The 1− excitations of the three-body halo nucleus 11Li are investigated. We use adiabatic
hyperspherical expansion and solve the Faddeev equations in coordinate space. The
method of complex scaling is used to compute the resonance states. The Pauli forbidden
states occupied by core neutrons are excluded by constructing corresponding complex
scaled phase equivalent two-body potentials. We use a recently derived neutron–core
interaction consistent with known structure and reaction properties of 10Li and 11Li. The …