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We use the general formulation of irreversible thermodynamics and study the minimally nonlinear irreversible model of heat engines operating between a time-varying hot heat source of finite size and a cold heat reservoir of infinite size.…

统计力学 · 物理学 2018-11-27 M. Ponmurugan

The theory of constructing instantaneous equilibrium (ieq) transition under arbitrary time-dependent temperature and potential variation for a Brownian particle is developed. It is shown that it is essential to consider the underdamped…

统计力学 · 物理学 2021-08-18 Yonggun Jun , Pik-Yin Lai

We investigate optimal control problems with $L^0$ constraints, which restrict the measure of the support of the controls. We prove necessary optimality conditions of Pontryagin maximum principle type. Here, a special control perturbation…

最优化与控制 · 数学 2022-08-04 Daniel Wachsmuth

Performing thermodynamic tasks within finite time while minimizing thermodynamic costs is a central challenge in stochastic thermodynamics. Here, we develop a unified framework for optimizing the thermodynamic cost of performing various…

统计力学 · 物理学 2025-09-16 Kaito Tojo , Rihito Nagase , Ken Funo , Takahiro Sagawa

A recently proposed quantum mechanical criterion `concavity of energy' for the second law of thermodynamics is studied also for classical particle systems confined in a bounded region by a potential with a time-dependent coupling constant.…

统计力学 · 物理学 2020-12-22 C. Itoi , M. Amano

Safety filters provide a practical approach for enforcing safety constraints in autonomous systems. While learning-based tools scale to high-dimensional systems, their performance depends on informative data that includes states likely to…

机器人学 · 计算机科学 2026-04-16 James Dallas , Thomas Lew , John Talbot , Jonathan DeCastro , Somil Bansal , John Subosits

The famous proof of the Pontryagin maximum principle for control problems on a finite horizon bases on the needle variation technique, as well as the separability concept of cones created by disturbances of the trajectories. In this…

最优化与控制 · 数学 2018-07-05 Nico Tauchnitz

We have performed an extensive analysis of a single particle stochastic heat engine constructed by manipulating a Brownian particle in a time dependent harmonic potential. The cycle consists of two isothermal steps at different temperatures…

统计力学 · 物理学 2014-12-01 Shubhashis Rana , P. S. Pal , Arnab Saha , A. M. Jayannavar

We investigate the optimal control problem for non-Markovian open, dissipative quantum system. Optimal control using Pontryagin maximum principle is specifically derived. The influences of Ohmic reservoir with Lorentz-Drude regularization…

量子物理 · 物理学 2009-10-28 Wei Cui , Zairong Xi , Yu Pan

We develop a general theory describing the thermodynamical behavior of open quantum systems coupled to thermal baths beyond perturbation theory. Our approach is based on the exact time-local quantum master equation for the reduced open…

量子物理 · 物理学 2022-05-31 Alessandra Colla , Heinz-Peter Breuer

In this article we derive a Pontryagin maximum principle (PMP) for discrete-time optimal control problems on matrix Lie groups. The PMP provides first order necessary conditions for optimality; these necessary conditions typically yield two…

系统与控制 · 计算机科学 2018-08-07 Karmvir Singh Phogat , Debasish Chatterjee , Ravi Banavar

In this paper, we consider an optimal control problem in equilibrium thermodynamics of gases. Thermodynamic state of the gas is given by a Legendrian submanifold in a contact thermodynamic space. Using Pontryagin's maximum principle we find…

数学物理 · 物理学 2020-05-20 Alexei Kushner , Valentin Lychagin , Mikhail Roop

A thermodynamic model of a plasma boundary layer, characterized by enhanced temperature contrasts is proposed. The theory is constructed to determine the inner boundary temperature $T_1$ for a specified outer (colder) boundary temperature…

等离子体物理 · 物理学 2026-03-31 Swadesh M. Mahajan , David R. Hatch , Zensho Yoshida , Mike Kotschenreuther

Optimal control theory, also known as Pontryagin's Maximum Principle, is applied to the quantum parameter estimation in the presence of decoherence. An efficient procedure is devised to compute the gradient of quantum Fisher information…

量子物理 · 物理学 2022-05-03 Chungwei Lin , Yanting Ma , Dries Sels

Brownian escape is key to a wealth of physico-chemical processes, including polymer folding, and information storage. The frequency of thermally activated energy barrier crossings is assumed to generally decrease exponentially with…

软凝聚态物质 · 物理学 2020-06-19 Marie Chupeau , Jannes Gladrow , Alexei Chepelianskii , Ulrich F. Keyser , Emmanuel Trizac

In this work, we investigate optimal control of a Brinkman equation couple with sixth-order Cahn-Hilliard equation. The Cahn-Hilliard equation is endowed with a source term accounting for mass exchange and the velocity equation contains a…

最优化与控制 · 数学 2025-12-09 Manika Bag

Maximization of the path information entropy is a clear prescription for constructing models in non-equilibrium statistical mechanics. Here it is shown that, following this prescription under the assumption of arbitrary instantaneous…

数据分析、统计与概率 · 物理学 2016-08-01 Sergio Davis , Diego González

Performances of work-to-work conversion are studied for a dissipative nonlinear quantum system with two isochromatic phase-shifted drives. It is shown that for weak Ohmic damping simultaneous maximization of efficiency with finite power…

介观与纳米尺度物理 · 物理学 2019-06-26 Matteo Carrega , Maura Sassetti , Ulrich Weiss

We consider the problem of finding the energy minimum of a complex quantum Hamiltonian by employing a non-Markovian bath prepared in a low energy state. The energy minimization problem is thus turned into a thermodynamic cooling protocol in…

量子物理 · 物理学 2024-03-29 Alberto Imparato , Nicholas Chancellor , Gabriele De Chiara

We use the structure of conditionally independent states to analyze the stability of topological entanglement entropy. For the ground state of quantum double or Levin-Wen model, we obtain a bound on the first order perturbation of…

强关联电子 · 物理学 2015-06-11 Isaac H. Kim