Bremsstrahlung Radiative Correction in QED at Finite Temperature

XIAO Jun; WANG En-Ke

Chinese Physics C> 2001, Vol. 25> Issue(8) : 772-779

Bremsstrahlung Radiative Correction in QED at Finite Temperature

XIAO Jun ^, ,
WANG En-Ke

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

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Abstract：
Based fully on the finite temperature field theory, we calculate the Feynman diagram to analyse the new infrared divergence caused by the temperature effect in the bremsstrahlung process. It turns out that both of the infrared divergence at the zero and finite temperature can be cancelled by the identical Feynman diagram of virtual processes. We derive the probability of radiating a net energy ω in bremsstrahlung processes and the result in Eikonal approximation is the same as that obtained in the semi-classical approximation.

References

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. Matsui T,Satz H.Phys.Lett.,1986,B178:4162. Rafelski J,Müller.Phys.Rev.Lett.,1982,48:10663. Runskamen P V.Particl Production in Highly Excited Matter.In:Gutbrod H H,Rafelski J ed.NATO ASI Series 303.New York:Plenum Press,1993.593—5944. WANG X N,Gyulassy M.Phys.Rev.Lett.,1992,68:1480;Gyulassy M.Plümer M ,Thoma M H et al.Nucl.Phys.,1992,A538:37c5. Peskin M E.An Introduction to Quantum Field Theory.New York:Addison-Wesket Publishing Company,1995.202—2086. Weldon H A.Phys.Rev.,1994,D49:15797. Kupusta J I.Finite Temperature Field Theory.London:Cambridge University Press,1989.39—408. Pisarski P D.Nucl.Phys.,1988,B309:476

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XIAO Jun and WANG En-Ke. Bremsstrahlung Radiative Correction in QED at Finite Temperature[J]. Chinese Physics C, 2001, 25(8): 772-779.

XIAO Jun and WANG En-Ke. Bremsstrahlung Radiative Correction in QED at Finite Temperature[J]. Chinese Physics C, 2001, 25(8): 772-779. shu

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Received: 2000-09-06
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Bremsstrahlung Radiative Correction in QED at Finite Temperature

XIAO Jun ^,
WANG En-Ke

Corresponding author: XIAO Jun,

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

Received Date: 2000-09-06
Accepted Date: 1900-01-01
Available Online: 2001-08-05

Abstract: Based fully on the finite temperature field theory, we calculate the Feynman diagram to analyse the new infrared divergence caused by the temperature effect in the bremsstrahlung process. It turns out that both of the infrared divergence at the zero and finite temperature can be cancelled by the identical Feynman diagram of virtual processes. We derive the probability of radiating a net energy ω in bremsstrahlung processes and the result in Eikonal approximation is the same as that obtained in the semi-classical approximation.