Spin-incoherent behavior in the ground state of strongly correlated systems

Abstract

It is commonly believed that strongly interacting one-dimensional Fermi systems with gapless excitations are effectively described by Luttinger liquid theory. However, when the temperature of the system is high compared to the spin energy, but small compared to the charge energy, the system becomes "spin-incoherent". We present numerical evidence showing that the one-dimensional "t-J-Kondo" lattice, consisting of a t-J chain interacting with localized spins, displays all the characteristic signatures of spin-incoherent physics, but in the {\it ground state}. We argue that similar physics may be present in a wide range of strongly interacting systems.

4 pages, 2 figs. New figs, including phase diagram, and expanded theory

References in corpus (20)

• Real time evolution using the density matrix renormalization group
• Time-dependent density-matrix renormalization-group using adaptive effective Hilbert spaces
• Theory of the field-induced gap in $S=1/2$ antiferromagnetic chains
• Finite Temperature Density Matrix Renormalization using an enlarged Hilbert space
• The spin-incoherent Luttinger liquid
• Green's function for magnetically incoherent interacting electrons in one dimension
• Localization Transition in a Ballistic Quantum Wire
• Spin and charge gaps in the one-dimensional Kondo-lattice model with Coulomb interaction between conduction electrons
• The one dimensional Kondo lattice model at partial band filling
• Spin-Incoherent Transport in Quantum Wires
• Spectral properties of a spin-incoherent Luttinger Liquid
• Low-temperature crossover in the momentum distribution of cold atomic gases in one dimension
• Ground-state properties of the One-dimensional Kondo Lattice at partial Band-filling
• Fermi Surface of The One-dimensional Kondo Lattice Model
• Fourier transform of the $2k_F$ Luttinger liquid density correlation function with different spin and charge velocities
• Quasiparticles in the Kondo lattice model at partial fillings of the conduction band
• Local Moments Coupled to a Strongly Correlated Electron Chain
• The Kondo lattice model with correlated conduction electrons
• Topological Confinement and Superconductivity
• Singular responses of spin-incoherent Luttinger liquids

Cited by in corpus (14)

• Quantum Magnetism with Polar Alkali Dimers
• Finite temperature dynamics of the Mott insulating Hubbard chain
• Topological Insulators and Quantum Spin Liquids
• Real time evolution at finite temperatures with operator space matrix product states
• Thermal conductivity of the one-dimensional Fermi-Hubbard model
• Time and momentum-resolved tunneling spectroscopy of pump-driven non-thermal excitations in Mott insulators
• An entropy perspective on the thermal crossover in a fermionic Hubbard chain
• Excitonic density-waves, bi-excitons and orbital selective pairing in two-orbital correlated chains
• Hund bands in spectra of multiorbital systems
• Fractional exclusion statistics and thermodynamics of the Hubbard chain in the spin-incoherent Luttinger liquid regime
• Spectral function of the $U\to \infty$ one dimensional Hubbard model at finite temperature and the crossover to the spin incoherent regime
• Class of variational ansaetze for the "spin-incoherent" ground-state of a Luttinger liquid coupled to a spin bath
• In a tight spot, spin and charge separate
• Dynamics of heat and mass transport in a quantum insulator