Seminar Details
2006-05-04 (17.00 pm) : Colloque CESAME/MAPA "Nonhermitian systems and pseudospectra"
At Euler building
Organized by Mathematical Engineering
Speaker :
Lloyd Trefethen (Oxford University Computing Laboratory)
Abstract :
Problems governed by matrices or operators that are far from hermitian may
have dynamics that has little to do with the eigenvalues. The alternative tool
of pseudospectra is introduced and four applications are presented: (1) hydrodynamic
stability, (2) wave packet pseudomodes, (3) lasers, and (4) the nonsymmteric Anderson
model from the field of "nonhermitian quantum mechanics".