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Paper   IPM / Physic / 14496
School of Physics
  Title:   Non-local Probes in Holographic Theories with Momentum Relaxation
  Author(s): 
1.  M.M. Mohammadi Mozaffar
2.  A. Mollabashi
3.  F. Omidi
  Status:   Published
  Journal: JHEP
  Vol.:  1610
  Year:  2016
  Pages:   135
  Supported by:  IPM
  Abstract:
We consider recently introduced solutions of Einstein gravity with minimally coupled massless scalars. The geometry is homogeneous, isotropic and asymptotically anti de-Sitter while the scalar fields have linear spatial-dependent profiles. The spatially-dependent marginal operators dual to scalar fields cause momentum dissipation in the deformed dual CFT. We study the effect of these marginal deformations on holographic entanglement measures and Wilson loop. We show that the structure of the universal terms of entanglement entropy for d > 2-dim deformed CFTs is corrected depending on the geometry of the entangling regions. In d=2 case, the universal term is not corrected while momentum relaxation leads to a non-critical correction. We also show that decrease of the correlation length causes: the phase transition of holographic mutual information to happen at smaller separations and the confinement/deconfinement phase transition to take place at smaller critical lengths. We also study the correction to the effective potential between point like external objects which shows that the strength of the corresponding force between these objects is an increasing function of the momentum relaxation parameter.

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