2 papers
math-ph2026
Certified robustness of quantum spin textures under magnetic-field perturbations
Raúl Sánchez Galán, Robert Wieser
How much can a magnetic field change before a quantum spin texture loses its skyrmion charge? We address this question by combining the geometry of local spin expectation values wi…
cond-mat.str-el2026
Quantum-classical crossover in finite spin-1/2 rings with Dzyaloshinsky-Moriya interaction
Raúl Sánchez Galán, Robert Wieser
We study finite spin- rings with nearest-neighbor Heisenberg exchange, Dzyaloshinsky--Moriya interaction, and an external magnetic field. We introduce an interpolation pa…