Sökning: "Wigner phase space"
Hittade 4 avhandlingar innehållade orden Wigner phase space.
1. Quantum Force in Wigner Space
Sammanfattning : In this thesis, I will present effective methods to study quantum dynamics using trajec- tories. Our methods are based on a method named the Classical Wigner model which starts with a quantum initial condition and generates trajectories which are propagated in time using a classical force. LÄS MER
2. Quantum dynamical effects in complex chemical systems
Sammanfattning : When using mathematical models to computationally investigate a chemical system it is important that the methods used are accurate enough to account for the relevant properties of the system and at the same time simple enough to be computationally affordable. This thesis presents research that so far has resulted in three published papers and one unpublished manuscript. LÄS MER
3. Classical Wigner Method with an Effective Quantum Force
Sammanfattning : In this work, I will present an effective way to study the dynamics in phase space and obtain the rate constants. Our method is based on the Classical Wigner (CW) model, which is an approximate method for including quantum mechanical effects into molecular simulations. LÄS MER
4. Quantum Kinetic Theory for Plasmas : spin, exchange, and particle dispersive effects
Sammanfattning : This thesis is about developing and studying quantum mechanical models of plasmas. Quantum effects can be important at high densities, at low temperatures, and in strong electromagnetic fields, in various laboratory and astrophysical systems. LÄS MER
