161 citations · 906 across the 30 of their papers we have counts for
31 papers
Growing Einstein-Rosen Bridge with Multi-partite Entanglement
Takanori Anegawa, Akihiro Miyata, Shota Suzuki +1
Can quantum entanglement continue to grow even after the entanglement entropies of subsystems have saturated? We address this question using genuine multi-entropy, which probes mul…
Black hole as a multipartite entangler: multi-entropy in AdS/CFT
Takanori Anegawa, Shota Suzuki, Kotaro Tamaoka
We study multipartite entanglement in typical pure states holographically dual to pure BTZ black holes, using multi-entropy and its ``genuine'' version. In the bulk, these quantiti…
Holographic AME states in black hole interiors
Takanori Anegawa, Kotaro Tamaoka
We argue that the special extremal slice inside an AdS black hole is dual to an absolutely maximally entangled (AME) state. We demonstrate this by confirming the -independence o…
Black Hole Singularity and Timelike Entanglement
Takanori Anegawa, Kotaro Tamaoka
We study timelike and conventional entanglement entropy as potential probes of black hole singularities via the AdS/CFT correspondence. Using an analytically tractable example, we…
Hawking-Page and entanglement phase transition in 2d CFT on curved backgrounds
Akihiro Miyata, Masahiro Nozaki, Kotaro Tamaoka +1
The thermodynamics and the entanglement properties of two-dimensional conformal field theories (d CFTs) on curved backgrounds are studied. By means of conformal mapping we study…
Local operator quench induced by two-dimensional inhomogeneous and homogeneous CFT Hamiltonians
Weibo Mao, Masahiro Nozaki, Kotaro Tamaoka +1
We explore non-equilibrium processes in two-dimensional conformal field theories (2d CFTs) due to the growth of operators induced by inhomogeneous and homogeneous Hamiltonians by i…
Inhomogeneous quenches as state preparation in two-dimensional conformal field theories
Masahiro Nozaki, Kotaro Tamaoka, Mao Tian Tan
The non-equilibrium process where the system does not evolve to the featureless state is one of the new central objects in the non-equilibrium phenomena. In this paper, starting fr…
Efficient Simulation of Low Temperature Physics in One-Dimensional Gapless Systems
Yuya Kusuki, Kotaro Tamaoka, Zixia Wei +1
We discuss the computational efficiency of the finite temperature simulation with the minimally entangled typical thermal states (METTS). To argue that METTS can be efficiently rep…
Spatial deformation of many-body quantum chaotic systems and quantum information scrambling
Kanato Goto, Taozhi Guo, Tomoki Nosaka +3
We study the effect of spatial inhomogeneity on quantum information scrambling, a process of spreading and locally hiding quantum information in quantum many-body systems. As a par…
Scrambling and Recovery of Quantum Information in Inhomogeneous Quenches in Two-dimensional Conformal Field Theories
Kanato Goto, Masahiro Nozaki, Shinsei Ryu +2
We study various quantum quench processes induced by the Möbius/sine-square deformation of the Hamiltonian in two-dimensional conformal field theories starting from the thermofield…
Entanglement Dynamics of the Non-Unitary Holographic Channel
Kanato Goto, Masahiro Nozaki, Kotaro Tamaoka +1
We study the dynamical properties of a strongly scrambling quantum circuit involving a projective measurement on a finite-sized region by studying the operator entanglement entropy…
Notes on Pseudo Entropy Amplification
Yutaka Ishiyama, Riku Kojima, Sho Matsui +1
We study pseudo entropy for a particular linear combination of entangled states in qubit systems, two-dimensional free conformal field theories (CFT), and two-dimensional holograph…
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…
Non-Equilibrating a Black Hole with Inhomogeneous Quantum Quench
Kanato Goto, Masahiro Nozaki, Shinsei Ryu +2
We study quantum quench processes in (1+1)-dimensional conformal field theory (CFT) in which the initial thermal equilibrium (Gibbs) state is time-evolved by spatially inhomogeneou…
Information Scrambling Versus Quantum Revival Through the Lens of Operator Entanglement
Kanato Goto, Ali Mollabashi, Masahiro Nozaki +2
In this paper, we look for signatures of quantum revivals in two-dimensional conformal field theories (2d CFTs) on a spatially compact manifold by using operator entanglement. It i…
Subregion Spectrum Form Factor via Pseudo Entropy
Kanato Goto, Masahiro Nozaki, Kotaro Tamaoka
We introduce a subsystem generalization of the spectral form factor via pseudo entropy, the von-Neumann entropy for the reduced transition matrix. We consider a transition matrix b…
Product of Random States and Spatial (Half-)Wormholes
Kanato Goto, Yuya Kusuki, Kotaro Tamaoka +1
We study how coarse-graining procedure of an underlying UV-complete quantum gravity gives rise to a connected geometry. It has been shown, quantum entanglement plays a key role in…
Aspects of Pseudo Entropy in Field Theories
Ali Mollabashi, Noburo Shiba, Tadashi Takayanagi +2
In this article, we explore properties of pseudo entropy [1] in quantum field theories and spin systems from several approaches. Pseudo entropy is a generalization of entanglement…
Wormholes and holographic decoherence
Takanori Anegawa, Norihiro Iizuka, Kotaro Tamaoka +1
We study a class of decoherence process which admits a 3 dimensional holographic bulk. Starting from a thermo-field double dual to a wormhole, we prepare another thermo-field doubl…
Pseudo Entropy in Free Quantum Field Theories
Ali Mollabashi, Noburo Shiba, Tadashi Takayanagi +2
Pseudo entropy is an interesting quantity with a simple gravity dual, which generalizes entanglement entropy such that it depends on both an initial and a final state. Here we reve…
Holographic Pseudo Entropy
Yoshifumi Nakata, Tadashi Takayanagi, Yusuke Taki +2
We introduce a quantity, called pseudo entropy, as a generalization of entanglement entropy via post-selection. In the AdS/CFT correspondence, this quantity is dual to areas of min…
A Field Theory Study of Entanglement Wedge Cross Section: Odd Entropy
Ali Mollabashi, Kotaro Tamaoka
We study odd entanglement entropy (odd entropy in short), a candidate of measure for mixed states holographically dual to the entanglement wedge cross section, in two-dimensional f…
Gravity Edges Modes and Hayward Term
Tadashi Takayanagi, Kotaro Tamaoka
We argue that corner contributions in gravity action (Hayward term) capture the essence of gravity edge modes, which lead to gravitational area entropies, such as the black hole en…
Entanglement Wedge Cross Section from CFT: Dynamics of Local Operator Quench
Yuya Kusuki, Kotaro Tamaoka
We derive dynamics of the entanglement wedge cross section from the reflected entropy for local operator quench states in the holographic CFT. By comparing between the reflected en…