者:
A. Shapira