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Entanglement negativity in extended systems: A field theoretical approach
Pasquale Calabrese, John Cardy, Erik Tonni
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 rho_A^{T_2} of the red…
Corner contribution to percolation cluster numbers
István A. Kovács, Ferenc Iglói, John Cardy
We study the number of clusters in two-dimensional (2d) critical percolation, N_Gamma, which intersect a given subset of bonds, Gamma. In the simplest case, when Gamma is a simple…
Entanglement negativity in quantum field theory
Pasquale Calabrese, John Cardy, Erik Tonni
We develop a systematic method to extract the negativity in the ground state of a 1+1 dimensional relativistic quantum field theory, using a path integral formalism to construct th…