Relevant bibliographies by topics / Hubbard, bosonization, nonlocal order

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Academic literature on the topic 'Hubbard, bosonization, nonlocal order'

Author: Grafiati
Published: 14 March 2023
Last updated: 31 July 2025

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Journal articles on the topic "Hubbard, bosonization, nonlocal order"

1

Argüello-Luengo, Javier, Manfred J. Mark, Francesca Ferlaino, Maciej Lewenstein, Luca Barbiero, and Sergi Julià-Farré. "Stabilization of Hubbard-Thouless pumps through nonlocal fermionic repulsion." Quantum 8 (March 14, 2024): 1285. http://dx.doi.org/10.22331/q-2024-03-14-1285.

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Thouless pumping represents a powerful concept to probe quantized topological invariants in quantum systems. We explore this mechanism in a generalized Rice-Mele Fermi-Hubbard model characterized by the presence of competing onsite and intersite interactions. Contrary to recent experimental and theoretical results, showing a breakdown of quantized pumping induced by the onsite repulsion, we prove that sufficiently large intersite interactions allow for an interaction-induced recovery of Thouless pumps. Our analysis further reveals that the occurrence of stable topological transport at large in
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2

Hartke, Thomas, Botond Oreg, Carter Turnbaugh, Ningyuan Jia, and Martin Zwierlein. "Direct observation of nonlocal fermion pairing in an attractive Fermi-Hubbard gas." Science 381, no. 6653 (2023): 82–86. http://dx.doi.org/10.1126/science.ade4245.

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The Hubbard model of attractively interacting fermions provides a paradigmatic setting for fermion pairing. It features a crossover between Bose-Einstein condensation of tightly bound pairs and Bardeen-Cooper-Schrieffer superfluidity of long-range Cooper pairs, and a “pseudo-gap” region where pairs form above the superfluid critical temperature. We directly observe the nonlocal nature of fermion pairing in a Hubbard lattice gas, using spin- and density-resolved imaging of ∼ 1000 fermionic potassium-40 atoms under a bilayer microscope. Complete fermion pairing is revealed by the vanishing of gl
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3

Fazzini, Serena, and Arianna Montorsi. "Hidden Charge Orders in Low-Dimensional Mott Insulators." Applied Sciences 9, no. 4 (2019): 784. http://dx.doi.org/10.3390/app9040784.

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The opening of a charge gap driven by interaction is a fingerprint of the transition to a Mott insulating phase. In strongly correlated low-dimensional quantum systems, it can be associated to the ordering of hidden non-local operators. For Fermionic 1D models, in the presence of spin–charge separation and short-ranged interaction, a bosonization analysis proves that such operators are the parity and/or string charge operators. In fact, a finite fractional non-local parity charge order is also capable of characterizing some two-dimensional Mott insulators, in both the Fermionic and the bosonic
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4

MA, QINGSHAN, JIANHUI DAI, ZHAOXIN XU, and JUN ZHANG. "WEAK-COUPLING PHASE DIAGRAM OF THE ONE-DIMENSIONAL DEFORMED T-J MODEL." Modern Physics Letters A 22, no. 07n10 (2007): 733–40. http://dx.doi.org/10.1142/s021773230702333x.

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The deformed t-J lattice model is defined by replacing the fermion operators by the deformed Hubbard operators in the t-term but without changing the J-term in the conventional t-J model. The physics of this model was argued to be continuously connected to those of the t-J one when the deformation parameter λ varies from zero to unit. In this paper, by using the bosonization field theory and renormalization group technique, we study the phase diagram of the one dimension deformed t-J model in the regime where λ and J/t are both positively small but comparable to each other. By explicitly incor
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5

DING, HANQIN, and YANSHEN WANG. "PHASE DIAGRAM OF ONE-DIMENSIONAL t–U–J MODEL WITH ANISOTROPIC ANTIFERROMAGNETIC EXCHANGE." Modern Physics Letters B 24, no. 28 (2010): 2769–83. http://dx.doi.org/10.1142/s0217984910025127.

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By using the bosonization approach and the weak-coupling renormalization group (RG) techniques, we study the phase diagram of one-dimensional half-filled t–U–J model parametrized by exchange anisotropy λ (0 ≤ λ ≤ 2) in the weak-coupling regime. In the case of anisotropic antiferromagnetic exchange (J > 0) and on-site repulsion (U > 0), the ground state is characterized by the spin-density-wave (SDW) and bond-charge-density-wave (BCDW) insulating phases. We identify the SDW correlation corresponding to the transverse SDW± phases with a gapless spin excitation (Δs=0) for λ < 4/3 and to
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6

DU Zhengzhong, LI Jie, and LU Yi. "Charge Order Driven by Nonlocal Coulomb Interactions in La<sub>3</sub>Ni<sub>2</sub>O<sub>7</sub>." Acta Physica Sinica 74, no. 15 (2025): 0. https://doi.org/10.7498/aps.74.20250604.

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The bilayer nickelate La&lt;sub&gt;3&lt;/sub&gt;Ni&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;7&lt;/sub&gt;, a member of the Ruddlesden–Popper series, has recently garnered significant attention due to its superconductivity under high pressure (above 14 GPa) with a transition temperature of approximately 80 K&lt;sup&gt; [1]&lt;/sup&gt;. Its unique bilayer structure results in an electronic configuration significantly distinct from those observed in cuprates and infinite-layer nickelates. Consequently, understanding its correlated electronic structure and superconducting mechanism has emerged as a topi
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7

Cuzzuol, Nitya, Luca Barbiero, and Arianna Montorsi. "Nonlocal order parameter of pair superfluids." SciPost Physics Core 8, no. 1 (2025). https://doi.org/10.21468/scipostphyscore.8.1.020.

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Order parameters represent a fundamental resource to characterize quantum matter. We show that pair superfluids can be rigorously defined in terms of a nonlocal order parameter, named odd parity, which derivation is experimentally accessible by local density measurements. As a case of study, we first investigate a constrained Bose-Hubbard model at different densities, both in one and two spatial dimensions. Here, our analysis finds pair superfluidity for relatively strong attractive interactions. The odd parity operator acts as the unique order parameter for such phase irrespectively to the de
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8

Montorsi, Arianna, and Marco Roncaglia. "Nonlocal Order Parameters for the 1D Hubbard Model." Physical Review Letters 109, no. 23 (2012). http://dx.doi.org/10.1103/physrevlett.109.236404.

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9

Cuzzuol, Nitya, and Arianna Montorsi. "Fundamental role of nonlocal orders in 1D extended Bose–Hubbard model." Chaos: An Interdisciplinary Journal of Nonlinear Science 34, no. 6 (2024). http://dx.doi.org/10.1063/5.0206798.

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Nonlocal order parameters capture the presence of correlated fluctuations between specific degrees of freedom, in otherwise disordered quantum matter. Here, we provide a further example of their fundamental role, deriving the ground state phase diagram of the filling one extended Bose–Hubbard model, exclusively in terms of their ordering. By means of a density matrix renormalization group numerical analysis, we show that in addition to the (even) parity order characteristic of the Mott insulating phase and the string order nonvanishing in the Haldane insulator, the recently proposed odd parity
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10

Fazzini, Serena, and Arianna Montorsi. "Hidden Charge Orders in Low-Dimensional Mott Insulators." February 22, 2019. https://doi.org/10.3390/app9040784.

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Abstract:
The opening of a charge gap driven by interaction is a fingerprint of the transition to a Mott insulating phase. In strongly correlated low-dimensional quantum systems, it can be associated to the ordering of hidden non-local operators. For Fermionic 1D models, in the presence of spin–charge separation and short-ranged interaction, a bosonization analysis proves that such operators are the parity and/or string charge operators. In fact, a finite fractional non-local parity charge order is also capable of characterizing some two-dimensional Mott insulators, in both the Fermionic and the bosonic
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Dissertations / Theses on the topic "Hubbard, bosonization, nonlocal order"

1

FAZZINI, SERENA. "Non-local orders in Hubbard-like low dimensional systems." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2703392.

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This PhD thesis is devoted to explore non-local orders in low-dimensional Hubbard-like systems. This kind of systems plays a crucial role in condensed matter physics. They were originally introduced to model solid state materials and, indeed, they successfully describe many observed physical phenomena. Additionally, in last decades, their scientific interest has exponentially increased thanks to the experiments with cold atoms, which have opened the opportunity to simulate and manipulate this type of lattice models. Trapping ultracold atomic gases into an optical lattice potential provides the
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