volume 42, issue 6, P1988-1995 1990
DOI: 10.1103/physrevd.42.1988
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Abstract: A new spacetime, 7-5 spacetime, is constructed. The quantum field in 7-5 spacetime is discussed. It is shown that the vacuum state of quantum field in 7-5 spacetime is a thermal state for an inertial observer in Minkowski spacetime, and the vacuum Green's functions in 7-{ spacetime are just the thermal Green's functions in usual statistical mechanics.