检索结果-内蒙古大学图书馆

Holographic Dissipative Spacetime Supersolids

Physical Review Letters 2023年第22期131卷 221601-221601页

作者： Peng Yang Matteo Baggioli Zi Cai Yu Tian Hongbao Zhang School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China Wilczek Quantum Center School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Shanghai Research Center for Quantum Sciences Shanghai 201315 China Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China Department of Physics Beijing Normal University Beijing 100875 China

Driving a system out of equilibrium enriches the paradigm of spontaneous symmetry breaking, which could then take place not only in space but also in time. The interplay between temporal and spatial symmetries, as well as symmetries from other internal degrees of freedom, can give rise to novel nonequilibrium phases of matter. In this Letter, we investigate a driven-dissipative superfluid model using holographic methods and reveal the existence of a spacetime supersolid (STS) phase that concomitantly breaks the time translation, spatial translation, and the internal U(1) symmetry. The holographic methods naturally include finite temperature effects, which enables us to explore the complex phase diagram of this model and observe a cascade of out-of-equilibrium phase transitions from the STS phase to a synchronized superfluid phase, and finally to a normal fluid phase, by increasing the temperature.

关键词： Gauge-gravity dualities Time crystals Supersolids Field & string theory models & techniques string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

Rotational holographic transport from Kerr-Newman-AdS black hole

引用

Physical Review D 2024年第4期110卷 046004-046004页

作者： Pedro Meert Horatiu Nastase Instituto de Física Teórica UNESP-Universidade Estadual Paulista

We consider rotational holographic transport in strongly coupled 2+1-dimensional systems, from the point of view of 3+1-dimensional gravity. We consider the moment of inertia I as a kind of transport coefficient, identified with the moment of inertia of a charged rotating black hole in AdS4 background. In the low-temperature region, we find the behavior of the density I/A with temperature T and angular velocity Ω and find a quadratic behavior for ∂(I/A)/∂Ω with T, in the presence of some charge Q.

关键词： Classical black holes Gauge-gravity dualities string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

Path integral for chord diagrams and chaotic-integrable transitions in double scaled SYK

引用

Physical Review D 2024年第10期110卷 106015-106015页

作者： Micha Berkooz Nadav Brukner Yiyang Jia ((贾抑扬)) Ohad Mamroud Department of Particle Physics and Astrophysics Weizmann Institute of Science Rehovot 7610001 Israel SISSA via Bonomea 265 34136 Trieste Italy INFN Sezione di Trieste Via Valerio 2 34127 Trieste Italy

We study transitions from chaotic to integrable Hamiltonians in the double scaled Sachdev-Ye-Kitaev (SYK) and p-spin systems. The dynamics of our models is described by chord diagrams with two species. We begin by developing a path integral formalism of coarse graining chord diagrams with a single species of chords, which has the same equations of motion as the bilocal (GΣ) Liouville action, yet appears otherwise to be different and in particular well defined. We then develop a similar formalism for two types of chords, allowing us to study different types of deformations of double scaled SYK and in particular a deformation by an integrable Hamiltonian. The system has two distinct thermodynamic phases: one is continuously connected to the chaotic SYK Hamiltonian, the other is continuously connected to the integrable Hamiltonian, separated at low temperature by a first order phase transition. We also analyze the phase diagram for generic deformations, which in some cases includes a zero-temperature phase transition.

关键词： Quantum chaos Sachdev-Ye-Kitaev model string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

Critical and near-critical relaxation of holographic superfluids

引用

Physical Review D 2024年第2期110卷 026019-026019页

作者： Mario Flory Sebastian Grieninger Sergio Morales-Tejera Institute of Theoretical Physics c/ Nicolás Cabrera 13-15 28049 Madrid Spain Center for Nuclear Theory Department of Physics and Astronomy Departamento de Física Teórica

We investigate the relaxation of holographic superfluids after quenches, when the end state is either tuned to be exactly at the critical point, or very close to it. By solving the bulk equations of motion numerically, we demonstrate that in the former case the system exhibits a power law falloff, as well as an emergent discrete scale invariance. The latter case is in the regime dominated by critical slowing down, and we show that there is an intermediate time range before the onset of late-time exponential falloff, where the system behaves similarly to the critical point with its power law falloff. We further postulate a phenomenological Gross-Pitaevskii-like equation (corresponding to model F of Hohenberg and Halperin) that is able to make quantitative predictions for the behavior of the holographic superfluid after near-critical quenches into the superfluid and normal phase. Intriguingly, all parameters of our phenomenological equation, which describes the nonlinear time evolution, may be fixed with information from the static equilibrium solutions and linear response theory.

关键词： Critical phenomena Dynamic critical phenomena Gauge-gravity dualities Phase transitions Second order phase transitions Spontaneous symmetry breaking string theory techniques in condensed matter Superfluidity

来源：评论

学校读者我要写书评

暂无评论

Example of the convergence of hydrodynamics in strong external fields

引用

Physical Review D 2024年第2期110卷 026021-026021页

作者： Casey Cartwright Institute for Theoretical Physics Utrecht University

The anti-de-Sitter/conformal field theory (AdS/CFT) correspondence is used to provide an estimate of the radius of convergence of the linearized gradient expansion of the hydrodynamic description of N=4 supersymmetric Yang-Mills (SYM) theory minimally coupled to U(1) gauge theory subjected to strong magnetic fields. The results of this work demonstrate that the dispersion relations of hydrodynamic modes continue to converge for magnetic field strengths far beyond those values for which a hydrodynamic description is expected. For magnetic field strengths much larger then the temperature scale the bulk dual interpolates between AdS4+1 and the product of a Bañados-Teitelboim-Zanelli (BTZ) black hole and a two dimensional manifold (BTZ2+1×R2) and may be regarded as a renormalization group flow of the 3+1 dimensional CFT to a 1+1 dimensional CFT. In this regime, we clarify past literature on the quasi-normal mode (QNM) spectrum of bulk scalar fields by introducing a new way to classify the behavior of QNM collisions in the complex frequency and momentum plane.

关键词： Finite temperature field theory Gauge-gravity dualities Relativistic heavy-ion collisions Transport phenomena Relativistic hydrodynamics string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

Pseudoentropy in dS/CFT and Timelike Entanglement Entropy

引用

Physical Review Letters 2023年第3期130卷 031601-031601页

作者： Kazuki Doi Jonathan Harper Ali Mollabashi Tadashi Takayanagi Yusuke Taki Center for Gravitational Physics Yukawa Institute for Theoretical Physics Kyoto University Kitashirakawa Oiwakecho Sakyo-ku Kyoto 606-8502 Japan Inamori Research Institute for Science 620 Suiginya-cho Shimogyo-ku Kyoto 600-8411 Japan Kavli Institute for the Physics and Mathematics of the Universe University of Tokyo Kashiwa Chiba 277-8582 Japan

We study holographic entanglement entropy in dS/CFT and introduce timelike entanglement entropy in CFTs. Both of them take complex values in general and are related with each other via an analytical continuation. We argue that they are correctly understood as pseudoentropy. We find that the imaginary part of pseudoentropy implies an emergence of time in dS/CFT.

关键词： Entanglement in field theory Gauge-gravity dualities string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

Inability of linear axion holographic Gubser-Rocha model to capture all the transport anomalies of strange metals

引用

Physical Review B 2023年第23期108卷 235104-235104页

作者： Yongjun Ahn Matteo Baggioli Hyun-Sik Jeong Keun-Young Kim Wilczek Quantum Center School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Shanghai Research Center for Quantum Sciences Shanghai 201315 China Instituto de Física Teórica UAM/CSIC Calle Nicolás Cabrera 13-15 28049 Madrid Spain Departamento de Física Teórica Universidad Autónoma de Madrid Campus de Cantoblanco 28049 Madrid Spain Department of Physics and Photon Science Gwangju Institute of Science and Technology 123 Cheomdan-gwagiro Gwangju 61005 Korea Research Center for Photon Science Technology Gwangju Institute of Science and Technology 123 Cheomdan-gwagiro Gwangju 61005 Korea

In the last decade, motivated by the concept of Planckian relaxation and the possible existence of a quantum critical point in cuprate materials, holographic techniques have been extensively used to tackle the problem of strange metals and high-Tc superconductors. Among the various setups, the linear axion Gubser-Rocha model has often been considered as a promising holographic model for strange metals since it is endowed with the famous linear in T resistivity property. As fiercely advocated by Anderson, beyond T-linear resistivity, there are several additional anomalies unique to the strange metal phase, for example, a Fermi-liquid-like Hall angle—the famous problem of two relaxation scales. In this paper, we show that the linear axion holographic Gubser-Rocha model, which presents a single momentum relaxation time, fails in this respect and therefore is not able to capture the transport phenomenology of strange metals. We prove our statement by means of a direct numerical computation, a previously demonstrated scaling analysis, and also a hydrodynamic argument. Finally, we conclude with an optimistic discussion of the possible improvements and generalizations which could lead to a holographic model for strange metals in all their glory.

关键词： Cuprates Strongly correlated systems string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

Colloquium: Hydrodynamics and holography of charge density wave phases

引用

Reviews of Modern Physics 2023年第1期95卷 011001-011001页

作者： Matteo Baggioli Blaise Goutéraux Wilczek Quantum Center School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China and Shanghai Research Center for Quantum Sciences Shanghai 201315 China CPHT CNRS École Polytechnique IP Paris F-91128 Palaiseau France

The Colloquium reviews recent progress in the effective description of strongly correlated phases of matter with spontaneously broken translations, such as charge density waves or Wigner crystals. In real materials, disorder is inevitable and pins the Goldstones of broken translations. The Colloquium describes how pinning can be incorporated into the effective field theory at low energies without making any assumptions on the presence of boost symmetry. The essential role played by gauge-gravity duality models in establishing these effective field theories with only approximate symmetries is reviewed. The Colloquium closes with a discussion on the relevance of these models to the phenomenology of dc and ac transport in strongly correlated strange and bad metals, such as high-temperature superconductors.

关键词： Charge density waves Effective field theory Spontaneous symmetry breaking Hydrodynamics string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

Interface dynamics of strongly interacting binary superfluids

引用

Physical Review D 2024年第10期109卷 106022-106022页

作者： Yu-Ping An Li Li Chuan-Yin Xia Hua-Bi Zeng CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 China Peng Huanwu Collaborative Center for Research and Education Beihang University Beijing 100191 China Center for Theoretical Physics Hainan University Haikou 570228 China Center for Gravitation and Cosmology College of Physical Science and Technology Yangzhou University Yangzhou 225009 China

Understanding the interface dynamics in nonequilibrium quantum systems remains a challenge. We study the interface dynamics of strongly coupled immiscible binary superfluids by using holographic duality. The full nonlinear evolution of the binary superfluids with a relative velocity shows rich nonlinear patterns toward quantum turbulence, which is reminiscent of the quantum Kelvin-Helmholtz instability. The wave number of the fastest growing modes k0 extracted from the interface pattern yields a nonmonotonic dependence of the relative velocity, independent of the temperature and interaction. The value of k0 first increases with the velocity difference and then decreases, which stands in sharp contrast to the results of mean-field theory described by the Gross-Pitaevskii equation and is confirmed by using the linear analyses on top of the stationary configuration. We uncover that the critical velocity associated with the maximum corresponds to the case when the mean separation of vortices generated by interface instabilities becomes comparable to the vortex size, which could be a universal physical mechanism at strongly interacting superfluids and is directly testable in laboratory experiments.

关键词： Gauge-gravity dualities Superfluidity Interfaces Superfluids string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

Renormalization group flow to effective quantum mechanics in the IR in an emergent dual holographic description for spontaneous chiral symmetry breaking

引用

Physical Review D 2023年第6期107卷 066004-066004页

作者： Ki-Seok Kim Mitsuhiro Nishida Yoonseok Choun Department of Physics POSTECH Pohang Gyeongbuk 37673 Korea Asia Pacific Center for Theoretical Physics (APCTP) Pohang Gyeongbuk 37673 Korea

Implementing the Wilsonian renormalization group (RG) transformation in a nonperturbative way, we construct an effective holographic dual description with an emergent extradimension identified with an RG scale. Taking the large-N limit, we obtain an equation of motion of an order-parameter field, here the chiral condensate for our explicit demonstration. In particular, an intertwined structure manifests between the first-order RG flow equations of renormalized coupling functions and the second-order differential equation of the order-parameter field, thus referred to as a nonperturbative RG-improved mean-field theory. Assuming translational symmetry as a vacuum state, we solve these nonlinear coupled mean-field equations based on a matching method between UV- and IR-regional solutions. As a result, we find an RG flow from a weakly coupled chiral-symmetric UV fixed point to a strongly correlated chiral-symmetry broken IR fixed point, where the renormalized velocity of Dirac fermions vanishes most rapidly and effective quantum mechanics appears at IR. Furthermore, we translate these RG flows of coupling functions into those of emergent metric tensors and extract out geometrical properties of the emergent holographic spacetime constructed from the UV- and IR-regional solutions. Surprisingly, we obtain the volume law of entanglement entropy in the Ryu-Takayanagi formula, which implies appearance of a black hole type solution in the limit of infinite cutoff even at zero temperature. We critically discuss our field theoretic interpretation for this solution in terms of potentially gapless multiparticle excitation spectra.

关键词： Bethe-Salpeter equation Classical solutions in field theory Critical phenomena Effective field theory Entanglement in field theory Field & string theory models & techniques Gauge-gravity dualities Magnetic phase transitions Path integrals Phase transitions Quantum fields in curved spacetime Quantum phase transitions Renormalization group Spontaneous symmetry breaking string theory techniques in condensed matter

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：