Dresden 2026 – scientific programme

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MA: Fachverband Magnetismus

MA 45: Magnetic Relaxation and Gilbert Damping

MA 45.3: Talk

Thursday, March 12, 2026, 10:00–10:15, POT/0351

Quantum Landau-Lifshitz-Gilbert equation — •Yuefei Liu — Nordita, Stockholm University and KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden — Center for Quantum Spintronics, Department of Physics, NTNU, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway

The classical Landau-Lifshitz-Gilbert (LLG) equations describe magnetization dynamics. Extending them to quantum systems is difficult, but we introduce an effective equation that is considered as a quantum analog of LLG equation [PRL 133, 266704 (2024)]. It reproduces classical features for ferromagnetically coupled spin-1/2 dimers, yet deviates strongly in antiferromagnetic and entangled cases, suggesting a new paradigm beyond Lindblad-type master equations.

Keywords: Landau-Lifshitz-Gilbert equation; Non-linear quantum dissipative dynamics