Sökning: "linear Klein-Gordon equation"
Hittade 3 avhandlingar innehållade orden linear Klein-Gordon equation.
1. On space-time means for solutions of nonlinear Klein-Gordon equations
Sammanfattning : .... LÄS MER
2. Transient waves in nonstationary media : with applications to lightning and nonlinear media
Sammanfattning : Propagation of transient waves in nonstationary, inhomogeneous, dispersive, stratified media is considered. Waves originating from sources exterior to the scatterer as well as from internal sources are treated. Algorithms are developed and illustrated by computations of wave phenomena in stationary, nonstationary and weakly nonlinear media. LÄS MER
3. Quiescent regimes in cosmology
Sammanfattning : This thesis is about cosmological solutions to Einstein’s equations of general relativity, in particular spacetimes whose mean curvature diverges. Moreover, we consider anisotropic spacetimes with big bang singularities. In this setting the singularity is expected to generically be oscillatory if no matter is present. LÄS MER