Finite temperature correlation function of two dissipative massive scalar fields: Thermofield approach


Department of Physics, Faculty of Science, Imam Khomeini International University, P.O.Box 34148-96818, Qazvin, Iran


The present paper aims at investigating the manner of two dissipative massive scalar fields. Two massive scalar fields that interact with a reservoir were considered and a reservoir was modeled by continuum Klein-Gordon fields. The Lagrangian of the total system was canonically quantized and the dynamics of the system was determined using the Euler-Lagrange equation. Then, the explicit form of the quantum massive scalar fields in long-time limit were observed. The propagator of the system and correlation functions were calculated at finite temperature in the thermofield dynamics formalizem.


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