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arXiv · 1501.07831

Post measurement bipartite entanglement entropy in conformal field theories

M. A. Rajabpour
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Abstract

We derive exact formulas for bipartite von Neumann entanglement entropy after partial projective local measurement in $1+1$ dimensional conformal field theories with periodic and open boundary conditions. After defining the set up we will check numerically the validity of our results in the case of Klein-Gordon field theory (coupled harmonic oscillators) and spin-$1/2$ XX chain in a magnetic field. The agreement between analytical results and the numerical calculations is very good. We also find a lower bound for localizable entanglement in coupled harmonic oscillators.

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BibTeXRIS

M. A. Rajabpour. 2015-08-06. Post measurement bipartite entanglement entropy in conformal field theories. https://doi.org/10.1103/physrevb.92.075108

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