Varying the Unruh Temperature in Integrable Quantum Field Theories

Details Varying the Unruh Temperature in Integrable Quantum Field Theories Varying the Unruh Temperature in Integrable Quantum Field Theories

1998-07-06

arxiv.org/abs/hep-th/9807041v2

Nucl.Phys. B535 (1998) 621-649

Physics

High Energy Physics

High Energy Physics - Theory

34 pages, Latex, 3 Figures, minor changes

Scientific paper

10.1016/S0550-3213(98)00685-3

A computational scheme is developed to determine the response of a quantum field theory (QFT) with a factorized scattering operator under a variation of the Unruh temperature. To this end a new family of integrable systems is introduced, obtained by deforming such QFTs in a way that preserves the bootstrap S-matrix. The deformation parameter \beta plays the role of an inverse temperature for the thermal equilibrium states associated with the Rindler wedge, \beta = 2\pi being the QFT value. The form factor approach provides an explicit computational scheme for the \beta \neq 2\pi systems, enforcing in particular a modification of the underlying kinematical arena. As examples deformed counterparts of the Ising model and the Sinh-Gordon model are considered.

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