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We prove some new $L^p$ estimates for maximal Bochner-Riesz operator in the plane.

Classical Analysis and ODEs · Mathematics 2020-09-01 Xiaochun Li , Shukun Wu

The correlation function of the two dimensional Ising model with the nearest neighbours interaction on the finite size lattice with the periodical boundary conditions is derived. The expressions similar to the form factor expansion are…

High Energy Physics - Theory · Physics 2007-05-23 A. I. Bugrij

The general solution of the stationary Schrodinger equation for the associated Lame potentials with an arbitrary real energy is found. The supersymmetric partners are generated by employing seeds solutions for factorization energies inside…

Mathematical Physics · Physics 2014-11-18 David J Fernandez C , Asish Ganguly

We prove global well-posedness for the cubic, defocusing, nonlinear Schr{\"o}dinger equation on $\mathbf{R}^{2}$ with data $u_{0} \in H^{s}(\mathbf{R}^{2})$, $s > 1/4$. We accomplish this by improving the almost Morawetz estimates in [9].

Analysis of PDEs · Mathematics 2009-09-07 Benjamin Dodson

For the first time, Schr\"odinger equations with cubic and more complex nonlinearities containing the unknown function with constant delay are analyzed. The physical considerations that can lead to the appearance of a delay in such…

Exactly Solvable and Integrable Systems · Physics 2025-01-09 Andrei D. Polyanin , Nikolay A. Kudryashov

This paper provides a rigorous derivation of a counterexample of Bourgain, related to a well-known question of pointwise a.e. convergence for the solution of the linear Schr\"odinger equation, for initial data in a Sobolev space. This…

Classical Analysis and ODEs · Mathematics 2020-11-02 Lillian B. Pierce

We show how our recent results on compositions of d.c. functions (and mappings) imply positive results on extensions of d.c. functions (and mappings). Examples answering two natural relevant questions are presented. Two further theorems,…

Functional Analysis · Mathematics 2008-10-09 Libor Vesely , Ludek Zajicek

In this article, we address endpoint issues for the bilinear spherical maximal functions. We obtain borderline restricted weak type estimates for the well studied bilinear spherical maximal function…

Classical Analysis and ODEs · Mathematics 2024-01-17 Ankit Bhojak , Surjeet Singh Choudhary , Saurabh Shrivastava , Kalachand Shuin

A generalization of the classical Lipschitz summation formula is proposed. It involves new polylogarithmic rational functions constructed via the Fourier expansion of certain sequences of Bernoulli--type polynomials. Related families of…

Number Theory · Mathematics 2007-12-16 Stefano Marmi , Piergiulio Tempesta

The Schr\"odinger functional in Wilson's lattice QCD leads to a sensible classical continuum theory which can be taken as starting point for a perturbative analysis. In dimensional regularization, the saddle point expansion of the…

High Energy Physics - Lattice · Physics 2009-10-28 Stefan Sint

In this paper, we combine the argument of [12] and [27] to prove the maximal estimates for fractional Schr\"odinger equations $(i\partial_t+\mathcal{L}_{\mathbf{A}}^{\frac\alpha 2})u=0$ in the purely magnetic fields which includes the…

Analysis of PDEs · Mathematics 2022-01-06 Haoran Wang , Jiye Yuan

A new decomposition for frequency-localized solutions to the Schrodinger equation is given which describes the evolution of the wavefunction using a weighted sum of Lipschitz tubes. As an application of this decomposition, we provide a new…

Analysis of PDEs · Mathematics 2015-07-28 Felipe Hernandez

In this work, firstly the maximal sectorial linear relations are described. Later on, the discreteness of the spectrum of the linear maximal sectorial operators and asymptotical behaviour of the eigenvalues of such operators in terms of the…

Functional Analysis · Mathematics 2011-05-24 Z. I. Ismailov , R. Ozturk

Recently, Dorey and Tateo have investigated functional relations among Stokes multipliers for a Schr{\"o}dinger equation (second order differential equation) with a polynomial potential term in view of solvable models. Here we extend their…

High Energy Physics - Theory · Physics 2008-11-26 J. Suzuki

We present some old and new results on dispersive estimates for Schroedinger equations.

Analysis of PDEs · Mathematics 2007-05-23 Wilhelm Schlag

We establish new intrinsic Strichartz estimates for solutions of the Cauchy problem for a class of possibly degenerate Schr\"odinger equations with a real drift.

Analysis of PDEs · Mathematics 2026-03-02 Federico Buseghin , Nicola Garofalo

In this work we shall review some of our recent results concerning unique continuation properties of solutions of Schr\"odinger equations. In this equations we include linear ones with a time depending potential and semi-linear ones.

Analysis of PDEs · Mathematics 2011-12-12 Luis Escauriaza , Carlos E. Kenig , Gustavo Ponce , Luis Vega

We present an overview of our recent work on implementable solutions to the Schroedinger bridge problem and their potential application to optimal transport and various generalizations.

Optimization and Control · Mathematics 2015-03-03 Yongxin Chen , Tryphon Georgiou , Michele Pavon

We prove L^1 --> L^\infty estimates for the linear Schroedinger equation in three dimensions. The potential is assumed to belong to certain L^p spaces, but no pointwise decay estimates and no additional regularity is required.

Analysis of PDEs · Mathematics 2007-05-23 Michael Goldberg

We consider the long time dynamics of nonlinear Schr\"odinger equations with an external potential. More precisely, we look at Hartree type equations in three or higher dimensions with small initial data. We prove an optimal decay estimate,…

Mathematical Physics · Physics 2024-06-19 Charlotte Dietze