48 citations · 132 across the 11 of their papers we have counts for
11 papers
Matter Coupling of Dirac Matter in the Context of the SYK Model: Non-Gaussian Random Couplings and Bulk Mass Deformations
Pak Hang Chris Lau, Chen-Te Ma, Jeff Murugan +1
We elaborate further on the matter coupling of Dirac matter in the SYK framework, incorporating non-Gaussian coupling distributions and bulk fermion mass effects. Our study analyze…
Gravitational EFT for dissipative open systems
Pak Hang Chris Lau, Kanji Nishii, Toshifumi Noumi
We elaborate on the effective field theory (EFT) construction for dissipative open systems coupled to dynamical gravity, in light of recent developments on the EFT of dissipative h…
Detecting quantum chaos via pseudo-entropy
Song He, Pak Hang Chris Lau, Long Zhao
Quantum informatic quantities such as entanglement entropy are useful in detecting quantum phase transitions. Recently, a new entanglement measure called pseudo-entropy was propose…
On the Backreaction of Dirac Matter in JT Gravity and SYK Model
Pak Hang Chris Lau, Chen-Te Ma, Jeff Murugan +1
We model backreaction in AdS JT gravity via a proposed boundary dual Sachdev-Ye-Kitaev quantum dot coupled to Dirac fermion matter and study it from the perspective of quantum…
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.…
Page curve and symmetries
Pak Hang Chris Lau, Toshifumi Noumi, Yuhei Takii +1
Motivated by the quantum process of black hole evaporation and its implications for symmetries, we consider a qubit system with a random dynamics as a toy model of black hole. We c…
Emergence of Time from Unitary Equivalence
Pak Hang Chris Lau, Chen-Te Ma
We discuss the concept of unitary equivalence between the modular Hamiltonian and the subsystem…
Correlated Disorder in the SYK model
Pak Hang Chris Lau, Chen-Te Ma, Jeff Murugan +1
We study the SYK model of Majorana fermions with random quadratic interactions through a detailed spectral analysis and by coupling the model to 2- and 4-point sources. I…
Randomness and Chaos in Qubit Models
Pak Hang Chris Lau, Chen-Te Ma, Jeff Murugan +1
We introduce randomness into a class of integrable models and study the spectral form factor as a diagnostic to distinguish between randomness and chaos. Spectral form factors exhi…
Chern-Simons 5-form and Holographic Baryons
Pak Hang Chris Lau, Shigeki Sugimoto
In the top-down holographic model of QCD based on D4/D8-branes in type IIA string theory and some of the bottom up models, the low energy effective theory of mesons is described by…
Inspecting non-perturbative contributions to the Entanglement Entropy via wavefunctions
Arpan Bhattacharyya, Ling-Yan Hung, P. H. C. Lau +1
In this paper, we would like to systematically explore the implications of non-perturbative effects on entanglement in a many body system. Instead of pursuing the usual path-integr…