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Search: authors:"Huajia Wang"

7 papers found.
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A modular toolkit for bulk reconstruction

Abstract We introduce new tools for studying modular flow in AdS/CFT. These tools allow us to efficiently extract bulk information related to causality and locality. For example, we discuss the relation between analyticity in modular time and entanglement wedge nesting which can then be used to extract the location of the Ryu-Takayanagi (RT) surface directly from the boundary...

Probing beyond ETH at large c

Abstract We study probe corrections to the Eigenstate Thermalization Hypothesis (ETH) in the context of 2D CFTs with large central charge and a sparse spectrum of low dimension operators. In particular, we focus on observables in the form of non-local composite operators \( {\mathcal{O}}_{\mathrm{obs}}(x)={\mathcal{O}}_L(x){\mathcal{O}}_L(0) \) with h L ≪ c. As a light probe...

Thermality and excited state Rényi entropy in two-dimensional CFT

Abstract We evaluate one-interval Rényi entropy and entanglement entropy for the excited states of two-dimensional conformal field theory (CFT) on a cylinder, and examine their differences from the ones for the thermal state. We assume the interval to be short so that we can use operator product expansion (OPE) of twist operators to calculate Rényi entropy in terms of sum of one...

Black branes in flux compactifications

Gonzalo Torroba 0 Huajia Wang 0 0 Stanford Institute for Theoretical Physics, Department of Physics, Stanford University , 382 Via Pueblo Mall, Stanford, CA 94305 , U.S.A. Theory Group, SLAC

Resolving Lifshitz horizons

Sarah Harrison 0 Shamit Kachru 0 Huajia Wang 0 0 Stanford Institute for Theoretical Physics, Department of Physics, Stanford University , Stanford, CA 94305 , U.S.A. Theory Group, SLAC National

Emergent Fermi surfaces, fractionalization and duality in supersymmetric QED

We study the physics of 3d supersymmetric abelian gauge theories (with small supersymmetry breaking perturbations) at finite density. Using mirror symmetry, which provides a natural generalization of the duality between the XY model and the abelian Higgs model but now including fermionic fields, we see many dynamical phenomena conjectured to be of relevance in condensed matter...

Aspects of holography for theories with hyperscaling violation

Abstract We analyze various aspects of the recently proposed holographic theories with general dynamical critical exponent z and hyperscaling violation exponent θ. We first find the basic constraints on z, θ from the gravity side, and compute the stress-energy tensor expectation values and scalar two-point functions. Massive correlators exhibit a nontrivial exponential behavior...