THE HERMITIAN REPRESENTATION OF THE COMPLEX-ROTATION METHOD AND ITS APPLICATION TO THE 1S2S2 2S RESONANCE OF HE-

The spectrum of the H operator, fundamental for the Hermitian representation of the complex-coordinate method, is proven to be symmetric with respect to zero. This property makes the effective application of H eigenproblems possible, instead of H-2 eigenproblems. The Hermitian representation complex-coordinate method modified in this way is applied, with a superposition of correlated configurations as a trial function, to the He- 1s2s2 S2 resonance and gives the position at 19.367 eV above the He ground state and a width of 8.6 meV.