Inference of boundaries in causal sets
Sign Up to like & getrecommendations! Published in 2017 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/aaadc4
Abstract: We investigate the extrinsic geometry of causal sets in $(1+1)$-dimensional Minkowski spacetime. The properties of boundaries in an embedding space can be used not only to measure observables, but also to supplement the discrete action… read more here.
Keywords: geometry; causal sets; inference boundaries; boundaries causal ... See more keywords
A tale of two actions a variational principle for two-dimensional causal sets
Sign Up to like & getrecommendations! Published in 2020 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/abe6b7
Abstract: In this paper we will explore two different proposals for the action for causal sets: the Benincasa–Dowker action [1], and a modified version of the chain action [2]. We propose a variational principle for two-dimensional… read more here.
Keywords: principle two; variational principle; dimensional causal; two dimensional ... See more keywords
Embedding causal sets into Minkowski Spacetime
Sign Up to like & getrecommendations! Published in 2022 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ac5922
Abstract: We present a new method for embedding a causal set into an interval of Minkowski spacetime. The method uses spacetime volumes for causally related elements to define causal set analogs of Minkowski inner products. These… read more here.
Keywords: embedding causal; minkowski spacetime; causal set; causal sets ... See more keywords