Comment on ``Geometric phase of entangled spin pairs in a magnetic field''
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🪐 quant-ph
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basicbf72breachchangecommentdegreeentangledentanglement
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The degree of entanglement between two spins may change due to interaction. About this we find that a wrong result in a recent work by Ge and Wadati [Phys. Rev. A {\bf72}, 052101(2005)] which breach the basic principle.
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