# Features

A primary motivation of pi-qmc is to have a framework so that features
developed by one student or for one research project can be used
in many different contexts.
Some of the many features developed for pi-qmc include:

- Bosons
- Exact fermions
- Fixed-node fermions
- Coulomb Interactions
- Linear Response Theory
- Electron-Hole recombination rates.
- Exact magnetic fields and fixed-phase.
- Multilevel sampling.
- Collective sampling.
- Free-energy sampling.
- Spin flips.

We are developing system integration tests to document and verify the status
of these features.

## Applications

### Small Molecules

We have performed careful calculations on a H_{2} molecule.

### Quantum Dots

### Quantum Point Contacts

### Plasmas

### Ultracold Atomic Gases