6533b873fe1ef96bd12d560a

RESEARCH PRODUCT

QUANTUM SPIN CHAINS WITH COMPOSITE SPIN

J. TimonenJ. Sólyom

subject

PhysicsQuantum spin chainsContinuum (measurement)Condensed matter physicsHubbard modelQuantum mechanicsComposite numberGeneral EngineeringBilinear interpolationCondensed Matter::Strongly Correlated ElectronsGround state

description

The ground state of quantum spin chains with two spin-1/2 operators per site is determined from finite chain calculations and compared to predictions from the continuum limit. As particular cases, results for the spin-1 Heisenberg chain, the spin-1 model with bilinear and biquadratic exchange and the extended Hubbard model are analysed.

https://doi.org/10.1051/jphyscol:19888631