3 papers
quant-ph2026
Entanglement-entropy analysis of critical and topological quantum phases in a frustrated spin-1/2 Heisenberg ladder
Azadeh Ghannadan, Hana Vargová, Jozef Genzor +2
We investigate the ground-state phase diagram of a frustrated spin-1/2 Heisenberg ladder in the transverse magnetic field with an anisotropic inter-rung exchange coupling . This…
quant-ph2025
Effect of Single-Ion Anisotropy on Stability of Quantum and Thermal Entanglement in a Mixed-Spin Heisenberg Trimer
Hana Vargová, Jozef Strečka
The effect of uniaxial single-ion anisotropy on quantum entanglement is rigorously quantified using negativity in a mixed spin-(,,) Heisenberg trimer, accounting for dif…
quant-ph2025
Robust global tripartite entanglement in a mixed spin-(,,) Heisenberg trimer
Hana Vargová
We rigorously analyze the global tripartite entanglement in a Heisenberg trimer with mixed spins-(,,) under varying exchange couplings between dissimilar and identical s…