Quantifying fermionic interactions from the violation of Wick's theorem
In contrast to interacting systems, the ground state of free systems has a highly ordered pattern of quantum correlations, as witnessed by Wick's decomposition. Here, we quantify the effect of interactions by measuring the violation they cause on Wick's decomposition. In particular, we exp...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2022-10-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/papers/q-2022-10-13-840/pdf/ |