Commit 2411362d authored by T. van der Sar's avatar T. van der Sar
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Update 8_many_atoms_solutions.md - typo fix

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......@@ -125,7 +125,7 @@ $$
and for the effective mass we obtain
$$
m^*(k) = \mp \frac{\hbar^2}{a^2 t_1 t_2}\left[ \frac{t_1 t_2 \sin^2(ka)}{(t_1^2 + t_2^2 +2 t_1 t_2\cos(ka))^{3/2}} + \frac{\cos(ka)}{\sqrt{t_1^2 + t_2^2 +2 t_1 t_2\cos(ka)}} \right].
m^*(k) = \mp \frac{\hbar^2}{a^2 t_1 t_2}\left[ \frac{t_1 t_2 \sin^2(ka)}{(t_1^2 + t_2^2 +2 t_1 t_2\cos(ka))^{3/2}} + \frac{\cos(ka)}{\sqrt{t_1^2 + t_2^2 +2 t_1 t_2\cos(ka)}} \right]^{-1}.
$$
6.
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