Imperial College London

Prof Fay Dowker

Faculty of Natural SciencesDepartment of Physics

Professor of Theoretical Physics







Mrs Graziela De Nadai-Sowrey +44 (0)20 7594 7843




Huxley BuildingSouth Kensington Campus






BibTex format

author = {Barton, C and Counsell, A and Dowker, F and Gould, DSW and Jubb, I and Taylor, G},
title = {Horizon Molecules in Causal Set Theory},
url = {},

RIS format (EndNote, RefMan)

AB - We propose a new definition of "horizon molecules" in Causal Set Theoryfollowing pioneering work by Dou and Sorkin. The new concept applies for anycausal horizon and its intersection with any spacelike hypersurface. In thecontinuum limit, as the discreteness scale tends to zero, the leading behaviourof the expected number of horizon molecules is shown to be the area of thehorizon in discreteness units, up to a dimension dependent factor of order one.We also determine the first order corrections to the continuum value, and showhow such corrections can be exploited to obtain further geometrical informationabout the horizon and the spacelike hypersurface from the causal set.
AU - Barton,C
AU - Counsell,A
AU - Dowker,F
AU - Gould,DSW
AU - Jubb,I
AU - Taylor,G
TI - Horizon Molecules in Causal Set Theory
UR -
ER -