论文信息 - Ward-Takahashi identity at finite temperature

Ward-Takahashi identity at finite temperature

The authors provide a perturbative check of the Ward-Takahashi identities of QED at finite temperature using a new real time formalism, thermo field dynamics. Gauge invariance is shown to hold up to the two-loop level except one special case. In verifying the identities they find a consistent rule in dealing with products of singular terms which are characteristic of the real time formalism.

K. Shigemoto | Y. Fujimoto

[1] Umezawa,et al. Erratum: Mass-derivative formula and the singularity structure in thermo field dynamics , 1984, Physical review. D, Particles and fields.

[2] H. Nishino,et al. Thermo field theory versus imaginary time formalism , 1984 .

[3] Antti J. Niemi,et al. Finite Temperature Quantum Field Theory in Minkowski Space , 1984 .

[4] H. Matsumoto,et al. Equivalence theorem and gauge theory at finite temperature , 1983 .

[5] 長岡洋介. H. Umezawa, H. Matsumoto and M. Tachiki: Thermo Field Dynamics and Condensed States, North-Holland, Amsterdam and New York, 1982, xvi+592ページ, 23×16cm, 35,750円. , 1983 .

[6] H. Umezawa,et al. Functional methods in thermofield dynamics: A real-time perturbation theory for quantum statistical mechanics , 1983 .

[7] I. Ojima. Gauge fields at finite temperatures—“Thermo field dynamics” and the KMS condition and their extension to gauge theories , 1981 .

[8] H. Matsumoto. The Causal Function in Many Body Problems , 1977 .

[9] Roman Jackiw,et al. Symmetry Behavior at Finite Temperature , 1974 .

[10] D. A. Kirzhnits,et al. MACROSCOPIC CONSEQUENCES OF THE WEINBERG MODEL. , 1972 .

[11] Y. Takahashi. On the generalized ward identity , 1957 .

[12] T. Matsubara. A New Approach to Quantum-Statistical Mechanics , 1955 .

[13] J. C. Ward. An Identity in Quantum Electrodynamics , 1950 .

[14] J. C. Ward. The scattering of light by light , 1950 .