Published August 30, 2016
| Submitted
Journal Article
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On the Hölder regularity for the fractional Schrödinger equation and its improvement for radial data
- Creators
- Lemm, Marius
Abstract
We consider the linear, time-independent fractional Schrödinger equation (-Δ)^s ψ + Vψ = f on Ω ⊂ R^N. We are interested in the local Hölder exponents of distributional solutions ψ, assuming local L^p integrability of the functions V and f. By standard arguments, we obtain the formula 2s−N/p for the local Hölder exponent of ψ where we take some extra care regarding endpoint cases. For our main result, we assume that V and f (but not necessarily ψ) are radial functions, a situation which is commonplace in applications. We find that the regularity theory "becomes one dimensional" in the sense that the Hölder exponent improves from 2s−N/p to 2s−1/p away from the origin. Similar results hold for ∇ψ as well.
Additional Information
© 2016 Taylor & Francis. Received 01 Apr 2016, Accepted 06 Aug 2016, Accepted author version posted online: 30 Aug 2016, Published online: 30 Aug 2016. It is a pleasure to thank Rupert Frank for suggesting the problem and for several helpful discussions. We thank Tianling Jin for useful remarks on a draft version of this paper.Attached Files
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Additional details
- Eprint ID
- 73213
- Resolver ID
- CaltechAUTHORS:20170104-133711053
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