Thermal Self-Energies Using Light-Front Quantization
Abstract
A recent paper by Alves, Das, and Perez contains a calculation of the one-loop self-energy in φ3 field theory at T≠ 0 using light-front quantization and concludes that the self-energy is different than the conventional answer and is not rotationally invariant. The changes of variables displayed below show that despite the complicated appearance of the thermal self-energy in light-front variables, it is exactly the same as the conventional result.
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