Electromagnetic pion form factor at finite temperature
C. A. Dominguez, M. Loewe, J. S. Rozowsky
Abstract
The electromagnetic form factor of the pion in the space-like region, and at finite temperature, Fπ(Q2,T), is obtained from a QCD Finite Energy Sum Rule. The form factor decreases with increasing T, and vanishes at some critical temperature, where the pion radius diverges. This divergence may be interpreted as a signal for quark deconfinement.
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