The phase retrieval problem for solutions of the Helmholtz equation

The phase retrieval problem for solutions of the Helmholtz equation
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亥姆霍兹方程解的相位恢复问题

DOI:
10.1088/1361-6420/aa8640
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发表时间:
2017
期刊:
影响因子:
2.1
通讯作者:
S. P'erez
S. P'erez
中科院分区:
数学2区
文献类型:
--
作者:
Philippe Jaming;S. P'erez

文献摘要

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在本文中,我们考虑了亥姆霍兹方程Δu+λ2u=0在Ω∧Rd, d≠2域上的解的相位检索问题。在维数d=2中,如果u,v是两个这样的解,那么|u|=|v|意味着对于某些c∈c,当|c|=1时,u=cv或u=cv¯。在维度d小于3中,相同的结论在对u和v的一些限制下成立:它们要么是实值或区域函数,要么具有非消失的平均值。
In this paper we consider the phase retrieval problem for solutions of the Helmholtz equation Δu+λ2u=0 on domains Ω⊂Rd, d⩾2. In dimension d=2, if u,v are two such solutions then |u|=|v| implies that either u=cv or u=cv¯ for some c∈C with |c|=1. In dimension d⩾3, the same conclusion holds under some restriction on u and v: either they are real valued or zonal functions or have a non vanishing mean.