Double Local Quenches in 2D CFTs and Gravitational Force

May 20, 2019
80 pages
Published in:
  • JHEP 09 (2019) 018
  • Published: Sep 3, 2019
e-Print:
Report number:
  • YITP-19-41,
  • IPMU19-0077

Citations per year

2019202120232025202502468
Abstract: (Springer)
In this work we extensively study the dynamics of excited states created by instantaneous local quenches at two different points, i.e. double local quenches. We focus on setups in two dimensional holographic and free Dirac fermion CFTs. We calculate the energy stress tensor and entanglement entropy for double joining and splitting local quenches. In the splitting local quenches we find an interesting oscillating behaviors. Finally, we study the energy stress tensor in double operator local quenches. In all these examples, we find that, in general, there are non-trivial interactions between the two local quenches. Especially, in holographic CFTs, the differences of the above quantities between the double local quench and the simple sum of two local quenches tend to be negative. We interpret this behavior as merely due to gravitational force in their gravity duals.
Note:
  • 80pages, 50figures; v2: minor corrections, v3: explanations added in section 7, minor corrections
  • AdS-CFT Correspondence
  • Conformal Field Theory
  • Holography and condensed matter physics (AdS/CMT)
  • field theory: conformal
  • tensor: energy-momentum
  • operator: local
  • force: gravitation
  • dimension: 2
  • entropy: entanglement
  • gravitation: duality