Entanglement negativity in extended systems: a field theoretical approach
We report on a systematic approach for the calculation of the negativity in the ground state of a one-dimensional quantum field theory. The partial transpose ρAT2 of the reduced density matrix of a subsystem A = A1 ∪ A2 is explicitly constructed as an imaginary-time path integral and from this the r...
Main Authors: | Calabrese, P, Cardy, J, Tonni, E |
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格式: | Journal article |
語言: | English |
出版: |
2013
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