Thesis
Problems in the quantum theory of many-particle systems
- Abstract:
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A finite temperature perturbation theory for the Heisenberg model of ferromagnetism is presented. A modified Wick's theorem proved for S=½ and finite temperatures allows the terms in the expansion for the temperature dependent Green's function to be expressed by linked Feynman-like diagrams. The diagrams differ from the usual boson and fermion diagrams in the appearance of time (temperature) dependent dotted lines between prop...
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- Peer review status:
- Peer reviewed
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Authors
Bibliographic Details
- Type of award:
- DPhil
- Level of award:
- Doctoral
- Awarding institution:
- University of Oxford
- Source identifiers:
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601870577
Item Description
- UUID:
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uuid:b7d6fa0e-38b1-4e9e-97dc-4124f0200eec
- Local pid:
- polonsky:11:6
- Deposit date:
- 2017-10-05
Terms of use
- Copyright holder:
- Lewis, W; Lewis, William W
- Copyright date:
- 1966
- Notes:
- This thesis was digitised thanks to the generosity of Dr Leonard Polonsky
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