Tight upper and lower bounds to the eigenvalues and critical parameters of a double well

2016/07/13 by Fernández, Francisco M.
#FOS: Physical sciences #Mathematical Physics (math-ph) #Quantum Physics (quant-ph)

paper · doi:10.48550/arxiv.1607.03692

Abstract

By means of a suitable rational approximation to the logarithmic derivative of the wavefunction we obtain tight upper and lower bounds to the eigenvalues and critical parameters of the quartic double-well potential.

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