Zero Temperature Series Expansions for the Kondo Lattice Model
W. Zheng, J. Oitmaa (Univ. of New South Wales, Sydney, Australia)
TL;DR
This paper develops high-order series expansions to analyze the Kondo lattice model across multiple dimensions, providing insights into ground states, excitations, and quantum phase transitions in strongly correlated electron systems.
Contribution
It introduces new high-order linked-cluster series expansion results for the Kondo lattice model in 1D, 2D, and 3D, advancing understanding of its quantum phase behavior.
Findings
Ground state properties at half-filling characterized.
Spin and charge excitation spectra analyzed.
Quantum phase transition explored and characterized.
Abstract
We present new results for the Kondo lattice model of strongly correlated electrons, in 1-, 2-, and 3-dimensions, obtained from high-order linked-cluster series expansions. Results are given for varies ground state properties at half-filling, and for spin and charge excitations. The existence and nature of the predicted quantum phase transition are explored.
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