Article
Materials Science, Multidisciplinary
Imke Schneider, Ipsita Mandal, Polina Matveeva, Dominik Strassel, Sebastian Eggert
Summary: The asymptotic dynamical correlation functions in one-dimensional spin chains follow power laws, with corresponding exponents characterizing different bulk and boundary critical behavior. Results for the logarithmic contribution to boundary correlations in an isotropic Heisenberg chain are presented, and the logarithm exponent of λ = 1 is derived using renormalization group technique. Analytical results are confirmed by comparison with numerical quantum Monte Carlo data.
Article
Physics, Multidisciplinary
Xinghai Zhang, Matthew S. Foster
Summary: This study explores quantum quenches of helical liquids with spin-flip inelastic scattering, revealing two types of strongly nonlinear wave dynamics caused by localized hot spots formed due to scattering. The experimental results suggest potential for verification through the detection of frequency doubling from emitted terahertz radiation.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Conor Stevenson, Bernd Braunecker
Summary: It is shown that in a quantum wire with a local asymmetric scattering potential, the principal channels for charge and heat transport decouple and renormalize differently under electron interactions, with heat transport generally being more relevant. The polarization of the rectification results from quantum interference and can be tuned through external gating. Additionally, for spin-polarized or helical electrons with strong interactions, a regime can be achieved where heat transport is strongly rectified while charge rectification is weak.
Article
Multidisciplinary Sciences
Saurabh Kumar Srivastav, Ravi Kumar, Christian Spanslatt, K. Watanabe, T. Taniguchi, Alexander D. Mirlin, Yuval Gefen, Anindya Das
Summary: Determining the topological quantum numbers of edge modes is crucial for understanding fractional quantum Hall states. This study identifies the edge quantum numbers by measuring thermal Hall conductance, providing a new approach for finding the topological order of exotic non-Abelian fractional quantum Hall states.
NATURE COMMUNICATIONS
(2022)
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
Saran Vijayan, Fei Zhou
Summary: In this article, we propose a scaling relation between interactions in a gapped bulk topological matter and gapless interacting surface states. We examine the renormalization effects of gapped bulk fermions on interacting topological surface fermions, and explore various emergent phenomena on surfaces using effective interacting quantum fields implied by this relation. We find that phonon-mediated interactions on the surface are strongest when the bulk Debye frequency matches the mass gap of the topological matter.
Article
Materials Science, Multidisciplinary
Zeyu Rao, Ming Gong, Guangcan Guo
Summary: Motivated by previous studies on coupled Luttinger liquids, this research investigates the phase transition in coupled condensates using the bosonization method. The results show that the physics can be described by a generalized SG model and different approaches confirm the existence of the phase transition at a specific boundary. The physical meaning of this boundary is explained by the density-phase uncertainty principle. The relevance of the findings in the two-dimensional models is also discussed.
Article
Materials Science, Multidisciplinary
Zeyu Rao, Ming Gong, Guangcan Guo
Summary: Motivated by previous studies on coupled Luttinger liquids in split condensates, this research investigates the phase transition in coupled condensates using various methods including bosonization. The results show that the phase transition occurs between condensates with different velocities and Luttinger parameters, and can be described by a generalized SG model. The physical meaning of this boundary is explained by the density-phase uncertainty principle, and the relevance to two-dimensional models is discussed.
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
Environmental Sciences
Lina Brand-Correa, Anna Brook, Mdena Buchs, Petra Meier, Yannish Naik, Daniel W. O'Neill
Summary: This article discusses the importance of ecological economics for public and planetary health, emphasizing the need for integrating ecological economics principles with pluralistic economic thinking in academic and practical settings.
LANCET PLANETARY HEALTH
(2022)
Article
Materials Science, Multidisciplinary
Assaf Voliovich, Mark S. Rudner, Yuval Oreg, Erez Berg
Summary: In this study, we investigate competing insulating phases in nearly metallic zigzag carbon nanotubes. We find that an applied magnetic flux does not close and reopen the single-particle gap near a specific valley. By using a bosonic low-energy effective theory, we construct a phase diagram that shows several competing insulating phases that can form near the closing point of the single-particle gap. These phases are characterized by spin-resolved charge polarization densities, and can take different values due to mirror symmetry breaking. In the mirror symmetry breaking phase, adiabatic changes of the orbital magnetic flux drive charge and spin currents along the nanotube.
Article
Physics, Fluids & Plasmas
Na'im Kalantar, Bijay Kumar Agarwalla, Dvira Segal
Summary: The study demonstrates that perfectly harmonic junctions can rectify heat under asymmetric temperature gradients, leading to the temperature-gradient harmonic oscillator diode effect. This non-linear diode effect is due to the additional constraint of imposed thermal gradient at the boundaries.
Article
Materials Science, Multidisciplinary
Dennis Schubert, Jonas Richter, Fengping Jin, Kristel Michielsen, Hans De Raedt, Robin Steinigeweg
Summary: The study compares the spin and energy dynamics in quantum and classical spin models on different geometries, focusing on the autocorrelation functions of local densities at formally infinite temperature. The findings suggest that classical or semiclassical simulations can provide a meaningful strategy to analyze the dynamics of quantum many-body models, even for small spin quantum numbers far from the classical limit.
Article
Environmental Studies
Gavin Bridge, Erika Faigen
Summary: As electricity plays an increasingly important role in decarbonizing economies, the demand for electrical energy storage in the form of battery systems is growing. Two major factors driving this demand are electric vehicles and stationary energy storage. This intersection of battery production with the transport and power sectors has important implications that need to be understood. Current analyses of battery production focus primarily on the supply chain and overlook the organizational and geographical relations, as well as the critical areas of intersection with OEM manufacturing for automotive and power sectors. To address this gap, a global production network (GPN) approach is deployed to highlight the dynamics of battery manufacturing and its intersection with the automotive and power sectors. This alternative account provides insights into key areas of policy concern and contributes to the analysis of the geopolitical economy of energy system transformation.
ENERGY RESEARCH & SOCIAL SCIENCE
(2022)
Article
Physics, Multidisciplinary
Eugene B. Postnikov, Anton A. Namykin, Oxana V. Semyachkina-Glushkovskaya, Dmitry E. Postnov
Summary: The study proposes a method for quantitatively characterizing the diffusion process in the brain's parenchyma using images recorded during the spreading of a fluorescent dye. The method involves blurring images to obtain reference images and comparing them with actual recorded images to study transport coefficients.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Physics, Multidisciplinary
Giuseppe Del Vecchio Del Vecchio, Andrea De Luca, Alvise Bastianello
Summary: This article investigates the chaotic dynamics induced by a localized defect in 1D integrable systems, and studies the non-thermal transport properties using numerical simulations and solutions of the Boltzmann equation.
Article
Physics, Multidisciplinary
Giulia Piccitto, Michele Campisi, Davide Rossini
Summary: We study a four-stroke Otto engine with a quantum Ising chain as the working fluid. The thermodynamic cycle consists of sweeps of the transverse magnetic field and thermalisation strokes with reservoirs at different temperatures. The system-environment coupling is modelled using a nonlocal Lindblad master equation. We find that the engine can operate in four different modes and exhibit enhanced thermodynamic performance near the critical point.
NEW JOURNAL OF PHYSICS
(2022)
Article
Physics, Multidisciplinary
Mario Collura, Andrea De Luca, Davide Rossini, Alessio Lerose
Summary: This work investigates the impact of mesonic bound states on discrete time crystals and proposes two possible routes to domain-wall confinement. By constructing domain-wall-conserving effective Hamiltonians and analyzing the dynamics of domain walls, the study explores the effects of confinement on the order-parameter evolution. It is found that the confinement potential is effectively averaged out by the drive, leading to deconfined dynamics, and increasing the range of spin-spin interactions enhances the order-parameter lifetime exponentially.
Article
Multidisciplinary Sciences
Amos Chan, Saumya Shivam, David A. Huse, Andrea De Luca
Summary: The effect of translational invariance in space and time on many-body quantum chaotic systems is studied using random quantum circuits. It is found that there are universal scaling laws describing the system, even without knowing the microscopic details. The emergence of random matrix theory behavior is delayed by translational invariance, which introduces additional mechanisms via novel Feynman diagrams.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Saumya Shivam, Andrea De Luca, David A. Huse, Amos Chan
Summary: We demonstrate that non-Hermitian Ginibre random matrix behaviors can be observed in spatially extended many-body quantum chaotic systems. This is similar to the emergence of Hermitian random matrix behaviors in chaotic systems. By studying translational invariant models, we show that the dual spectra have nontrivial correlations, falling into the universality class of the Ginibre ensemble. This connection allows us to use the exact spectral form factor for the Ginibre ensemble to describe the spectral form factor for translational invariant many-body quantum chaotic systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Alexios Christopoulos, Pierre Le Doussal, Denis Bernard, Andrea De Luca
Summary: By using conformal field theory, we provide a universal description for the out-of-equilibrium dynamics of critical one-dimensional quantum systems perturbed by smooth noise coupled to the energy density. Contrary to the general expectation of heating, our results demonstrate the emergence of a nontrivial and universal stationary distribution with broad tails of physical quantities over the noise realizations. We validate our findings with analytical and numerical calculations for a chain of noninteracting spinless fermions.
Article
Materials Science, Multidisciplinary
Antonio D'Abbruzzo, Vincenzo Alba, Davide Rossini
Summary: In this study, we investigated the quantum information spreading in one-dimensional free-fermion systems with localized thermal baths using a nonlocal Lindblad master equation. The results showed that the singularity of the free-fermion dispersion leads to singular behavior of the steady-state mutual information as a function of system parameters. By analyzing the logarithmic scaling, a prefactor was derived, which depends on the parameters of the baths and acts as an effective central charge.
Article
Mechanics
Alessio Franchi, Davide Rossini, Ettore Vicari
Summary: In this study, we investigate the unitary dynamics of a quantum sunburst spin model. The results show that near the quantum transitions of the Ising ring, there are peculiar scaling regimes that depend on the way in which the large-size limit is taken. Additionally, the role of the nearest-neighbor coupling between the external qubits is also addressed.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Optics
Lorenzo Rosso, Leonardo Mazza, Alberto Biella
Summary: This article studies the quantum dynamics of a one-dimensional SU(3)-symmetric system of cold atoms with two-body losses. The researchers use the representation theory of SU(3), known as the eightfold way, to organize the dark states of dissipative dynamics in terms of generalized Dicke states and demonstrate how they approach dynamically in both weakly and strongly interacting and dissipative regimes. These results are significant for a wide range of alkaline-earth(-like) gas experiments, opening up possibilities for the dissipative preparation and utilization of generalized Dicke states.
Article
Physics, Fluids & Plasmas
Alessio Franchi, Davide Rossini, Ettore Vicari
Summary: In this study, we investigate the ground-state properties of a quantum sunburst model, which consists of a quantum Ising spin ring and a set of ancillary isolated qubits. We explore the large-size limit in different ways and observe different physical regimes and behaviors depending on the parameters.
Article
Physics, Fluids & Plasmas
Alessio Franchi, Davide Rossini, Ettore Vicari
Summary: In this study, we investigate the effects of symmetry-breaking defects on the continuous quantum transitions (CQTs) in homogeneous systems using renormalization-group (RG) and finite-size scaling frameworks. By analyzing the one-dimensional quantum Ising models with defects that break the global Z2 symmetry, we demonstrate the significant changes in ground-state properties in critical crossover regimes driven by these defects. The fidelity susceptibility shows a power-law divergence within the critical crossover regime, and we support the theoretical arguments with numerical results.
Article
Optics
G. Mussardo, J. Viti
Summary: This paper investigates the properties of bipartite entanglement entropy in the limit of a one-dimensional system and shows that the limit is finite. Additionally, for fermions, the limit of bipartite entanglement entropy coincides with Shannon entropy.
Article
Materials Science, Multidisciplinary
Giulia Piccitto, Angelo Russomanno, Davide Rossini
Summary: This paper investigates the dynamics of entanglement in the quantum Ising chain with dephasing dissipation using two different unravelings. The results show that the entanglement behavior differs for different unravelings of the same Lindblad equation, contradicting the predictions of a non-Hermitian Hamiltonian evolution.
Article
Materials Science, Multidisciplinary
Antonio D'Abbruzzo, Davide Rossini
Summary: In a Kitaev quantum wire of finite length weakly coupled to thermal baths, quantum interference effects can be generated when external baths are coupled to multiple lattice sites. The presence of two baths with different temperatures and/or chemical potentials can lead to steady-state particle currents described by the Landauer-Buttiker formula, with an additional anomaly factor related to p-wave pairing in the Kitaev Hamiltonian. This factor is influenced by the ground-state properties of the chain and has a finite-size equivalent to its Pfaffian topological invariant.
Article
Optics
Davide Rossini, Alexis Ghermaoui, Manel Bosch Aguilera, Remy Vatre, Raphael Bouganne, Jerome Beugnon, Fabrice Gerbier, Leonardo Mazza
Summary: This study focuses on strong two-body losses in bosonic gases trapped in one-dimensional optical lattices, utilizing the separation of timescales in a many-body quantum Zeno regime to establish a connection with the theory of time-dependent generalized Gibbs ensemble. The main result is a set of rate equations capturing the simultaneous effects of coherent evolution and two-body losses, providing an accurate description of the dynamics of a gas in a Mott insulating state. The research also discusses the potential observation of these predictions in an experiment with Yb-174 in a metastable state.
