Published May 8, 2007
| Version v1
Journal article
Variational study of the one dimensional t-J model: a unified description of the ground state phase diagram
Creators
- 1. Center for Advanced Study, Tsinghua University, Beijing 100084 (China)
- 2. Department of Physics, Renmin University of China, Beijing 100872 (China)
Description
We find that the Gutzwiller projected Fermi sea wavefunction (GPWF) has the correct phase structure to describe the kink nature of the doped holes in the ground state of the one dimensional t-J model. We find the residual charge correlation beyond the GPWF is well described by an XXZ-type effective Hamiltonian. A Pfaffian-type variational wavefunction with only one parameter is proposed based on this observation and is found to reproduce correctly the global phase diagram and correlation functions of the one dimensional t-J model in both the Tomonaga-Luttinger regime and the Luther-Emery regime
Additional details
Identifiers
- DOI
- 10.1088/0953-8984/19/18/186218;
- PII
- S0953-8984(07)37930-7;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 19
- Journal Issue
- 18
- Journal Page Range
- p. 186218
- ISSN
- 0953-8984
- CODEN
- JCOMEL
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38078188
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CORRELATION FUNCTIONS; CORRELATIONS; DOPED MATERIALS; GROUND STATES; HAMILTONIANS; HOLES; MATHEMATICAL MODELS; PHASE DIAGRAMS; VARIATIONAL METHODS; WAVE FUNCTIONS
- Descriptors DEC
- CALCULATION METHODS; DIAGRAMS; ENERGY LEVELS; FUNCTIONS; INFORMATION; MATERIALS; MATHEMATICAL OPERATORS; QUANTUM OPERATORS