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Entanglement in bosonic systems

Stein Olav Skrøvseth
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Abstract

We present a technique to resolve a Gaussian density matrix and its time evolution through known expectation values in position and momentum. Further we find the full spectrum of this density matrix and apply the technique to a chain of harmonic oscillators to find agreement with conformal field theory in this domain. We also observe that a non-conformal state has a divergent entanglement entropy.

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Stein Olav Skrøvseth. 2005-12-06. Entanglement in bosonic systems. https://doi.org/10.1103/physreva.72.062305

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