Spectral expansion for finite temperature two-point functions and clustering

  title={Spectral expansion for finite temperature two-point functions and clustering},
  author={Istv'an M. Sz'ecs'enyi and G'abor Tak'acs},
  journal={Journal of Statistical Mechanics: Theory and Experiment},
Recently, the spectral expansion of finite temperature two-point functions in integrable quantum field theories was constructed using a finite volume regularization technique and the application of multidimensional residues. In the present work, the original calculation is revisited. By clarifying some details in the residue evaluations, we find and correct some inaccuracies of the previous result. The final result for contributions involving no more than two particles in the intermediate… Expand

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