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A BMS-invariant free fermion model

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arxiv 2211.06927 v2 pith:EZDWAFGW submitted 2022-11-13 hep-th

A BMS-invariant free fermion model

classification hep-th
keywords freemodelfermionsymmetrycarrollianvacuumasymptoticbms-invariant
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We used the Cartan formalism to construct fermionic models that are compatible with Galilean or Carrollian symmetry and rigid scaling symmetry. The free Carrollian fermion model exhibits conformal Carrollian symmetry which is isomorphic to the asymptotic symmetries for flat spacetime in three dimensions, namely the BMS$_3$ symmetry. We performed canonical quantization to this free BMS fermion model, discussed both the highest weight vacuum and the induced vacuum, calculated the correlation functions and the torus partition function. Finally we constructed $\mathcal N=2$ supersymmetric theories by combining the free fermion model and the free scalar model.

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Cited by 7 Pith papers

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

  1. Missing Descendants in the Carrollian Conformal Family

    hep-th 2026-07 conditional novelty 7.0

    Including the missing K0 descendant chain completes Carrollian conformal representations and produces C2>0 sectors and two-point correlators fixed only up to functions of Carrollian invariants.

  2. Carroll fermions, expansions and the lightcone

    hep-th 2026-04 unverdicted novelty 6.0

    Carrollian fermion actions are obtained from relativistic Dirac theory via c-expansion and connected to light-cone dynamics through co-dimension one Carroll subalgebras in the Poincaré algebra.

  3. Carroll hydrodynamics with spin

    hep-th 2026-01 unverdicted novelty 6.0

    Carroll hydrodynamics with spin is obtained as the c→0 limit of relativistic hydrodynamics with spin, extending the description of boost-invariant flows.

  4. Conformal Blocks in 2d Carrollian/Galilean CFTs and Excited State Entanglement Entropy

    hep-th 2025-10 unverdicted novelty 6.0

    Derives heavy-light conformal blocks in 2d C/G CFTs and computes excited-state entanglement entropy via replica trick, finding thermal form that reproduces holographic EE and establishes dictionary between boundary we...

  5. Krylov Complexity: Flat bands and Carroll breaking deformations

    hep-th 2026-06 unverdicted novelty 5.0

    Krylov complexity growth distinguishes phase-dependent resilience of Carrollian sectors in all-bands-flat fermionic ladders against delocalizing perturbations and exhibits UV sensitivity in a continuum Carroll scalar ...

  6. More on Bulk Local State Reconstruction in Flat/Carr CFT

    hep-th 2026-03 unverdicted novelty 5.0

    Bulk local states are built in flat holography via induced representations, with a dual basis resolving 3D bra-ket scaling issues and a tilde basis enabling explicit constructions in higher dimensions that recover the...

  7. The Carrollian Kaleidoscope

    hep-th 2025-06 unverdicted novelty 1.0

    A review summarizing Carrollian symmetries, CCFT constructions, and applications in AFS holography, Carroll hydrodynamics, and condensed matter phenomena such as fractons and flat bands.