3 papers
gr-qc2020
A Tale of Two Actions: A Variational Principle for Two-Dimensional Causal Sets
Luca Bombelli, B. B. Pilgrim
In this paper we will explore two different proposals for the action for causal sets: the Benincasa-Dowker action and a modified version of the chain action. We propose a variation…
gr-qc2018
Discrete Spacetime: a Web of Chains
M. Aghili, L. Bombelli, BB Pilgrim
This paper studies the distribution of chain and maximal chain lengths in a causal set. We first provide a new derivation for these distributions for a causal set uniformly embedde…
gr-qc2018
Path length distribution in two-dimensional causal sets
Mir Emad Aghili, Luca Bombelli, B. B. Pilgrim
We study the distribution of maximal-chain lengths between two elements of a causal set and its relationship with the embeddability of the causal set in a region of flat spacetime.…