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We study holographic models related to global quantum quenches in finite size systems. The holographic set up describes naturally a CFT, which we consider on a circle and a sphere. The enhanced symmetry of the conformal group on the circle…

高能物理 - 理论 · 物理学 2015-06-23 Emilia da Silva , Esperanza Lopez , Javier Mas , Alexandre Serantes

If two parties share sufficient entanglement, they are able to implement any channel on a shared bipartite state via non-local quantum computation -- a protocol consisting of local operations and a single simultaneous round of quantum…

量子物理 · 物理学 2022-10-26 Kfir Dolev , Sam Cree

We propose a codimension two holography between a gravitational theory on a $d+1$ dimensional wedge spacetime and a $d-1$ dimensional CFT which lives on the corner of the wedge. Formulating this as a generalization of AdS/CFT, we explain…

高能物理 - 理论 · 物理学 2021-01-21 Ibrahim Akal , Yuya Kusuki , Tadashi Takayanagi , Zixia Wei

We study the evolution and scaling of the entanglement entropy after two types of quenches for a 2+1 field theory, using holographic techniques. We study a thermal quench, dual to the addition of a shell of uncharged matter to four…

高能物理 - 理论 · 物理学 2011-08-11 Tameem Albash , Clifford V. Johnson

In this paper, we present holographic descriptions of entanglement phase transition using AdS/BCFT. First, we analytically calculate the holographic pseudo entropy in the AdS/BCFT model with a brane localized scalar field and show the…

高能物理 - 理论 · 物理学 2024-07-31 Hiroki Kanda , Taishi Kawamoto , Yu-ki Suzuki , Tadashi Takayanagi , Kenya Tasuki , Zixia Wei

In this paper we study the propagation of entanglement entropy after a global instantaneous quench on the CFT boundary of AdS bulk. We consider the Gauss-Bonnet model as a higher curvature gravity model for which we correct the RT(HRT)…

高能物理 - 理论 · 物理学 2018-12-14 Hossein Ghaffarnejad , Emad Yaraie , Mohammad Farsam

We consider the entanglement entropy in 2d conformal field theory in a class of excited states produced by the insertion of a heavy local operator. These include both high-energy eigenstates of the Hamiltonian and time-dependent local…

高能物理 - 理论 · 物理学 2015-03-27 Curtis T. Asplund , Alice Bernamonti , Federico Galli , Thomas Hartman

We characterize the quantum states dual to entanglement wedges in arbitrary spacetimes, in settings where the matter entropy can be neglected compared to the geometric entropy. In AdS/CFT, such states obey special entropy inequalities known…

高能物理 - 理论 · 物理学 2024-04-19 Raphael Bousso , Sami Kaya

We present a gravity dual of local operator quench in a two-dimensional CFT with conformal boundaries. This is given by a massive excitation in a three-dimensional AdS space with the end of the world brane (EOW brane). Due to the…

高能物理 - 理论 · 物理学 2022-05-12 Taishi Kawamoto , Takato Mori , Yu-ki Suzuki , Tadashi Takayanagi , Tomonori Ugajin

The holographic principle, being a generic feature of quantum gravity, should allow for the consideration of dualities other than AdS/CFT. The AdS/BCFT correspondence, in which the dual field theory has local conformal symmetry and is…

高能物理 - 理论 · 物理学 2020-08-20 Sanjit Shashi

We study entanglement entropy after a double local quench in two-dimensional conformal field theories (CFTs), with any central charge $c>1$. In the holographic CFT, such a state with double-excitation is dual to an AdS space with two…

高能物理 - 理论 · 物理学 2020-02-19 Yuya Kusuki , Masamichi Miyaji

In AdS/CFT, there can exist local 2-to-2 bulk scattering processes even when local scattering is not possible on the boundary; these have previously been studied in connection with boundary correlation functions. We show that boundary…

高能物理 - 理论 · 物理学 2020-09-02 Alex May , Geoff Penington , Jonathan Sorce

We study the entanglement contour, a quasi-local measure of entanglement, and propose a generic formula for the contour in 1+1d quantum systems. We use this formalism to investigate the real space entanglement structure of various static…

高能物理 - 理论 · 物理学 2019-07-18 Jonah Kudler-Flam , Ian MacCormack , Shinsei Ryu

We study the entanglement and the energy density of the radiation emitted after a local quench in a boundary conformal field theory. We use the operator product expansion (OPE) to predict the early- and late-time behavior of the…

高能物理 - 理论 · 物理学 2023-06-07 Lorenzo Bianchi , Stefano De Angelis , Marco Meineri

We apply the relation between deep learning (DL) and the AdS/CFT correspondence to a holographic model of QCD. Using a lattice QCD data of the chiral condensate at a finite temperature as our training data, the deep learning procedure…

高能物理 - 理论 · 物理学 2020-02-14 Koji Hashimoto , Sotaro Sugishita , Akinori Tanaka , Akio Tomiya

We study holographic entanglement entropy in four-dimensional quantum gravity with negative cosmological constant. By using the replica trick and evaluating path integrals in the minisuperspace approximation, in conjunction with the…

高能物理 - 理论 · 物理学 2020-04-15 Shinji Hirano

We study the temporal evolution of the circuit complexity after the local quench where two harmonic chains are suddenly joined, choosing the initial state as the reference state. We discuss numerical results for the complexity for the…

高能物理 - 理论 · 物理学 2021-09-10 Giuseppe Di Giulio , Erik Tonni

We study the evolution of holographic complexity of pure and mixed states in $1+1$-dimensional conformal field theory following a local quench using both the "complexity equals volume" (CV) and the "complexity equals action" (CA)…

高能物理 - 理论 · 物理学 2018-08-24 Dmitry S. Ageev , Irina Ya. Aref'eva , Andrey A. Bagrov , Mikhail I. Katsnelson

We posit a geometrical description of the entanglement of purification for subregions in a holographic CFT. The bulk description naturally generalizes the two-party case and leads to interesting inequalities among multi-party entanglements…

高能物理 - 理论 · 物理学 2019-02-27 Ning Bao , Aidan Chatwin-Davies , Grant N. Remmen

We consider the holographic entanglement entropy of $(d+2)$-dimensional semi-local quantum liquids, for which the dual gravity background in the deep interior is $AdS_{2}\times\mathbb{R}^{d}$ multiplied by a warp factor which depends on the…

高能物理 - 理论 · 物理学 2015-06-17 Johanna Erdmenger , Da-Wei Pang , Hansjörg Zeller