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- W2912764053 abstract "The purpose of this paper is to study the problem of computing unitary eigenvalues (U-eigenvalues) of non-symmetric complex tensors. By means of symmetric embedding of complex tensors, the relationship between U-eigenpairs of a non-symmetric complex tensor and unitary symmetric eigenpairs (US-eigenpairs) of its symmetric embedding tensor is established. An algorithm (Algorithm ref{algo:1}) is given to compute the U-eigenvalues of non-symmetric complex tensors by means of symmetric embedding. Another algorithm, Algorithm ref{algo:2}, is proposed to directly compute the U-eigenvalues of non-symmetric complex tensors, without the aid of symmetric embedding. Finally, a tensor version of the well-known Gauss-Seidel method is developed. Efficiency of these three algorithms are compared by means of various numerical examples. These algorithms are applied to compute the geometric measure of entanglement of quantum multipartite non-symmetric pure states." @default.
- W2912764053 created "2019-02-21" @default.
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- W2912764053 date "2019-01-27" @default.
- W2912764053 modified "2023-09-27" @default.
- W2912764053 title "Iterative methods for computing U-eigenvalues of non-symmetric complex tensors with application in quantum entanglement" @default.
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- W2912764053 doi "https://doi.org/10.48550/arxiv.1901.09510" @default.
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