Entanglement harvesting in conformal field theory

• URL: http://arxiv.org/abs/2602.07112v1
• Date: Fri, 06 Feb 2026 19:00:01 GMT
• Title: Entanglement harvesting in conformal field theory
• Authors: Kelly Wurtz, Caroline Lima, Robert C. Myers, Eduardo Martín-Martínez,
• Abstract summary: We study entanglement harvesting in general $d$-dimensional conformal field theories.<n>We find that increasing the operator scaling dimension suppresses both negativity and mutual information.<n>For holographic CFTs, we show that bulk effective field theory enables a separation between field-harvested and communication-mediated entanglement.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We study entanglement harvesting in general $d$-dimensional conformal field theories using pointlike Unruh-DeWitt detectors coupled to scalar primary operators. This extends standard harvesting protocols beyond free fields to interacting conformal theories and arbitrary spatial dimensions. We find that increasing the operator scaling dimension suppresses both negativity and mutual information, reflecting the faster decay of correlations. For holographic CFTs, we show that bulk effective field theory enables a separation between field-harvested and communication-mediated entanglement. We also derive asymptotic, closed-form approximations that agree well with numerical results.

Related papers

• Parallel Complex Diffusion for Scalable Time Series Generation [50.01609741902786]
  PaCoDi is a spectral-native architecture that decouples generative modeling in the frequency domain.<n>We show that PaCoDi outperforms existing baselines in both generation quality and inference speed.
  arXiv  Detail & Related papers  (2026-02-10T14:31:53Z)
• Probing holographic conformal field theories [2.857613509526453]
  We introduce an operational, boundary-first framework that embeds relativistic quantum-information protocols into anti-de Sitter/Conformal Field Theory.<n>We compute the detector's reduced density operator perturbatively, retaining both excitation probabilities and coherences.<n>For a CFT dual to global AdS, we show that the harvested mana sharply distinguishes the two admissible scalar quantizations in the Breitenlohner--Freedman window.
  arXiv  Detail & Related papers  (2026-02-08T10:04:52Z)
• Bounds of Chain-of-Thought Robustness: Reasoning Steps, Embed Norms, and Beyond [64.88201012057822]
  Existing research indicates that the output of Chain-of-Thought (CoT) is significantly affected by input perturbations.<n>We theoretically analyze the effect of input perturbations on the fluctuation of CoT outputs.
  arXiv  Detail & Related papers  (2025-09-25T15:04:31Z)
• Detector Based Evaluation of Extractable Entanglement in Flat spacetime [0.0]
  Entanglement entropy is widely used to quantify quantum correlations in field theory.<n>It remains unclear how much of the entanglement is physically extractable via local measurements.
  arXiv  Detail & Related papers  (2025-05-21T16:25:14Z)
• Particle detector models from path integrals of localized quantum fields [0.0]
  We show that the dynamics of any finite number of modes of the probe field is exactly that of a finite number of detectors. This approach vindicates and extends a recently proposed bridge between detector-based and field-theory-based measurement frameworks.
  arXiv  Detail & Related papers  (2023-10-24T18:00:01Z)
• Modeling the space-time correlation of pulsed twin beams [68.8204255655161]
  Entangled twin-beams generated by parametric down-conversion are among the favorite sources for imaging-oriented applications. We propose a semi-analytic model which aims to bridge the gap between time-consuming numerical simulations and the unrealistic plane-wave pump theory.
  arXiv  Detail & Related papers  (2023-01-18T11:29:49Z)
• 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)
• Conformal field theory from lattice fermions [77.34726150561087]
  We provide a rigorous lattice approximation of conformal field theories given in terms of lattice fermions in 1+1-dimensions. We show how these results lead to explicit error estimates pertaining to the quantum simulation of conformal field theories.
  arXiv  Detail & Related papers  (2021-07-29T08:54:07Z)
• Entanglement and Complexity of Purification in (1+1)-dimensional free Conformal Field Theories [55.53519491066413]
  We find pure states in an enlarged Hilbert space that encode the mixed state of a quantum field theory as a partial trace. We analyze these quantities for two intervals in the vacuum of free bosonic and Ising conformal field theories.
  arXiv  Detail & Related papers  (2020-09-24T18:00:13Z)
• The quasi-particle picture and its breakdown after local quenches: mutual information, negativity, and reflected entropy [0.0]
  We study the dynamics of (R'enyi) mutual information, logarithmic negativity, and (R'enyi) reflected entropy after exciting the ground state by a local operator. We are able to conjecture a close-knit structure between the three quantities that emerges in states excited above the vacuum.
  arXiv  Detail & Related papers  (2020-08-25T20:47:05Z)
• Correlation measures and the entanglement wedge cross-section after quantum quenches in two-dimensional conformal field theories [0.0]
  We consider the time evolution of mixed state correlation measures in two-dimensional conformal field theories. We compare rational and irrational conformal field theories. We interpret these results as a signature of information scrambling and chaos in irrational theories.
  arXiv  Detail & Related papers  (2020-01-15T19:00:01Z)

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.