332 citations · 2.8k across the 55 of their papers we have counts for
27 papers · 1 filter
Bootstrapping Heisenberg Magnets and their Cubic Instability
Shai M. Chester, Walter Landry, Junyu Liu +4
We study the critical model using the numerical conformal bootstrap. In particular, we use a recently developed cutting-surface algorithm to efficiently map out the allowed…
Quantum simulation of gauge theory via orbifold lattice
Alexander J. Buser, Hrant Gharibyan, Masanori Hanada +2
We propose a new framework for simulating Yang-Mills theory on a universal quantum computer. This construction uses the orbifold lattice formulation proposed by Kapla…
Toward simulating Superstring/M-theory on a quantum computer
Hrant Gharibyan, Masanori Hanada, Masazumi Honda +1
We present a novel framework for simulating matrix models on a quantum computer. Supersymmetric matrix models have natural applications to superstring/M-theory and gravitational ph…
The Lorentzian inversion formula and the spectrum of the 3d O(2) CFT
Junyu Liu, David Meltzer, David Poland +1
We study the spectrum and OPE coefficients of the three-dimensional critical O(2) model, using four-point functions of the leading scalars with charges 0, 1, and 2 (, , and $…
Quantum simulation of quantum field theories as quantum chemistry
Junyu Liu, Yuan Xin
Conformal truncation is a powerful numerical method for solving generic strongly-coupled quantum field theories based on purely field-theoretic technics without introducing lattice…
Carving out OPE space and precise model critical exponents
Shai M. Chester, Walter Landry, Junyu Liu +4
We develop new tools for isolating CFTs using the numerical bootstrap. A "cutting surface" algorithm for scanning OPE coefficients makes it possible to find islands in high-dimensi…
and EE, with implications for (A)dS subregion encodings
Aitor Lewkowycz, Junyu Liu, Eva Silverstein +1
We initiate a study of subregion dualities, entropy, and redundant encoding of bulk points in holographic theories deformed by and its generalizations. This includes bot…
Entropy Bounds on Effective Field Theory from Rotating Dyonic Black Holes
Clifford Cheung, Junyu Liu, Grant N. Remmen
We derive new bounds on higher-dimension operator coefficients in four-dimensional Einstein-Maxwell theory. Positivity of classically-generated corrections to the Wald entropy of t…
Note on global symmetry and SYK model
Junyu Liu, Yehao Zhou
The goal of this note is to explore the behavior of effective action in the SYK model with general continuous global symmetries. A global symmetry will decompose the whole Hamilton…
Quantum algorithms for conformal bootstrap
Ning Bao, Junyu Liu
With the help of recent developments in quantum algorithms for semidefinite programming, we discuss the possibility for quantum speedup for the numerical conformal bootstrap in con…
-dimensional SYK, AdS Loops, and Symbols
Junyu Liu, Eric Perlmutter, Vladimir Rosenhaus +1
We study the symbol for the conformal group, and its appearance in three seemingly unrelated contexts: the SYK model, conformal representation theory, and perturbative amplitu…
Spectral form factors and late time quantum chaos
Junyu Liu
This is a collection of notes that are about spectral form factors of standard ensembles in the random matrix theory, written for the practical usage of current study of late time…
Quantum complexity and the virial theorem
Ning Bao, Junyu Liu
It is conjectured that in the geometric formulation of quantum computing, one can study quantum complexity through classical entropy of statistical ensembles established non-relati…
Cutoff AdS versus the deformation
Per Kraus, Junyu Liu, Donald Marolf
A recent proposal relates two dimensional holographic conformal field theories deformed by the integrable flow to AdS with a finite radial cutoff. We investigate thi…
Proof of the Weak Gravity Conjecture from Black Hole Entropy
Clifford Cheung, Junyu Liu, Grant N. Remmen
We prove that higher-dimension operators contribute positively to the entropy of a thermodynamically stable black hole at fixed mass and charge. Our results apply whenever the domi…
Note on Green Function Formalism and Topological Invariants
Yehao Zhou, Junyu Liu
It has been discovered previously that the topological order parameter could be identified from the topological data of the Green's function, namely the (generalized) TKNN invarian…
Chaos and random matrices in supersymmetric SYK
Nicholas Hunter-Jones, Junyu Liu
We use random matrix theory to explore late-time chaos in supersymmetric quantum mechanical systems. Motivated by the recent study of supersymmetric SYK models and their random mat…
On thermalization in the SYK and supersymmetric SYK models
Nicholas Hunter-Jones, Junyu Liu, Yehao Zhou
The eigenstate thermalization hypothesis is a compelling conjecture which strives to explain the apparent thermal behavior of generic observables in closed quantum systems. Althoug…
Artificial Neural Network in Cosmic Landscape
Junyu Liu
In this paper we propose that artificial neural network, the basis of machine learning, is useful to generate the inflationary landscape from a cosmological point of view. Traditio…
Chaos, Complexity, and Random Matrices
Jordan Cotler, Nicholas Hunter-Jones, Junyu Liu +1
Chaos and complexity entail an entropic and computational obstruction to describing a system, and thus are intrinsically difficult to characterize. In this paper, we consider time…
Supersymmetric SYK model and random matrix theory
Tianlin Li, Junyu Liu, Yuan Xin +1
In this paper, we investigate the effect of supersymmetry on the symmetry classification of random matrix theory ensembles. We mainly consider the random matrix behaviors in the $\…
Holographic Preheating: Quasi-Normal Modes and Holographic Renormalization
Yi-Fu Cai, Shu Lin, Junyu Liu +1
In the holographic description of cosmic preheating proposed in an accompanied Letter [1], the energy transfer between the inflaton and matter field at strong coupling is suggested…
Holographic Preheating
Yi-Fu Cai, Shu Lin, Junyu Liu +1
We propose a holographic description of cosmic preheating at strong coupling. In this scenario the energy transfer between the inflaton and matter field is mimicked by a model of h…
Cosmic Decoherence: Massive Fields
Junyu Liu, Chon-Man Sou, Yi Wang
We study the decoherence of massive fields during inflation based on the Zurek's density matrix approach. With the cubic interaction between inflaton and massive fields, the reduce…