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Gaussian thermo field dynamics |
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| Affiliation: | 1. Center for Urban and Regional Systems (CESUR-IST), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal;2. Center for Management Studies (CEG-IST), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal |
| Abstract: | The formalisms of thermo field dynamics and of the gaussian effective potential are used to develop a new way of doing approximate calculations in quantum theories at finite temperature. |
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