Polynomial Carleson operators along monomial curves in the plane

TL;DR

This paper establishes $L^p$ bounds for partial polynomial Carleson operators along monomial curves in the plane, revealing connections between partial and full Carleson operator bounds in certain cases.

Contribution

It introduces new $L^p$ bounds for partial polynomial Carleson operators along monomial curves, linking these bounds to classical Carleson operators and developing novel methods for phase analysis.

Findings

$L^p$ bounds proven for partial operators along monomial curves

Partial bounds imply full bounds for certain curve and phase combinations

Methods include adapted $TT^*$ and vector-valued Carleson-Hunt techniques

Abstract

We prove $L^p$ bounds for partial polynomial Carleson operators along monomial curves $(t,t^m)$ in the plane $\mathbb{R}^2$ with a phase polynomial consisting of a single monomial. These operators are "partial" in the sense that we consider linearizing stopping-time functions that depend on only one of the two ambient variables. A motivation for studying these partial operators is the curious feature that, despite their apparent limitations, for certain combinations of curve and phase, $L^2$ bounds for partial operators along curves imply the full strength of the $L^2$ bound for a one-dimensional Carleson operator, and for a quadratic Carleson operator. Our methods, which can at present only treat certain combinations of curves and phases, in some cases adapt a $TT^*$ method to treat phases involving fractional monomials, and in other cases use a known vector-valued variant of the Carleson-Hunt theorem.