Zhifei Zhu

activity

20152026

ξ

-moments calculated with QCD sum rules on the pion distribution amplitude models

4 citations · 5 across the 8 of their papers we have counts for

collaborators

9 papers

math.AP2026

Sharp endpoint multilinear estimates for oscillatory integrals and spectral clusters

Shengwen Gan, Cheng Zhang, Zhifei Zhu

We prove sharp $k$ -linear $L^{p}$ estimates for Carleson--Sjölin oscillatory integral operators with arbitrary separated frequency scales for all $k \geq 2$ and $1 \leq p \leq \infty$ . The…

math.AP2026

Restriction estimates for toral eigenfunctions and lattice points in spherical regions

Cheng Zhang, Zhifei Zhu

We establish new $L^{2}$ restriction estimates for toral eigenfunctions. These estimates are sharp in certain cases, and thus prove a conjecture of Huang-Zhang for smooth submanifold…

math.CA2026

Maximal growth of the Stein-Wainger oscillatory integral

Cheng Zhang, Zhifei Zhu

We determine the optimal growth of the Stein--Wainger oscillatory integral for every Denjoy--Carleman class defined by a positive log-convex sequence. Quasianalyticity is equivalen…

math.DG2025

Homological Filling and Minimal Varifolds in Four-Dimensional Einstein Manifolds

Wenjie Fu, Zhifei Zhu

We study the smallest area $A (M, g)$ of a 2-dimensional stationary integral varifold in a closed Einstein 4-manifold $(M^{4}, g)$ with $Ric_g = λg, |λ|\leq 3, Vol(M,g)\geq v>0, diam(M,…

math.DG2024

Length of closed geodesics on Riemannian manifolds with good covers

Zhifei Zhu

In this article, we prove a generalization of our previous result in [12]. In particular, we show that for an $n$ -dimensional, simply connected Riemannian manifold with diameter $D…

hep-ph2022★ 4 cited

Constraint of $ξ$ -moments calculated with QCD sum rules on the pion distribution amplitude models

Tao Zhong, Zhi-Hao Zhu, Hai-Bing Fu

So far, the behavior of the pionic leading-twist distribution amplitude (DA) $ϕ_{2; π} (x, μ)$ $-$ which is universal physical quantity and enters the high-energy processes involving…

math.DG2017★ 1 cited

An upper bound for the smallest area of a minimal surface in manifolds of dimension four

Nan Wu, Zhifei Zhu

In this paper, we prove that for any closed 4-dimensional Riemannian manifold $M$ with trivial first homology group, if the Ricci curvature $∣ R i c ∣ \leq 3$ , the diameter $diam(M)\leq…

math.DG2017

Length of a shortest closed geodesic in manifolds of dimension four

Nan Wu, Zhifei Zhu

In this paper, we show that for any closed 4-dimensional simply-connected Riemannian manifold $M$ with Ricci curvature $∣ R i c ∣ \leq 3$ , volume $v o l (M) > v > 0$ , and diameter $d iam (M) < D$ ,…

math.DG2015

Subdividing Three-Dimensional Riemannian Disks

Parker Glynn-Adey, Zhifei Zhu

P. Papasoglu asked in [Pap13] whether for any Riemannian 3-disk $M$ with diameter $d$ , boundary area $A$ and volume $V$ , there exists a homotopy $S_{t}$ contracting the boundary to a…