Article (Scientific journals)
Hypergraph-based models of random chemical reaction networks: Conservation laws, connectivity, and percolation
Marehalli Srinivas, Shesha Gopal; ESPOSITO, Massimiliano; Freitas, Nahuel
2025In Journal of Chemical Physics, 163 (19), p. 194112
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Abstract :
[en] Random graph models have been instrumental in characterizing complex networks, but chemical reaction networks (CRNs) are better represented as hypergraphs. Traditional models of random CRNs often reduce CRNs to bipartite graphs, representing species and reactions as distinct nodes, or simpler derived graphs, which can obscure the relationship between the statistical properties of these representations and the physical characteristics of the CRN. We introduce a straightforward model for generating random CRNs that preserve their hypergraph structure and atomic composition, enabling the direct study of chemically relevant features. Notably, our approach distinguishes two notions of connectivity that are equivalent in graphs but differ fundamentally in hypergraphs. These notions exhibit percolation-like phase transitions, which we analyze in detail. The first type of connectivity has relevance to steady-state synthesis and transduction, determining the effective reactions an open CRN can perform at steady state. The second type is suitable to identify which species can be produced from a given initial set of species in a closed CRN. Our findings highlight the importance of hypergraph-based modeling for uncovering the complex behaviors of CRNs.
Disciplines :
Chemistry
Author, co-author :
Marehalli Srinivas, Shesha Gopal
ESPOSITO, Massimiliano  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Freitas, Nahuel
External co-authors :
yes
Language :
English
Title :
Hypergraph-based models of random chemical reaction networks: Conservation laws, connectivity, and percolation
Publication date :
2025
Journal title :
Journal of Chemical Physics
ISSN :
0021-9606
eISSN :
1089-7690
Publisher :
American Institute of Physics, New York, Us ny
Volume :
163
Issue :
19
Pages :
194112
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 23 December 2025

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