2008/04/03 by K. A. Al-Hassanieh, Fernando A. Reboredo, F. A. Reboredo +6 · 1 citation
Physics and Astronomy · #Bound state #Condensed matter physics #Coulomb #Electron #Hubbard model #Mott insulator #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #Quantum mechanics #Superconductivity #Wave function #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.100.166403
published as Phys. Rev. Lett. 100, 166403 (2008) · To Appear in Phys. Rev. Lett
arxiv created 2008/04/03 · openalex publication_date 2008/04/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the real-time dynamics of a hole and doubly occupied site pair, namely, a holon and a doublon, in a 1D Hubbard insulator with on-site and nearest-neighbor Coulomb repulsion. Our analysis shows that the pair is long-lived and the expected decay mechanism to underlying spin excitations is actually inefficient. For a nonzero intersite Coulomb repulsion, we observe that part of the wave function remains in a bound state. Our study also provides insight on the holon-doublon propagation in real space. Because of the one-dimensional nature of the problem, these particles move in opposite directions even in the absence of an applied electric field. The potential relevance of our results to solar cell applications is discussed.