425 citations · 1.3k across the 24 of their papers we have counts for
24 papers
Random-matrix and transport frequencies in eigenstate spectral functions
Kadir Çeven, Rohit Patil, Marcos Rigol +1
The fact that generic isolated many-body quantum systems thermalize is understood using the eigenstate thermalization hypothesis (ETH). In recent years, there has been much interes…
Graph-theory measures capture weak ergodicity breaking on large quantum systems
Heiko Georg Menzler, Rafał Świętek, Mari Carmen Bañuls +1
We study the onset of weak ergodicity violations in closed quantum many-body systems and focus on cases in which they occur through a transition that is controlled by a model param…
Breakdown of bosonic Thouless pump due to interaction in a quasiperiodic lattice
Suman Mondal, Emmanuel Gottlob, Fabian Heidrich-Meisner +1
We investigate the effect of inter-particle interaction on the quantized Thouless pump in the bosonic quasiperiodic Aubry-Andr{é} model and find that the quantization of the pumped…
Hybrid quantum-classical matrix-product state and Lanczos methods for electron-phonon systems with strong electronic correlations: Application to disordered systems coupled to Einstein phonons
Heiko Georg Menzler, Suman Mondal, Fabian Heidrich-Meisner
We present two quantum-classical hybrid methods for simulating the time-dependence of electron-phonon systems that treat electronic correlations numerically exactly and optical-pho…
Charge carrier relaxation dynamics in the one-dimensional Kondo lattice model
Arturo Perez-Romero, Mica Schwarm, Fabian Heidrich-Meisner
A generic question in the field of ultrafast dynamics is concerned with the relaxation dynamics and the subsequent thermalization of optically excited charge carriers. Among severa…
Hierarchy of timescales in a disordered spin- XX ladder
Kadir Çeven, Lukas Peinemann, Fabian Heidrich-Meisner
Understanding the timescales associated with relaxation to equilibrium in closed quantum many-body systems is one of the central focuses in the study of their non-equilibrium dynam…
Graph theory and tunable slow dynamics in quantum East Hamiltonians
Heiko Georg Menzler, Mari Carmen Bañuls, Fabian Heidrich-Meisner
We show how graph theory concepts can provide an insight into the origin of slow dynamics in systems with kinetic constraints. In particular, we observe that slow dynamics is relat…
Effect of disorder on topological charge pumping in the Rice-Mele model
A. L. C. Hayward, E. Bertok, U. Schneider +1
Recent experiments with ultracold quantum gases have successfully realized integer-quantized topological charge pumping in optical lattices. Motivated by this progress, we study th…
Topological phases in the Fermi-Hofstadter-Hubbard model on hybrid-space ladders
Leo Stenzel, Andrew L. C. Hayward, Ulrich Schollwöck +1
In recent experiments with ultracold atoms, both two-dimensional (2d) Chern insulators and one-dimensional (1d) topological charge pumps have been realized. Without interactions, b…
Finite-temperature transport in one-dimensional quantum lattice models
B. Bertini, F. Heidrich-Meisner, C. Karrasch +3
The last decade has witnessed an impressive progress in the theoretical understanding of transport properties of clean, one-dimensional quantum lattice systems. Many physically rel…
Proposal for measuring the finite-temperature Drude weight of integrable systems
C. Karrasch, T. Prosen, F. Heidrich-Meisner
Integrable models such as the spin-1/2 Heisenberg chain, the Lieb-Liniger or the one-dimensional Hubbard model are known to avoid thermalization, which was also demonstrated in sev…
Unveiling hidden structure of many-body wavefunctions of integrable systems via sudden expansion experiments
Zhongtao Mei, L. Vidmar, F. Heidrich-Meisner +1
In the theory of Bethe-ansatz integrable quantum systems, rapidities play an important role as they are used to specify many-body states, apart from phases. The physical interpreta…
Finite-temperature charge transport in the one-dimensional Hubbard model
F. Jin, R. Steinigeweg, F. Heidrich-Meisner +2
We study the charge conductivity of the one-dimensional repulsive Hubbard model at finite temperature using the method of dynamical quantum typicality, focusing at half filling. Th…
Real-time decay of a highly excited charge carrier in the one-dimensional Holstein model
F. Dorfner, L. Vidmar, C. Brockt +2
We study the real-time dynamics of a highly excited charge carrier coupled to quantum phonons via a Holstein-type electron-phonon coupling. This is a prototypical example for the n…
Vortex and Meissner phases of strongly-interacting bosons on a two-leg ladder
M. Piraud, F. Heidrich-Meisner, I. P. McCulloch +3
We establish the phase diagram of the strongly-interacting Bose-Hubbard model defined on a two-leg ladder geometry in the presence of a homogeneous flux. Our work is motivated by a…
Decoherence of an entangled state of a strongly-correlated double quantum dot structure through tunneling processes
C. A. Büsser, I. de Vega, F. Heidrich-Meisner
We consider two quantum dots described by the Anderson-impurity model with one electron per dot. The goal of our work is to study the decay of a maximally entangled state between t…
Scaling of diffusion constants in the spin-1/2 XX ladder
R. Steinigeweg, F. Heidrich-Meisner, J. Gemmer +2
We study the dynamics of spin currents in the XX spin-1/2 ladder at finite temperature. Within the framework of linear response theory, we numerically calculate autocorrelation fun…
The Drude weight of the spin-1/2 XXZ chain: density matrix renormalization group versus exact diagonalization
C. Karrasch, J. Hauschild, S. Langer +1
We revisit the problem of the spin Drude weight D of the integrable spin-1/2 XXZ chain using two complementrary approaches, exact diagonalization (ED) and the time-dependent densit…
Frustrated spin chains in strong magnetic field: dilute two-component Bose gas regime
A. K. Kolezhuk, F. Heidrich-Meisner, S. Greschner +1
We study the ground state of frustrated spin-S chains in a strong magnetic field in the immediate vicinity of saturation. In strongly frustrated chains, the magnon dispersion has t…
Resonances in a dilute gas of magnons and metamagnetism of isotropic frustrated ferromagnetic spin chains
M. Arlego, F. Heidrich-Meisner, A. Honecker +2
We show that spin-S chains with SU(2)-symmetric, ferromagnetic nearest-neighbor and frustrating antiferromagnetic next-nearest-neighbor exchange interactions exhibit metamagnetic b…
Field-dependent spin and heat conductivities of dimerized spin-1/2 chains
S. Langer, R. Darradi, F. Heidrich-Meisner +1
We study the spin and heat conductivity of dimerized spin-1/2 chains in homogeneous magnetic fields at finite temperatures. At zero temperature, the model undergoes two field-induc…
Transport in dimerized and frustrated spin systems
F. Heidrich-Meisner, A. Honecker, D. C. Cabra +1
We analyze the Drude weight for both spin and thermal transport of one-dimensional spin-1/2 systems by means of exact diagonalization at finite temperatures. While the Drude weight…
Thermal conductivity of anisotropic and frustrated spin-1/2 chains
F. Heidrich-Meisner, A. Honecker, D. C. Cabra +1
We analyze the thermal conductivity of anisotropic and frustrated spin-1/2 chains using analytical and numerical techniques. This includes mean-field theory based on the Jordan-Wig…
Magnon Heat Transport in (Sr,La)_14Cu_24O_41
C. Hess, C. Baumannn, U. Ammerahl +4
We have measured the thermal heat conductivity kappa of the compounds Sr_14Cu_24O_41 and Ca_9La_5Cu_24O_41 containing doped and undoped spin ladders, respectively. We find a huge a…