Continuous-time hybridization expansion quantum impurity solver for multi-orbital systems with complex hybridizations

TL;DR

This paper presents an open-source implementation of a continuous-time hybridization-expansion quantum Monte Carlo method tailored for multi-orbital impurity models with complex hybridizations, enhancing simulation capabilities in condensed matter physics.

Contribution

The authors develop and release an open-source code for a versatile quantum Monte Carlo solver applicable to complex multi-orbital impurity systems with general interactions.

Findings

Enables simulation of multi-orbital impurity models with complex hybridizations.

Supports general two-body interactions in impurity models.

Built on the ALPS libraries for broader applicability.

Abstract

We describe an open-source implementation of the continuous-time hybridization-expansion quantum Monte Carlo method for impurity models with general instantaneous two-body interactions and complex hybridization functions. The code is built on the ALPS libraries (Applications and Libraries for Physics Simulations).