Pith. sign in

Line and surface defects for the free scalar field

9 Pith papers cite this work. Polarity classification is still indexing.

9 Pith papers citing it
abstract

For a single free scalar field in $d \geq 2$ dimensions, almost all the unitary conformal defects must be `trivial' in the sense that they cannot hold interesting dynamics. The only possible exceptions are monodromy defects in $d \geq 4$ and co-dimension three defects in $d \geq 5$. As an intermediate result we show that the $n$-point correlation functions of a conformal theory with a generalized free spectrum must be those of the generalized free theory.

citation-role summary

background 4

citation-polarity summary

fields

hep-th 9

years

2026 8 2025 1

roles

background 4

polarities

background 4

representative citing papers

Monodromy defects in Chern-Simons theory and Holography

hep-th · 2026-07-07 · accept · novelty 8.0

Monodromy defects in charge-conjugation-symmetric Chern-Simons theory are labeled by twisted affine representations, realize a Z2-crossed category, and are holographically dual to orientifolds of the resolved conifold plus branes.

A Twist on Scattering from Defect Anomalies

hep-th · 2026-05-13 · unverdicted · novelty 7.0

Defect 't Hooft anomalies trap charges at symmetry-line junctions and thereby drive categorical scattering into twist operators.

Crosscap Defects

hep-th · 2026-04-21 · unverdicted · novelty 7.0 · 2 refs

Crosscap defects are introduced in CFTs via Z2 quotients, with crossing equations derived and CFT data computed in the O(N) model at Gaussian and Wilson-Fisher points showing absent displacement and tilt operators for generic p.

Aspects of Witten Diagrams for Holographic Defects

hep-th · 2026-06-16 · unverdicted · novelty 6.0

Derives explicit OPE coefficients for contact and exchange Witten diagrams and closed-form defect-to-bulk crossing kernels for zero- and surface defects in specific dimensions.

QFT as a set of ODEs

hep-th · 2026-01-07 · unverdicted · novelty 6.0

Derives universal first-order ODEs governing the RG flow of boundary operator data (scaling dimensions, OPE and BOE coefficients) for 2D QFTs on hyperbolic space.

Conformal Defects in Neural Network Field Theories

hep-th · 2025-12-08 · unverdicted · novelty 6.0

The paper introduces a formalism for constructing conformally invariant defects in Neural Network Field Theories, demonstrates it on two toy scalar models, and provides a neural-network reading of a defect OPE expansion in two-point functions.

Universalities of Defects in Quantum Field Theories

hep-th · 2026-05-20 · unverdicted · novelty 4.0

A dissertation synthesizing universal aspects of defect dynamics in QFT through symmetry principles across defect RG flows, effective strings, and quantum gas impurities.

citing papers explorer

Showing 9 of 9 citing papers.

  • Monodromy defects in Chern-Simons theory and Holography hep-th · 2026-07-07 · accept · none · ref 40 · internal anchor

    Monodromy defects in charge-conjugation-symmetric Chern-Simons theory are labeled by twisted affine representations, realize a Z2-crossed category, and are holographically dual to orientifolds of the resolved conifold plus branes.

  • A Twist on Scattering from Defect Anomalies hep-th · 2026-05-13 · unverdicted · none · ref 3

    Defect 't Hooft anomalies trap charges at symmetry-line junctions and thereby drive categorical scattering into twist operators.

  • Crosscap Defects hep-th · 2026-04-21 · unverdicted · none · ref 35 · 2 links

    Crosscap defects are introduced in CFTs via Z2 quotients, with crossing equations derived and CFT data computed in the O(N) model at Gaussian and Wilson-Fisher points showing absent displacement and tilt operators for generic p.

  • Aspects of Witten Diagrams for Holographic Defects hep-th · 2026-06-16 · unverdicted · none · ref 78

    Derives explicit OPE coefficients for contact and exchange Witten diagrams and closed-form defect-to-bulk crossing kernels for zero- and surface defects in specific dimensions.

  • QFT as a set of ODEs hep-th · 2026-01-07 · unverdicted · none · ref 18

    Derives universal first-order ODEs governing the RG flow of boundary operator data (scaling dimensions, OPE and BOE coefficients) for 2D QFTs on hyperbolic space.

  • Conformal Defects in Neural Network Field Theories hep-th · 2025-12-08 · unverdicted · none · ref 18

    The paper introduces a formalism for constructing conformally invariant defects in Neural Network Field Theories, demonstrates it on two toy scalar models, and provides a neural-network reading of a defect OPE expansion in two-point functions.

  • Monodromy Defects for Electric-Magnetic Duality, Hyperbolic Space, and Lines hep-th · 2026-04-16 · unverdicted · none · ref 3

    Monodromy defects in Maxwell theory are analyzed via mapping to hyperbolic space, recovering the defect primary spectrum and showing that Wilson/'t Hooft lines terminate on defects, become decomposable, and follow Chern-Simons topological behavior.

  • Boundary conformal field theory, holography and bulk locality hep-th · 2026-02-04 · unverdicted · none · ref 15

    One-loop bulk calculations in holographic BCFT with EOW brane yield scalar correlators whose analytic properties are incompatible with boundary conformal symmetry expectations.

  • Universalities of Defects in Quantum Field Theories hep-th · 2026-05-20 · unverdicted · none · ref 45

    A dissertation synthesizing universal aspects of defect dynamics in QFT through symmetry principles across defect RG flows, effective strings, and quantum gas impurities.