118 citations · 1.1k across the 36 of their papers we have counts for
39 papers
A new product entropy
Jiaju Zhang, Zhuo-Yu Xian, René Meyer +2
We propose a new product entropy, defined as the Rényi (or von Neumann) entropy of a normalized product operator constructed from two density matrices. We establish a duality showi…
Learning Effective Bulk Fields from Fermionic Spectra: Application to an Extended Power-Law Liquid Model for Cuprate Strange Metals
Hong-Zhi Xiao, Zhan-Zhi He, Zhuo-Yu Xian +1
We develop a Neural-ODE framework to infer effective bulk metric functions and the charge-weighted gauge potential from boundary fermionic spectra within a static, planar black-hol…
Boundary mutual information in double holography
Yuxuan Liu, Yi Ling, Zhuo-Yu Xian
We consider a composite system where AdS gravity is coupled to a flat heat bath and investigate the mutual information between two subregions on the intersection of the AdS…
Symmetry-Resolved Entanglement Entropy from Heat Kernels
Yuan-Chun Jing, Chao Niu, Zhuo-Yu Xian
We develop a systematic framework for computing symmetry-resolved entanglement entropies (SREE) in charged quantum systems based on an improved heat kernel approach. Although the c…
Learning geometries beyond asymptotic AdS
Cheng Ran, Shao-Feng Wu, Zhuo-Yu Xian
We present a data-driven method for holographic bulk reconstruction that works even when the spacetime is not asymptotically AdS. Given the data of boundary Green functions within…
Entropy Measures for Transition Matrices in Random Systems
Zhaohui Chen, Rene Meyer, Zhuo-Yu Xian
A transition matrix can be constructed through the partial contraction of two given quantum states. We analyze and compare four different definitions of entropy for transition matr…
Torsional Hall Viscosity of Massive Chern Insulators: Magnetic Field and Momentum Deformations
Ioannis Matthaiakakis, Weizhen Jia, Raffael L. Klees +5
This work focuses on the non-dissipative, parity-odd spin transport of -dimensional relativistic electrons, generated by torsion, and the torsional Hall viscosity $ζ_{\rm H}…
Chaos and integrability in triangular billiards
Vijay Balasubramanian, Rathindra Nath Das, Johanna Erdmenger +1
We characterize quantum dynamics in triangular billiards in terms of five properties: (1) the level spacing ratio (LSR), (2) spectral complexity (SC), (3) Lanczos coefficient varia…
Discrete JT gravity as an Ising model
Johanna Erdmenger, Jonathan Karl, Yanick Thurn +2
Inspired by the program of discrete holography, we show that Jackiw-Teitelboim (JT) gravity on a hyperbolic tiling of Euclidean AdS gives rise to an Ising model on the dual lat…
Operator size growth in Lindbladian SYK
Jiasheng Liu, Rene Meyer, Zhuo-Yu Xian
We investigate the growth of operator size in the Lindbladian Sachdev-Ye-Kitaev model with -body interaction terms and linear jump terms at finite dissipation strength. We compu…
Entanglement in interacting Majorana chains and transitions of von Neumann algebras
Pablo Basteiro, Giuseppe Di Giulio, Johanna Erdmenger +1
We consider Majorana lattices with two-site interactions consisting of a general function of the fermion bilinear. The models are exactly solvable in the limit of a large number of…
Entanglement inside a black hole before the Page time
Yuxuan Liu, Shao-Kai Jian, Yi Ling +1
We investigate the evolution of entanglement within an open, strongly coupled system interacting with a heat bath as its environment, in the frameworks of both the doubly holograph…
Entanglement of defect subregions in double holography
Yuxuan Liu, Qian Chen, Yi Ling +3
In the framework of double holography, we investigate the entanglement behavior of a brane subregion in AdS spacetime coupled to a bath on its boundary and also extract the contrib…
Electric conductivity in non-Hermitian holography
Zhuo-Yu Xian, David Rodríguez Fernández, Zhaohui Chen +2
We study the phase structure and charge transport at finite temperature and chemical potential in the non-Hermitian PT-symmetric holographic model of arXiv:1912.06647. The non-Herm…
Universal chaotic dynamics from Krylov space
Johanna Erdmenger, Shao-Kai Jian, Zhuo-Yu Xian
Krylov complexity measures the spread of the wavefunction in the Krylov basis, which is constructed using the Hamiltonian and an initial state. We investigate the evolution of the…
Quantum chaos, scrambling and operator growth in deformed SYK models
Song He, Pak Hang Chris Lau, Zhuo-Yu Xian +1
In this work, we investigate the quantum chaos in various -deformed SYK models with finite , including the SYK, the supersymmetric SYK, and the SYK models.…
Hall viscosity and hydrodynamic inverse Nernst effect in graphene
Zhuo-Yu Xian, Sven Danz, David Rodríguez Fernández +6
Motivated by Hall viscosity measurements in graphene sheets, we study hydrodynamic transport of electrons in a channel of finite width in external electric and magnetic fields. We…
Black holes Entangled by Radiation
Yuxuan Liu, Zhuo-Yu Xian, Cheng Peng +1
We construct three models to describe the scenario where two eternal black holes are separated by a flat space, and can eventually be entangled by exchanging radiations. In the dou…
Towards Explicit Discrete Holography: Aperiodic Spin Chains from Hyperbolic Tilings
Pablo Basteiro, Giuseppe Di Giulio, Johanna Erdmenger +3
We propose a new example of discrete holography that provides a new step towards establishing the AdS/CFT duality for discrete spaces. A class of boundary Hamiltonians is obtained…
Reflected Entropy in Double Holography
Yi Ling, Peng Liu, Yuxuan Liu +3
Recently, the reflected entropy is proposed in holographic approach to describe the entanglement of a bipartite quantum system in a mixed state, which is identified as the area of…
Island in Charged Black Holes
Yi Ling, Yuxuan Liu, Zhuo-Yu Xian
We study the information paradox for the eternal black hole with charges on a doubly-holographic model in general dimensions, where the charged black hole on a Planck brane is coup…
Complexity growth of operators in the SYK model and in JT gravity
Shao-Kai Jian, Brian Swingle, Zhuo-Yu Xian
The concepts of operator size and computational complexity play important roles in the study of quantum chaos and holographic duality because they help characterize the structure o…
Entanglement Entropy of Annulus in Holographic Thermalization
Yi Ling, Yuxuan Liu, Zhuo-Yu Xian
The thermalization process of the holographic entanglement entropy (HEE) of an annular domain is investigated over the Vaidya-AdS geometry. We numerically determine the Hubeny-Rang…
Wormholes and the Thermodynamic Arrow of Time
Zhuo-Yu Xian, Long Zhao
In classical thermodynamics, heat cannot spontaneously pass from a colder system to a hotter system, which is called the thermodynamic arrow of time. However, if the initial states…