Ramakrishnan, T. V. (1986) Instability of the meson-boson-field solution for correlated Fermi systems Journal of Physics C: Solid State Physics, 19 (1). L1-L5. ISSN 0022-3719
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Official URL: http://iopscience.iop.org/0022-3719/19/1/001/
Related URL: http://dx.doi.org/10.1088/0022-3719/19/1/001
Abstract
The curvature of the ground-state energy of a correlated Fermi system (with respect to variations in the mean boson field around its extremum) is related to kinetic energy fluctuations in a Fermi gas, and is thus shown to be negative. Therefore the mean-field solution is unstable, and does not seem a good first approximation for describing the properties of such systems.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics. |
| ID Code: | 40820 |
| Deposited On: | 25 May 2011 11:08 |
| Last Modified: | 25 May 2011 11:08 |
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