Medium Effects and Thermal Instability in φ<SUB>6</SUB><SUP>3</SUP> Theory

XIONG Chun; HOU De-Fu

Chinese Physics C> 2002, Vol. 26> Issue(8) : 753-758

Medium Effects and Thermal Instability in φ₆³ Theory

XIONG Chun ^, ,
HOU De-Fu

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

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Abstract：
We calculate the effective mass and damping rate in φ₆³ theory at finite temperature by evaluating the real and imaginary parts of the one-loop self energies at the hard thermal loop (HTL) approximation. We show that there is thermal instability above a critical temperature Tc. The effective mass and damping rate are proportional to gT and gT respectively. We compare our results with those in hot QCD.

References

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. Kapusta J I. Finite Temperature Field Theory, Cambridge University Press,1989,35—67 2. Bellac M Le. Thermal Finite Theory, Cambridge University Press,1996,150—188 3. Pisarski R D. Phys. Rev. Lett.,1989,63:1129;Braaten E, Pisarski R D. Nucl. Phys.,1990,B337:569 4. Thoma M H. New Development and Applications of Thermal Field Theory, hep-Ph/000101645. HOU De-Fu et al. Phys. Rev.1996,D54:7634 6. Collins J C. Renormalization, Cambridge University Press,1983,132—147 7. HOU De-Fu et al. European J. Phys.,1998,C4:129 8. GAO Song et al. Phys. Rev.,1994,C49:40 9. ZHANG Ben-Wei et al. Phys. Rev.,2000,C61:051302(R)10. Altherr T et al. Phys. Lett.,1991,B271:183

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XIONG Chun and HOU De-Fu. Medium Effects and Thermal Instability in φ₆³ Theory[J]. Chinese Physics C, 2002, 26(8): 753-758.

XIONG Chun and HOU De-Fu. Medium Effects and Thermal Instability in φ₆³ Theory[J]. Chinese Physics C, 2002, 26(8): 753-758. shu

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Received: 2002-02-06
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

Medium Effects and Thermal Instability in φ₆³ Theory

XIONG Chun ^,
HOU De-Fu

Corresponding author: XIONG Chun,

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

Received Date: 2002-02-06
Accepted Date: 1900-01-01
Available Online: 2002-08-05

Abstract: We calculate the effective mass and damping rate in φ₆³ theory at finite temperature by evaluating the real and imaginary parts of the one-loop self energies at the hard thermal loop (HTL) approximation. We show that there is thermal instability above a critical temperature Tc. The effective mass and damping rate are proportional to gT and gT respectively. We compare our results with those in hot QCD.