Generalize the construction to negative single-trace $T\bar T$ deformation

Generalize the radial-cavity construction to negative single-trace $T\bar T$ deformed CFT, including the regime in which the cavity wall approaches the spacelike singularity of the corresponding bulk geometry.

Background

The paper starts from positive single-trace TTˉT\bar T deformation, whose bulk geometry interpolates between AdS3_3 and a linear-dilaton region. Negative single-trace deformation instead contains a spacelike singularity at finite radial position, raising unresolved questions about placing and moving the cavity wall relative to that singularity.

References

It provides an interesting generalization of our work, since it involves questions like what happens when the wall of the radial cavity approaches the singularity. This too will be left for future work.

— Interpolating between single and double trace $T\bar T$ by moving LST into the bulk  (2609.10823 - Chu et al., 9 Sep 2026) in Section 5, Discussion