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arXiv · 0712.0140

The von Neumann Entropy of EPR Spin Correlation for the Relativistic Pairs

Yoshihisa Nishikawa
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Abstract

Variation of the von Neumann entropy by the Lorentz transformation is discussed. Taking the spin-singlet state in the center of mass frame, the von Neumann entropy in the laboratory frame is calculated from the reduced density matrix obtained by taking the trace over 4-momentum after the Lorentz transformation. As the model to discuss the EPR spin correlation, it is supposed that one parent particle splits into a superposition state of various pair states in various directions. Computing the von Neumann entropy and the Shannon entropy, we have shown a global behavior of the entropy to see a relativistic effect. We discuss also the super-relativistic limit, distinguishability between the two particles of the pair and so on.

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Yoshihisa Nishikawa. 2008-08-26. The von Neumann Entropy of EPR Spin Correlation for the Relativistic Pairs. https://doi.org/10.1142/s0217751x08041372

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