3k citations · 4.5k across the 30 of their papers we have counts for
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math-ph2017★ 10 cited
Convergent and Divergent Series in Physics
Carl M. Bender, Carlo Heissenberg
The aim of this review, based on a series of four lectures held at the 22nd "Saalburg" Summer School (2016), is to cover selected topics in the theory of perturbation series and th…
math-ph2017★ 11 cited
Analytic structure of eigenvalues of coupled quantum systems
Carl M. Bender, Alexander Felski, Nima Hassanpour +2
By analytically continuing the coupling constant of a coupled quantum theory, one can, at least in principle, arrive at a state whose energy is lower than the ground state of t…