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December 22, 2022
Bootstrapping the a-anomaly in 4d QFTs
research article
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.
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Name
JHEP12(2022)136.pdf
Type
Publisher's Version
Access type
openaccess
License Condition
CC BY
Size
1.59 MB
Format
Adobe PDF
Checksum (MD5)
7f5b3a11e0e66ca857513946746f93ee