Time-step targetting methods for real-time dynamics using DMRG

TL;DR

This paper introduces a new time-step targeting method for efficient real-time dynamics simulation using DMRG, applicable to complex systems with interactions beyond nearest neighbors, surpassing traditional Suzuki-Trotter methods.

Contribution

The proposed scheme extends DMRG-based real-time dynamics to systems with complex interactions, improving efficiency and applicability over existing methods.

Findings

Effective simulation of real-time dynamics in complex systems

Applicable to ladders and systems with long-range interactions

Outperforms Suzuki-Trotter based approaches

Abstract

We present a time-step targetting scheme to simulate real-time dynamics efficiently using the density matrix renormalization group (DMRG). The algorithm works on ladders and systems with interactions beyond nearest neighbors, in contrast to existing Suzuki-Trotter based approaches.