[seminar] [DANAS] M. Cerezo, 20.9. (četvrtak) 15h (c.t.), seminar ZTF-a
Anđelo Samsarov
Andjelo.Samsarov at irb.hr
Thu Sep 20 11:48:41 CEST 2018
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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