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 Taylor, G and Jubb, I},
doi = {10.1103/PhysRevD.100.126008},
journal = {Physical Review D: Particles, Fields, Gravitation and Cosmology},
pages = {1--17},
title = {Horizon molecules in causal set theory},
url = {},
volume = {100},
year = {2019}

RIS format (EndNote, RefMan)

AB - We propose a new definition of “horizon molecules” in causal set theory following pioneering work by Dou and Sorkin. The new concept applies for any causal horizon and its intersection with any spacelike hypersurface. In the continuum limit, as the discreteness scale tends to zero, the leading behavior of the expected number of horizon molecules is shown to be the area of the horizon in discreteness units, up to a dimension dependent factor of order one. We also determine the first order corrections to the continuum value, and show how such corrections can be exploited to obtain further geometrical information about the horizon and the spacelike hypersurface from the causal set.
AU - Barton,C
AU - Counsell,A
AU - Dowker,F
AU - Gould,DSW
AU - Taylor,G
AU - Jubb,I
DO - 10.1103/PhysRevD.100.126008
EP - 17
PY - 2019///
SN - 1550-2368
SP - 1
TI - Horizon molecules in causal set theory
T2 - Physical Review D: Particles, Fields, Gravitation and Cosmology
UR -
UR -
UR -
UR -
VL - 100
ER -