dorsal/arxiv
View SchemaThe Importance of Being Unistochastic
| Authors | Ingemar Bengtsson |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0403088 |
| URL | https://arxiv.org/abs/quant-ph/0403088 |
Abstract
A bistochastic matrix is a square matrix with positive entries such that rows and columns sum to unity. A unistochastic matrix is a bistochastic matrix whose matrix elements are the absolute values squared of a unitary matrix. We can now ask questions such as when a given bistochastic matrix is unistochastic. I review these questions: Why they are asked, why they are difficult to answer, and what is known about them.
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"abstract": "A bistochastic matrix is a square matrix with positive entries such that rows\nand columns sum to unity. A unistochastic matrix is a bistochastic matrix whose\nmatrix elements are the absolute values squared of a unitary matrix. We can now\nask questions such as when a given bistochastic matrix is unistochastic. I\nreview these questions: Why they are asked, why they are difficult to answer,\nand what is known about them.",
"arxiv_id": "quant-ph/0403088",
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"Ingemar Bengtsson"
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"title": "The Importance of Being Unistochastic",
"url": "https://arxiv.org/abs/quant-ph/0403088"
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