# The relativistic KMS condition for the thermal $n$-point functions of the $P(\varphi)_2$ model

March 18, 2011

Thermal quantum field theories are expected to obey a relativistic KMS
condition, which replaces both the relativistic spectrum condition of Wightman
quantum field theory and the KMS condition, which characterises equilibrium
states in quantum statistical mechanics. In a previous work it has been shown
that the two-point function of the thermal $P(\phi)_2$ model satisfies the
relativistic KMS condition. Here we extend this result to general $n$-point
functions.

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