Article
Physics, Multidisciplinary
Yuta Murakami, Shintaro Takayoshi, Tatsuya Kaneko, Andreas M. Lauchli, Philipp Werner
Summary: We study the cold metastable states in one-dimensional photodoped Mott insulators and find that they exhibit spin, charge, and q-spin separation. The wave functions of these states can be expressed as IW) = IWcharge)IWspin)IWq-spin), similar to the Ogata-Shiba states in the doped Hubbard model. IWcharge) is determined by spinless free fermions, IWspin) by the isotropic Heisenberg model, and IWq-spin) by the XXZ model. We show that the q-pairing state has a central charge of 3 and the CDW phase has a central charge of 2, which we confirm numerically. Our study provides insights into the correlations between active degrees of freedom in photodoped strongly correlated systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Rebecca Kraus, Titas Chanda, Jakub Zakrzewski, Giovanna Morigi
Summary: In this article, a theoretical analysis of the phase diagram of a quantum gas of bosons interacting via repulsive dipolar interactions is conducted. Numerical techniques are used to evaluate the phase diagram for unit density, revealing a significant impact of correlated tunneling on the parameter range of the topological insulator phase.
Article
Multidisciplinary Sciences
Ta Tang, Brian Moritz, Cheng Peng, Zhi-Xun Shen, Thomas P. Devereaux
Summary: This study demonstrates that extended electron-phonon coupling is a significant factor in generating the attractive coupling observed in one-dimensional cuprate materials, and can reproduce the spectral features and doping dependence seen in experiments.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Ganesan Senthil Murugan, Suheon Lee, C. Wang, H. Luetkens, Kwang-Yong Choi, Raman Sankar
Summary: We combine μSR technique with thermodynamic measurements to explore the spin dynamics of one-dimensional S = 1/2 antiferromagnetic double chain KNaCuP2O7. Results show that the high-temperature diffusive spin transport turns into ballistic behavior below 30K. In addition, longitudinal-field μSR varies hardly with an external magnetic field.
Article
Materials Science, Multidisciplinary
Yuji Nozawa, Hirokazu Tsunetsugu
Summary: In this work, the quench dynamics in the one-dimensional Hubbard model was studied, revealing the presence of clogging phenomenon, including charge clogging and spin clogging. Different initial conditions were explored to investigate the possibility of stationary clogging, as well as the proportionality of spin and charge currents. The results indicate the coexistence of back currents and the fixation of current ratios to nonzero values in specific spatiotemporal regions.
Article
Optics
Aniket Patra, Lukas F. Buchmann, Felix Motzoi, Klaus Molmer, Jacob Sherson, Anne E. B. Nielsen
Summary: This article proposes the use of weak continuous probing to determine and define quantum phases in complex many-body systems. Through numerical simulations, the resulting phase criterion is tested and shows agreement with the quantum phase transition in the ground state of the closed system. The system's response enters a Zeno regime at high measurement strengths, suppressing transitions between eigenstates of the measurement operator.
Article
Materials Science, Multidisciplinary
A. Montorsi, U. Bhattacharya, Daniel Gonzalez-Cuadra, M. Lewenstein, G. Palumbo, L. Barbiero
Summary: The study explores higher-order topological crystalline phases in low-dimensional interacting quantum systems and interacting second-order topological insulating phases, showing distinct characteristics under strong interactions.
Article
Multidisciplinary Sciences
Peizhi Mai, Seher Karakuzu, Giovanni Balduzzi, Steven Johnston, Thomas A. Maier
Summary: The observation of fluctuating spin and charge stripes in the doped single-band Hubbard model using a quantum Monte Carlo dynamical cluster approximation (DCA) method demonstrates that they survive in the doped Hubbard model in the thermodynamic limit.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Mechanics
Juan Jose Mendoza-Arenas
Summary: This study investigates the emergence of dynamical quantum phase transitions in the extended Fermi-Hubbard model using tensor network simulations. The researchers identify various sudden interaction quenches that lead to DQPTs and establish clear connections to specific properties of observables.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Optics
Zheng Gao, Lianyi He, Huaisong Zhao, Shi-Guo Peng, Peng Zou
Summary: We calculate the density dynamic structure factor of one-dimensional Fermi superfluid with Raman-type spin-orbit coupling and analyze its main dynamical characteristics during the phase transition between Bardeen-Cooper-Schrieffer superfluid and topological superfluid. Our results show four types of single-particle excitations induced by the two-branch structure of the single-particle spectrum, and the cross single-particle excitation is more easily observed in the spin dynamic structure factor at a small transferred momentum. Additionally, we observe a new rotonlike collective mode at a fixed transferred momentum q similar to 2(k)F, which only appears in the topological superfluid state.
Article
Materials Science, Multidisciplinary
Piotr Chudzinski
Summary: The study develops a scheme to calculate the parameters of Tomonaga-Luttinger liquid and holon velocity in quasi-1D materials, focusing on two-leg ladders coupled through Coulomb interactions. By deriving an analytic formula for electron-electron interaction potential and introducing many-body screening, the study is able to determine the TLL's parameters and velocities. Experimental validation using angle-resolved photoemission spectroscopy data in NbSe3 is provided, with the applicability of the scheme to other quasi-1D systems with two-leg ladders as basic units demonstrated.
Article
Physics, Multidisciplinary
Genwang Fan, Xiao-Long Chen, Peng Zou
Summary: In this theoretical study, we investigate the Higgs oscillation in a one-dimensional Raman-type spin-orbit-coupled Fermi superfluid using the time-dependent Bogoliubov-de Gennes equations. By linearly ramping or abruptly changing the effective Zeeman field in both the Bardeen-Cooper-Schrieffer state and the topological superfluid state, we find that the amplitude of the order parameter exhibits an oscillating behavior over time with two different frequencies. We further verify the existence of these two Higgs oscillations using a periodic ramp strategy with theoretically calculated driving frequency. Our predictions would be useful for further theoretical and experimental studies of these Higgs oscillations in spin-orbit-coupled systems.
FRONTIERS OF PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Yuchi He, David Pekker, Roger S. K. Mong
Summary: In the investigation of the phase diagram of the one-dimensional repulsive Hubbard model with mass imbalance, it was found that a triplet paired phase and two additional phases (crystal phase and trion phase) can occur. These phases were characterized using the Tomonaga-Luttinger liquid theory.
Article
Physics, Multidisciplinary
Roman Rausch, Robert Peters, Tsuneya Yoshida
Summary: The paper presents a new method of analyzing and interpreting spectra in the presence of interactions using non-Hermitian phenomena. By utilizing the density-matrix renormalization group, the existence of exceptional points in the one-dimensional Hubbard chain with chiral symmetry is demonstrated, showing a Fermi arc at zero frequency in the spectrum. These points are a result of the non-Hermiticity of the effective Hamiltonian and are only present at finite temperature.
NEW JOURNAL OF PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
Riekshika Sanwari, Anurag Sahay
Summary: State space Riemannian geometry is studied for the one-dimensional Blume-Emery-Griffiths model and its limits. Two codimension one geometries are obtained and shown to be consistent with thermodynamic scalar curvature. Good agreement is found between these geometries and the correlation lengths for spin and quadrupolar order parameters.
Article
Physics, Multidisciplinary
Y-X Zhang, W-T Chiu, N. C. Costa, G. G. Batrouni, R. T. Scalettar
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
Laurent de Forges de Parny, Valery Rousseau
Summary: In this study, the ground-state phase diagram of interacting binary Bose gases trapped in two-dimensional optical lattices is investigated using quantum Monte Carlo simulations. The simulations reveal a magnetic phase transition from a x-y ferromagnetic order to a spin insulator inside the Mott insulating phase. The merging of this transition with the Mott-superfluid transition is also explored.
Article
Materials Science, Multidisciplinary
Si Min Chan, B. Gremaud, G. G. Batrouni
Summary: The study constructs three-band lattices with tunable band gap and winding number to investigate superconductivity properties. Results show that the superconducting weight varies differently with interaction strength in different scenarios.
Article
Materials Science, Multidisciplinary
Si Min Chan, B. Gremaud, G. G. Batrouni
Summary: This study investigates the superconducting and pairing properties of the attractive Hubbard model in two quasi-one-dimensional topological lattices, revealing several key findings.
Article
Optics
Shifeng Cui, B. Gremaud, Wenan Guo, G. G. Batrouni
Article
Optics
F. T. Sant'Ana, F. Hebert, V. G. Rousseau, M. Albert, P. Vignolo
Article
Materials Science, Multidisciplinary
M. Hohenadler, G. G. Batrouni
Article
Optics
Shifeng Cui, F. Hebert, B. Gremaud, V. G. Rousseau, Wenan Guo, G. G. Batrouni
Article
Materials Science, Multidisciplinary
F. Hebert, Bo Xiao, V. G. Rousseau, R. T. Scalettar, G. G. Batrouni
Article
Materials Science, Multidisciplinary
G. G. Batrouni, Richard T. Scalettar
Article
Materials Science, Multidisciplinary
K. Hettiarachchilage, C. Moore, V. G. Rousseau, K-M Tam, M. Jarrell, J. Moreno
Article
Materials Science, Multidisciplinary
Rubem Mondaini, G. G. Batrouni, B. Gremaud
Article
Optics
L. de Forges de Parny, V. G. Rousseau
