Title:	Entropy and the link action in the causal set path-sum
Authors:	Mathur, Abhishek Singh, Anup Anand Surya, Sumati
Keywords:	quantum gravity causal set theory partial orders link action pathsum
Issue Date:	Feb-2021
Publisher:	IOP Publishing Ltd.
Citation:	Classical and Quantum Gravity, 2021, Vol.38, 045017
Abstract:	In causal set theory the gravitational path integral is replaced by a path-sum over a sample space Ωn of n-element causal sets. The contribution from nonmanifold- like orders dominates Ωn for large n and therefore must be tamed by a suitable action in the low energy limit of the theory. We extend the work of Loomis and Carlip on the contribution of sub-dominant bilayer orders to the causal set path-sum and show that the ‘link action’ suppresses the dominant Kleitman–Rothschild orders for the same range of parameters
Description:	Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
URI:	http://hdl.handle.net/2289/7661
ISSN:	0264-9381 1361-6382 (Online)
Alternative Location:	https://arxiv.org/abs/2009.07623 https://doi.org/10.1088/1361-6382/abd300
Copyright:	2021 IOP Publishing Ltd.
Additional information:	Restricted Access
Appears in Collections:	Research Papers (TP)

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