Density matrix algorithm for the calculation of dynamical properties of low dimensional systems

TL;DR

This paper extends the density matrix renormalization group method to compute dynamical correlation functions, demonstrated through spin dynamics in a 1D Heisenberg chain, enhancing the analysis of low-dimensional quantum systems.

Contribution

The paper introduces an extension of the density matrix renormalization group technique for calculating dynamical properties, broadening its applicability.

Findings

Successful calculation of spin dynamics in the 1D Heisenberg chain

Demonstrated improved performance of the extended method

Validated the approach for low-dimensional quantum systems

Abstract

I extend the scope of the density matrix renormalization group technique developed by White to the calculation of dynamical correlation functions. As an application and performance evaluation I calculate the spin dynamics of the 1D Heisenberg chain.