Entropy & Relativity: What's the Relationship?

[Galteeth]

Since the entropy increase in a system is a function of time, it would seem that for different observers, rates of entropy would move differently. I am struggling a little hear with putting this into a coherent question, as I am a layman, but the jist is: both the notion of a closed system and the observation of time are dependent on an observer. What is the relationship between the thermodynamic arrow of time and the role of the observer in relativity? I imagine this is a complicated, so links to articles or such would be sufficient.

 

[atyy]

http://arxiv.org/abs/0902.4651

 

[ImaLooser]

Since the entropy increase in a system is a function of time, it would seem that for different observers, rates of entropy would move differently. I am struggling a little hear with putting this into a coherent question, as I am a layman, but the jist is: both the notion of a closed system and the observation of time are dependent on an observer. What is the relationship between the thermodynamic arrow of time and the role of the observer in relativity? I imagine this is a complicated, so links to articles or such would be sufficient.

Entropy is a function of time and can be used as a clock. It behaves like any other clock in relativity.

 

[Galteeth]

http://arxiv.org/abs/0902.4651

Thanks, this is exactly what I meant!