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arXiv 2606.17023math.AP
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半线性动态薛定谔方程中时间依赖系数的重构

Reconstruction of time-dependent coefficients in a semilinear dynamical Schr{ö}dinger equation

Indian Institute of Technology Ropar(印度技术学院罗帕尔分校);Hokkaido University(北海道大学)

Parveen Kumar, Gen Nakamura, Manmohan Vashisth

AI总结:

通过Dirichlet-to-Neumann映射,利用一阶和高阶线性化技术,从边界测量中逐点重构半线性薛定谔方程的线性与非线性时间依赖系数。

摘要:

在本文中,我们研究了一个与有界域 $\Rb^{1+n}, n\geq 2$ 上带有低阶项的半线性动态薛定谔方程相关的反问题。我们的重点是从解的边界测量中确定上述方程中出现的时间依赖系数。更精确地说,我们建立了从Dirichlet-to-Neumann映射的知识中确定线性和非线性项的时间依赖系数的逐点重构公式。由于所涉及的非线性薛定谔方程有一个平凡解,我们将方程在平凡解附近线性化,并使用线性化问题的渐近解(具有集中振幅)来重构上述系数。具体而言,我们使用一阶线性化来重构与线性项系数相关的向量和标量势,并使用高阶线性化技术来重构非线性系数。本文考虑的非线性方程可以看作是用于描述稀薄玻色-爱因斯坦凝聚体(BEC)动力学的Gross-Pitaevskii方程(GPE)的推广。

英文摘要:

In the present manuscript, we study an inverse problem related to a semilinear dynamical Schr{ö}dinger equation with lower order terms, in a bounded domain of $\Rb^{1+n},n\geq 2$. Our focus is on determination of the time-dependent coefficients appearing in the aforementioned equation, from the boundary measurements of the solutions. More precisely, we establish the {pointwise reconstruction} formulae for determining the time-dependent coefficients of linear and nonlinear terms from the knowledge of Dirichlet-to-Neumann map. Since the concerned non-linear Schrödinger equation possesses a trivial solution, we linearize the equation around the trivial solution and use the asymptotic solutions (\textit{with concentrated amplitudes}) of the linearized problem for reconstructing the aforementioned coefficients. To be more specific, we use first-order linearization to reconstruct vector and scalar potentials associated with the coefficients of linear terms and the higher-order linearization technique is used to reconstruct coefficients of nonlinearity. The nonlinear equation considered in this manuscript can be seen as a generalization of the Gross-Pitaevskii equation (GPE), which is employed to describe the dynamics of dilute Bose-Einstein condensates (BEC).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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