Semiclassical Einstein equations from holography and boundary dynamics
Jan 28, 2023
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Abstract: (Springer)
In this paper, we consider how to formulate semiclassical problems in the context of the AdS/CFT correspondence, based on the proposal of Compere and Marolf. Our prescription involves the effective action with self-action term for boundary dynamical fields, which can be viewed as imposing mixed boundary conditions for the gravity dual. We derive the semiclassical Einstein equations sourced by boundary CFT stress-energy tensor. Analyzing perturbations of the holographic semiclassical Einstein equations, we find a universal parameter γ which controls the contribution from boundary CFTs and specifies dynamics on the AdS boundary. As a simple example, we examine the semiclassical Einstein equations in 3-dimensions with 4-dimensional AdS gravity dual, and show that the boundary BTZ black hole with vanishing expectation value of the stress-energy tensor becomes unstable due to the backreaction from quantum stress-energy tensor when the parameter γ exceeds a certain critical value.Note:
- 34 page, 4 figures; one figure and refs added, some clarifications made, version to appear in JHEP
- AdS-CFT Correspondence
- Gauge-Gravity Correspondence
- Einstein equation: semiclassical
- tensor: energy-momentum
- field theory: conformal
- gravitation: duality
- gravitation: anti-de Sitter
- black hole: BTZ
- holography
- back reaction
References(41)
Figures(4)
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