A ug 2 00 1 Sticky Spheres , Entropy barriers and Non - equilibrium phase transitions

نویسندگان

  • S. L. Narasimhan
  • P. S. R. Krishna
  • K. P. N. Murthy
چکیده

A sticky spheres model to describe slow dynamics of a non-equilibrium system is proposed. The dynamical slowing down is due to the presence of entropy barriers. An exact steady state analysis of the representative mean field equations, in the case when the clusters are chosen with the samè a priori probability, demonstrates a non-equilibrium phase transition from an exponential cluster size distribution to a powerlaw.

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 2 Ja n 20 01 Sticky Spheres , Entropy barriers and Non - equilibrium phase transitions

A sticky spheres model to describe slow dynamics of a non-equilibrium system is proposed. The dynamical slowing down is due to the presence of entropy barriers. We present an exact mean field analysis of the model and demonstrate that there is a non-equilibrium phase transition from an exponential cluster size distribution to a powerlaw.

متن کامل

ar X iv : h ep - l at / 0 20 80 59 v 1 2 7 A ug 2 00 2 1 Hadronic Spectral Functions above the QCD Phase Transition ∗

We extract the spectral functions in the scalar, pseudo-scalar, vector, and axial-vector channels above the deconfinement phase transition temperature (Tc) using the maximum entropy method (MEM). We use anisotropic lattices, 32 3 × 32, 40, 54, 72, 80, and 96 (corresponding to T = 2.3Tc → 0.8Tc), with the renormalized anisotropy ξ = 4.0 to have enough temporal data points to carry out the MEM an...

متن کامل

Phase Transitions in " Small " Systems – a Challenge for Thermodynamics – *

Traditionally, phase transitions are defined in the thermodynamic limit only. We propose a new formulation of equilibrium thermo-dynamics that is based entirely on mechanics and reflects just the geometry and topology of the N-body phase-space as function of the conserved quantities, energy, particle number and others. This allows to define thermo-statistics without the use of the thermodynamic...

متن کامل

Fluid-solid transitions on walls in binary hard-sphere mixtures

– We present measurements and theory of a fluid-solid phase transition at a hard, flat wall in a two-sized hard-sphere mixture. With particle concentrations well below the level for bulk phase separation, a fluid monolayer (enriched in the larger spheres) forms at the wall. At slightly higher concentrations, the wall-fluid freezes into a wall-solid phase which coexists with the bulk fluid. Meas...

متن کامل

The stability limit of the fluid phase of polydisperse sticky spheres

It has been shown by Stell [J. Stat. Phys., 63, 1203 (1991)] that at low temperature monodisperse sticky spheres collapse to form coexisting close-packed solid and infinitely dilute gases. We show that polydisperse sticky spheres also collapse and calculate the collapse temperature. The polydisperse spheres separate into fractions with narrower polydispersities which can then solidify. This is ...

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 2001