2 1 Ju n 20 07 Entropy and time : Thermodynamics of diffusion processes

نویسنده

  • Piotr Garbaczewski
چکیده

We give meaning to the first and second laws of thermodynamics in case of mesoscopic out-of-equilibrium systems which are driven by diffusion processes. The notion of the entropy production is analyzed. The role of the Helmholtz extremum principle is contrasted to that of the more familiar entropy extremum principles. PACS numbers: 02.50.Ey, 05.20.-y, 05.40.Jc

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

2 00 8 Entropy and time : Thermodynamics of diffusion processes

We give meaning to the first and second laws of thermodynamics in case of mesoscopic out-of-equilibrium systems which are driven by diffusion-type, specifically Smoluchowski, processes. The notion of entropy production is analyzed. The role of the Helmholtz extremum principle is contrasted to that of the more familiar entropy extremum principles. PACS numbers: 02.50.Ey, 05.20.-y, 05.40.Jc

متن کامل

] 1 6 Ju n 20 05 Dynamical Correlations as Origin of Nonextensive Entropy

We present a simple and general argument showing that a class of dynamical correlations give rise to the so-called Tsallis nonextensive statistics. An example of a system having such a dynamics is given, exhibiting a non-Boltzmann energy distribution. A relation with prethermalization processes is discussed. 1 Generalized statistics and correlations In the recent paper by J. Berges et al. [1], ...

متن کامل

2 3 Ju n 20 09 Entropy and efficiency of a molecular motor model

Abstract. In this paper we investigate the thermodynamic and the Stokes efficiency for a broad class of models for molecular motors. We use path-space formalism and time-symmetry breaking arguments to show that both efficiencies are smaller than 1. These arguments are model-independant and are thus applicable on a wide range of models. We also consider the motor as a ratchet which gives more bo...

متن کامل

Statistical Thermodynamics of General Minimal Diffusion Processes: Constuction, Invariant Density, Reversibility and Entropy Production

The solution to nonlinear Fokker-Planck equation is constructed in terms of the minimal Markov semigroup generated by the equation. The semigroup is obtained by a purely functional analytical method via Hille-Yosida theorem. The existence of the positive invariant measure with density is established and a weak form of Foguel alternative proven. We show the equivalence among self-adjoint of the ...

متن کامل

Thermodynamics and Kinetics of Vaporization of Pbs From Complex Cu-Fe Mattes

Thermodynamics and kinetics of vaporization of lead sulfide from typical copper-smelting mattes of commercial interest are investigated in the temperature range 1388 K to 1573 K by vapor transport technique and plasma arc spectroscopy. The total mass of the dominant vaporizing species PbS that leaves the matte is described by the Newman's numerical solution to the second Fick's law combined wit...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008