[seminar] M. Cerezo, 20.9. (četvrtak) 15h (c.t.), seminar ZTF-a

[Anđelo Samsarov]

         SEMINAR  TEORIJSKE  FIZIKE


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     Factorization and Criticality in Spin Systems


     Marco Cerezo
     Departamento de Fisica-IFLP,
     Universidad Nacional de La Plata, Argentina




    Datum: četvrtak, 20. rujna 2018.
    Vrijeme: 15 sati c.t.
    Mjesto: IRB, predavaona I krila


    Sažetak

   The exact ground state (GS) of interacting spin systems in an   
external magnetic field is typically an entangled state.
However, under certain conditions these systems can possess a   
completely separable GS, i.e., a factorized GS which can be
expressed as the product of single spin states.
In this talk I'll go trough some well known results for  factorization  
in spin systems, then I present general conditions for  the existence  
of non-transverse factorizing magnetic fields in  general spin arrays  
with anisotropic couplings of arbitrary range.
Finally, I'll review some interesting cases in which the study of   
factorization has allowed us to determine novel critical
phenomena and has enabled us to introduce the idea of "separable   
ground state" engineering
(i.e., separable states which can be useful for quantum information   
and quantum computation applications).



Voditelj seminara: Anđelo Samsarov (asamsarov at irb.hr)

http://thphys.irb.hr/Seminar/list.htm
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