125 citations · 179 across the 15 of their papers we have counts for
17 papers · 1 filter
Multipartite Entanglement Can Probe Wormhole Moduli Invisible to Bipartite Entanglement
Takanori Anegawa, Norihiro Iizuka
In a companion paper, we found that near the untwisted point of a four-boundary AdS wormhole, whenever the complete bipartite Ryu-Takayanagi entropy vector is insensitive to a…
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…
Dissipation in the expansion for planar matrix models
Takanori Anegawa, Norihiro Iizuka, Daniel Kabat
We consider the thermal behavior of a large number of matrix degrees of freedom in the planar limit. We work in dimensions, with matrices, and use as an expansion p…
Krylov complexity of fermion chain in double-scaled SYK and power spectrum perspective
Takanori Anegawa, Ryota Watanabe
We investigate Krylov complexity of the fermion chain operator which consists of multiple Majorana fermions in the double-scaled SYK (DSSYK) model with finite temperature. Using th…
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…
Krylov complexity as an order parameter for deconfinement phase transitions at large
Takanori Anegawa, Norihiro Iizuka, Mitsuhiro Nishida
Krylov complexity has been proposed as a diagnostic of chaos in non-integrable lattice and quantum mechanical systems, and if the system is chaotic, Krylov complexity grows exponen…
The local SYK model and its triple scaling limit
Takanori Anegawa, Norihiro Iizuka, Sunil Kumar Sake
We study a model of fermions with random couplings similar to conventional SYK with number of flavours of fermions, at large . Unlike the conventional SYK model, which has a…
Sparse random matrices and Gaussian ensembles with varying randomness
Takanori Anegawa, Norihiro Iizuka, Arkaprava Mukherjee +2
We study a system of qubits with a random Hamiltonian obtained by drawing coupling constants from Gaussian distributions in various ways. This results in a rich class of system…
Shock waves and delay of hyperfast growth in de Sitter complexity
Takanori Anegawa, Norihiro Iizuka
We study the holographic complexity in de Sitter spacetime, especially how the hyperfast growth of holographic complexity in de Sitter spacetime is affected under a small and early…
Late time behavior of -point spectral form factors in Airy and JT gravities
Takanori Anegawa, Norihiro Iizuka, Kazumi Okuyama +1
We study the late time behavior of -point spectral form factors (SFFs) in two-dimensional Witten-Kontsevich topological gravity, which includes both Airy and JT gravities as spe…
Is Action Complexity better for de Sitter space in Jackiw-Teitelboim gravity?
Takanori Anegawa, Norihiro Iizuka, Sunil Kumar Sake +1
Volume complexity in dS remains up to a critical time, after which it suddenly diverges. On the other hand, for the dS solution in JT gravity there is a linear dilat…
Extractable entanglement from a Euclidean hourglass
Takanori Anegawa, Norihiro Iizuka, Daniel Kabat
We previously proposed that entanglement across a planar surface can be obtained from the partition function on a Euclidean hourglass geometry. Here we extend the prescription to s…
Defining entanglement without tensor factoring: a Euclidean hourglass prescription
Takanori Anegawa, Norihiro Iizuka, Daniel Kabat
We consider entanglement across a planar boundary in flat space. Entanglement entropy is usually thought of as the von Neumann entropy of a reduced density matrix, but it can also…
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…
Notes on islands in asymptotically flat 2d dilaton black holes
Takanori Anegawa, Norihiro Iizuka
We study the islands and the Page curve in the 1+1-dimensional eternal dilaton black hole models. Without islands, the entanglement entropy of the radiation grows linearly at late…