Spacetime as a evolving causal set

Causal set theory is a discrete approach to quantum gravity. Spacetime continuum is replaced by discrete and locally finite posets, causal sets. The classical sequential growth (CSG) dynamics by Rideout and Sorkin is a framework for growing a causal set based upon physical conditions. In the growth process, elements are added one at a time, and the new element's past structure is determined by a sequence of parameters. We explore whether or not causal sets generated in such a fashion are manifoldlike (representing physical spacetimes) using chain distributions. We will show the results of causal sets generated by several subfamilies of the dynamics. Our simulations support the conjecture that the universe go through an initial stage of being a random tree-like structure. We also try to find a connection between CSG dynamics and actions. We will present a scheme to explore how the birth of an new element alters the action of an manifoldlike causal set and some preliminary results.