Holographic Local Operator Quenches with Conserved Momentum and Spin

• URL: http://arxiv.org/abs/2608.19305v1
• Date: Wed, 19 Aug 2026 18:00:00 GMT
• Title: Holographic Local Operator Quenches with Conserved Momentum and Spin
• Abstract summary: We investigate point particles carrying longitudinal momentum or angular momentum in quenchally AdS$_3$ spacetimes to suitably regulated, time-evolved states.<n>We compute the energy density and entanglement entropy in these states and in their dual back-reacted geometries.<n>We explore applications of these setups beyond holography by deriving the evolution of Rényi entropies in 2D rational CFTs.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We investigate the holographic dictionary relating point particles carrying longitudinal momentum or angular momentum in asymptotically AdS$_3$ spacetimes to suitably regulated, time-evolved states created by local primary operators in the dual two-dimensional conformal field theory (2D CFT). We find that asymmetric left/right Euclidean smearing of local operators produces states carrying momentum, and the corresponding bulk excitation is a particle with conserved momentum. We compute the energy density and entanglement entropy in these states and in their dual back-reacted geometries, finding exact agreement between the CFT and gravity descriptions. We further extend this correspondence to particles with intrinsic spin, whose CFT duals are primary operators with unequal holomorphic and anti-holomorphic scaling dimensions. We again find a precise match between CFT and holographic calculations of energy densities and entanglement entropies. Finally, we explore applications of these setups beyond holography by deriving the evolution of Rényi entropies in 2D rational CFTs and introducing a new class of local quantum quench protocols with conserved longitudinal or angular momentum.

Related papers

• de Sitter holography from a Lorentzian torus [0.027961972519572442]
  We show that the quantum entanglement between conformal field theories (CFTs) living on the future and past boundaries can be described by Wick rotating to a geometry with two timelike directions.<n>We propose a new realization of the dS/CFT correspondence in which quantum gravity on this two-time geometry is holographically dual to a CFT defined on a Lorentzian torus.
  arXiv  Detail & Related papers  (2026-08-03T05:53:29Z)
• Entangled quantum clocks as operational probes of spacetime curvature [41.99844472131922]
  We study two localized nonrelativistic quantum particles propagating along timelike geodesics in a curved spacetime background.<n>We compute the covariance of the resulting time observables for separable and entangled two-particle states.<n>We show that spacetime curvature can modify operationally defined quantum correlations.
  arXiv  Detail & Related papers  (2026-07-07T00:58:35Z)
• Quantum Ising Model on $(2+1)-$Dimensional Anti$-$de Sitter Space using Tensor Networks [37.108493798440655]
  We study the quantum Ising model on (2+1)-dimensional anti-de Sitter space using Matrix Product States (MPS) and Matrix Product Operators (MPOs)<n>Our spatial lattices correspond to regular tessellations of hyperbolic space with coordination number seven.<n>We find the ground state of this model using the Density Matrix Renormalization Group (DMRG) algorithm which allowed us to probe lattices that range in size up to 232 sites.
  arXiv  Detail & Related papers  (2025-12-23T23:29:39Z)
• Conformal Blocks in 2d Carrollian/Galilean CFTs and Excited State Entanglement Entropy [0.0]
  We advance the study of flat space holography by computing the entanglement entropy of highly excited states in two-dimensional Carrollian/Galilean Conformal Field Theories.<n>Our approach is centered on a novel, physically intuitive derivation of the heavy-light conformal block in the large central charge limit.<n>Using this result and the replica trick, we find that the entanglement entropy of highly excited states assumes a thermal form.
  arXiv  Detail & Related papers  (2025-10-29T16:54:11Z)
• Driven inhomogeneous CFT as a theory in curved space-time [0.0]
  We present an operator formulation as a driven inhomogeneous CFT.<n>The unitary evolution generated by the background metric coincides with that of a Virasoro quantum circuit.<n>We derive the holographic dual of the driven CFT in three-dimensional gravity.
  arXiv  Detail & Related papers  (2025-08-25T18:00:02Z)
• Time Ordering Effects and Destruction of Quasiparticles in Two-dimensional Holographic CFTs [1.1510009152620668]
  We find that the time ordering of Euclidean and Lorentzian time evolutions affects the behavior of bipartite entanglement and non-local correlation.<n>We also examine how the decay of the quasiparticle influences the bipartite entanglement and non-local correlation.
  arXiv  Detail & Related papers  (2025-08-11T05:56:01Z)
• Temporal Entanglement from Holographic Entanglement Entropy [44.99833362998488]
  We propose a systematic prescription to characterize temporal entanglement in quantum field theory.<n>For holographic quantum field theories, our prescription amounts to an analytic continuation of all co-dimension-two bulk extremal surfaces.<n>We show that it leads to results with self-consistent physical properties of temporal entanglement.
  arXiv  Detail & Related papers  (2025-07-23T18:14:21Z)
• Hawking-Page and entanglement phase transition in 2d CFT on curved backgrounds [1.374949083138427]
  Two-dimensional conformal field theories ($2$d CFTs) on curved backgrounds are studied. By means of conformal mapping we study the equivalent system on flat space governed by the deformed Hamiltonian. We observe Hawking-Page like phase transition for the thermal and the entanglement entropy as we vary the background metric.
  arXiv  Detail & Related papers  (2024-06-10T09:16:21Z)
• From locality to irregularity: Introducing local quenches in massive scalar field theory [68.8204255655161]
  We consider the dynamics of excited local states in massive scalar field theory in an arbitrary spacetime dimension. We identify different regimes of their evolution depending on the values of the field mass and the quench regularization parameter. We also investigate the local quenches in massive scalar field theory on a cylinder and show that they cause an erratic and chaotic-like evolution of observables.
  arXiv  Detail & Related papers  (2022-05-24T18:00:07Z)
• Neural-Network Quantum States for Periodic Systems in Continuous Space [66.03977113919439]
  We introduce a family of neural quantum states for the simulation of strongly interacting systems in the presence of periodicity. For one-dimensional systems we find very precise estimations of the ground-state energies and the radial distribution functions of the particles. In two dimensions we obtain good estimations of the ground-state energies, comparable to results obtained from more conventional methods.
  arXiv  Detail & Related papers  (2021-12-22T15:27:30Z)
• Entanglement dynamics of spins using a few complex trajectories [77.34726150561087]
  We consider two spins initially prepared in a product of coherent states and study their entanglement dynamics. We adopt an approach that allowed the derivation of a semiclassical formula for the linear entropy of the reduced density operator.
  arXiv  Detail & Related papers  (2021-08-13T01:44:24Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.