An alternative method for extracting the von Neumann entropy from Rényi entropies
Abstract An alternative method is presented for extracting the von Neumann entropy − Tr(ρ ln ρ) from Tr(ρ n ) for integer n in a quantum system with density matrix ρ. Instead of relying on direct analytic continuation in n, the method uses a generating function − Tr{ρ ln[(1 − zρ)/(1 − z)]} of an aux...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-01-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP01(2021)042 |