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cond-mat.supr-con2002★ 32 cited
What are the elementary excitations of the BCS model in the canonical ensemble?
J. M. Roman, G. Sierra, J. Dukelsky
We have found the elementary excitations of the exactly solvable BCS model for a fixed number of particles. These turn out to have a peculiar dispersion relation, some of them with…
cond-mat.supr-con2002★ 91 cited
Large N limit of the exactly solvable BCS model: analytics versus numerics
J. M. Roman, G. Sierra, J. Dukelsky
We have studied the numerical solutions of Richardson equations of the BCS model in the limit of large number of energy levels at half-filling, and compare them with the analytic r…