1.1k citations · 6.2k across the 116 of their papers we have counts for
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Quantum vs Classical Thermal Transport at Low Temperatures
Zhixing Zou, Jiangbin Gong, Jiao Wang +2
This work aims to understand how quantum mechanics affects heat transport at low temperatures. In the classical setting, by considering a simple paradigmatic model, our simulations…
Rectification of heat current in Corbino geometry
Zhixing Zou, Giulio Casati, Giuliano Benenti +1
We prove analytically the ballistic thermal rectification effect (BTRE) in the Corbino disk characterized by an annular shape. We derive the thermal rectification efficiency (RE) a…
Autonomous Circular Heat Engine
Giuliano Benenti, Giulio Casati, Fabio Marchesoni +1
A dynamical model of a highly efficient heat engine is proposed, where an applied temperature difference maintains the motion of particles around the circuit consisting of two asym…
Classical physics and blackbody radiation
Jiao Wang, Giulio Casati, Giuliano Benenti
We investigate the properties of the blackbody spectrum by direct numerical solution of the classical equations of motion of a one-dimensional model that contains the essential gen…
From ETH to algebraic relaxation of OTOCs in systems with conserved quantities
Vinitha Balachandran, Giuliano Benenti, Giulio Casati +1
The relaxation of out-of-time-ordered correlators (OTOCs) has been studied as a mean to characterize the scrambling properties of a quantum system. We show that the presence of loc…
Power-efficiency-fluctuations trade-off in steady-state heat engines: The role of interactions
Giuliano Benenti, Giulio Casati, Jiao Wang
We consider the quality factor Q, which quantifies the trade-off between power, efficiency, and fluctuations in steady-state heat engines modeled by dynamical systems. We show that…
Inverse Currents in Hamiltonian Coupled Transport
Jiao Wang, Giulio Casati, Giuliano Benenti
The occurrence of an inverse current, where the sign of the induced current is opposite to the applied force, is a highly counterintuitive phenomenon. We show that inverse currents…
Onsager symmetry for systems with broken time-reversal symmetry
Rongxiang Luo, Giuliano Benenti, Giulio Casati +1
We provide numerical evidence that the Onsager symmetry remains valid for systems subject to a spatially dependent magnetic field, in spite of the broken time-reversal symmetry. In…
Heat current rectification in segmented XXZ chains
Vinitha Balachandran, Giuliano Benenti, Emmanuel Pereira +2
We study the rectification of heat current in an XXZ chain segmented in two parts. We model the effect of the environment with Lindblad heat baths. We show that, in our system, rec…
An efficient thermal diode with ballistic spacer
Shunda Chen, Davide Donadio, Giuliano Benenti +1
Thermal rectification is of importance not only for fundamental physics, but also for potential applications in thermal manipulations and thermal management. However, thermal recti…
Thermodynamic bound on heat to power conversion
Rongxiang Luo, Giuliano Benenti, Giulio Casati +1
In systems described by the scattering theory, there is an upper bound, lower than Carnot, on the efficiency of steady-state heat to work conversion at a given output power. We sho…
Perfect diode in quantum spin chains
Vinitha Balachandran, Giuliano Benenti, Emmanuel Pereira +2
We study the rectification of spin current in chains segmented in two parts, each with a different anisotropy parameter. Using exact diagonalization and a matrix product stat…
One-Dimensional Self-Organization and Nonequilibrium Phase Transition in a Hamiltonian System
Jiao Wang, Giulio Casati
Self-organization and nonequilibrium phase transitions are well known to occur in two- and three- dimensional dissipative systems. Here, instead, we provide numerical evidence that…
Minimal motor for powering particle motion from spin imbalance
Ulf Bissbort, Colin Teo, Chu Guo +3
We introduce a minimalistic quantum motor for coupled energy and particle transport. The system is composed of two spins, each coupled to a different bath and to a particle which c…
From thermal rectifiers to thermoelectric devices
Giuliano Benenti, Giulio Casati, Carlos Mejia-Monasterio +1
We discuss thermal rectification and thermoelectric energy conversion from the perspective of nonequilibrium statistical mechanics and dynamical systems theory. After preliminary c…
Ingredients for an efficient thermal diode
Shunda Chen, Emmanuel Pereira, Giulio Casati
We provide convincing empirical evidence that long range interactions strongly enhance the rectification effect which takes place in mass graded systems. Even more importantly the…
Thermoelectricity of interacting particles: A numerical approach
Shunda Chen, Jiao Wang, Giulio Casati +1
A method for computing the thermopower in interacting systems is proposed. This approach, which relies on Monte Carlo simulations, is illustrated first for a diatomic chain of hard…
Non-integrability and the Fourier heat conduction law
Shunda Chen, Jiao Wang, Giulio Casati +1
We study in momentum-conserving systems, how nonintegrable dynamics may affect thermal transport properties. As illustrating examples, two one-dimensional (1D) diatomic chains, rep…
Thermoelectric efficiency in momentum-conserving systems
Giuliano Benenti, Giulio Casati, Carlos Mejia-Monasterio
We show that for a two-dimensional gas of elastically interacting particles the thermoelectric efficiency reaches the Carnot efficiency in the thermodynamic limit. Numerical simula…
Fundamental aspects of steady state heat to work conversion
Giuliano Benenti, Giulio Casati, Tomaz Prosen +1
We review theoretical approaches to analyzing efficiency of steady state heat to work conversion which is crucial in the timely problem of optimizing efficiency of small-scale heat…
Conservation Laws and Thermodynamic Efficiencies
Giuliano Benenti, Giulio Casati, Jiao Wang
We show that generic systems with a single relevant conserved quantity reach the Carnot efficiency in the thermodynamic limit. Such a general result is illustrated by means of a di…
Thermal Rectification in Graded Materials
Jiao Wang, Emmanuel Pereira, Giulio Casati
In order to identify the basic conditions for thermal rectification we investigate a simple model with non-uniform, graded mass distribution. The existence of thermal rectification…
Thermopower with broken time-reversal symmetry
Keiji Saito, Giuliano Benenti, Giulio Casati +1
We show that when non-unitary noise effects are taken into account the thermopower is in general asymmetric under magnetic field reversal, even for non-interacting systems. Our fin…
Thermodynamic Bounds on Efficiency for Systems with Broken Time-reversal Symmetry
Giuliano Benenti, Keiji Saito, Giulio Casati
We show that for systems with broken time-reversal symmetry the maximum efficiency and the efficiency at maximum power are both determined by two parameters: a "figure of merit" an…