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Hall effects in Carroll dynamics

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arxiv 2212.02360 v4 pith:XJE5D4RA submitted 2022-12-05 hep-th cond-mat.othergr-qc

Hall effects in Carroll dynamics

classification hep-th cond-mat.othergr-qc
keywords carrollparticleextendedhallmasslessmoveanyonicanyons
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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``Do Carroll particles move?'' The answer depends on the characteristics of the particle such as its mass, spin, electric charge, and magnetic moment. A massive Carroll particle (closely related to fractons) does not move; its immobility follows from Carroll boost symmetry which implies dipole conservation, but not conversely. A massless Carroll particle may propagate by following the Hall law, consistently with the partial breaking of the Carroll boost symmetry. The framework is extended to Carroll field theory. In $d=2$ space dimensions, the Carroll group has a two-fold central extension which allows us to generalize the dynamics to massive and massless particles, including anyons. The anyonic spin and magnetic moment combine with the doubly-extended structure parameterized by two Casimir invariants interpreted as intrinsic magnetization and non-commutativity parameter. The extended Carroll particle subjected to an electromagnetic background field moves following a generalized Hall law which includes a Zeeman force. This theory is illustrated by massless, uncharged anyons with doubly-centrally extended structure we call exotic photons, which move on the horizon of a Black Hole, giving rise to an anyonic spin-Hall Effect.

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Cited by 9 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Statistical Physics of Planar Carroll Systems

    math-ph 2026-06 unverdicted novelty 7.0

    Planar Carrollian statistical physics is well-defined thanks to central extensions and rotation, yielding logarithmic entropy scaling with disc area and two-dimensional ideal-gas pressure.

  2. Carrollian quantum states and flat space holography

    hep-th 2026-04 conditional novelty 7.0

    Free Carrollian quantum field theories admit well-defined vacuum and KMS states via algebraic methods, with massless theories requiring nonregular states whose Hilbert spaces factorize into Fock and nonseparable zero-...

  3. Carrollian quantum states and flat space holography

    hep-th 2026-04 unverdicted novelty 7.0

    Carrollian QFTs from scalar limits admit regular invariant vacua and KMS states only in the massive electric sector; a factorizing quasifree state is constructed for flat-space holography isolating nonseparable zero modes.

  4. BMS$_3$ invariant field theories

    hep-th 2026-07 accept novelty 6.0

    New BMS3-invariant 2D scalar theories (electric, magnetic, canonical, coupled) with boundary analysis, flux laws, monodromy matching to 3D gravity, and complementary AdS3/dS3 flat limits.

  5. Post-Carroll Algebra, Conformal Extensions, and Field Theories

    hep-th 2026-06 unverdicted novelty 6.0

    Introduces the post-Carroll algebra and its conformal extensions, including the Carroll-Schrödinger algebra, and computes two-point functions in post-Carrollian CFTs.

  6. Kerroll black holes

    hep-th 2026-05 unverdicted novelty 6.0

    Rotating black holes are constructed in magnetic Carroll gravity, including an intrinsically Carrollian dressed solution and a Kerroll black hole from an odd-power c-expansion of GR, with conserved charges computed.

  7. Kerroll black holes

    hep-th 2026-05 unverdicted novelty 6.0

    Rotating black holes are constructed in Carroll gravity via connection freedom and an odd-power GR expansion, yielding an intrinsically Carrollian rotating solution and the Kerroll black hole analog.

  8. Carroll fermions from null reduction: A case of good and bad fermions

    hep-th 2026-05 unverdicted novelty 6.0

    Carrollian fermionic actions for electric and magnetic sectors are derived from a single Bargmann Dirac action by null reduction, with good and bad fermions as dynamical and constrained modes valid in any dimension.

  9. Post-Carroll Algebra, Conformal Extensions, and Field Theories

    hep-th 2026-06 unverdicted novelty 5.0

    Defines post-Carroll algebra allowing central charges in higher dimensions, constructs its conformal extension and the Carroll-Schrödinger algebra matching prior theory, and derives two-point functions in post-Carroll...