2021
DOI: 10.48550/arxiv.2106.15993
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Correlation energy and quantum correlations in a solvable model

Javier Faba,
Vicente Martín,
Luis Robledo

Abstract: Typically in many-body systems the correlation energy, which is defined as the difference between the exact ground state energy and the mean-field solution, has been a measure of the system's total correlations. However, under the quantum information context, it is possible to define some quantities in terms of the system's constituents that measure the classical and quantum correlations, such as the entanglement entropy, mutual information, quantum discord, one-body entropy, etc. In this work, we apply concep… Show more

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