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+# DVR-jl
+
+Solves the quantum $n$-body problem in finite volume (lattice) with periodic boundary conditions. Uses discrete variable representation (DVR) with optional support for complex scaling to study resonances. All details can be found in [H. Yu, N. Yapa, and S. König, Complex scaling in finite volume, Phys. Rev. C 109, 014316 (2024)](https://doi.org/10.1103/PhysRevC.109.014316).
+
+## Installation
+
+Make sure you have Julia installed. To install the required packages, follow these steps:
+
+1. Open a terminal in the project root directory.
+2. Start Julia with the project environment activated:
+   ```bash
+   julia --project=.
+   ```
+3. Enter the package manager mode by pressing `]`.
+4. Run the `instantiate` command:
+   ```julia
+   (DVR-jl) pkg> instantiate
+   ```
+
+Alternatively, you can run this single command from your terminal:
+```bash
+julia --project=. -e 'import Pkg; Pkg.instantiate()'
+```
+
+## Usage
+
+See `calculations/3b_bound.jl` for an example on a 3-body bound state.
+See `calculations/3b_res_from_paper.jl` for an example of a 3-body resonance via complex scaling.
+
+## Planned features
+
+- [ ] Spin and isospin degrees of freedom for nuclear calculations
+- [ ] Multi-node HPC support
+- [ ] Parity and cubic symmetries ($S_4$)
+
+## Acknowledgments
+
+The author gratefully acknowledges the guidance from Sebastian König.