Feedback cooling, measurement errors, and entropy production
نویسندگان
چکیده
منابع مشابه
Quantum Measurement and Entropy Production
We study the time evolution of a quantum system without classical counterpart, undergoing a process of entropy increase due to the environment influence. We show that if the environment-induced decoherence is interpreted in terms of wave-function collapses, a symbolic sequence can be generated. We prove that the Kolmogorov-Sinai entropy of this sequence coincides with rate of von Neumann entrop...
متن کاملEntropy production and the ice-albedo feedback
Nonlinear feedbacks in the Earth System provide mechanisms that can prove very useful in understanding complex dynamics with relatively simple concepts. For example, the temperature and the ice cover of the planet are linked in a positive feedback which gives birth to multiple equilibria for some values of the solar constant: fully ice-covered 5 Earth, ice-free Earth and an intermediate unstabl...
متن کاملGluon production, cooling, and entropy in nuclear collisions.
We study the cooling (heating) of a glue-parton gas due to production (destruction) of particles and determine the associated production of entropy. We incorporate sharing of the system energy among a changing number of particles. We find that the entropy of an evolving glue-parton gas changes in an insignificant range once the initial high temperature state has been formed, despite a great cha...
متن کاملMaximum entropy production, cloud feedback, and climate change
[1] A steady-state energy-balance climate model based on a global constraint of maximum entropy production is used to examine cloud feedback and the response of surface temperature T to doubled atmospheric CO2. The constraint ensures that change in zonal cloud amount q necessarily involves change in the convergence KX of meridional energy flow. Without other feedbacks, the changes in q, KX and ...
متن کاملProduction of Information and Entropy in measurement of entangled states
Abstract. Problem of classification of all the set of entangled states is considered. Invariance of entangled states relative to transformations from a group of symmetry of qubit space leads to classification of all states of the system through irreducible representations from that group. Excess of entropy of a subsystem over entropy of the whole system indicates the presence of entaglement in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Statistical Mechanics: Theory and Experiment
سال: 2013
ISSN: 1742-5468
DOI: 10.1088/1742-5468/2013/06/p06014