$\ell^2$ Decoupling in $\mathbb R^2$ for curves with Vanishing Curvature

Abstract

We expand the class of curves $(φ_1(t),φ_2(t)),\ t\in[0,1]$ for which the $\ell^2$ decoupling conjecture holds for $2\leq p\leq 6$. Our class of curves includes all real-analytic regular curves with isolated points of vanishing curvature and all curves of the form $(t,t^{1+ν})$ for $ν\in (0,\infty)$.