Universe Bounded By Event Horizon: A Non equilibrium Thermodynamic   Prescription
  The present work deals with universe bounded by the cosmological event horizon as a thermodynamical system which is irreversible in nature.Using non-equilibrium thermodynamical approach the entropy variation on the event horizon has been evaluated.The additional term in the entropy variation depends on the irreversible process parameter.Finally,two dark energy models are presented and results are analyzed. 
Subenoy Chakraborty and Atreyee Biswas
physics.gen-ph