$T\bar{T},J\bar{T}$, $T\bar{J}$ Partition Sums From String Theory

Abstract

We calculate the torus partition sum of a general $CF{T}_2$ with left and right moving conserved currents $J$ and $\bar{J}$, perturbed by a combination of the irrelevant operators $T\bar{T}$, $J\bar{T}$ and $T\bar{J}$. We use string theory techniques to write it as an integral transform of the partition sum of the unperturbed CFT with chemical potentials for the left and right moving conserved charges. The resulting expression transforms in the right way under the modular group, and reproduces the known spectrum of these models. We also derive a formula for the partition function of deformed $CF{T}_2$ with non-vanishing chemical potential.

21 pages. v2: Appendix B discussing deformed partition function with non-vanishing chemical potential added

References in corpus (3)

• On space of integrable quantum field theories
• $T\bar{T}$-deformed 2D Quantum Field Theories
• A Solvable Irrelevant Deformation of $Ad{S}_3/CF{T}_2$

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