ELFT HÍRADÓ

[Máté Zoltán <mate AT atomki.mta.hu>]

Az MTA Atommagkutató Intézet tanácstermében
(Debrecen, Bem tér 18/c. I. ép. alagsor)
2015. február 11-én, SZERDÁN 11:00-kor


              Iva Brezinova
       (Institute of Theoretical Physics
        Vienna University of Technology)

   A new approach in many-body quantum mechanics
   using the two-particle reduced density matrix


címmel előadást tart.


Vendégeket szívesen látunk.

                                                         Máté Zoltán


Abstract:
One of the most successful time-dependent quantum many-body theories is
time-dependent density functional theory (TDDFT) which has been applied
to atoms, molecules, nuclei and solids especially whenever the number of  
degrees of freedom prevents the application of more
sophisticated methods. TDDFT, however, suffers from fundamental
difficulties: apart from the theoretical statement that the density
contains all information about the full wavefunction there is no known
method for how to exactly incorporate exchange
and correlation effects during time propagation and how information beyond
spatial one-particle observables can be extracted. We have recently
developed a new theory based on the two-particle reduced density matrix
which overcomes some of these difficulties since both the energy
functional and the equations of motion are known exactly.  We give an
overview of this theory, discuss its limitations, and demonstrate its
application to electronic strong field dynamics in small molecules.