Bounds on the entanglement entropy by the number entropy in non-interacting fermionic systems
Entanglement in a pure state of a many-body system can be characterized by the R\'enyi entropies $S^{(\alpha)}=\ln\textrm{tr}(\rho^\alpha)/(1-\alpha)$ of the reduced density matrix $\rho$ of a subsystem. These entropies are, however, difficult to access experimentally and can typically be deter...
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| Format: | Article |
| Language: | English |
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SciPost
2020-06-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.8.6.083 |