English

Locality constraints in AdS$_2$ without parity

High Energy Physics - Theory 2026-02-27 v4 High Energy Physics - Phenomenology

Abstract

We study bulk locality constraints in quantum field theories in AdS2_2. The known derivation of locality sum rules in AdSd+1_{d+1} does not apply for d=1d=1 due to the different singularity structure of the conformal blocks and the inequivalence of operator orderings on the boundary. Assuming unitarity and a mild growth condition, we establish power-law bounds for correlators, derive dispersion relations and an expansion in terms of ``even'' and ``odd'' local blocks that converges in the entire AdS2_2. These yield two novel families of symmetric and antisymmetric locality sum rules. We test these sum rules explicitly in the free scalar field theory.

Keywords

Cite

@article{arxiv.2511.20749,
  title  = {Locality constraints in AdS$_2$ without parity},
  author = {Manuel Loparco and Grégoire Mathys and João Penedones and Jiaxin Qiao and Xiang Zhao},
  journal= {arXiv preprint arXiv:2511.20749},
  year   = {2026}
}

Comments

25 pages + appendix, 5 figures; published version (added and updated discussions, reference added)

R2 v1 2026-07-01T07:54:58.012Z