Speaker
Description
The TTbar deformation is a remarkable example of a solvable irrelevant deformation in two-dimensional quantum field theory. Its extension to higher dimensions is obstructed by the loss of factorisation and the onset of non-locality.
In this talk, I discuss a class of TTbar-like deformations in $d>2$ formulated directly in terms of the stress-energy tensor. I show how these flows naturally lead to non-linear theories, including Dirac–Nambu–Goto and Born–Infeld–type actions, providing a unified perspective on their structure across dimensions.
These results suggest that stress-tensor deformations offer a general framework to generate and organise non-linear field theories beyond two dimensions, with potential implications for integrability and locality.