Entanglement_entropy for finite ladder
Posted: 13 Jan 2021, 17:31
Hi,
I want to calculate entanglement entropy in a finite two-leg ladder model, where the cutting bonds are two horizontal bonds in two legs. As an example, if I consider 6*2 lattice, and it is written in [0,1,2,3,.....11] in a zig-zag fashion, the bonds I want to cut are ( between 4 and 6) and (between 5 and 7). Cutting these two bonds will divide the whole ladder into two half: left and right. This can be achieved by putting the whole segments at the left and by using entanglement_entropy_segment, which is very costly for a large segment. As I am considering just two bonds (simultaneously), is there another way to do the calculation? ( I understand that if I just want to cut one bond, how easy it is being part of DMRG, but I want two bonds to be cut). It seems to me that mentioning [bonds] works for a single cut.
I want to calculate entanglement entropy in a finite two-leg ladder model, where the cutting bonds are two horizontal bonds in two legs. As an example, if I consider 6*2 lattice, and it is written in [0,1,2,3,.....11] in a zig-zag fashion, the bonds I want to cut are ( between 4 and 6) and (between 5 and 7). Cutting these two bonds will divide the whole ladder into two half: left and right. This can be achieved by putting the whole segments at the left and by using entanglement_entropy_segment, which is very costly for a large segment. As I am considering just two bonds (simultaneously), is there another way to do the calculation? ( I understand that if I just want to cut one bond, how easy it is being part of DMRG, but I want two bonds to be cut). It seems to me that mentioning [bonds] works for a single cut.