THE STUDY OF DECOHERENCE PHENOMENON IN ENTANGLED K-MESON SYSTEM BASED ON LINDBLAD EQUATION

• Main Author: Syahbana, Abas
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/55090
• Institution: Institut Teknologi Bandung

In this thesis, Lindblad Equation and decoherence phenomenon model in entangled K-meson based on Lindblad Equation will be discussed. Before discussing it, some theories needed are explained. Then, Lindblad Equation is derived from microscopic dynamics and as a completely positive and trace-preserving (CPT) generator. By using Lindblad Equation, dynamical equation of entangled K-meson system that interact with the environment is obtained. From this dynamical equation, parameters related to the decoherence of the system are determined. There are two paramater determined, decoherence parameter (?) and effective decoherence parameter (?). By using Standard Least-Squares method, the author of this thesis obtained ?=0,13±0,865. This result correspond with reference result that use effective variance method, ?=0,13-0,15 +0,16, which correspond with ?=(1,84-2,17 +2,50)×10-12 MeV. The value of these parameters are relatively small which mean the information from the system is relatively maintained.