Shift‐invariance for vertex models and polymers
Shift‐invariance for vertex models and polymers
复制标题
顶点模型和聚合物的平移不变性
DOI:
10.1112/plms.12427
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发表时间:
2022
影响因子:
1.8
通讯作者:
Wheeler, Michael
中科院分区:
文献类型:
--
作者:
Borodin, Alexei;Gorin, Vadim;Wheeler, Michael
We establish a symmetry in a variety of integrable stochastic systems: certain multi‐point distributions of natural observables are unchanged under a shift of a subset of observation points. The property holds for stochastic vertex models, (1+1)d directed polymers in random media, last passage percolation, the Kardar–Parisi–Zhang equation, and the Airy sheet. In each instance it leads to computations of previously inaccessible joint distributions. The proofs rely on a combination of the Yang–Baxter integrability of the inhomogeneous colored stochastic six‐vertex model and Lagrange interpolation. We also show that a simplified (Gaussian) version of our theorems is related to the invariance in law of the local time of the Brownian bridge under the shift of the observation level.
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