# Dissipative CSL Model

Date:

Tuesday, July 14, 2015

Room:

Stasi seminar room

Speaker:

Mr. Jahngir Nobakht (Sharif Univeristy of Technology Tehran, Iran, Azadi Ave, Iran)

Abstract:

Continuous Spontaneous Localization (CSL) is the most refined collapse model which describes the localization of spatial wavefunction of macroscopic objects with the destruction of spatial quantum superpositions through a nonlinear interaction with the collapse noise.These are not the only distinctive feature of the CSL model with respect to the usual Schrödinger evolution.The action of the noise induces a steady increase of the mean kinetic energy, which diverges on the long time scale, thus leading to a violation with energy conservation principle.In this seminar we discuss about a dissipative generalization of CSL model which guarantees a finite energy exchange during the entire system's evolution.This is achieved by introducing a proper non-linear stochastic modification of the Schrödinger equation via the introduction of new operators. These new operators depend on the momentum of the system and describe the action of a dissipative finite-temperature collapse noise. So in this dissipative model there is a continuous localization of the wavefunction, while the mean energy of the system will converge to a finite asymptotic value.At the end we will also discuss about non-white noise generalization of standard CSL model which in future we would like to apply these operation to dissipative CSL model.