title: Parametric evolution for a deformed cavity.
abstract: We consider a classically chaotic system that is described by a Hamiltonian H(Q,P;x), where (Q,P) describes a particle moving inside a cavity, and x controls a deformation of the boundary. The quantum eigenstates of the system are /n(x)>. We describe how the parametric kernel P(n/m)=/<n(x)/m(x(0))>/(2), also known as the local density of states, evolves as a function of deltax=x-x(0). We illuminate the nonunitary nature of this parametric evolution, the emergence of nonperturbative features, the final nonuniversal saturation, and the limitations of random-wave considerations. The parametric evolution is demonstrated numerically for two distinct representative deformation processes.
authors: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors: D
authors: D
authors: Cohen
authors: A
authors: A
authors: Barnett
authors: E J
authors: EJ
authors: Heller