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- W2050147167 endingPage "2005" @default.
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- W2050147167 abstract "A very simple treatment is presented to describe a phase transition present in Dicke's model for super-radiance, in the off-resonance case and for a single radiation mode. The results agree with previous authors, although the use of mod n( states provides a transparent physical interpretation. The results show that if the A2 term is kept in the Hamiltonian, the phase transition persists, thus clarifying some recent controversy on the subject. The thermodynamic variables are calculated above and below Tc. The phase transition is shown to be a consequence of an instability of the ground state. The behaviour of (aDagger a) and (SZ) is explored as a function of temperature. (aDagger a) goes to zero as (Tc-T) near the critical temperature." @default.
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- W2050147167 date "1977-11-01" @default.
- W2050147167 modified "2023-09-27" @default.
- W2050147167 title "Phase transition of a system of two-level atoms" @default.
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- W2050147167 doi "https://doi.org/10.1088/0305-4470/10/11/025" @default.
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