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2014

Variation of Entanglement Entropy in Scattering Process

Park, I. Y., Seki, Shigenori, Sin, Sang-Jin

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In a scattering process, the final state is determined by an initial state and an S-matrix.

We focus on two-particle scattering processes and consider the entanglement between these particles.
For two types initial states; i.e., an unentangled state and an entangled one, we calculate perturbatively the change of entanglement entropy from the initial state to the final one.
Then we show a few examples in a field theory and in quantum mechanics.

Variation of Entanglement Entropy in Scattering Process · Around

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V. Balasubramanian, M. B. McDermott and M. Van Raamsdonk, “Momentum-space entanglement and renormalization in quantum field theory,” Phys. Rev. D 86
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2012
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Cited alongside, same era.