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Abstract
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We investigate a Hamiltonian with a symmetric double well and a uniform
magnetic field, where tunneling occurs in the simultaneous limit of strong
magnetic field and deep potential wells with disjoint supports. We derive
an accurate estimate of its magnitude, and obtain a precise leading order
asymptotic expression for the effect of a strong magnetic field, improving on
the upper and lower bounds established earlier by Fefferman, Shapiro and
Weinstein.
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Keywords
Schrödinger operators, semiclassical techniques, WKB
methods, quantum tunneling, magnetic Laplacian
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Mathematical Subject Classification
Primary: 35P20, 81Q10, 81U26
Secondary: 82D20
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Milestones
Received: 6 January 2023
Revised: 22 November 2023
Accepted: 2 January 2024
Published: 16 May 2024
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© 2024 The Author(s), under
exclusive license to MSP (Mathematical Sciences
Publishers). |
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