Orateur
Sumati Surya
(Raman Research Institute)
Description
The quantum partition function of causal set quantum gravity is a phase weighted
sum over all locally finite posets or causal sets. As the size n of the causal sets grows, however,
the overwhelmingly dominant entropic contribution comes from a class of causal sets that look nothing
like continuum spacetime. A long standing question has been whether this entropy can be overcome
in the large n, classical limit by the discrete Einstein-Hilbert Action, to give spacetime-like
causal sets a fighting chance. I will discuss recent progress on this as well as some of the open
strands of questions that still remain.
