The Landau Pole at Finite Temperature

Details The Landau Pole at Finite Temperature The Landau Pole at Finite Temperature

2000-11-21

arxiv.org/abs/hep-ph/0011268v2

Phys.Rev.D64:021703,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex, 6 pages, 2 .ps figures. Improved version. To appear in Phys. Rev. D, Rapid Communications

Scientific paper

10.1103/PhysRevD.64.021703

We study the Landau pole in the lambda phi^4 field theory at non-zero and large temperatures. We show that the position of the thermal Landau pole Lambda_L(T) is shifted to higher energies with respect to the zero temperature Landau pole Lambda_L(0). We find for high temperatures T > Lambda_L(0), Lambda_L(T) simeq pi^2 T / log (T / Lambda_L(0)). Therefore, the range of applicability in energy of the lambda phi^4 field theory increases with the temperature.

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