Small cap decoupling for the parabola with logarithmic constant
Abstract
We note that the subpolynomial factor for the small cap decoupling constants for the truncated parabola may be controlled by a suitable power of . This is achieved by considering a suitable amplitude-dependent wave envelope estimate, as was introduced in a recent paper of Guth and Maldague to demonstrate a small cap decoupling for the cone; we demonstrate that the version for may be taken with a loss controlled by a power of as well.
Cite
@article{arxiv.2305.00125,
title = {Small cap decoupling for the parabola with logarithmic constant},
author = {Ben Johnsrude},
journal= {arXiv preprint arXiv:2305.00125},
year = {2025}
}
Comments
34 pages. This version includes a broad/narrow step missing in a previous version. Wave packets have been tweaked. Improved exposition in overview. Various small numerical changes. Central claims are unchanged, except for updated numerology. The author thanks Zane Li and Po-Lam Yung for pointing out the major error to be corrected in previous version. Comments on current version are welcome