Efficient learning of ground and thermal states within phases of matter

C Rouzé, D Stilck França, E Onorati… - Nature …, 2024 - nature.com
We consider two related tasks:(a) estimating a parameterisation of a given Gibbs state and
expectation values of Lipschitz observables on this state;(b) learning the expectation values …

Optimal mixing of Glauber dynamics: Entropy factorization via high-dimensional expansion

Z Chen, K Liu, E Vigoda - Proceedings of the 53rd Annual ACM SIGACT …, 2021 - dl.acm.org
We prove an optimal mixing time bound for the single-site update Markov chain known as
the Glauber dynamics or Gibbs sampling in a variety of settings. Our work presents an …

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 …

Rapid mixing of Glauber dynamics up to uniqueness via contraction

Z Chen, K Liu, E Vigoda - SIAM Journal on Computing, 2023 - SIAM
For general antiferromagnetic 2-spin systems, including the hardcore model on weighted
independent sets and the antiferromagnetic Ising model, there is an for the partition function …

Rapid mixing from spectral independence beyond the Boolean domain

W Feng, H Guo, Y Yin, C Zhang - ACM Transactions on Algorithms …, 2022 - dl.acm.org
We extend the notion of spectral independence (introduced by Anari, Liu, and Oveis
Gharan) from the Boolean domain to general discrete domains. This property characterises …

Rapid mixing for colorings via spectral independence

Z Chen, A Galanis, D Štefankovič, E Vigoda - Proceedings of the 2021 ACM …, 2021 - SIAM
The spectral independence approach of Anari et al.(2020) utilized recent results on high-
dimensional expanders of Alev and Lau (2020) and established rapid mixing of the Glauber …

Rapid mixing of Glauber dynamics via spectral independence for all degrees

X Chen, W Feng, Y Yin, X Zhang - SIAM Journal on Computing, 2024 - SIAM
We prove an optimal lower bound on a spectral gap of the Glauber dynamics for
antiferromagnetic two-spin systems with vertices in the tree uniqueness regime. This …

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 …

On complex roots of the independence polynomial

F Bencs, P Csikvári, P Srivastava, J Vondrák - … of the 2023 Annual ACM-SIAM …, 2023 - SIAM
The independence polynomial of a graph is the generating polynomial of all its independent
sets. Formally, given a graph G, its independence polynomial ZG (λ) is given by Σ I λ| I …

Absence of zeros implies strong spatial mixing

G Regts - Probability Theory and Related Fields, 2023 - Springer
In this paper we show that absence of complex zeros of the partition function of the hard-
core model on any family of bounded degree graphs that is closed under taking induced …