17 citations · 23 across the 2 of their papers we have counts for
2 papers
quant-ph2008★ 6 cited
Entanglement and Quantum Groups
J. K. Korbicz, J. Wehr, M. Lewenstein
We describe quantum mechanical entanglement in terms of compact quantum groups. We prove an analog of positivity of partial transpose (PPT) criterion and formulate a Horodecki-type…
cond-mat.other2007★ 17 cited
Classical Spin Models with Broken Continuous Symmetry: Random Field Induced Order and Persistence of Spontaneous Magnetization
Aditi Sen De, Ujjwal Sen, Jan Wehr +1
We consider a classical spin model, of two-dimensional spins, with continuous symmetry, and investigate the effect of a symmetry breaking unidirectional quenched disorder on the ma…