Explicit Proof of Equivalence of Two—Point Functions in the Two Formalisms of Thermal Field Theory

We give an explicit proof of equivalence of the two-point function to one-loop order in the two formalisms of thermal theory based on the expressions in the real-time formalism and indicate that the key point of completing the proof is to separate carefully the imaginary part of the zero-temperature loop integral from relevant expressions and this fact will certainly be very useful for examination of the equivalent problem of two formalisms of thermal field theory in other theories, including the one of the propagators for scalar bound states in an NJL model.

邓小平社会发展理论的辩证法特色

邓小平同志建设有中国特色的社会主义理论中蕴含着丰富的社会发展思想，其中最富特色的是深刻的辩证法特征，这种特征主要见之于以下几个方面，一、发展是共性与个性的统一；二、发展是重点论与两点论的统一；三、发展是整体与局部的统一、四发展是连续性与非连续性的统一。