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Charge Excitations in Two-Leg Ladders: A tDMRG Approach...

by Luis Dias Da Silva, Gonzalo Alvarez, Michael S Summers, Elbio R Dagotto
Publication Type
Journal
Journal Name
Journal of Superconductivity
Publication Date
Page Numbers
2193 to 2196
Volume
26
Issue
6

Abstract We study the dynamics of holon–doublon pairs
in two-leg Hubbard ladders with the time-dependent Density
Matrix Renormalization-Group approach. Benchmark
results show that the Krylov algorithm is well suited to
calculate the time dependence of observables in these systems.
Furthermore, we show that the dynamics of the holon–
doublon depend strongly on the coupling asymmetry within
the ladder, indicating that the ladder geometry plays a role
in the decay of these elementary charge excitations.