Jul 18 – 23, 2022
University of Vienna
Europe/Vienna timezone

Effective field theory with deformed w(1+infinity) algebra on the celestial sphere.

Not scheduled
Audimax (University of Vienna)


University of Vienna

Universitätsring 1, 1010 Vienna, Austria


Lecheng Ren (Brown University)


The material is based on the previous paper 2111.11356 and also a paper to appear collaborating with Anastasia Volovich and Akshay Yellespur. We compute the deformation of the w1+∞ algebra of soft graviton, gluon and scalar currents in the Celestial CFT due to non-minimal couplings. Such deformed algebra shares some similarities with the W(1+infinity) algebra but has essential differences. We find that the Jacobi identity of the algebra, as well as the associativity of the OPE between these soft current operators are satisfied only when the spectrum and couplings of the theory obey certain constraints. We also study the effect of these constraints on the amplitudes in the 4d bulk theory.

Primary author

Lecheng Ren (Brown University)

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