Generalized hydrodynamics regime from the thermodynamic bootstrap program

摘要: Within the generalized hydrodynamics (GHD) formalism for quantum integrable models, it is possible to compute simple expressions a number of correlation functions at Eulerian scale. Specializing relativistic field theories, we show same correlators can be computed as sum over form factors, GHD regime corresponding leading contribution with one particle-hole pair on finite energy-density background. The thermodynamic bootstrap program (TBP) was recently introduced an axiomatic approach computing such finite-energy-density factors theories. We derive new axiom within TBP from which easily recover predicted correlators. also higher factor contributions, more pairs, TBP, allowing computation in diffusive, and beyond, regimes. two agree conjectured the~GHD.