# The ALF (Algorithms for Lattice Fermions) project release 2.0. Documentation for the auxiliary-field quantum Monte Carlo code

### Submission summary

 As Contributors: Jefferson Portela Arxiv Link: https://arxiv.org/abs/2012.11914v2 (pdf) Code repository: https://git.physik.uni-wuerzburg.de/ALF/ALF/-/tree/ALF-2.0 Date submitted: 2021-01-21 09:39 Submitted by: Portela, Jefferson Submitted to: SciPost Physics Codebases Academic field: Physics Specialties: Condensed Matter Physics - Computational Quantum Physics Approach: Computational

### Abstract

The Algorithms for Lattice Fermions package provides a general code for the finite-temperature and projective auxiliary-field quantum Monte Carlo algorithm. The code is engineered to be able to simulate any model that can be written in terms of sums of single-body operators, of squares of single-body operators and single-body operators coupled to a bosonic field with given dynamics. The package includes five pre-defined model classes: SU(N) Kondo, SU(N) Hubbard, SU(N) t-V and SU(N) models with long range Coulomb repulsion on honeycomb, square and N-leg lattices, as well as $Z_2$ unconstrained lattice gauge theories coupled to fermionic and $Z_2$ matter. An implementation of the stochastic Maximum Entropy method is also provided. One can download the code from our Git instance at https://git.physik.uni-wuerzburg.de/ALF/ALF/-/tree/ALF-2.0 and sign in to file issues.

###### Current status:
Editor-in-charge assigned