The Canonical Group of Transformations of a Gaussian or Hermitean Frame
Seminário do GFM
IIIUL, B2-01
2015-03-04 14:30
2015-03-04 15:30
2015-03-04
14:30
..
15:30
by Maurice de Gosson (Univ. Vienna)
We show that the lattice of any multidimensional Gaussian Gabor frame can be deformed using a Hamiltonian flow determined by the window, viewed as a stationary state of a certain Hamiltonian operator. Thus, to every such frame is intrinsically attached a canonical one-parameter group of symplectic transformations. We give applications to Gaussian and Germitean frames.