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ChrisVer

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http://www.slac.stanford.edu/econf/C040802/papers/L004.PDF

When I tried to derive the eigenvalues of [itex] H_M [/itex] (eq.33) I got:

[itex] m^2 = (\cos 2 \theta -x)^2 + \sin^2 2 \theta [/itex]

which is only one eigenvalue. Any help? In particular it seems he defines:

[itex] \Delta m_M^2 = \Delta m_i^2 \times |m|[/itex]