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A fruitful avenue in investigating out-of-equilibrium quantum many-body systems is to abruptly change their Hamiltonian and study the subsequent evolution of their quantum state. If this is done once, the setup is called a quench, while if…

高能物理 - 理论 · 物理学 2024-04-12 Hanzhi Jiang , Márk Mezei

We will explore the dynamical property of non-equilibrium phenomena induced by two-dimensional holographic conformal field theory (2d holographic CFT) Hamiltonian on the curved spacetime by studying the time dependence of the entanglement…

高能物理 - 理论 · 物理学 2024-12-31 Chen Bai , Akihiro Miyata , Masahiro Nozaki

In this work, we study non-equilibrium dynamics in Floquet conformal field theories (CFTs) in 1+1D, in which the driving Hamiltonian involves the energy-momentum density spatially modulated by an arbitrary smooth function. This generalizes…

高能物理 - 理论 · 物理学 2021-03-03 Ruihua Fan , Yingfei Gu , Ashvin Vishwanath , Xueda Wen

This paper investigates the dynamical phases of Floquet Conformal Field Theories (CFTs) in space-time dimensions greater than two. Building upon our previous work [1] which introduced quaternionic representations for studying Floquet…

高能物理 - 理论 · 物理学 2026-02-17 Diptarka Das , Sumit R. Das , Arnab Kundu , Krishnendu Sengupta

For two-dimensional conformal field theories driven by evolving background space-time metrics in a closed universe, we present an operator formulation as a driven inhomogeneous CFT. The Hamiltonian of this theory is given by a background…

高能物理 - 理论 · 物理学 2025-10-27 Johanna Erdmenger , Jani Kastikainen , Tim Schuhmann

We find classes of driven conformal field theories (CFT) in d + 1 dimensions with d > 1, whose quench and Floquet dynamics can be computed exactly. The setup is suitable for studying periodic drives, consisting of square pulse protocols for…

高能物理 - 理论 · 物理学 2024-09-23 Diptarka Das , Sumit R. Das , Arnab Kundu , Krishnendu Sengupta

In this paper and its sequel, we study non-equilibrium dynamics in driven 1+1D conformal field theories (CFTs) with periodic, quasi-periodic, and random driving. We study a soluble family of drives in which the Hamiltonian only involves the…

统计力学 · 物理学 2021-04-19 Xueda Wen , Ruihua Fan , Ashvin Vishwanath , Yingfei Gu

We study a three-dimensional holographic CFT under the influence of a background electric field on a spacetime containing two black hole horizons. The electric background is fixed such that there is potential difference between the two…

高能物理 - 理论 · 物理学 2024-05-28 William D. Biggs , Jorge E. Santos

We use holography to examine the response of interacting quantum fields to the appearance of closed timelike curves in a dynamically evolving background that initially does not contain them. For this purpose, we study a family of…

高能物理 - 理论 · 物理学 2022-04-05 Roberto Emparan , Marija Tomašević

We systematically study inhomogeneous Hamiltonians in two-dimensional conformal field theories within the framework of the AdS/CFT correspondence by relating them to two-dimensional curved backgrounds. We propose a classification of…

高能物理 - 理论 · 物理学 2025-03-12 Zhehan Li , Zhifeng Li , Jia Tian

Holographic CFTs and holographic RG flows on space-time manifolds which are $d$-dimensional products of spheres are investigated. On the gravity side, this corresponds to Einstein-dilaton gravity on an asymptotically $AdS_{d+1}$ geometry,…

高能物理 - 理论 · 物理学 2020-05-20 Elias Kiritsis , Francesco Nitti , Edwan Préau

It is argued that free QFT can be defined on the event horizon of a Schwarzschild-like spacetime and that this theory is unitarily and algebraically equivalent to QFT in the bulk (near the horizon). Under that unitary equivalence the bulk…

高能物理 - 理论 · 物理学 2007-05-23 V. Moretti , N. Pinamonti

In this article, we explore the connection between the heating phase of periodically driven CFTs and the Modular Hamiltonian of a subregion in the vacuum state. We show that the heating phase Hamiltonian corresponds to the Modular…

高能物理 - 理论 · 物理学 2024-07-12 Suchetan Das , Bobby Ezhuthachan , Somnath Porey , Baishali Roy

We apply the quantum renormalization group to construct a holographic dual for the U(N) vector model for complex bosons defined on a lattice. The bulk geometry becomes dynamical as the hopping amplitudes which determine connectivity of…

高能物理 - 理论 · 物理学 2015-08-31 Peter Lunts , Subhro Bhattacharjee , Jonah Miller , Erik Schnetter , Yong Baek Kim , Sung-Sik Lee

In this work we study the Tomita-Takesaki construction for a family of excited states that, in a strongly coupled CFT - at large $N$-, correspond to coherent states in an asymptotically AdS spacetime geometry. We compute the modular flow…

高能物理 - 理论 · 物理学 2020-08-05 Raúl Arias , Marcelo Botta-Cantcheff , Pedro J. Martinez , Juan F. Zarate

We consider a thermalization process in a 2-dimensional CFT that has a holographic description in terms of the gravitational collapse of a thin shell of null dust. This model represents a sudden perturbation of the CFT vacuum that…

高能物理 - 理论 · 物理学 2015-05-30 Joao Aparicio , Esperanza Lopez

We describe a numerical method to compute the action of Euclidean saddlepoints for the partition function of a two-dimensional holographic CFT on a Riemann surface of arbitrary genus, with constant curvature metric. We explicitly evaluate…

高能物理 - 理论 · 物理学 2016-05-25 Henry Maxfield , Simon Ross , Benson Way

We study the dynamical evolution of strongly coupled field theories, initially in thermal equilibrium, under the influence of an external driving force. We model the field theory holographically using classical gravitational dynamics in an…

高能物理 - 理论 · 物理学 2015-05-20 Mukund Rangamani , Moshe Rozali , Anson Wong

We identify a horizon-skimming limit under which wave equations around large classes of black holes allow a determination of their low-lying (quasi-)degenerate normal modes. Building on our recent work, we use these ``quantum horizon"…

高能物理 - 理论 · 物理学 2024-10-02 Chethan Krishnan , Pradipta S. Pathak

Driven quantum systems exhibit a large variety of interesting and sometimes exotic phenomena. Of particular interest are driven conformal field theories (CFTs) which describe quantum many-body systems at criticality. In this paper, we…

高能物理 - 理论 · 物理学 2023-09-21 Jan de Boer , Victor Godet , Jani Kastikainen , Esko Keski-Vakkuri
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