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most citedAccurate numerical solution to the finite-size Dicke model

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cond-mat.other2004

Comparison of variational and CSE methods to polaron ground-state energy

Qing Chen, Ke-Lin Wang, Yi Wang

Taking the same trial wave function, the ground-state energy of Fröhlich polaron is investigated by variational method and coherent-state expansion (CSE) one, respectively. Within…