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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).

Written in Julia with optional CUDA GPU acceleration (experimental).

Installation

Make sure you have Julia installed. Required packages can be installed with a single command:

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.