AdS plane waves, entanglement, and mutual information

作者：Mukherjee Debangshu^*; Narayan K

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2014, 90(2): 026003.

DOI：10.1103/PhysRevD.90.026003

Anti-de Sitter plane wave backgrounds are dual to conformal field theory excited states with energy momentum density T++ = Q. Building on previous work on entanglement entropy in these and nonconformal brane plane wave backgrounds, we first describe a phenomenological scaling picture for entanglement in terms of "entangling partons." We then study aspects of holographic mutual information in these backgrounds for two strip shaped subsystems, aligned parallel or orthogonal to the flux. We focus on the wide (Ql(d) >> 1) and narrow (Ql(d) << 1) strip regimes. In the wide strip regime, mutual information exhibits growth with the individual strip sizes, and a disentangling transition as the separation between the strips increases, for which the behavior is distinct from the ground and thermal states. In the narrow strip case, our calculations have parallels with "entanglement thermodynamics" for these anti-de Sitter plane wave deformations. We also discuss some numerical analyses.

• 出版日期2014-7-15