Colóquio do Departamento de Física Matemática
Dia 30/05/2018 (quarta-feira) - 11h - Sala Jayme Tiomno
"Entanglement entropy production and the Kolmogorov-Sinai rate"
Palestrante: Prof. Nelson de Oliveira Yokomizo (UFMG)
Abstract:
The rate of entropy production in a classical dynamical system is characterized by the Kolmogorov-Sinai entropy rate given by the sum of all positive Lyapunov exponents of the system. I will present a quantum version of this result valid for bosonic systems with unstable quadratic Hamiltonians: the entanglement entropy of squeezed coherent states grows linearly for large times, with a rate determined by the Lyapunov exponents and the choice of the subsystem. I will discuss the application of this result to quantum field theory and its conjectured implications for the behaviour of chaotic quantum systems prepared in a semiclassical state.
Data do Evento:
30/05/2018 - 11:00 até 13:00
Data de Término:
30/05/2018 - 11:00