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visits member for 2 years
seen May 4 '13 at 15:56

May
10
awarded  Nice Answer
May
4
answered What is the mathematical reason for topological edge states?
Apr
5
awarded  Necromancer
Nov
5
comment What is spontaneous symmetry breaking in QUANTUM systems?
@Heidar: For the case I considered with two disconnected regions 1 and 2, I think $\I_{12}$ is always non-negative. $I_{12}=0$ means these two regions are completely independent, i.e., $\rho_{12}=\rho_1\otimes \rho_2$. $I_{12}>0$ means there is at least some correlation function between 1 and 2 which is non-vanished.
Sep
28
comment What is spontaneous symmetry breaking in QUANTUM systems?
Thanks very much. I think it is very interesting to express both conventional order and topological order in the same framework of long range entanglement. I will try to be active and I think this website will be very helpful not only for graduate students but also for myself.
Sep
27
awarded  Teacher
Sep
24
answered What is spontaneous symmetry breaking in QUANTUM systems?