In the AdS/CFT correspondence, the causal structure of the bulk AdS spacetime is tied to entanglement in the dual CFT. This relationship is captured by the connected wedge theorem, which states that a bulk scattering process implies the existence of O(1/G) entanglement between associated boundary subregions. In this paper, we study the connected wedge theorem in two three-dimensional...
We usually investigate the entanglement between different spacelike regions. From the perspective of quantum field theory, it is natural to generalize the concept of spacelike entanglement to timelike entanglement. This can be achieved through the analytical continuation of correlation functions of twist operators. In this approach, we have unified the concepts of timelike and spacelike...
I will discuss the convergence properties of hydrodynamic modes from holographic pole collision. I will focus on a particular holographic system with an infrared semi-local quantum liquid phase, and explain the different physical consequences due to two types of lowest non-hydrodynamic modes. Finally, I will describe the Schwinger-Keyldysh effective actions incorporating these non-hydro modes.
In this talk, we will introduced our recent experiment about quantum simulation of Unruh effect in trapped ion. There are two topics: 1) how the superposition of trajectories affects the Unruh effect and particle creation from vacuum fluctuations; 2)observation of timelike Unruh effect, and verification that the Rindler spacetime is the fastest scrambler in nature pointed out by Yasuhiro...
I will show that the dynamical stability under linear perturbations of interacting systems in the hydrodynamic regime follows from the first and the second laws of thermodynamics. The argument extends to systems with spontaneously or softly broken symmetries and in the presence of magnetic fields.
We investigate a spontaneous symmetry breaking of a relativistic (2+1)-dimensional defect moving at a constant velocity in a (3+1)-dimensional heat bath using the D3-D5 model of the gauge/gravity duality. We find that the dependence of the order parameter on the heat-bath temperature and the defect velocity is uniquely expressed through a single variable, the proper effective temperature, for...
The interiors of black holes remain worthy of exploration. The dynamic evolution of spacetime from horizon to singularity can exhibit intriguing behaviors. In this talk, I will introduce two works on black hole interiors. In the first work, we extend our analysis to stationary black holes—specifically, 3D hairy rotating black holes. We find that the inner horizons are always destroyed by...
Using holographic duality, we present an analytically controlled theory of quantum critical points without quasiparticles, at finite disorder and finite charge density. These fixed points are obtained by perturbing a disorder-free quantum critical point with relevant disorder whose operator dimension is perturbatively close to Harris marginal. We analyze these fixed points both using field...
In this paper, we explore instabilities in binary superfluids with a nonvanishing relative superflow, particularly focusing on counterflow and coflow instabilities. We extend recent results on the thermodynamic origin of finite superflow instabilities in single-component superfluids to binary systems and derive a criterion for the onset of instability through a hydrodynamic analysis. To verify...
We studied magnetohydrodynamics through the perspective of holography, where the gravity side is represented by a 5-dimensional model of three magnetic fields, with each field occupying distinct spatial coordinates and orthogonal to one another. The CFT side describes non-conformal fluids but becomes conformal when considering only the first-order part. We constructed the constitutive...
We holographically study the far-from-equilibrium isotropization dynamics of the strongly coupled $\mathcal{N}=4$ supersymmetric Yang-Mills plasma. The dual gravitational background is driven to be out of equilibrium and anisotropic by a time-dependent change in boundary conditions. At late times, the system relaxes and asymptotically approaches a static configuration. The large initial energy...
By incorporating the equation of state and baryon number susceptibility from lattice QCD with error bars at zero chemical potential, we developed a Bayesian Inference model within the framework of holographic QCD. This model includes error estimates derived from lattice data. Based on this Bayesian holographic model, we investigated the thermodynamic quantities for the 2-flavor and 2+1-flavor...
The holographic approach to the strange metal phase relies on extremal AdS4 black holes with important input from their AdS2 throat geometry. Motivated by the current understanding of the role of quantum fluctuations in the throat of the black hole. We model quantum gravity and gauge fluctuations in the throat region by adopting results in JT gravity, effectively leading to quantum corrections...
