Physica A: Statistical Mechanics and its Applications, ISSN 0378-4371, 11/2016, Volume 461, pp. 487 - 497

The charge ordering is a phenomenon associated with inhomogeneous distribution of electron density occurring mostly in strongly correlated materials such as...

Charge-ordered system | Mean-field approximation | Phase diagram | Multicritical behaviour | Extended Hubbard model | Atomic limit | LOCALIZED STATE | GROUND-STATE | PHYSICS, MULTIDISCIPLINARY | ZERO-BANDWIDTH LIMIT | ITINERANT FERMION SYSTEMS | NEAREST-NEIGHBOR | NARROW-BAND SYSTEM | SITE ATTRACTION | HARTREE THEORY | CHARGE ORDERINGS | 2 DIMENSIONS | Organic conductors | Analysis | Transition metal compounds | Charge density | Phase diagrams | Approximation | Mathematical analysis | Mathematical models | Statistical mechanics | Electron density | Atomic structure

Charge-ordered system | Mean-field approximation | Phase diagram | Multicritical behaviour | Extended Hubbard model | Atomic limit | LOCALIZED STATE | GROUND-STATE | PHYSICS, MULTIDISCIPLINARY | ZERO-BANDWIDTH LIMIT | ITINERANT FERMION SYSTEMS | NEAREST-NEIGHBOR | NARROW-BAND SYSTEM | SITE ATTRACTION | HARTREE THEORY | CHARGE ORDERINGS | 2 DIMENSIONS | Organic conductors | Analysis | Transition metal compounds | Charge density | Phase diagrams | Approximation | Mathematical analysis | Mathematical models | Statistical mechanics | Electron density | Atomic structure

Journal Article

Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, 02/2015, Volume 48, Issue 4, pp. 45301 - 7

The extended Bose-Hubbard model for a double-well potential with pair tunneling is studied through both exact diagonalization and mean field theory (MFT). When...

Extended bose-hubbard model | Effective ground state | Pair tunneling | QUANTUM DYNAMICS | EINSTEIN CONDENSATION | pair tunneling | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | effective ground state | extended Bose-Hubbard model | OPTICS | Optical lattices | Broken symmetry | Spontaneous | Tunneling | Ground state | Mathematical models | Order parameters | Wavefunctions | Fragmentation

Extended bose-hubbard model | Effective ground state | Pair tunneling | QUANTUM DYNAMICS | EINSTEIN CONDENSATION | pair tunneling | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | effective ground state | extended Bose-Hubbard model | OPTICS | Optical lattices | Broken symmetry | Spontaneous | Tunneling | Ground state | Mathematical models | Order parameters | Wavefunctions | Fragmentation

Journal Article

Annalen der Physik, ISSN 0003-3804, 01/2018, Volume 530, Issue 1, pp. 1700245 - n/a

A spinor (F=1) Bose gas is studied in presence of a density‐density interaction through a mean field approach and a perturbation theory for either sign of the...

harmonic confinement | Bose Hubbard model | Mott insulating | spinor ultra‐cold atoms | superfluid | charge density wave | extended interaction | supersolid | spinor ultra-cold atoms | STATES | PHYSICS, MULTIDISCIPLINARY | Analysis | Ferromagnetism | Charge density | Perturbation theory | Antiferromagnetism | Phases | Perturbation methods | Absorption spectra | Lobes | Physics - Quantum Gases

harmonic confinement | Bose Hubbard model | Mott insulating | spinor ultra‐cold atoms | superfluid | charge density wave | extended interaction | supersolid | spinor ultra-cold atoms | STATES | PHYSICS, MULTIDISCIPLINARY | Analysis | Ferromagnetism | Charge density | Perturbation theory | Antiferromagnetism | Phases | Perturbation methods | Absorption spectra | Lobes | Physics - Quantum Gases

Journal Article

Journal of Superconductivity and Novel Magnetism, ISSN 1557-1939, 7/2019, Volume 32, Issue 7, pp. 1951 - 1966

The characteristics of the extended Hubbard model with the pair–hopping interaction J, i.e. the Penson–Kolb–Hubbard model, are analysed for the case of...

Condensed Matter Physics | Phase separation | Superconductivity | Characterization and Evaluation of Materials | s–wave | Attractive pair–hopping interaction | Strongly Correlated Systems, Superconductivity | Mean-field | Physics | Magnetism, Magnetic Materials | Extended Hubbard model | SUPERFLUID CHARACTERISTICS | PHYSICS, CONDENSED MATTER | HIGH-TEMPERATURE SUPERCONDUCTIVITY | PHYSICS, APPLIED | NEGATIVE-U | GROUND-STATE | PENETRATION-DEPTH | PENSON-KOLB MODEL | BANDWIDTH LIMIT | METASTABILITY | Attractive pair-hopping interaction | ORDER-PARAMETER | CROSSOVER | s-wave | Thermodynamics | Superconductors | Models | Electromagnetism | Analysis

Condensed Matter Physics | Phase separation | Superconductivity | Characterization and Evaluation of Materials | s–wave | Attractive pair–hopping interaction | Strongly Correlated Systems, Superconductivity | Mean-field | Physics | Magnetism, Magnetic Materials | Extended Hubbard model | SUPERFLUID CHARACTERISTICS | PHYSICS, CONDENSED MATTER | HIGH-TEMPERATURE SUPERCONDUCTIVITY | PHYSICS, APPLIED | NEGATIVE-U | GROUND-STATE | PENETRATION-DEPTH | PENSON-KOLB MODEL | BANDWIDTH LIMIT | METASTABILITY | Attractive pair-hopping interaction | ORDER-PARAMETER | CROSSOVER | s-wave | Thermodynamics | Superconductors | Models | Electromagnetism | Analysis

Journal Article

中国物理B：英文版, ISSN 1674-1056, 2013, Volume 22, Issue 9, pp. 539 - 546

We study systematically an extended Bose-Hubbard model on the triangular lattice by means of a meanfield method based on the Gutzwiller ansatz. Pair hopping...

量子 | 三角晶格 | 稳定性 | 相图 | 玻色 | Hubbard模型 | 跳频 | 固体相 | pair supersolid | zero-temperature phase diagram | extended Bose-Hubbard model | pair hopping | GASES | PHYSICS, MULTIDISCIPLINARY | SUPERSOLIDS | ATOMS | PHYSICS | OPTICAL LATTICES | SUPERFLUID | Phase diagrams | Stability | Phase transformations | Lattices | Physics - Quantum Gases

量子 | 三角晶格 | 稳定性 | 相图 | 玻色 | Hubbard模型 | 跳频 | 固体相 | pair supersolid | zero-temperature phase diagram | extended Bose-Hubbard model | pair hopping | GASES | PHYSICS, MULTIDISCIPLINARY | SUPERSOLIDS | ATOMS | PHYSICS | OPTICAL LATTICES | SUPERFLUID | Phase diagrams | Stability | Phase transformations | Lattices | Physics - Quantum Gases

Journal Article

Journal of Statistical Mechanics: Theory and Experiment, ISSN 1742-5468, 05/2008, Volume 2008, Issue 5, p. P05018

We investigate the spreading of information in a one-dimensional Bose-Hubbard system after a sudden parameter change. In particular, we study the time...

Hubbard and related models (theory) | Entanglement in extended quantum systems (theory) | Correlation functions (theory) | Density matrix renormalization group calculations | density matrix renormalization group calculations | TIME EVOLUTION | INSULATOR | QUANTUM | PHYSICS, MATHEMATICAL | DENSITY-MATRIX RENORMALIZATION | OPTICAL LATTICES | SUPERFLUID | TRANSITION | MECHANICS | GAS | ATOMS | correlation functions (theory) | MANY-BODY SYSTEMS | entanglement in extended quantum systems (theory) | Physics - Other Condensed Matter

Hubbard and related models (theory) | Entanglement in extended quantum systems (theory) | Correlation functions (theory) | Density matrix renormalization group calculations | density matrix renormalization group calculations | TIME EVOLUTION | INSULATOR | QUANTUM | PHYSICS, MATHEMATICAL | DENSITY-MATRIX RENORMALIZATION | OPTICAL LATTICES | SUPERFLUID | TRANSITION | MECHANICS | GAS | ATOMS | correlation functions (theory) | MANY-BODY SYSTEMS | entanglement in extended quantum systems (theory) | Physics - Other Condensed Matter

Journal Article

Physica B: Physics of Condensed Matter, ISSN 0921-4526, 05/2018, Volume 536, pp. 474 - 478

Exploiting the matrix-product-state based density-matrix renormalization group (DMRG) technique we study the one-dimensional extended (U-V) Hubbard model with...

(tricritical) Ising universality class | Extended Hubbard model | TRANSITION | INVARIANCE | PHYSICS, CONDENSED MATTER | TRICRITICAL ISING-MODEL | SPECTRUM | CHAINS | 2 DIMENSIONS | Specific gravity | Analysis | Physics - Strongly Correlated Electrons

(tricritical) Ising universality class | Extended Hubbard model | TRANSITION | INVARIANCE | PHYSICS, CONDENSED MATTER | TRICRITICAL ISING-MODEL | SPECTRUM | CHAINS | 2 DIMENSIONS | Specific gravity | Analysis | Physics - Strongly Correlated Electrons

Journal Article

International Journal of Theoretical Physics, ISSN 0020-7748, 9/2019, Volume 58, Issue 9, pp. 3149 - 3157

Metal-insulator and CDW-SDW transitions are studied in the one-dimensional Extended Hubbard Model at half-filling by analysing the behaviour of local...

Quantum phase transition | Quantum entanglement | Theoretical, Mathematical and Computational Physics | Quantum Physics | Physics, general | Physics | Elementary Particles, Quantum Field Theory | 1D extended Hubbard model | PHYSICS, MULTIDISCIPLINARY | CHARGE | Atoms | Analysis

Quantum phase transition | Quantum entanglement | Theoretical, Mathematical and Computational Physics | Quantum Physics | Physics, general | Physics | Elementary Particles, Quantum Field Theory | 1D extended Hubbard model | PHYSICS, MULTIDISCIPLINARY | CHARGE | Atoms | Analysis

Journal Article

Physics Letters A, ISSN 0375-9601, 05/2019, Volume 383, Issue 14, pp. 1666 - 1670

We analytically study the quantum phase diagrams of ultracold dipolar Bose gases in an optical square lattice at zero temperature by using the generalized...

Extended Bose-Hubbard model | Ultracold Bose gases | Quantum phase transition | Generalized effective-potential Landau theory | PHYSICS, MULTIDISCIPLINARY | INSULATOR | ULTRACOLD | BOSONS | SUPERFLUID | QUANTUM PHASE-TRANSITION | GAS | ATOMS | EDGE STATES | Physics - Quantum Gases

Extended Bose-Hubbard model | Ultracold Bose gases | Quantum phase transition | Generalized effective-potential Landau theory | PHYSICS, MULTIDISCIPLINARY | INSULATOR | ULTRACOLD | BOSONS | SUPERFLUID | QUANTUM PHASE-TRANSITION | GAS | ATOMS | EDGE STATES | Physics - Quantum Gases

Journal Article

Journal of the Physical Society of Japan, ISSN 0031-9015, 2006, Volume 75, Issue 12, pp. 123701 - 1"-"123701-4

Photoconversion from a charge density wave (CDW) state to a Mott-Hubbard (MH) state in a one-dimensional (1D) extended Peierls-Hubbard system is observed by...

photoinduced phase transition | Mott-Hubbard | coherent oscillation | charge density wave | Coherent oscillation | Charge density wave | Photoinduced phase transition | N-ELECTRONS SYSTEM | TRANSITION-METAL COMPLEXES | MIXED-VALENCE | PHYSICS, MULTIDISCIPLINARY | NONLINEAR LATTICE-RELAXATION | TRANSFER EXCITATION | 2-BAND MODEL | SOLITON

photoinduced phase transition | Mott-Hubbard | coherent oscillation | charge density wave | Coherent oscillation | Charge density wave | Photoinduced phase transition | N-ELECTRONS SYSTEM | TRANSITION-METAL COMPLEXES | MIXED-VALENCE | PHYSICS, MULTIDISCIPLINARY | NONLINEAR LATTICE-RELAXATION | TRANSFER EXCITATION | 2-BAND MODEL | SOLITON

Journal Article

Journal of physics. Condensed matter : an Institute of Physics journal, ISSN 0953-8984, 01/2019, Volume 31, Issue 12, p. 125601

Using functional renormalization group method, we studied the phase diagram of the one- dimensional extended Hubbard model at different dopings. At half...

p -wave superconductivity (PSC) | s-wave superconductivity (SSC) | functional renormalization group (FRG) | phase diagram (PD) | bond order wave (BOW) | extended Hubbard model (EHM) | TRANSITION | WAVE | PHYSICS, CONDENSED MATTER | SUPERCONDUCTIVITY | p-wave superconductivity (PSC)

p -wave superconductivity (PSC) | s-wave superconductivity (SSC) | functional renormalization group (FRG) | phase diagram (PD) | bond order wave (BOW) | extended Hubbard model (EHM) | TRANSITION | WAVE | PHYSICS, CONDENSED MATTER | SUPERCONDUCTIVITY | p-wave superconductivity (PSC)

Journal Article

Journal of the Physical Society of Japan, ISSN 0031-9015, 2008, Volume 77, Issue 11, pp. 114713 - 114713

We discuss the shifted conjugate-orthogonal-conjugate-gradient (COCG) method, which can be used to solve a series of linear equations generated by a number of...

large matrix | seed switching | excitation spectra | conjugate-orthogonal-conjugate-gradient method | Green's function | multiorbital extended Hubbard model | shifted linear systems | Multiorbital extended hubbard model | Shifted linear systems | Excitation spectra | Large matrix | Seed switching | Conjugate-orthogonal-conjugate-gradient method | PHYSICS, MULTIDISCIPLINARY

large matrix | seed switching | excitation spectra | conjugate-orthogonal-conjugate-gradient method | Green's function | multiorbital extended Hubbard model | shifted linear systems | Multiorbital extended hubbard model | Shifted linear systems | Excitation spectra | Large matrix | Seed switching | Conjugate-orthogonal-conjugate-gradient method | PHYSICS, MULTIDISCIPLINARY

Journal Article

J Phys Soc Jpn, ISSN 0031-9015, 1/2013, Volume 82, Issue 1, pp. 014702 - 014702-9

In order to study the pairing symmetry in non-centrosymmetric superconductors, we solve the linearized Éliashberg's equation on the two-dimensional extended...

Spin-orbit coupling | Superconductivity | Non-centrosymmetric | Pairing symmetry | Random phase approximation | Extended Hubbard model | Strongly correlated electron system | SYSTEM | superconductivity | PHYSICS, MULTIDISCIPLINARY | spin-orbit coupling | PRESSURE-INDUCED SUPERCONDUCTIVITY | extended Hubbard model | strongly correlated electron system | CHARGE FLUCTUATION | ORDER | INVERSION SYMMETRY | non-centrosymmetric | random phase approximation | pairing symmetry | Physics - Superconductivity

Spin-orbit coupling | Superconductivity | Non-centrosymmetric | Pairing symmetry | Random phase approximation | Extended Hubbard model | Strongly correlated electron system | SYSTEM | superconductivity | PHYSICS, MULTIDISCIPLINARY | spin-orbit coupling | PRESSURE-INDUCED SUPERCONDUCTIVITY | extended Hubbard model | strongly correlated electron system | CHARGE FLUCTUATION | ORDER | INVERSION SYMMETRY | non-centrosymmetric | random phase approximation | pairing symmetry | Physics - Superconductivity

Journal Article

Journal of Physics A: Mathematical and Theoretical, ISSN 1751-8113, 09/2016, Volume 49, Issue 41, p. 415001

We show that the one-dimensional extended Hubbard model has saturated ferromagnetic ground states with the spin-triplet electron pair condensation in a certain...

spin-triplet pair | exact ground state | ferromagnetism | extended Hubbard model | Majorana edge state | PHYSICS, MULTIDISCIPLINARY | MAJORANA FERMIONS | PHYSICS, MATHEMATICAL | Physics - Strongly Correlated Electrons

spin-triplet pair | exact ground state | ferromagnetism | extended Hubbard model | Majorana edge state | PHYSICS, MULTIDISCIPLINARY | MAJORANA FERMIONS | PHYSICS, MATHEMATICAL | Physics - Strongly Correlated Electrons

Journal Article

Journal of Physics: Condensed Matter, ISSN 0953-8984, 03/2011, Volume 23, Issue 10, pp. 105601 - 12

We have studied the extended Hubbard model in the atomic limit. The Hamiltonian analysed consists of the effective on-site interaction U and the intersite...

PHASE-SEPARATION | HALF-FILLED-BAND | PHYSICS, CONDENSED MATTER | THERMODYNAMIC PROPERTIES | SUPERCONDUCTIVITY | GROUND-STATE | BEHAVIOR | SYSTEMS | LATTICE | DIAGRAM | CHARGE ORDERINGS | Thermodynamics | Quantum Theory | Temperature | Models, Chemical | Anisotropy | Computer Simulation | Phase Transition | Electrons | Phase diagrams | Approximation | Condensed matter | Interaction parameters | Mathematical analysis | Charge | Insulators | Carbon monoxide

PHASE-SEPARATION | HALF-FILLED-BAND | PHYSICS, CONDENSED MATTER | THERMODYNAMIC PROPERTIES | SUPERCONDUCTIVITY | GROUND-STATE | BEHAVIOR | SYSTEMS | LATTICE | DIAGRAM | CHARGE ORDERINGS | Thermodynamics | Quantum Theory | Temperature | Models, Chemical | Anisotropy | Computer Simulation | Phase Transition | Electrons | Phase diagrams | Approximation | Condensed matter | Interaction parameters | Mathematical analysis | Charge | Insulators | Carbon monoxide

Journal Article

Superlattices and Microstructures, ISSN 0749-6036, 2014, Volume 73, pp. 306 - 310

Using an exact diagonlization for finite square lattice and taking into account the periodic boundary conditions in the two directions, we study the spin-spin...

Extended Hubbard Model | Antiferromagnetic correlated electrons system | PHASE-SEPARATION | PHYSICS, CONDENSED MATTER

Extended Hubbard Model | Antiferromagnetic correlated electrons system | PHASE-SEPARATION | PHYSICS, CONDENSED MATTER

Journal Article

Molecular Crystals and Liquid Crystals: 13th International Conference on Frontiers of Polymers and Advanced Materials (ICFPAM 2015), ISSN 1542-1406, 03/2016, Volume 628, Issue 1, pp. 162 - 166

The ground state of the two-dimensional Extended Hubbard Model is studied within an exact analytical diagonalization. The Charge and magnetic properties are...

Spin-spin interaction | off-site coulomb interaction | Extended Hubbard model | TRANSITION | ELECTRON CORRELATIONS | MATERIALS SCIENCE, MULTIDISCIPLINARY | STATE | CRYSTALLOGRAPHY | CHEMISTRY, MULTIDISCIPLINARY | PHASE-DIAGRAM | Charged particles | Magnetism | Coulomb friction | Mathematical analysis | Crystals | Charge | Ground state | Two dimensional | Liquid crystals | Magnetic properties

Spin-spin interaction | off-site coulomb interaction | Extended Hubbard model | TRANSITION | ELECTRON CORRELATIONS | MATERIALS SCIENCE, MULTIDISCIPLINARY | STATE | CRYSTALLOGRAPHY | CHEMISTRY, MULTIDISCIPLINARY | PHASE-DIAGRAM | Charged particles | Magnetism | Coulomb friction | Mathematical analysis | Crystals | Charge | Ground state | Two dimensional | Liquid crystals | Magnetic properties

Journal Article

Journal of Statistical Mechanics: Theory and Experiment, ISSN 1742-5468, 09/2014, Volume 2014, Issue 9, pp. P09025 - 35

We study Renyi and von Neumann entanglement entropies in the ground state of the one dimensional quarter-filled Hubbard model with periodic boundary...

bosonisation | conformal field theory (theory) | entanglement in extended quantum systems (theory) | quantum integrability (Bethe Ansatz) | ONE-DIMENSION | CHAIN | MATRIX RENORMALIZATION-GROUP | MECHANICS | SPIN | FERMIONS | PHYSICS, MATHEMATICAL | ELECTRON-SYSTEMS | Operators | Accessibility | Mathematical analysis | Field theory | Mathematical models | Entanglement | Entropy | Statistical mechanics | Density

bosonisation | conformal field theory (theory) | entanglement in extended quantum systems (theory) | quantum integrability (Bethe Ansatz) | ONE-DIMENSION | CHAIN | MATRIX RENORMALIZATION-GROUP | MECHANICS | SPIN | FERMIONS | PHYSICS, MATHEMATICAL | ELECTRON-SYSTEMS | Operators | Accessibility | Mathematical analysis | Field theory | Mathematical models | Entanglement | Entropy | Statistical mechanics | Density

Journal Article