[Phys-seminars] 2018-01-17 Condensed Matter Theory Seminar

smoshe smoshe at bgu.ac.il
Mon Jan 1 17:15:42 IST 2018

Condensed Matter Theory Seminar

 DATE: 17-01-18

 TIME: 13:30

 PLACE: Physics building (#54) room 207

Protected ground states in short chains of coupled spins

Eytan Grosfeld, Ben-Gurion University

In this informal talk, I will describe the properties of a short chain of two level systems with both local and non-local spin-spin interactions. We find a phase admitting two ground states which are highly protected against all local field perturbations, persisting across a range of parameters. I will discuss my ongoing efforts to classify the phases of the chain.

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