Article
Materials Science, Multidisciplinary
Balazs Dora, Miklos Antal Werner, Catalin Pascu Moca
Summary: The quantum quench dynamics of the interacting Hatano-Nelson model with open boundary conditions is investigated using Abelian bosonization and numerical methods. The evolution of particle density and current profile in real space over time is followed by turning on or off the imaginary vector potential in the presence of weak interactions. The results show spatiotemporal Friedel oscillations with light cones propagating ballistically from the open ends, accompanied by local currents of equal magnitude for both switching protocols. The bosonization method accurately describes the density and current patterns with a single overall fitting parameter. The continuity equation is satisfied by the long-wavelength part of the density and current, despite the nonunitary time evolution when the Hatano-Nelson term is switched on.
Article
Materials Science, Multidisciplinary
Moallison F. Cavalcante, Rodrigo G. Pereira, Maria C. O. Aguiar
Summary: We investigate the dynamics of the Kondo effect in a system of two metallic Hubbard chains coupled to a magnetic impurity after a quantum quench. For noninteracting electrons, the charge current across the impurity is determined by a scaling function involving the Kondo time. In the case of interacting electrons, we observe a decrease in the Kondo time with increasing repulsive interaction strength, and the time dependence of the current exhibits characteristics of the Kondo effect in a Luttinger liquid. Our findings emphasize the significance of nonequilibrium dynamics in studying quantum impurities in interacting systems.
Article
Materials Science, Multidisciplinary
Tony Jin, Paola Ruggiero, Thierry Giamarchi
Summary: We derive the bosonization of the interacting fermionic Su-Schrieffer-Heeger (SSH) model with open boundaries and use it to quantitatively describe the edge modes of the system. Our results show excellent agreement with numerical simulations, particularly in terms of the localization of the zero-energy edge mode near the boundaries. Interestingly, we find that the effects of repulsive or attractive interactions on the edge mode localization depend on the staggering parameter. We provide quantitative predictions of these effects on the localization length of the edge mode and suggest that bosonization can be generalized to other models.
Article
Physics, Condensed Matter
Kai-Hua Yang, Yi-Fan Wu, Ai-ai Yang, Huai-Yu Wang, Xu Wang
Summary: This study investigates the interplay of intralead and dot-lead Coulomb interactions on the shot noise of a quantum dot coupled to Luttinger-liquid leads in the Kondo regime. The results show that these interactions not only improve the shot noise but also affect its features and the value of the Fano factor.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Physics, Multidisciplinary
G. Gouraud, P. Le Doussal, G. Schehr
Summary: This paper investigates the quench dynamics of non-interacting fermions in one dimension with a finite-size impurity at the origin. The impurity is characterized by momentum-dependent reflection and transmission coefficients that change at time t = 0. The initial state is at equilibrium and the system is divided into two independent halves. The exact large time limit of the multi-time correlations is obtained, showing nontrivial relaxational properties related to the behavior of single particle wave functions.
Article
Materials Science, Ceramics
Rushi K. Kathiria, Seohyeon Jo, Rishi Raj, Devinder Yadav
Summary: Specimens triggered with flash heating can be held in Stage III both outside the furnace and immersed in liquid nitrogen, with the possibility of locking this state by turning off the power. Materials in this state exhibit metallic behavior, with a conductivity of approximately 11 S/m at room temperature, and enable ex-situ characterization of structural changes induced by flash activation.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Polymer Science
Sarath Chandra Varma, Abhineet Singh Rajput, Aloke Kumar
Summary: This study investigates the formation and development of neck droplets during coalescence using high-speed imaging. Based on the concentration ratio, three different regimes are identified, and it is found that the growth of the neck droplet radius follows different power-law behavior. A new measurement technique is proposed based on the dependence of the power-law exponent on concentration ratios, which can potentially predict the relaxation time of fluids in the elasticity dominated regime.
Article
Chemistry, Physical
H. Fabrelli, A. P. Vieira, A. Paduan-Filho, R. S. Freitas
Summary: Through experimental and theoretical techniques, a study on the spin-1 field-induced antiferromagnet NiCl2-4SC(NH2)(2) was conducted to delimit the Tomonaga-Luttinger liquid region and verify discrepancies in the value of the single-ion anisotropy parameter D.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Huimin Zhang, Qiang Zou, Lian Li
Summary: The study revealed the presence of helical edge states in FeSe multilayer films, with density of states following a power law characteristic of Tomonaga-Luttinger liquid, and corresponding Luttinger parameters of 0.26 and 0.43 at the {100}Se and {110}Se edges respectively. These results demonstrate strong correlations and nontrivial excitations in FeSe, providing insights into topological properties and novel phenomena in helical edge channels.
Article
Psychology, Multidisciplinary
Xiaobin Ran, Yuquan Xu, Yuewen Liu, Jinhu Jiang
Summary: This study examines the impact of migration on online social network behavior in China, finding that migration increases the formation of social ties but decreases the number of messages sent. The study also reveals moderating effects of migrants' characteristics, such as gender, age, and degree, on these behaviors.
COMPUTERS IN HUMAN BEHAVIOR
(2022)
Article
Quantum Science & Technology
Yichen Hu, Biao Lian
Summary: We investigate the homogeneous chiral edge theory of the filling v = 4/3 fractional quantum Hall state, and identify two solvable cases. We find that the energy spectrum shows Poisson level spacing statistics and can transition to Wigner-Dyson with the inclusion of a global symmetry preserving irrelevant nonlinear kinetic term.
Article
Physics, Multidisciplinary
D. Spehner, L. Morales-Molina, S. A. Reyes
Summary: This study investigates the persistent currents and interspecies entanglement generation in a Bose-Bose mixture formed by two atomic gases trapped in a one-dimensional ring lattice potential. The research shows that after a sudden quench to strong interactions between the two gases, the current of gas B decreases relative to its initial value and is quadratically related to the visibility of gas A. Additionally, the second Renyi entropy of the reduced state scales linearly with the number of sites and is proportional to the relative decrease of the current, measuring the amount of entanglement between the two gases.
NEW JOURNAL OF PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Kai-Hua Yang, Xiao-Hui Liang, Huai-Yu Wang, Yi-Fan Wu, Qian-Qian Yang
Summary: In this work, a theoretical model is proposed to achieve the controllability of quantum interference and decoherence. The effects of intralead Coulomb interaction, interdot tunneling, and electron-phonon interactions on differential conductance are investigated. The results show the appearance of destructive interference, Fano interference, and negative differential conductance in strong dot-lead tunneling regions, while a characteristic pattern of positive and negative differential conductances appears in the weak dot-lead tunneling regime.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Chemistry, Multidisciplinary
Yang Feng, Jinjiang Zhu, Weiyan Lin, Zichen Lian, Yongchao Wang, Hao Li, Hongxu Yao, Qiushi He, Yinping Pan, Yang Wu, Jinsong Zhang, Yayu Wang, Xiaodong Zhou, Jian Shen, Yihua Wang
Summary: We search for evidence of a boundary helical Luttinger liquid (HLL) on the edge of a recently discovered topological antiferromagnet (AFM), MnBi2Te4 even-layer, and directly image the helical edge current using a scanning superconducting quantum interference device. The observed helical edge state accompanies an insulating bulk with a topological difference from the ferromagnetic Chern insulator phase. The edge conductance of the AFM order follows a power law as a function of temperature and source-drain bias, providing strong evidence for the existence of HLL. The observed HLL is robust at finite fields below the quantum critical point. The discovery of HLL in a layered AFM semiconductor has important implications for future spintronics and quantum computation.
Article
Physics, Multidisciplinary
Paola Ruggiero, Pasquale Calabrese, Benjamin Doyon, Jerome Dubail
Summary: In this study, the theory of quantum generalized hydrodynamics (QGHD) is applied to derive exact results for density fluctuations and entanglement entropy of a one-dimensional trapped Bose gas after a trap quench. The analytical calculations demonstrate the quadratic nature of QGHD and the emergence of conformal invariance at the Tonks-Girardeau (TG) point. The numerical simulations show excellent agreement with the analytical predictions, with a more accurate representation achieved due to the free nature of the TG gas.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Multidisciplinary Sciences
Vir B. Bulchandani, Christoph Karrasch, Joel E. Moore
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Physics, Multidisciplinary
C. Kloeckner, D. M. Kennes, C. Karrasch
NEW JOURNAL OF PHYSICS
(2020)
Article
Physics, Multidisciplinary
C. Kloeckner, C. Karrasch, D. M. Kennes
PHYSICAL REVIEW LETTERS
(2020)
Article
Engineering, Electrical & Electronic
Hsin-Zon Tsai, Johannes Lischner, Arash A. Omrani, Franklin Liou, Andrew S. Aikawa, Christoph Karrasch, Sebastian Wickenburg, Alexander Riss, Kyler C. Natividad, Jin Chen, Won-Woo Choi, Kenji Watanabe, Takashi Taniguchi, Chenliang Su, Steven G. Louie, Alex Zettl, Jiong Lu, Michael F. Crommie
NATURE ELECTRONICS
(2020)
Review
Physics, Multidisciplinary
B. Bertini, F. Heidrich-Meisner, C. Karrasch, T. Prosen, R. Steinigeweg, M. Znidaric
Summary: Significant progress has been made in the theoretical understanding of transport properties in one-dimensional quantum lattice systems in the past decade, with Bethe-ansatz integrable models and novel simulation methods playing important roles. The discovery of quasilocal conserved quantities provides insight into the origins of finite-temperature transport behavior, while state-of-the-art theoretical methods, including matrix-product-state-based simulation and generalized hydrodynamics, are discussed. The close connection between theoretical models and recent experiments, particularly in the context of quantum magnets and ultracold quantum gases in optical lattices, is also highlighted.
REVIEWS OF MODERN PHYSICS
(2021)
Article
Physics, Particles & Fields
Ananda Roy, Dirk Schuricht, Johannes Hauschild, Frank Pollmann, Hubert Saleur
Summary: Analog quantum simulation using a one-dimensional quantum electronic circuit built from Josephson junctions has been investigated numerically for the quantum sine-Gordon (qSG) model. The analysis was done using density matrix renormalization group technique and compared with Bethe ansatz computations. The study shows that the quantum circuit model is less susceptible to scaling corrections compared to the XYZ chain.
Article
Mechanics
Jurriaan Wouters, Aris Giotis, Ross Kang, Dirk Schuricht, Lars Fritz
Summary: This study investigates the connection between Ramsey's theorem and a statistical physics problem. A classical Hamiltonian is designed to establish lower bounds on Ramsey numbers. Monte Carlo methods are used to obtain consistent results, and the limitations and potential extensions of the approach are discussed.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Physics, Multidisciplinary
Roman Rausch, Matthias Peschke, Cassian Plorin, Christoph Karrasch
Summary: We investigate the ground-state properties of the isotropic, antiferromagnetic Heisenberg model on the sodalite cage geometry. Our findings exhibit distinct behavior from known spherical molecules and highlight the challenges in methodology and the magnetic behavior under the presence of a finite magnetic field.
Article
Physics, Multidisciplinary
Christian J. Eckhardt, Giacomo Passetti, Moustafa Othman, Christoph Karrasch, Fabio Cavaliere, Michael A. Sentef, Dante M. Kennes
Summary: Recent experimental advances have allowed the manipulation of quantum matter using the quantum nature of light. However, there is a lack of exactly solvable models in the solid-state quantum materials context. In this study, a solvable model coupling a tight-binding chain to a single cavity mode is presented, and important properties of the system are revealed.
COMMUNICATIONS PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
G. Camacho, J. Vahedi, D. Schuricht, C. Karrasch
Summary: In this study, we investigate the effects of disorder in a one-dimensional model of Z3 Fock parafermions. We employ exact diagonalization to determine level statistics, participation ratios, and the dynamics of domain walls. This allows us to identify ergodic and finite-size localized phases. To distinguish Anderson from many-body localization, we calculate the time evolution of the entanglement entropy in random initial states using tensor networks.
Article
Physics, Multidisciplinary
Jurriaan Wouters, Fabian Hassler, Hosho Katsura, Dirk Schuricht
Summary: We study the phase diagram of an extended parafermion chain and show its equivalence to the non-chiral Z3 axial next-nearest neighbour Potts model. We discuss a possible experimental realization and find multiple gapped phases and a gapless phase.
SCIPOST PHYSICS CORE
(2022)
Article
Physics, Multidisciplinary
Jurriaan Wouters, Hosho Katsura, Dirk Schuricht
Summary: By utilizing Witten's conjugation argument, frustration-free systems and their exact ground states can be derived from known results in spin chains, focusing particularly on Z(p)-symmetric models. This approach allows for a unified framework in treating various frustration-free models, including those recently derived by Iemini et al. and Mahyaeh and Ardonne. Additionally, several other frustration-free models and their exact ground states, such as Z(4)- and Z(6)-symmetric generalisations of the ANNNI chain, can be derived using this method.
SCIPOST PHYSICS CORE
(2021)
Article
Materials Science, Multidisciplinary
Dion M. F. Hartmann, Jurriaan J. Wouters, Dirk Schuricht, Rembert A. Duine, Akashdeep Kamra
Summary: Recent advancements in understanding ordered magnets have led to quantification of entanglement content as an intensive property, with entanglement entropy scaling with volume in bipartite ordered antiferromagnets. Analytic results show dimensionality-dependent constant, validated against numerical analysis of a 1D system. This evaluation provides useful shortcuts for obtaining central-cut entanglement entropy in 1D systems and area law in higher-dimensional magnets.
Article
Materials Science, Multidisciplinary
C. Kloeckner, D. M. Kennes, C. Karrasch
Article
Materials Science, Multidisciplinary
Sonja Fischer, Christoph Karrasch, Dirk Schuricht, Lars Fritz
