Authors: Hoshang Heydari 
              Publish Date: 2009/10/22
              Volume: 9, Issue: 2, Pages: 233-238 
			  
              Abstract
              In this paper we define a family of hermitian operators by which to extract what we call quantumrelativephase properties of a pure or mixed multipartite quantum state and we relate these properties to known measures of entanglement namely the mtangle and the invariant S m2 of the multilocal Lorentzgroup SL2 mathbbCotimes m  Our construction is based on the orthogonal complement of a positive operator valued measure on quantum phase
              
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