Article
Mechanics
Jannik Ehrich
Summary: Stochastic thermodynamics allows defining heat and work for microscopic systems far from equilibrium, although a complete account of energetics may be challenging due to unresolved nonequilibrium degrees of freedom. Mapping visible dynamics onto a Markov model can produce a lower-bound estimate of entropy production, but this bound may be loose with small observable currents. Another approach involves using all observable data to uncover a hidden Markov model responsible for generating non-Markovian dynamics, resulting in a tightest possible lower bound on entropy production for masked Markovian kinetic networks. Illustration of the formalism is demonstrated with a simple example system.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2021)
Article
Mechanics
Zhiyu Cao, Jie Su, Huijun Jiang, Zhonghuai Hou
Summary: Understanding stochastic thermodynamics of the active Brownian particles system has been an important topic in recent years. However, the thermodynamic uncertainty relation (TUR) has not been fully studied for a many-body level. This study addresses this issue by introducing an effective Fokker-Planck equation in a general model of an active Brownian particles system. The effective entropy production has been found to be a reliable measure to quantify the dynamical irreversibility, capturing the interface and defects of motility induced phase separation.
Article
Physics, Fluids & Plasmas
A. Plati, A. Puglisi, A. Sarracino
Summary: We propose a thermodynamic uncertainty relation that constrains the average squared displacement of a Gaussian process with memory under the influence of unbalanced thermal baths and/or external forces. Our bound is more rigorous than previous results and is applicable at finite times. We verify our findings using experimental and numerical data from a vibrofluidized granular medium, which exhibits anomalous diffusion behavior. Our relation has the ability to discern between equilibrium and nonequilibrium dynamics in certain cases, which is challenging for Gaussian processes.
Article
Physics, Multidisciplinary
Cai Dieball, Aljaz Godec
Summary: Thermodynamic uncertainty relations (TURs) set a lower bound on the dissipation in nonequilibrium systems based on fluctuations of an observed current. In this study, we prove TURs directly from the Langevin equation, establishing their inherent property in overdamped stochastic equations of motion. We also extend TURs to currents and densities with explicit time dependence and derive a new sharpened TUR for transient dynamics by including current-density correlations. Our simple and direct proof, along with these new generalizations, provides a systematic way to determine the saturation conditions of different TURs and allows for more accurate thermodynamic inference. Finally, we outline the direct proof for Markov jump dynamics.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Alberto Rolandi, Marti Perarnau-Llobet, Harry J. D. Miller
Summary: To achieve efficient and reliable control of microscopic systems, it is important to find driving protocols that minimize both average dissipation and stochastic fluctuations in work. In rapidly driven classical and quantum systems, we have characterized these optimal protocols, showing that they involve two discontinuous jumps in the full set of control variables. These jumps can be adjusted to interpolate between processes with minimal dissipation or minimal fluctuations, and sometimes allow for simultaneous minimization. We have demonstrated our general results using rapidly driven closed quantum systems, classical bit erasure, and a dissipative Ising chain driven close to a quantum phase transition.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Particles & Fields
Haryanto M. Siahaan
Summary: This study explores the holographic picture for the Kerr-de Sitter spacetime with multiple horizons, demonstrating the existence of hidden conformal symmetry for both black hole and cosmological horizons. Scalar scattering calculations are used in the near region of each horizon to support the holographic approach, showing that the cosmological horizon entropy and associated scalar scattering can be understood through a two-dimensional conformal field theory.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Mechanics
Wolfgang Rudolf Bauer
Summary: The article discusses the inconsistencies between Boltzmann's definition of entropy and temperature and the normal notion of thermodynamics in certain scenarios. It shows that under constant negative Boltzmann temperatures, two weakly coupled geometrically frustrated systems can maintain different temperatures, and the maximum entropy is non-local. Reparametrization can transform non-local maxima into local maxima, but these temperatures cannot be assigned solely to a subsystem.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Physics, Multidisciplinary
Deepak Gupta, Carlos A. Plata
Summary: This article introduces a general framework for determining the work distribution for returning a system using a confining potential with its minimum at the restart location. The average over resetting pathways provides a robust method for accessing statistical information of observables from resetting systems. The theory is illustrated using specific computations and validated through numerical simulations, revealing non-trivial behaviors of work fluctuations.
NEW JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Physical
Zhiyu Cao, Zhonghuai Hou
Summary: Biochemical oscillations, which are crucial for regulating life processes, require energy consumption. This study investigates the challenge of estimating energy dissipation in such systems and proposes a trade-off relationship between transport efficiency and phase sensitivity. The findings highlight the importance of enhancing the sensitivity of biochemical oscillations for more accurate energy dissipation estimation.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Quantum Science & Technology
Sourabh Lahiri, Subhashish Banerjee, A. M. Jayannavar
Summary: Work fluctuation theorems are significant achievements in nonequilibrium Statistical Physics, with recent interest in quantum regimes with generalized measurements. Studies show that in the framework of generalized measurements, the original form of the Jarzynski equality is not exact, but deviations are small and can deduce an approximate effective temperature of the thermal bath. In the limit of projective measurements, the exact form of work fluctuation theorems is recovered.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Physics, Multidisciplinary
Paul W. Fontana
Summary: Maxwell's demon is a classic thought experiment that paradoxically violates the second law of thermodynamics. With advancements in nanomachinery, this experiment has become increasingly important in practical applications. Existing explanations fail to resolve this paradox, necessitating the proposal of a purely mechanical solution.
Article
Physics, Multidisciplinary
Jung-Wan Ryu, Alexandre Lazarescu, Rahul Marathe, Juzar Thingna
Summary: The study extends the standard Stuart-Landau dimer model by incorporating inertia and noise effects, and investigates its dynamics and stochastic thermodynamics. A new bistable phase emerges in the absence of noise at zero temperature, while thermodynamic observables exhibit bistability at finite temperatures.
NEW JOURNAL OF PHYSICS
(2021)
Article
Energy & Fuels
Hessam Golmohamadi
Summary: This paper proposes a stochastic model predictive control for heat pumps to supply space heating and domestic hot water consumption of residential buildings. The three-stage stochastic programming and modeling of price data are used to achieve power-to-heat flexibility.
Article
Multidisciplinary Sciences
Tushar K. Saha, Joseph N. E. Lucero, Jannik Ehrich, David A. Sivak, John Bechhoefer
Summary: This experiment showcases an information-driven engine that rectifies thermal fluctuations, leading to the storage of potential energy without external work. By optimizing the ratchet design using a simple theory, the rate of work storage and velocity of directed motion are only limited by the physical parameters of the engine.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Mechanics
Zacharias Roupas
Summary: Louis de Broglie attempted to address the problem of time in quantum theory by introducing sub-quantum degrees of freedom and relying on statistical thermodynamics. His conjecture, along with Mandelbrot's derivation, reveals a connection between energy, temperature, and the quantum time-energy uncertainty relation.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2021)
Article
Chemistry, Physical
Francesco Avanzini, Massimiliano Esposito
Summary: This study investigates the thermodynamic implications of two control mechanisms in open chemical reaction networks. It is shown that the two mechanisms can be mapped to each other, and thermodynamic theories developed for concentration control can also be applied to flux control. Furthermore, the study finds that while the two mechanisms are equivalent at steady state, flux control may lead to different behaviors.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Gianmaria Falasco, Massimiliano Esposito, Jean-Charles Delvenne
Summary: This study derives novel bounds on the nonlinear response of a system undergoing a change of probabilistic state, based on a recent geometric generalization of thermodynamic uncertainty relations. These bounds have various applications, including trade-offs between thermodynamic cost and system reliability, speed limits for non-autonomous Markov processes, and upper bounds on the nonlinear response based on the complexity of the system.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Physics, Multidisciplinary
Jorge Tabanera, Ines Luque, Samuel L. Jacob, Massimiliano Esposito, Felipe Barra, Juan M. R. Parrondo
Summary: Collisional reservoirs are important in modeling open quantum systems, where theoretical solutions in one dimension with flat interaction potentials are feasible. Approximate scattering map methods help preserve the system's symmetries and achieve thermalization effectively.
NEW JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Shuntaro Amano, Massimiliano Esposito, Elisabeth Kreidt, David A. Leigh, Emanuele Penocchio, Benjamin M. W. Roberts
Summary: The framework of information thermodynamics allows us to quantitatively relate information to other thermodynamic parameters and reveals the generation of energy and information flow in the chemical to mechanical process. This is of great significance for understanding the thermodynamic level of molecular motors and has practical implications for machine design.
Article
Physics, Multidisciplinary
Jan Meibohm, Massimiliano Esposito
Summary: We have discovered a finite-time dynamical phase transition in the thermal relaxation process, which is characterized by a cusp singularity in the probability distribution of the magnetization at a critical time. This transition is attributed to the sudden switch in dynamics, represented by a dynamical order parameter. We have developed a dynamical Landau theory that applies to various systems with scalar, parity-invariant order parameters. Our theory reveals an exact mapping between the dynamical and equilibrium phase transitions of the magnetic model near criticality, suggesting critical exponents of mean-field type. We propose that neglected interactions between nearby saddle points at the mean-field level may lead to spatiotemporal fluctuations and give rise to novel dynamical critical phenomena.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Emanuele Penocchio, Francesco Avanzini, Massimiliano Esposito
Summary: This study extends the scope of information thermodynamics to deterministic bipartite chemical reaction networks and introduces a meaningful concept of mutual information between different molecular features. By using this concept, separate second laws can be formulated for each subnetwork, and the working mechanisms of chemically driven self-assembly and light-driven bimolecular motor can be investigated.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Shesha Gopal Marehalli Srinivas, Matteo Polettini, Massimiliano Esposito, Francesco Avanzini
Summary: This paper investigates the relationship between the chemical master equation and its dual equation for stochastic chemical processes. By studying the topological properties of the chemical reaction network, it is determined whether they satisfy the law of mass-action. It is proven that only networks with zero deficiency can satisfy the law of mass-action, while other networks cannot invert the direction of their steady-state reactions by controlling the kinetic constants. Therefore, the deficiency of the network determines the non-invertibility of the chemical dynamics. Furthermore, it is shown that catalytic chemical networks do not have zero deficiency when they are driven out of equilibrium due to species exchange with the environment.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Physics, Multidisciplinary
Krzysztof Ptaszynski, Massimiliano Esposito
Summary: There is controversy about whether the coherent superposition of occupied states of two fermionic modes should be regarded as entangled, and whether the quantum correlations it possesses are accessible and usable as a resource. The superselection rule has been cited as a reason for why this entanglement cannot be accessed through local operations on individual modes. However, this study demonstrates that entanglement of a two-mode fermionic state can be utilized as a genuine quantum resource in open-system thermodynamic processes, enabling tasks that are forbidden for separable states. Quantum thermodynamics can thus provide insight into the nature of fermionic entanglement and its operational meaning.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Jorge Tabanera-Bravo, Juan M. R. Parrondo, Massimiliano Esposito, Felipe Barra
Summary: We introduce a class of quantum maps that can thermalize a system in collisional reservoirs when combined with a dephasing mechanism. These maps describe collision effects, inducing transitions obeying detailed balance and creating coherences that prevent thermalization. By combining these maps with random unitary evolution causing dephasing, we find that a low collision rate leads to thermalization in the system. This scenario is suitable for modeling equilibrium collisional reservoirs, and we provide a thorough characterization of the resulting thermalization process.
PHYSICAL REVIEW LETTERS
(2023)
Article
Quantum Science & Technology
Krzysztof Ptaszynski, Massimiliano Esposito
Summary: The entropy production in fermionic systems is mostly quantum due to the restriction on allowed measurements imposed by the parity superselection rule. In contrast, bosonic systems allow for a larger amount of classical correlations to be accessed through Gaussian measurements. This distinction suggests a quantum-to-classical transition in the microscopic formulation of entropy production.
Article
Physics, Fluids & Plasmas
Krzysztof Ptaszynski, Massimiliano Esposito
Summary: This study investigates the entropy production of an open system coupled to a reservoir initialized in a canonical state. The entropy production is found to be a sum of the mutual information between the system and the bath, as well as a measure of the displacement of the environment from equilibrium. However, when the reservoir is initialized in a microcanonical or certain pure state, the information-theoretic contributions to the entropy production depend on the initial state of the reservoir.
Article
Physics, Fluids & Plasmas
Nahuel Freitas, Massimiliano Esposito
Summary: A CMOS-based implementation of an autonomous Maxwell's demon was proposed to demonstrate its functionality at macroscopic scales. The nonautonomous version of the model was analyzed analytically, followed by a study of system-demon information flows in generic bipartite setups. It was found that the information flow is an intensive quantity and scaling the thermodynamic forces can prevent the demon from stopping above a finite scale.
Article
Physics, Multidisciplinary
Florian Vigneau, Juliette Monsel, Jorge Tabanera, Kushagra Aggarwal, Lea Bresque, Federico Fedele, Federico Cerisola, G. A. D. Briggs, Janet Anders, Juan M. R. Parrondo, Alexia Auffeves, Natalia Ares
Summary: The ultrastrong coupling between single-electron tunneling and nanomechanical motion provides exciting opportunities for exploring fundamental questions and developing new platforms for quantum technologies. We have measured and modeled this electromechanical coupling in a fully suspended carbon nanotube device and found a ratio of gm/omega m = 2.72 +/- 0.14, which is the highest among all other electromechanical platforms and well within the ultrastrong coupling regime.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Quantum Science & Technology
Samuel L. Jacob, Massimiliano Esposito, Juan M. R. Parrondo, Felipe Barra
Summary: In a collision between a moving particle and a fixed system with internal degrees of freedom, the motion of the particle can act as a work source for the joint internal system, resulting in energy changes that preserve entropy. This opens up interesting perspectives for quantum thermodynamics formulations within scattering theory.
Article
Physics, Fluids & Plasmas
Nahuel Freitas, Karel Proesmans, Massimiliano Esposito
Summary: We investigate the relationship between reliability and entropy production in a realistic model of electronic memory, and derive an explicit expression bounding the error rate of the memory. Our results go beyond the classical instanton theory and are confirmed by comparison with stochastic simulations.