246 citations · 993 across the 28 of their papers we have counts for
28 papers
The fate of the Kondo cloud in a superconductor
Cătălin Paşcu Moca, Ireneusz Weymann, Miklós Antal Werner +1
Magnetic impurities embedded in a metal are screened by the Kondo effect, signaled by the formation of an extended correlation cloud, the so-called Kondo or screening cloud. In a s…
Signatures of bilayer Wigner crystals in a transition metal dichalcogenide heterostructure
You Zhou, Jiho Sung, Elise Brutschea +12
A Wigner crystal, a regular electron lattice arising from strong correlation effects, is one of the earliest predicted collective electronic states. This many-body state exhibits q…
Quantum Coulomb glass on the Bethe lattice
Izabella Lovas, Annamária Kiss, Cătălin Paşcu Moca +1
We study the Coulomb glass emerging from the interplay of strong interactions and disorder in a model of spinless fermions on the Bethe lattice. In the infinite coordination number…
Quantum Quench and Charge Oscillations in the SU(3) Hubbard Model: a Test of Time Evolving Block Decimation with general non-Abelian Symmetries
Miklós Antal Werner, Cătălin Paşcu Moca, Örs Legeza +1
We introduce the notion of non-Abelian tensors, and use them to construct a general non-Abelian time evolving block decimation (NA-TEBD) scheme that uses an arbitrary number of Abe…
Vaporization dynamics of a dissipative quantum liquid
Ádám Bácsi, Catalin Pascu Moca, Gergely Zaránd +1
We investigate the stability of a Luttinger liquid, upon suddenly coupling it to a dissipative environment. Within the Lindblad equation, the environment couples to local currents…
Magnetic degeneracy points in interacting two-spin systems: geometrical patterns, topological charge distributions, and their stability
György Frank, Zoltán Scherübl, Szabolcs Csonka +2
Spectral degeneracies of quantum magnets are often described as diabolical points or magnetic Weyl points, which carry topological charge. Here, we study a simple, yet experimental…
Spin fluctuations after quantum quenches in the S=1 Haldane chain: numerical validation of the semi-semiclassical theory
Miklós Antal Werner, Cătălin Paşcu Moca, Örs Legeza +2
We study quantum quenches in the Heisenberg spin chain and show that the dynamics can be described by the recently developed semi-semiclassical method based on particles prop…
Observation of spin-orbit coupling induced Weyl points and topologically protected Kondo effect in a two-electron double quantum dot
Zoltán Scherübl, András Pályi, György Frank +8
Recent years have brought an explosion of activities in the research of topological aspects of condensed-matter systems. Topologically non-trivial phases of matter are typically ac…
Exploring the Kondo model in and out of equilibrium with alkaline-earth atoms
Márton Kanász-Nagy, Yuto Ashida, Tao Shi +6
We propose a scheme to realize the Kondo model with tunable anisotropy using alkaline-earth atoms in an optical lattice. The new feature of our setup is Floquet engineering of inte…
Semiclassical theory of front propagation and front equilibration following an inhomogeneous quantum quench
Márton Kormos, Catalin Pascu Moca, Gergely Zaránd
We use a semiclassical approach to study out of equilibrium dynamics and transport in quantum systems with massive quasiparticle excitations having internal quantum numbers. In the…
Entanglement and entropy production in coupled single-mode Bose-Einstein condensates
Izabella Lovas, József Fortágh, Eugene Demler +1
We investigate the time evolution of the entanglement entropy of coupled single-mode Bose-Einstein condensates in a double well potential at temperature, by combining numeric…
Full counting statistics of time of flight images
Izabella Lovas, Balázs Dóra, Eugene Demler +1
Inspired by recent advances in cold atomic systems and non-equilibrium physics, we introduce a novel characterization scheme, the time of flight full counting statistics. We benchm…
Quantum fluctuation induced time of flight correlations of an interacting trapped Bose gas
Izabella Lovas, Balázs Dóra, Eugene Demler +1
We investigate numerically the momentum correlations in a two dimensional, harmonically trapped interacting Bose system at temperature, by using a particle number preserving…
Magnetic noise spectroscopy as a probe of local electronic correlations in two-dimensional systems
Kartiek Agarwal, Richard Schmidt, Bertrand Halperin +4
We develop the theoretical framework for calculating magnetic noise from conducting two-dimensional (2D) materials. We describe how local measurements of this noise can directly pr…
Floquet topological phases coupled to environments and the induced photocurrent
Szabolcs Vajna, Baruch Horovitz, Balázs Dóra +1
We consider the fate of a helical edge state of a spin Hall insulator and its topological transition in presence of a circularly polarized light when coupled to various forms of en…
Anderson Localization and Quantum Hall Effect: Numerical Observation of Two Parameter Scaling
Miklós Antal Werner, Arne Brataas, Felix von Oppen +1
A two dimensional disordered system of non-interacting fermions in a homogeneous magnetic field is investigated numerically. By introducing a new magnetic gauge, we explore the ren…
Nonperturbative phase diagram of interacting disordered Majorana nanowires
Francois Crépin, Gergely Zaránd, Pascal Simon
We develop a Gaussian variational approach in replica space to investigate the phase diagram of a one-dimensional interacting disordered topological superconducting wire in the str…
Phase diagram and excitations of a Shiba molecule
N. Y. Yao, C. P. Moca, I. Weymann +4
We analyze the phase diagram associated with a pair of magnetic impurities trapped in a superconducting host. The natural interplay between Kondo screening, superconductivity and e…
Confinement induced interlayer molecules: a route to strong interatomic interactions
Márton Kanász-Nagy, Eugene A. Demler, Gergely Zaránd
We study theoretically the interaction between two species of ultracold atoms confined into two layers of a finite separation, and demonstrate the existence of new types of confine…
Observation of the SU(4) Kondo state in a double quantum dot
A. J. Keller, S. Amasha, I. Weymann +6
Central to condensed matter physics are quantum impurity models, which describe how a local degree of freedom interacts with a continuum. Surprisingly, these models are often unive…
Global superfluid phase diagram of three component fermions with magnetic ordering
M. Kanasz-Nagy, G. Zarand
We investigate a three component fermion mixture in the presence of weak attractive interactions. We use a combination of the equation of motion and the Gaussian variational mean-f…
Generalized Gibbs ensemble and work statistics of a quenched Luttinger liquid
Balázs Dóra, Ádám Bácsi, Gergely Zaránd
We analyze the probability distribution function (PDF) of work done on a Luttinger liquid for an arbitrary finite duration interaction quench and show that it can be described in t…
Quantum Noise Measurement of a Carbon Nanotube Quantum Dot in the Kondo Regime
Julien Basset, Alik Kasumov, Pascu Moca +4
The current emission noise of a carbon nanotube quantum dot in the Kondo regime is measured at frequencies of the order or higher than the frequency associated with the Kondo e…
Fluctuation-exchange approximation theory of the non-equilibrium singlet-triplet transition
Bertalan Horváth, Bence Lazarovits, Gergely Zaránd
As a continuation of a previous work [B. Horváth et al., Phys. Rev. B {\bf 82}, 165129 (2010)], here we extend the so-called Fluctuation Exchange Approximation (FLEX) to study the…