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Discrete variable method for non-integrable quantum systems

✍ Scribed by W. Schweizer; R. González-Férez


Book ID
108314670
Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
55 KB
Volume
121-122
Category
Article
ISSN
0010-4655

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📜 SIMILAR VOLUMES


Functional integral methods for quantum
✍ S Leibler; H Orland 📂 Article 📅 1981 🏛 Elsevier Science 🌐 English ⚖ 660 KB

The partition function of quantum spin systems is represented by a functional integral over "time"-dependent magnetic fields. It is evaluated in the saddle-point approximation. In this way, the excitations of the system are derived from first principles, and their interactions are obtained. ## 1. I