University of Birmingham > Talks@bham > Theoretical Physics Seminars > The Deep Structure of Spacetime

The Deep Structure of Spacetime

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

  • UserFay Dawker, Imperial College
  • ClockThursday 11 November 2010, 13:45-15:00
  • HouseTheory Library.

If you have a question about this talk, please contact Dr Dimitri M Gangardt.

I will begin by recalling what we know about the ``surface’‘ structure of spacetime: what spacetime appears to be, as far as we can tell. This surface structure is a Lorentzian manifold and I will exhibit a proof that (give a certain causality condition, somewhat stronger than the non-existence of closed causal loops) the so-called causal structure of a Lorentzian manifold determines 9/10 of the metric (in 3+1 dimensions). I will briefly rehearse the circumstantial evidence that leads many physicists to believe that there is a discrete, atomic ``deep structure’’ to spacetime and then introduce the causal set as a concrete proposal for that deep structure. I will report on recent efforts to identify ``smoking gun’‘ signatures of the atomicity of spacetime, signatures which could be the ``Brownian motion’’ of our age.

This talk is part of the Theoretical Physics Seminars series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


Talks@bham, University of Birmingham. Contact Us | Help and Documentation | Privacy and Publicity.
talks@bham is based on from the University of Cambridge.