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Support long-range dipole in linear spin wave theory #257

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4 changes: 1 addition & 3 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -50,11 +50,9 @@ Sunny is inspired by SpinW, especially regarding symmetry analysis, model specif
| [Interaction renormalization for dipoles](https://arxiv.org/abs/2304.03874) | ❌ | ❌ | ✅ |
| [Multi-flavor spin wave theory](https://arxiv.org/abs/1307.7731) | ✅ | ❌ | ✅ |
| [Classical SU(_N_) spin dynamics](https://arxiv.org/abs/2209.01265)</u> | ❌ | ❌ | ✅ |
| Ewald summation for dipole-dipole | ❌ | ❌ | 🟨⁽¹⁾ |
| Ewald summation for dipole-dipole | ❌ | ❌ | |
| Programming language | C++ | Matlab | [Julia](https://julialang.org/) |

_Fine print: (1) Dipole-dipole interactions currently supported in classical dyamics but not LSWT._

The classical SU(_N_) spin dynamics in Sunny generalizes the Landau-Lifshitz equation for $S > 1/2$ quantum spins. Linearizing and quantizing SU(_N_) dynamics yields a generalization of spin wave theory involving multi-flavor bosons.

Codes like [Spirit](https://github.com/spirit-code/spirit) and [Vampire](https://vampire.york.ac.uk/) focus less on capturing quantum effects, but may be good options for classical dynamics of pure dipoles.
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