Abstract
We consider the out-of-equilibrium transport in TT[over ¯]-deformed (1+1)-dimension conformal field theories (CFTs). The theories admit two disparate approaches, integrability and holography, which we make full use of in order to compute the transport quantities, such as the exact nonequilibrium steady state currents. We find perfect agreements between the results obtained from these two methods, which serve as nontrivial checks of the TT[over ¯]-deformed holographic correspondence from the dynamical standpoint. It turns out that integrability also allows us to compute the momentum diffusion, which is given by a universal formula. We also remark on an intriguing connection between the TT[over ¯]-deformed CFTs and reversible cellular automata.
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