Slave-particle quantization and sum rules in the t-J model

Details Slave-particle quantization and sum rules in the t-J model Slave-particle quantization and sum rules in the t-J model

1995-08-11

arxiv.org/abs/cond-mat/9508042v1

Physics

Condensed Matter

24 pages, Plain TeX

Scientific paper

10.1103/PhysRevB.52.2403

In the framework of constrained systems, we give the classical Hamiltonian formulation of slave-particle models and their correct quantization. The electron-momentum distribution function in the t-J and Hubbard models is then studied in the framework of slave-particle approaches and within the decoupling scheme. We show that criticisms that have been addressed in this context coming from a violation of the sum rule for the physical electron are not valid. Due to the correct quantization rules for the slave-particles, the sum rule for the physical electron is indeed obeyed, both exactly and within the decoupling scheme.

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