Hamiltonians with quartic anharmonicities: Comparison with EPR measurements in SrTiO3 |
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| Authors: | A Bunde |
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| Institution: | Institut für Theoretische Physik, Universität des Saarlandes, Bau 9, D 66 Saarbrücken, W. Germany |
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| Abstract: | Rigorous bounds have been found for Hamiltonians with quartic anharmonicity in the single particle potential. They reveal that EPR measurements in SrTiO3 can only be explained by use of those Hamiltonians alone, when there exists a strong cubic anisotropy in the anharmonicity. |
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