Charles L Fefferman

activity

20152026

most citedPhotonic realization of topologically protected bound states in domain-wall waveguide arrays

19 citations · 26 across the 8 of their papers we have counts for

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Showing 2026 · math.APShow all

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math.AP2026

Double-wells in a strong magnetic field: absence of tunneling for infinitely many values of the coupling constant

Kevin Buck, Charles L. Fefferman, Javier Gómez-Serrano +3

We prove the fixed-potential conjecture of Fefferman, Shapiro, and Weinstein for inversion-symmetric magnetic double wells. We construct a number $L_{0} > 0$ and one smooth, compactly…