The absorption of light in ellipsoidal quantum dot in the presence of a magnetic field is discussed using perturbation theory. Also the same problem is discussed using the normal modes. Quantum dot absorption coefficient is calculated -as well as threshold frequency of absorption -as a function of applied magnetic field. Theoretical results are compared with experimental data obtained by magneto-luminescence method in In 0.53 Ga 0.47 As quantum dot (M.
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