Article
Chemistry, Physical
Marius Bause, Tristan Bereau
Summary: The article introduces a Maximum Caliber method for dynamical reweighting of complex systems, mapping trajectories to a Markovian description and reducing configurational space dimensionality to collective variables. This approach expands dynamical reweighting to larger systems and across a wide range of driving forces.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
Takuya Kamijima, Sosuke Ito, Andreas Dechant, Takahiro Sagawa
Summary: This article investigates the driving forces that push a system out of equilibrium, such as time-dependent and nonconservative forces. The dissipation of the system can then be decomposed into two nonnegative parts, known as excess and housekeeping entropy productions. Thermodynamic uncertainty relations are derived for these entropy components, which can serve as useful tools for estimating their individual contributions. A decomposition of an arbitrary current into housekeeping and excess parts is also introduced, providing lower bounds for their respective entropy productions. Additionally, a geometric interpretation of the decomposition is presented, revealing that the uncertainties of the two components are not independent and must obey a joint uncertainty relation, resulting in a tighter bound on the total entropy production. The findings are applied to illustrate the physical interpretation of current components and how to estimate entropy production.
Article
Physics, Mathematical
Xinyu Cheng, Hyunju Kwon, Dong Li
Summary: We demonstrate the existence of nontrivial stationary weak solutions to the surface quasi-geostrophic equations on the two dimensional periodic torus.
COMMUNICATIONS IN MATHEMATICAL PHYSICS
(2021)
Article
Quantum Science & Technology
Alberto Rolandi, Marti Perarnau-Llobet
Summary: This study develops a finite-time version of Landauer's principle, which optimizes erasure processes by considering the fermion's energy and system-bath coupling and takes into account strong coupling effects. The results suggest the emergence of the Planckian time as the shortest timescale for information erasure.
Article
Mechanics
Yudong Zhang, Xiao Wu, Bangbang Nie, Aiguo Xu, Feng Chen, Ronghan Wei
Summary: In micro- and nanoscale channels, flow characteristics exhibit discontinuity due to the small scale and rarefaction. The conventional continuum-based models are inadequate for describing such flow behavior, therefore adopting kinetic models based on statistical mechanics becomes necessary. This paper presents a novel discrete Boltzmann model specifically tailored for non-equilibrium flows at the micro-nanoscale and demonstrates its effectiveness through numerical simulations.
Article
Chemistry, Multidisciplinary
Xiaobo Li, Mengmeng Meng, Shaoyun Huang, Congwei Tan, Congcong Zhang, Hailin Peng, H. Q. Xu
Summary: We experimentally studied the quantum transport in a topological insulator Bi2Te3 nanoplate and found that the carrier density in the nanoplate decreases while the mobility increases with decreasing top-gate voltage. Low-field magnetotransport measurements showed weak anti-localization characteristics. By considering the surface-bulk coherent electron scattering, we extracted important parameters such as dephasing times, diffusion coefficients, and surface-bulk scattering times, which helped us understand the quantum transport measurements at low temperatures.
Article
Thermodynamics
Rafael de P. Soares, Paula B. Staudt
Summary: This paper presents an alternative derivation of the COSMO-SAC model and compares pair contact probabilities as well as nonrandom factors with classic models. By using these probabilities, the system internal energy can be readily calculated. The case of temperature dependent interaction energies and potential inconsistencies are discussed, and an accompanying open-source code is provided, favoring readability over efficiency.
FLUID PHASE EQUILIBRIA
(2023)
Article
Physics, Multidisciplinary
Robert Holyst, Karol Makuch, Konrad Gizynski, Anna Maciolek, Pawel J. Zuk
Summary: This paper investigates the extension of equilibrium thermodynamics to nonequilibrium systems in steady states, and whether such a description exists for the van der Waals gas in a heat flow. The study shows that the internal energy in nonequilibrium states has the same form as in equilibrium thermodynamics, and the steady-state fundamental equation leads to the thermodynamic Maxwell relations for measurable properties.
Article
Chemistry, Physical
Wei Wu, Jin Wang
Summary: In this study, we establish the nonequilibrium equation of state for open Hamiltonian systems in contact with multiple heat baths in the stochastic thermodynamics framework. The nonequilibrium equation of state consists of an equilibrium part and a nonequilibrium correction part, which depend on the average temperature and temperature differences of the heat baths, respectively. Furthermore, the nonequilibrium equation of state also depends on the friction coefficients arising from system-bath interactions, suggesting a relational condition between the system and the heat baths.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Mathematics, Applied
N. Nikishina, E. Rybalova, G. Strelkova, T. Vadivasova
Summary: This study investigates the spatio-temporal dynamics of networks of chaotic discrete-time systems in the presence of colored Gaussian noise-modulated nonlocal coupling. The results show that the dynamics and spatio-temporal structures of the network can be controlled by varying the intensity and spectral characteristics of the coupling noise.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2024)
Article
Physics, Multidisciplinary
Taras Hutak, Gleb Skorobagatko
Summary: This study investigates the strongly correlated transport of interacting electrons through a one-dimensional tunnel contact using the Luttinger liquid model. The exact distribution functions for the probabilities of electron tunneling are derived and visualized as real-time tunneling maps. The results reveal tunneling anomalies, particularly in the case of strong short-range electron-electron interaction. The findings suggest that these anomalous electron tunneling features can be utilized for precise experimental measurements of small differences in Luttinger liquid correlation parameter values in different one-dimensional quantum-point contacts.
Article
Multidisciplinary Sciences
Ziyan Wang, Zheyang Li, Chengtai Li, Xuan Ji, Xianneng Song, Xi Yu, Lejia Wang, Wenping Hu
Summary: This study presents a generic dynamic mode of molecular devices by utilizing the transient redox state of quinone molecules through proton/water transfer. The resulting diffusion-limited proton/water transfer modulates electron transport, leading to non-steady state charge transport with features such as negative differential resistance, dynamic hysteresis, and memory-like behavior. A quantitative paradigm for studying non-steady state charge transport kinetics is developed, and the principle of the dynamic device is revealed through numerical simulation. Application of pulse stimulation shows that the dynamic device can emulate the synaptic response of neurons, suggesting potential for future nonlinear and brain-inspired devices.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Yutong Ran, Runni Zhao, Chen Meng, Nianze Shang, Shuo Sun, Kaihui Liu, Hongwei Zhu
Summary: This study explores the growth of multilayered SnSe2 nanoplates under non-steady-state conditions, revealing their distinct features and pronounced second harmonic generation. The findings shed light on the growth dynamics of 2D materials and broaden their potential applications in various fields.
Article
Physics, Applied
Nikos Iliopoulos, Ioannis Thanopulos, Vasilios Karanikolas, Emmanuel Paspalakis
Summary: We investigate the entanglement dynamics between two qubits and a graphene nanodisk using the macroscopic quantum electrodynamics method. Our findings show that as the free-space decay rate increases, the decaying Rabi oscillations in the qubit population dynamics change to complex non-Markovian dynamical population evolution. This is also reflected in the concurrence, which can reach values up to 0.5 under weak or moderate light-matter coupling conditions and transiently higher values under stronger coupling conditions. These results demonstrate the potential of graphene nanostructures for realizing high degrees of entanglement at the nanoscale, which is crucial for quantum technology applications.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Thomas Speck
Summary: Numerical computations are essential in modern quantitative sciences, with equilibrium statistical mechanics and stochastic thermodynamics providing theoretical frameworks. The development of stochastic thermodynamics for complex systems is crucial for understanding biomolecular dynamics and facing open challenges.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
M. Chavez-Cervantes, G. E. Topp, S. Aeschlimann, R. Krause, S. A. Sato, M. A. Sentef, I Gierz
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
Gernot Schaller, Julian Ablassmayer
Article
Physics, Multidisciplinary
Philipp Strasberg, Christopher W. Waechtler, Gernot Schaller
Summary: There are two paradigms for studying nanoscale engines: autonomous models and models using time-dependent control fields. While the latter offers theoretical simplifications, its practical utility has been questioned. By constructing an autonomous model, a thermodynamic cycle was implemented in a certain parameter regime, but analysis of a thermodynamic cycle for a single-electron working fluid is not justified. Further challenges remain in autonomously implementing the more studied Carnot and Otto cycles.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Applied
Michal Kloc, Kurt Meier, Kimon Hadjikyriakos, Gernot Schaller
Summary: In this study, it is demonstrated that the lower levels of a large-spin network can act as a quantum-absorption refrigerator with a cooling current scaling quadratically with the number of spins. This scaling behavior is also observed for noise and entropy production rate.
PHYSICAL REVIEW APPLIED
(2021)
Review
Physics, Multidisciplinary
Gabriel T. Landi, Dario Poletti, Gernot Schaller
Summary: Recent years have witnessed significant progress in the theoretical understanding of quantum systems driven dissipatively by coupling to different baths. This progress has been possible due to advancements in models, methods, and analysis of emerging phenomena. This review provides a comprehensive overview of these three integrated research directions. It first gives an overarching view of boundary-driven open quantum system models in both weak and strong coupling regimes. It then reviews state-of-the-art analytical and numerical methods that are exact, perturbative, and approximate. Lastly, it discusses transport properties of paradigmatic one-dimensional chains, with a focus on disordered and quasiperiodic systems, rectification and negative differential conductance, phase transitions, and provides an outlook on further research options.
REVIEWS OF MODERN PHYSICS
(2022)
Article
Physics, Applied
Dmytro Kolisnyk, Gernot Schaller
Summary: By selectively driving the transitions of a single qutrit with weakly coupled reservoirs, one of the world's smallest refrigerators can be implemented. We analyze the performance of N such fridges that are collectively coupled to the reservoirs. We observe a quantum boost, seen in a quadratic scaling of the steady-state cooling current with N. As N increases, the scaling reduces to linear due to energetically unfavorable transitions responsible for the quantum boost.
PHYSICAL REVIEW APPLIED
(2023)
Article
Physics, Multidisciplinary
N. Ahmadiniaz, M. Geller, J. Koenig, P. Kratzer, A. Lorke, G. Schaller, R. Schuetzhold
Summary: This paper investigates the potential application of the quantum Zeno effect in isolating a quantum dot from its surrounding electron reservoir, specifically focusing on the tunneling of an electron from a continuum reservoir to a discrete level in the dot. The study finds that achieving the quantum Zeno effect in this scenario can be challenging, but the required repetition rate can be lowered through certain methods. The paper also discusses the anti-Zeno effect and how measurements can accelerate or enable quantum evolution.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
G. Schaller, F. Queisser, N. Szpak, J. Koenig, R. Schuetzhold
Summary: In this study, we investigate the dissipative Fermi-Hubbard model under weak tunneling and strong repulsive interactions. We find that the Mott insulator property remains stable for cold baths at intermediate chemical potentials, and the particle number relaxes quickly towards half filling. On longer time scales, the antiferromagnetic order of the Mott-Neel ground state on bipartite lattices decays, even at zero temperature. We quantify the different relaxation time scales for zero and nonzero temperatures using waiting time distributions, which can be derived from an effective (non-Hermitian) Hamiltonian.
Article
Optics
Ronja Hotz, Gernot Schaller
Summary: For selected periodically driven open quantum systems, dynamically adapted coarse-graining time yields the best results among different coarse-graining schemes, at a high computational cost. This non-Markovian dynamics interpolates through a series of individually Markovian solutions.
Article
Materials Science, Multidisciplinary
Gabriel E. Topp, Christian J. Eckhardt, Dante M. Kennes, Michael A. Sentef, Paivi Torma
Summary: Quantum geometry plays a crucial role in the light-matter coupling of flat-band and moire materials, making strong light-matter coupling more achievable by suppressing the electronic kinetic energy. Despite the nearly vanishing band velocities and curvatures, light can still couple to flat bands through geometric contributions. The study provides fundamental principles and tools for controlling emergent electronic properties in flat-band and moire materials based on light-matter coupling.
Article
Materials Science, Multidisciplinary
Tilmann Ehrlich, Gernot Schaller
Summary: Research shows that optimal finite-sized quantum dot chains can accurately implement rectangular transmission functions, leading to violations of standard thermodynamic uncertainty relations and changes in heat engine performance.
Article
Materials Science, Multidisciplinary
C. W. Wachtler, V. M. Bastidas, G. Schaller, W. J. Munro
Article
Optics
Wassilij Kopylov, Gernot Schaller
Article
Physics, Multidisciplinary
Gabriel E. Topp, Gregor Jotzu, James W. McIver, Lede Xian, Angel Rubio, Michael A. Sentef
PHYSICAL REVIEW RESEARCH
(2019)
Article
Optics
David Gelbwaser-Klimovsky, Wassilij Kopylov, Gernot Schaller
