226 citations · 652 across the 21 of their papers we have counts for
22 papers
Ideal gas of active particles in a box
Siran Li, Ralf Eichhorn, Lennart Dabelow
Extending a fundamental concept of thermodynamics to the nonequilibrium realm of active matter, we derive an ideal gas law for a suspension of noninteracting active particles confi…
Basis dependence of eigenstate thermalization
Lennart Dabelow, Christian Eidecker-Dunkel, Peter Reimann
Eigenstate thermalization refers to the property that an energy eigenstate of a many-body system is indistinguishable from a thermal equilibrium ensemble at the same energy as far…
Temperature and conditions for thermalization after canonical quenches
Lennart Dabelow
We consider quenches of a quantum system that is prepared in a canonical equilibrium state of one Hamiltonian and then evolves unitarily in time under a different Hamiltonian. Tech…
Random-matrix approach to time-dependent forcing in many-body quantum systems
Lennart Dabelow, Peter Reimann
Changing some of its parameters over time is a paradigmatic way of driving an otherwise isolated many-body quantum system out of equilibrium, and a vital ingredient for building qu…
Stalled response near thermal equilibrium in periodically driven systems
Lennart Dabelow, Peter Reimann
The question of how systems respond to perturbations is ubiquitous in physics. Predicting this response for large classes of systems becomes particularly challenging if many degree…
Symbolic Equation Solving via Reinforcement Learning
Lennart Dabelow, Masahito Ueda
Machine-learning methods are gradually being adopted in a wide variety of social, economic, and scientific contexts, yet they are notorious for struggling with exact mathematics. A…
Thermodynamic nature of irreversibility in active matter
Lennart Dabelow, Ralf Eichhorn
Active matter describes systems whose constituents convert energy from their surroundings into directed motion, such as bacteria or catalytic colloids. We establish a thermodynamic…
Three Learning Stages and Accuracy-Efficiency Tradeoff of Restricted Boltzmann Machines
Lennart Dabelow, Masahito Ueda
Restricted Boltzmann Machines (RBMs) offer a versatile architecture for unsupervised machine learning that can in principle approximate any target probability distribution with arb…
Thermalization of locally perturbed many-body quantum systems
Lennart Dabelow, Patrick Vorndamme, Peter Reimann
Deriving conditions under which a macroscopic system thermalizes directly from the underlying quantum many-body dynamics of its microscopic constituents is a long-standing challeng…
Refining Deutsch's approach to thermalization
Peter Reimann, Lennart Dabelow
The ground breaking investigation by Deutsch [Phys. Rev. A 43, 2046 (1991)] of how closed many-body quantum systems approach thermal equilibrium is revisited. It is shown how to ca…
Typical relaxation of perturbed quantum many-body systems
Lennart Dabelow, Peter Reimann
We substantially extend our relaxation theory for perturbed many-body quantum systems from [Phys. Rev. Lett. 124, 120602 (2020)] by establishing an analytical prediction for the ti…
How irreversible are steady-state trajectories of a trapped active particle?
Lennart Dabelow, Stefano Bo, Ralf Eichhorn
The defining feature of active particles is that they constantly propel themselves by locally converting chemical energy into directed motion. This active self-propulsion prevents…
Irreversibility in active matter: General framework for active Ornstein-Uhlenbeck particles
Lennart Dabelow, Ralf Eichhorn
Active matter systems are driven out of equilibrium by conversion of energy into directed motion locally on the level of the individual constituents. In the spirit of a minimal des…
Modification of quantum many-body relaxation by perturbations exhibiting a banded matrix structure
Lennart Dabelow, Patrick Vorndamme, Peter Reimann
We investigate how the observable relaxation behavior of an isolated quantum many-body system is modified in response to weak-to-moderate perturbations within a nonperturbative typ…
Persistent many-body quantum echoes
Lennart Dabelow, Peter Reimann
We consider quantum many-body systems evolving under a time-independent Hamiltonian from a nonequilibrium initial state at time towards a close-to-equilibrium state at ti…
Predicting Imperfect Echo Dynamics in Many-Body Quantum Systems
Lennart Dabelow, Peter Reimann
Echo protocols provide a means to investigate the arrow of time in macroscopic processes. Starting from a nonequilibrium state, the many-body quantum system under study is evolved…
Typicality of Prethermalization
Peter Reimann, Lennart Dabelow
Prethermalization refers to the remarkable relaxation behavior which an integrable many-body system in the presence of a weak integrability-breaking perturbation may exhibit: After…
Relaxation theory for perturbed many-body quantum systems versus numerics and experiment
Lennart Dabelow, Peter Reimann
An analytical prediction is established of how an isolated many-body quantum system relaxes towards its thermal long-time limit under the action of a time-independent perturbation,…
Momentum dependence of quantum critical Dirac systems
Lennart Dabelow, Holger Gies, Benjamin Knorr
We analyze fermionic criticality in relativistic 2+1 dimensional fermion systems using the functional renormalization group (FRG), concentrating on the Gross-Neveu (chiral Ising) a…
Efficiency fluctuations in microscopic machines
Sreekanth K Manikandan, Lennart Dabelow, Ralf Eichhorn +1
Nanoscale machines are strongly influenced by thermal fluctuations, contrary to their macroscopic counterparts. As a consequence, even the efficiency of such microscopic machines b…
Irreversibility in active matter systems: Fluctuation theorem and mutual information
Lennart Dabelow, Stefano Bo, Ralf Eichhorn
We consider a Brownian particle which, in addition to being in contact with a thermal bath, is driven by fluctuating forces which stem from active processes in the system, such as…
Experimental Realization of a Minimal Microscopic Heat Engine
Aykut Argun, Jalpa Soni, Lennart Dabelow +4
Microscopic heat engines are microscale systems that convert energy flows between heat reservoirs into work or systematic motion. We have experimentally realized a minimal microsco…