A simple efficient algorithm in frustration-free one-dimensional gapped systems

TL;DR

This paper introduces a simplified and accessible algorithm for finding the ground state of frustration-free one-dimensional gapped Hamiltonians, making advanced quantum many-body techniques more approachable.

Contribution

It presents a significantly simpler algorithm than previous methods, with detailed explanations suitable for a broad audience.

Findings

Algorithm is more straightforward than previous approaches

Efficient in terms of computational complexity

Accessible to non-specialists in the field

Abstract

We propose an efficient algorithm for the ground state of frustration-free one-dimensional gapped Hamiltonians. This algorithm is much simpler than the original one by Landau et al., and thus may be easily accessible to a general audience in the community. We present all the details in two pages.