University of Cambridge > Talks.cam > CamPoS (Cambridge Philosophy of Science) seminar > Time-asymmetry in thermal physics

Time-asymmetry in thermal physics

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Matt Farr.

The second law of thermodynamics has a lot to answer for. Reichenbach claims it was responsible for the direction of time. Atkins claims that ‘the second law is one of the all-time great laws of science, for it illuminates why anything – anything from the cooling of hot matter to the formulation of a thought – happens at all’. And Hawking claims it is a tautology.

In this talk, I discuss the different concepts of time-asymmetry in thermal physics and claim that the second law has less bite than the authors above suggest. Instead of an arrow of time, it is more appropriate to say, as Uffink suggests, that the second law describes the ravages of time. Instead of considering thermodynamics to be the source of the arrow of time, I claim that statistical mechanics is the theory we should focus on. By looking at a particular framework advocated by Zwanzig, Zeh and Wallace, I discuss how the time-asymmetry in statistical mechanics arises out of the underlying time-symmetric dynamics.

This talk is part of the CamPoS (Cambridge Philosophy of Science) seminar series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2018 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity