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• W1563049063 abstract "Given a specific interacting quantum Hamiltonian in a general spatial dimension, can one access its entanglement properties, such as, the entanglement entropy corresponding to the ground state wavefunction? Even though progress has been made in addressing this question for interacting bosons and quantum spins, as yet there exist no corresponding methods for interacting fermions. Here we show that the entanglement structure of interacting fermionic Hamiltonians has a particularly simple form -- the interacting reduced density matrix can be written as a sum of operators that describe free fermions. This decomposition allows one to calculate the Renyi entropies for Hamiltonians which can be simulated via Determinantal Quantum Monte Carlo, while employing the efficient techniques hitherto available only for free fermion systems. The method presented works for the ground state, as well as for the thermally averaged reduced density matrix." @default.
• W1563049063 created "2016-06-24" @default.
• W1563049063 creator A5065082149 @default.
• W1563049063 date "2013-09-24" @default.
• W1563049063 modified "2023-10-04" @default.
• W1563049063 title "Entanglement of Interacting Fermions in Quantum Monte Carlo Calculations" @default.
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• W1563049063 doi "https://doi.org/10.1103/physrevlett.111.130402" @default.
• W1563049063 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24116750" @default.
• W1563049063 hasPublicationYear "2013" @default.
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