iiinova — where your digital self keeps evolving

Ryan Mann @ryanlmann.bsky.social · 21/08/2026

I'm pleased to have finished this paper on fast algorithms for stoquastic spin systems at high temperature. The algorithms run in expected near-linear time for sampling in the spin basis and near-quadratic time for counting. arxiv.org/abs/2608.19489

000 0

Ryan Mann @ryanlmann.bsky.social · 14/07/2026

I'm pleased to share that my note with Gabe Waite on efficient algorithms for weakly-interacting quantum spin systems at arbitrary temperature has now been published in PRA. arxiv.org/abs/2601.21140

010 0

Ryan Mann @ryanlmann.bsky.social · 30/01/2026

I'm pleased to have finished this simple note with Gabe Waite on efficient algorithms for weakly-interacting quantum spin systems at arbitrary temperature. scift.app/arxiv/paper/...

011 0

Ryan Mann @ryanlmann.bsky.social · 12/12/2025

A summary of results in local lemma regimes.

000 0

Ryan Mann @ryanlmann.bsky.social · 12/12/2025

I'm please to have finished this paper on approximate counting in local lemma regimes with Gabe Waite arxiv.org/abs/2512.10134

110 0

Ryan Mann @ryanlmann.bsky.social · 01/07/2025

I'm excited to share that my new website, Scift (www.scift.app), is now live! Scift is a simple way to explore scientific preprints from across all areas of science — no ratings, no comments, just the papers to read and consider on your own terms.

230 0

Ryan Mann @ryanlmann.bsky.social · 23/04/2025

I'm pleased that our paper on a graph-theoretic framework for free-parafermion solvability has been published in RSPA. We prove that if the frustration graph of a spin system is an oriented indifference graph, then it has an exact free-parafermion solution. royalsocietypublishing.org/doi/10.1098/...

050 0

Ryan Mann @ryanlmann.bsky.social · 21/02/2025

Gabe Waite (@quantumbeef_) of the Hamiltonian Jungle has uploaded his first first-author paper: "The Complexity of Local Stoquastic Hamiltonians on 2D Lattices". Read here: arxiv.org/pdf/2502.14244

000 0

Ryan Mann @ryanlmann.bsky.social · 28/01/2025

I'm pleased that our work on the optimal scheduling of graph states via path decompositions has been published in Physical Review A. journals.aps.org/pra/abstract/10.11…

000 0

Ryan Mann @ryanlmann.bsky.social · 20/08/2024

New paper with Samuel Elman, David Wood, and Adrian Chapman! We provide a graph-theoretic characterisation of when a quantum spin system can be solved via a mapping to free parafermions. arxiv.org/pdf/2408.09684

000 0

Ryan Mann @ryanlmann.bsky.social · 19/04/2024

The Hamiltonian Jungle has expanded! In our latest update we unravel the secrets of Cluster Expansions, C*-Algebras, and MCMC. We also explore the complexities of Stoquastic Hamiltonians and Partition Functions. Explore the jungle at

000 0

Ryan Mann @ryanlmann.bsky.social · 08/03/2024

On the arXiv today, Sam, Jason, and me, Posted some trivial results on MBQC. arxiv.org/abs/2403.04126

000 0

Ryan Mann @ryanlmann.bsky.social · 16/01/2024

The Hamiltonian Jungle is now alive! Inspired by the legacy of the Complexity Zoo, Quantum Algorithm Zoo, and Error Correction Zoo, this new website categorises the complexities of local Hamiltonian problems. Explore the jungle at

100 0

Ryan Mann @ryanlmann.bsky.social · 06/12/2023

I'm delighted that our paper on algorithmic cluster expansions for quantum problems, authored with @rminkomaths, has been accepted for publication in PRX Quantum. journals.aps.org/prxquantum/accepte… arxiv.org/abs/2306.08974