ELFT HÍRADÓ

[tcsaba AT eik.bme.hu]

                     M E G H Í V Ó - I N V I T A T I O N

     Seminar series of the Department of Theoretical Physics at the
           Budapest University of Technology and Economics

                            Péter Lévay
              (Department of Theoretical Physics, BUTE)

               Coupled Cluster Method and Entanglement


The Coupled Cluster (CC) and full CI expansions are studied for
hree fermions with six  and seven modes. Surprisingly, the CC
expansion is tailor made to characterize the usual SLOCC (Stochastic
Local Operations and Classical Communication) entanglement classes.
It means that the notion of a SLOCC transformation shows up quite
naturally as a one relating the CC and CI expansions, and going
from the CI expansion to the CC one is equivalent to obtaining a
canonical form for the state where the structure of the entanglement
classes is transparent. In this picture entanglement is characterized
by the parameters of the cluster operators describing transitions
from occupied states to singles, doubles and triples of nonoccupied
ones.


Idöpont: 2015. október 2., 10:15
Helyszín:
BME Fizikai Intézet, Elméleti Fizika Tanszék,
Budafoki út 8. F-épület, III lépcsöház, szemináriumi szoba

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