We study gapped 4d quantum field theories (QFTs) obtained from a relevant deformation of a UV conformal field theory (CFT). For simplicity, we assume the existence of a Z(2) symmetry and a single Z2-odd stable particle and no Z(2)-even particles at low energies. Using unitarity, crossing and the assumption of maximal analyticity we compute numerically a lower bound on the value of the a-anomaly of the UV CFT as a function of various non-perturbative parameters describing the two-to-two scattering amplitude of the particle.

Bootstrapping the a-anomaly in 4d QFTs / Karateev, Denis; Marucha, Jan; Penedones, João; Sahoo, Biswajit. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2022:12(2022), pp. 1-61. [10.1007/jhep12(2022)136]

Bootstrapping the a-anomaly in 4d QFTs

Karateev, Denis;
2022-01-01

Abstract

We study gapped 4d quantum field theories (QFTs) obtained from a relevant deformation of a UV conformal field theory (CFT). For simplicity, we assume the existence of a Z(2) symmetry and a single Z2-odd stable particle and no Z(2)-even particles at low energies. Using unitarity, crossing and the assumption of maximal analyticity we compute numerically a lower bound on the value of the a-anomaly of the UV CFT as a function of various non-perturbative parameters describing the two-to-two scattering amplitude of the particle.
2022
2022
12
1
61
136
https://doi.org/10.1007/JHEP12(2022)136
https://arxiv.org/abs/2204.01786
Karateev, Denis; Marucha, Jan; Penedones, João; Sahoo, Biswajit
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/142058
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