Hi all, Is it not possible to define a simple graph with complex hopping parameter in the Hamiltonian when using fulldiagonization?
For example, a 4-site chain is defined using a simple graph as
<LATTICES> <GRAPH name="Chain" vertices=" 4"> <VERTEX id=" 1" type="0"></VERTEX> <VERTEX id=" 2" type="0"></VERTEX> <VERTEX id=" 3" type="0"></VERTEX> <VERTEX id=" 4" type="0"></VERTEX> <EDGE type="0" source=" 1" target=" 2"/> <EDGE type="0" source=" 2" target=" 3"/> <EDGE type="0" source=" 3" target=" 4"/> </GRAPH> </LATTICES>
which I could also use the lattices.xml in the lattice libraries.I discovered that when the lattice in the libraries is used, it works well for complex hopping but using a simple graphs I got the following errors 'can not convert complex number into real one'.Any reason for this error?The reason I want to use a simple graph is because I want to use a different lattice structure for my calculations.
Thanks
Akin