425 citations · 1.4k across the 17 of their papers we have counts for
18 papers
Universal correlations in the Abelian sandpile model
Qiyu Liu, Jan-Niklas Herre, Prajit Baruah +4
We numerically study the bulk correlation functions in the two-dimensional Abelian sandpile model, aiming both to compare with the predictions of logarithmic conformal field theory…
Continuous unitary transformations using tensor network representations access the full many-body localized spectrum
Qiyu Liu, Jan-Niklas Herre, Dante M. Kennes +1
We develop variational continuous unitary transformations (VCUTs), which integrate Wegner-Wilson flow equations with tensor network techniques to approximately diagonalize many-bod…
Many-body correlations in Floquet steady-states: Frequency-resolved renormalization group of the driven Anderson impurity
Jan-Niklas Herre, Christoph Karrasch, Dante M. Kennes
We introduce a functional renormalization group framework formulated directly in the Floquet steady-state that systematically incorporates frequency-dependent interaction effects.…
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…
Hubbard-to-Heisenberg crossover (and efficient computation) of Drude weights at low temperatures
C. Karrasch
We illustrate how finite-temperature charge and thermal Drude weights of one-dimensional systems can be obtained from the relaxation of initial states featuring global (left-right)…
Small quenches and thermalization
D. M. Kennes, J. C. Pommerening, J. Diekmann +2
We study the expectation values of observables and correlation functions at long times after a global quantum quench. Our focus is on metallic (`gapless') fermionic many-body model…
Approaching Many-Body Localization from Disordered Luttinger Liquids via the Functional Renormalization Group
C. Karrasch, J. E. Moore
We study the interplay of interactions and disorder in a one-dimensional fermion lattice coupled adiabatically to infinite reservoirs. We employ both the functional renormalization…
Low temperature dynamics of nonlinear Luttinger liquids
C. Karrasch, R. G. Pereira, J. Sirker
We generalize nonlinear Luttinger liquid theory to describe the dynamics of one-dimensional quantum critical systems at low temperatures. Analyzing density-matrix renormalization g…
Transport properties of the one-dimensional Hubbard model at finite temperature
C. Karrasch, D. M. Kennes, J. E. Moore
We study finite-temperature transport properties of the one-dimensional Hubbard model using the density matrix renormalization group. Our aim is two-fold: First, we compute both th…
Real-time and real-space spin- and energy dynamics in one-dimensional spin-1/2 systems induced by local quantum quenches at finite temperatures
C. Karrasch, J. E. Moore, F. Heidrich-Meisner
We study the spin- and energy dynamics in one-dimensional spin-1/2 systems induced by local quantum quenches at finite temperatures using a time-dependent density matrix renormaliz…
Dynamical phase transitions after quenches in non-integrable models
C. Karrasch, D. Schuricht
We investigate the dynamics following sudden quenches across quantum critical points belonging to different universality classes. Specifically, we use matrix product state methods…
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…
Nonequilibrium thermal transport and its relation to linear response
C. Karrasch, R. Ilan, J. E. Moore
We study the real-time dynamics of spin chains driven out of thermal equilibrium by an initial temperature gradient T_L \neq T_R using density matrix renormalization group methods.…
Luttinger liquid universality in the time evolution after an interaction quench
C. Karrasch, J. Rentrop, D. Schuricht +1
We provide strong evidence that the relaxation dynamics of one-dimensional, metallic Fermi systems resulting out of an abrupt amplitude change of the two-particle interaction has a…
A renormalization group approach to time dependent transport through correlated quantum dots
D. M. Kennes, S. G. Jakobs, C. Karrasch +1
We introduce a real time version of the functional renormalization group which allows to study correlation effects on nonequilibrium transport through quantum dots. Our method is e…
The Functional Renormalization Group for Zero-Dimensional Quantum Systems in and out of Equilibrium
C. Karrasch
We study transport properties of quantum impurity systems using the functional renormalization group. The latter is an RG-based diagrammatic tool to treat Coulomb interactions in a…
Finite-temperature linear conductance from the Matsubara Green function without analytic continuation to the real axis
C. Karrasch, V. Meden, K. Schönhammer
We illustrate how to calculate the finite-temperature linear-response conductance of quantum impurity models from the Matsubara Green function. A continued fraction expansion of th…