FIT-MART: Quantum Magnetism with a Gentle Learning Curve

TL;DR

FIT-MART is an accessible, open-source software tool that enables non-experts to simulate quantum magnetism interactively, compare models with experimental data, and learn about quantum spin systems easily.

Contribution

It introduces a user-friendly, platform-independent Java application that simplifies quantum magnetism simulations through visual modeling and real-time data visualization.

Findings

Enables quick simulation of quantum magnetism for non-experts

Includes experimental data for magnetic molecules for comparison

Supports importing user data for analysis

Abstract

We present a new open-source software package, FIT-MART, that allows non-experts to quickly get started simulating quantum magnetism. FIT-MART can be downloaded as a platform-idependent executable Java (JAR) file. It allows the user to define (Heisenberg) Hamiltonians by electronically drawing pictures that represent quantum spins and operators. Sliders are automatically generated to control the values of the parameters in the model, and when the values change, several plots are updated in real time to display both the resulting energy spectra and the equilibruim magnetic properties. Several experimental data sets for real magnetic molecules are included in FIT-MART to allow easy comparison between simulated and experimental data, and FIT-MART users can also import their own data for analysis and compare the goodness of fit for different models.