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Theoretical investigation of four-body interaction in the one-dimensional extended Hubbard model
- Source :
- Results in Physics, Vol 34, Iss , Pp 105250- (2022)
- Publication Year :
- 2022
- Publisher :
- Elsevier, 2022.
-
Abstract
- In the weak-coupling regime, we analytically investigate phase diagram of a one-dimensional half-filled extended Hubbard model with nearest neighboring four-electron interaction (Q), in addition to the usual two-electron couplings (U,V>0). The additional four-electron coupling splits independent Gaussian and spin-gap transitions and also leads to the charge-gap transition. For the positive Q, the ground state exhibits three insulating phases, charge-density-wave (CDW), spin-density-wave (SDW) and bond-spin-density-wave (BSDW). For the negative Q, the phase diagram consists of five phases, which, besides the SDW and CDW phases, contain bond-charge-density-wave (BCDW), Luttinger liquid (LL) and Luther–Emery (LE) phases.
Details
- Language :
- English
- ISSN :
- 22113797
- Volume :
- 34
- Issue :
- 105250-
- Database :
- Directory of Open Access Journals
- Journal :
- Results in Physics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.8e235c57014422385e0f53d7cec2cbb
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.rinp.2022.105250