One Loop Calculations on the Wess-zumino-witten Anomalous Functional at Finite Temperature
نویسنده
چکیده
We analyze the finite temperature (T) extension of the WessZumino -Witten functional, discussed in a previous work, to one loop in chiral perturbation theory. As a phenomenological application, we calculate finite temperature corrections to the amplitude of π0 decay into two photons. This calculation is performed in three limits : i) T/Mπ << 1 , ii) the chiral limit at finite T and iii) T/Mπ >> 1 (Mπ being the pion mass). The T -corrections tend to vanish in the chiral limit, where only the kaon contribution remains (although it is exponentially suppressed).
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