Reply to a Comment on ``Projective Quantum Monte Carlo Method for the Anderson Impurity Model and its Application to Dynamical Mean Field Theory''

TL;DR

This paper defends the validity of a quantum Monte Carlo method for the Anderson Impurity Model against criticisms, clarifying that the orthogonality catastrophe does not impact their results and is manageable.

Contribution

The authors provide a rebuttal demonstrating that their quantum Monte Carlo approach is unaffected by the orthogonality catastrophe, countering previous objections.

Findings

No orthogonality catastrophe in their calculations

The orthogonality catastrophe does not influence their results

It is practical to avoid the orthogonality catastrophe in their method

Abstract

In our reply, we show that the objections put forward in cond-mat/0508763 concerning our paper, Phys. Rev. Lett. 93, 136405 (2004), are not valid: (i) There is no orthogonality catastrophe (OC) for our calculations, and it is also generally not ``unpractical'' to avoid it. (ii) The OC does not affect our results.