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二阶线性偏微分方程的路径积分解法I。施工总

Path Integral Solution of Linear Second Order Partial Differential Equations I. The General Construction

J. LaChapelle

摘要:

提出了一种路径积分,它可求解一类具有Dirichlet/Neumann边界条件的二阶线性偏微分方程.构造了Dirichlet和Neumann边界条件的基本核。通解可以专门用于求解带边界条件的椭圆型、抛物型和双曲型偏微分方程。这扩展了著名的路径积分解决方案的薛定谔/扩散方程在无界空间。该结构基于Cartier/DeWitt-Morette提出的功能集成框架。

英文摘要:

A path integral is presented that solves a general class of linear second order partial differential equations with Dirichlet/Neumann boundary conditions. Elementary kernels are constructed for both Dirichlet and Neumann boundary conditions. The general solution can be specialized to solve elliptic, parabolic, and hyperbolic partial differential equations with boundary conditions. This extends the well-known path integral solution of the Schrödinger/diffusion equation in unbounded space. The construction is based on a framework for functional integration introduced by Cartier/DeWitt-Morette.

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