ausblenden:
Schlagwörter:
Mathematical Physics, math-ph,Mathematics, Analysis of PDEs, math.AP,Mathematics, Mathematical Physics, math.MP
Zusammenfassung:
We prove quantitative versions of the following statement: If a solution of
the 1+1-dimensional wave equation has spatially compact support and consists
mainly of positive frequencies, then it must have a significant high-frequency
component. Similar results are proven for the 3+1-dimensional wave equation.