scholarly journals Fluctuation effects of thermodynamic variables in particle-spilling-from-well model with single potential well

2014 ◽  
Vol 63 (19) ◽  
pp. 193601
Author(s):  
Zhang Xue-Jun ◽  
Rao Jian ◽  
Deng Yang-Bao ◽  
Jiang Lian-jun ◽  
Tian Ye
Author(s):  
Jeremy Moore ◽  
Leopoldo L. Martin ◽  
Kyu Hyun Kim ◽  
Hengky Chandrahalim ◽  
Matt Eichenfield ◽  
...  

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Pritam Chattopadhyay ◽  
Goutam Paul

AbstractEstablished heat engines in quantum regime can be modeled with various quantum systems as working substances. For example, in the non-relativistic case, we can model the heat engine using infinite potential well as a working substance to evaluate the efficiency and work done of the engine. Here, we propose quantum heat engine with a relativistic particle confined in the one-dimensional potential well as working substance. The cycle comprises of two isothermal processes and two potential well processes of equal width, which forms the quantum counterpart of the known isochoric process in classical nature. For a concrete interpretation about the relation between the quantum observables with the physically measurable parameters (like the efficiency and work done), we develop a link between the thermodynamic variables and the uncertainty relation. We have used this model to explore the work extraction and the efficiency of the heat engine for a relativistic case from the standpoint of uncertainty relation, where the incompatible observables are the position and the momentum operators. We are able to determine the bounds (the upper and the lower bounds) of the efficiency of the heat engine through the thermal uncertainty relation.


IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 160191-160202 ◽  
Author(s):  
Shangbin Jiao ◽  
Shuang Lei ◽  
Wei Jiang ◽  
Qing Zhang ◽  
Weichao Huang

1991 ◽  
Vol 95 (23) ◽  
pp. 9298-9302 ◽  
Author(s):  
C. Lifshitz ◽  
F. Louage ◽  
V. Aviyente ◽  
K. Song

1990 ◽  
Vol 68 (12) ◽  
pp. 1362-1376 ◽  
Author(s):  
A. T. Stewart ◽  
C. V. Briscoe ◽  
J. J. Steinbacher

The angular-correlation technique of positron annihilation has been used to detect and measure the localized bubble state of positronium (Ps) in liquid Ne, Ar, Kr, H2, and N2 and in liquid and solid He at various pressures and temperatures. No bubble state was seen in liquid O2 or in solid Ne and Ar. The dynamics of bubble formation is not yet understood. In the cases where theoretical calculations, and adequate data, exist, viz. He, Ar, and H2, there is reasonable agreement for the momentum of the photons from the annihilation of positrons with the outer electrons of these atoms. The Ps annihilations from the self-trapped bubble state are reasonably well described in terms of a simple finite potential-well model.


2010 ◽  
Vol 121-122 ◽  
pp. 646-650
Author(s):  
Zi Kai Zhao ◽  
Guo Hua Hui

Parameter-induced stochastic resonance (PSR) using double potential well model was focused in this paper. Based on the former stochastic resonance study, system parameter µ was used to explore the resonance characteristics. A bluetooth-based wireless sensor network (WSN) was adopted to obtain the experimental data for parameter-induced stochastic resonance simulating. Under fixed noise intensity range, the changes of system parameter µ led to a systematic output resonance. Simulating results demonstrated that the systematic parameter µ could lead to stochastic resonance at signal processing level.


2009 ◽  
Vol 23 (28n29) ◽  
pp. 5515-5529 ◽  
Author(s):  
GUGLIELMO LACORATA ◽  
ANDREA PUGLISI ◽  
ANGELO VULPIANI

One of the major issues concerning the study of a dynamical system is the response to perturbations. In climate dynamics, for example, it is of major interest to understand how a given variable, e.g., the temperature, is sensitive to alterations of some other component of the system, e.g., the greenhouse gas concentration. We review the connection between equilibrium and non-equilibrium properties, also known as Fluctuation-Relaxation Relation, and its main aspects in chaotic and turbulent systems. We consider, in particular, the effects of the fast variables on the slow variables in a multiscale system, as far as the sensitivity properties are concerned. Two examples about (widely speaking) climate modelling are discussed: the Lorenz-96 model and the double-potential well model. Both of them, despite their apparent simplicity, hide the same kind of interesting features of much more complex systems.


2019 ◽  
Vol 99 (4) ◽  
Author(s):  
Julien M. E. Fraïsse ◽  
Jae-Gyun Baak ◽  
Uwe R. Fischer

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