Spectral independence in high-dimensional expanders and applications to the hardcore model

N Anari, K Liu, SO Gharan - SIAM Journal on Computing, 2021 - SIAM
We say a probability distribution μ is spectrally independent if an associated pairwise
influence matrix has a bounded largest eigenvalue for the distribution and all of its …

The Ising partition function: Zeros and deterministic approximation

J Liu, A Sinclair, P Srivastava - Journal of Statistical Physics, 2019 - Springer
We study the problem of approximating the partition function of the ferromagnetic Ising
model with both pairwise as well as higher order interactions (equivalently, in graphs as well …

Perfect sampling in infinite spin systems via strong spatial mixing

K Anand, M Jerrum - SIAM Journal on Computing, 2022 - SIAM
We present a simple algorithm that perfectly samples configurations from the unique Gibbs
measure of a spin system on a potentially infinite graph G. The sampling algorithm assumes …

Convergence of MCMC and loopy BP in the tree uniqueness region for the hard-core model

C Efthymiou, TP Hayes, D Stefankovic, E Vigoda… - SIAM Journal on …, 2019 - SIAM
We study the hard-core (gas) model defined on independent sets of an input graph where
the independent sets are weighted by a parameter (aka fugacity) λ>0. For constant Δ, the …

Contraction: A unified perspective of correlation decay and zero-freeness of 2-spin systems

S Shao, Y Sun - Journal of Statistical Physics, 2021 - Springer
We study the connection between the correlation decay property (more precisely, strong
spatial mixing) and the zero-freeness of the partition function of 2-spin systems on graphs of …

Fast sampling via spectral independence beyond bounded-degree graphs

I Bezáková, A Galanis, LA Goldberg… - ACM Transactions on …, 2024 - dl.acm.org
Spectral independence is a recently developed framework for obtaining sharp bounds on
the convergence time of the classical Glauber dynamics. This new framework has yielded …

Approximation via correlation decay when strong spatial mixing fails

I Bezáková, A Galanis, LA Goldberg, H Guo… - SIAM Journal on …, 2019 - SIAM
Approximate counting via correlation decay is the core algorithmic technique used in the
sharp delineation of the computational phase transition that arises in the approximation of …

Sampling in uniqueness from the Potts and random-cluster models on random regular graphs

A Blanca, A Galanis, LA Goldberg, D Stefankovic… - SIAM Journal on Discrete …, 2020 - SIAM
We consider the problem of sampling from the Potts model on random regular graphs. It is
conjectured that sampling is possible when the temperature of the model is in the so-called …

A spectral independence view on hard spheres via block dynamics

T Friedrich, A Göbel, MS Krejca, M Pappik - SIAM Journal on Discrete …, 2022 - SIAM
The hard-sphere model is one of the most extensively studied models in statistical physics. It
describes the continuous distribution of spherical particles, governed by hard-core …

Perfect sampling for hard spheres from strong spatial mixing

K Anand, A Göbel, M Pappik, W Perkins - arXiv preprint arXiv:2305.02450, 2023 - arxiv.org
We provide a perfect sampling algorithm for the hard-sphere model on subsets of $\mathbb
{R}^ d $ with expected running time linear in the volume under the assumption of strong …