WaveDM.jl Delivers First Scalable Joint Solver for Wave Dark Matter and Baryons on Galaxy Scales
WaveDM.jl supplies the first adaptable open-source framework that jointly evolves baryonic matter and wave dark matter on galaxy scales through a unified spectral-plus-N-body solver. The code addresses the piecemeal treatment of the small-scale crisis by enabling seamless single-to-multi-node execution and cross-disciplinary reuse. Evidence rests on the described architecture rather than published production runs.
The package implements a pseudo-spectral Fourier solver for the time-dependent Schrödinger-Poisson system tightly coupled to gravitational N-body integrators. This architecture permits the same workflow to run on shared-memory nodes, distributed clusters, or GPUs without code modification. Initial-condition generators, tidal-field calculators, and live visualization tools are bundled, lowering the barrier for galaxy-scale experiments that previously required stitching separate codes. The design directly targets the small-scale crisis where cold-dark-matter simulations overpredict central densities and satellite abundances while fuzzy-dark-matter models remain computationally fragmented.
Prior fuzzy-dark-matter work, such as the original Hu-Barkana-Gruzinov formulation and subsequent isolated Schrödinger-Poisson runs, treated baryons either statically or through post-processing. WaveDM.jl removes that separation by advancing both components on shared time steps inside one extensible module. Its nonlinear Schrödinger backbone also maps onto optics and cold-atom problems, yet the authors supply no scaling benchmarks against established codes such as AxioNyx or dedicated fuzzy-DM solvers, leaving performance claims unquantified beyond the stated parallel abstraction.
The principal limitation is the absence of star-formation or feedback sub-grid models, restricting direct comparison with observed galaxy populations until users implement those modules. A decisive next test would be a controlled 100-pc-resolution zoom-in simulation of a Milky-Way analog run with both cold and fuzzy dark matter under identical baryonic physics, measuring core formation and satellite suppression within the same codebase.
Meng et al.: At least five peer-reviewed galaxy-formation papers will cite WaveDM.jl and report new core-radius or satellite-count measurements by mid-2028.
Sources (3)
- [1]Primary Source(https://arxiv.org/abs/2606.25026)
- [2]Fuzzy Dark Matter Foundations(https://arxiv.org/abs/astro-ph/0003365)
- [3]Schrödinger-Poisson Galaxy Simulations(https://arxiv.org/abs/1711.04778)