Propagation of well-prepared states along Martinet singular geodesics (Q6039741)
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scientific article; zbMATH DE number 7688014
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Propagation of well-prepared states along Martinet singular geodesics |
scientific article; zbMATH DE number 7688014 |
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Propagation of well-prepared states along Martinet singular geodesics (English)
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23 May 2023
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Summary: We prove that for the Martinet wave equation with ``flat'' metric, which is a subelliptic wave equation, singularities can propagate at any speed between 0 and 1 along any singular geodesic. This is in strong contrast with the usual propagation of singularities at speed 1 for wave equations with elliptic Laplacian.
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propagation of singularities
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abnormal
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geodesic
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Schrödinger operator
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subelliptic wave equation
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