Takahashi, Yasushi; Umezawa, Hiroomi Thermo field dynamics. (English) Zbl 1229.81284 Int. J. Mod. Phys. B 10, No. 13-14, 1755-1805 (1996). MSC: 81T99 82C10 PDFBibTeX XMLCite \textit{Y. Takahashi} and \textit{H. Umezawa}, Int. J. Mod. Phys. B 10, No. 13--14, 1755--1805 (1996; Zbl 1229.81284) Full Text: DOI
Umezawa, H. Development in concepts in quantum field theory in half a century. (English) Zbl 0816.01009 Math. Jap. 41, No. 1, 109-124 (1995). Reviewer: P.Reichensperger (Oberasbach) MSC: 01A60 81T99 PDFBibTeX XMLCite \textit{H. Umezawa}, Math. Japon. 41, No. 1, 109--124 (1995; Zbl 0816.01009)
Yamanaka, Y.; Umezawa, H.; Nakamura, K.; Arimitsu, T. Thermo field dynamics in time representation. (English) Zbl 0988.82505 Int. J. Mod. Phys. A 9, No. 7, 1153-1180 (1994). MSC: 82C10 81T99 PDFBibTeX XMLCite \textit{Y. Yamanaka} et al., Int. J. Mod. Phys. A 9, No. 7, 1153--1180 (1994; Zbl 0988.82505) Full Text: DOI
Chu, H.; Umezawa, H. A unified formalism of thermal quantum field theory. (English) Zbl 1063.82509 Int. J. Mod. Phys. A 9, No. 14, 2363-2409 (1994). MSC: 82B10 81T99 82B28 82C10 PDFBibTeX XMLCite \textit{H. Chu} and \textit{H. Umezawa}, Int. J. Mod. Phys. A 9, No. 14, 2363--2409 (1994; Zbl 1063.82509) Full Text: DOI
Umezawa, H. Quantum noise and thermal noise. (English) Zbl 0942.81613 Emch, G. G. (ed.) et al., On Klauder’s path: a field trip. Essays in honor of John R. Klauder. Singapore: World Scientific. 253-263 (1994). MSC: 81T99 81V80 PDFBibTeX XMLCite \textit{H. Umezawa}, in: On Klauder's path: a field trip. Essays in honor of John R. Klauder. Singapore: World Scientific. 253--263 (1994; Zbl 0942.81613)
Umezawa, H.; Yamanaka, Y. Temporal description of thermal quantum fields. (English) Zbl 1021.81962 Mod. Phys. Lett. A 7, No. 37, 3509-3520 (1992). MSC: 81T99 PDFBibTeX XMLCite \textit{H. Umezawa} and \textit{Y. Yamanaka}, Mod. Phys. Lett. A 7, No. 37, 3509--3520 (1992; Zbl 1021.81962) Full Text: DOI