A. Adams*, H. Zenil, P.C.W. Daviesand S.I.Walker (2016) Formal Definitions of Unbounded Evolution and Innovation Reveal Universal Mechanisms for Open-Ended Evolution in Dynamical Systems. [preprint]arxiv:1607.01750
C. Mathis*, T. Bhattacharya and S.I. Walker (2016) The Emergence of Life as a First Order Phase Transition. arxiv:1503.02776 [preprint]In review.
S.I. Walker (2016) Origins of Life (Evolution of origins). In review Rep. Prog. Phys..
P.C.W. Davies and S.I. Walker (2016) The Hidden Simplicity of Biology: A Key Issues Review. To appear Rep. Prog. Phys. Domagal-Goldman and Wright et al. (includes S.I. Walker) (2016) Astrobiology Primer 2.0. Astrobiology 16(8):561-653. [online]
L. Cronin and S.I. Walker (2016) Beyond Prebiotic Chemistry. Science 352: 1174-1175. DOI: 10.1126/science.aaf6310 [online]
S.I. Walker, H. Kim** and P.C.W. Davies (2016) The Informational Architecture of the Cell. Phil Trans A. 2016 374 20150057; DOI: 10.1098/rsta.2015.0057[online] H. Kim**, P.C.W. Davies and S.I. Walker (2015) New Scaling Relation for Information Transfer in Biological Networks. To appear J. Roy. Soc. Interface 12 20150944; DOI: 10.1098/rsif.2015.0944[online]
P. Nghe, W. Hordijk, S. Kauffman, S.I. Walker, F. Schmidt, H. Kemble, J.A.M. Yeates and N. Lehman (2015) Prebiotic Network Evolution: Six Key Parameters. Roy. Soc. Chem. Mol. Biosyst. 2015,11, 3206-3217[online]
S.I. Walker (2014) Top-down causation and the rise of information in the Emergence of Life. Information5, 424-439.[online]
T.Pavlic, A.M. Adams*, P.C.W. Davies and S.I. Walker (2014) Self-referencing cellular automata: A model of the evolution of information control in biological systems. In Proc. Artificial Life XIVarXiv:1405.4070[online]
S.I. Walker, P.C.W. Davies, P. Samantray* and Y. Aharanov (2014) Quantum Non-Barking Dogs. New J. Phys 16: 063026.[online]
S.I. Walker and P.C.W. Davies (2013) The Algorithmic Origins of Life. J. Roy. Soc. Interface 6:20120869 [online] preprint: arXiv:1207.4803
S.I. Walker, B. Callahan, G. Arya, J.D. Barry, T. Bhattacharya, S. Grigoryev, M. Pellegrini, K. Rippe, S.M. Rosenberg (2013) Evolutionary Dynamics and Information Hierarchies in Biological Systems. Annals. N.Y. Acad. Sci. USA. [online]
N. Vaiyda, S.I. Walker and N. Lehman (2013) Recycling of Informational Units Leads to Selection of Replicators in a Prebiotic Soup. Chemistry & Biology 20: 241 – 252. [online]
M. Gleiser and S.I. Walker (2012) Life’s Chirality from Prebiotic Environments. Int. J. Astrobio. 11: 287- 296. [online] preprint: arXiv:1202.5048
M. Wu, S.I. Walker and P.G. Higgs (2012) Autocatalytic Replication and Homochirality in Biopolymers: Is Homochirality a Requirement of Life or a Result of It? Astrobiology 12: 809 – 817. [online]
S.I. Walker, L. Cisneros and P.C.W. Davies (2012) Evolutionary Transitions and Top-Down Causation. Proceedings of Artificial Life XIII. 283-290 [online] preprint: arXiv:1207.4808
S.I. Walker, M.A. Grover and N. V. Hud (2012) Universal Sequence Replication, Reversible Polymerization and Early Functional Biopolymers: A Model for the Initiation of Prebiotic Sequence Evolution. PLoS ONE 7 (4): e34166. [online]
D. Schulze-Makuch, P.C.W. Davies and S.I. Walker (2012) A Series of One-Way Missions to Explore and Colonize Mars.Proceedings of the 2012 Global Space Exploration Conference.
M. Gleiser, B. Nelson and S.I. Walker (2012) Chiral Polymerization in Open Systems From Chiral-Selective Reaction Rates. Orig. Life Evol. Biosph. 42: 333-346. [online]
S.I. Walker (2011) Homochirality, In Encyclopedia of Astrobiology. M. Gargaud (ed.)
M. Gleiser and S.I. Walker (2010) The Chirality of Life: From Phase Transitions to Astrobiology. Astronomy and Relativistic Astrophysics: New Phenomena and New States of Matter in the Universe Proceedings of the Third Workshop(IWARA07). 17 – 30. preprint: arXiv:0811.1291[online]
M. Gleiser and S.I. Walker (2009) Toward Homochiral Protocells in Noncatalytic Peptide Systems. Orig. Life Evol Biosph.39: 479-493. [online]
M. Gleiser, J. Thorarinson and S.I. Walker (2008) Punctuated Chirality. Orig. Life Evol Biosph. 38: 499-508. [online]
M. Gleiser and S.I. Walker (2008) An extended model for the evolution of prebiotic homochirality: A bottom-up approach to the origins of life. Orig. Life Evol. Biosph. 38: 293 – 315. [online]
Edited volumes, Book chapters & Reports
S.I.Walker, P.C.W. Davies, and G.F.R. Ellis (eds.) From Matter to Life: Information and Causality. Cambridge University Press 2016.
S.I.Walker andP.C.W. Davies. The "Hard Problem" of Life. To appear in From Matter to Life: Information and Causality. S.I. Walker, P.C.W. Davies and G.F.R. Ellis (eds). Cambridge University Press 2016. arxiv:1606.07184 [preprint]
S.I.Walker andP.C.W. Davies. From the Origins of Life to the Nature of Intelligence. To appear in Complexity and Society.Princeton University Press.
S.I. Walker. The Descent of Math. In Trick of Truth: The Mysterious Connection Between Physics and Mathematics? A. Aguirre, B. Foster and Z. Merali (ed.) Springer, 2016. [Essay awarded "Out-of the-box-thinking" Prize in 2015 Foundational Questions in Science Institute Essay Contest] [online]
S.I. Walker. Is Life Fundamental? In Questioning the Foundations of Physics: Which of our Fundamental Assumptions are Wrong?Anthony Aguirre, Brendan Foster, Zeeya Merali (Eds.) 2015 Springer [online] [Essay awarded 4th prize in 2013 Foundational Questions in Science Institute Essay Contest]
C. Burrows, S.I. Walker, S. Amin and E.V. Armburst. Alternative Chemistries for Life: Empirical Approaches. A NSF/NASA Report, J.T. Goodwin and D.G. Lynn (eds). 2014 [online]
S.I. Walker. Transition from Abiotic to Biotic: Is There an Algorithm for It? In Astrobiology: An Evolutionary Approach. Vera Kolb ed. 2014 CRC Press. [online]
S.I. Walker. Little Green Men Might Not Be So "Green", Slate FutureTense (2014) [online] S.I. Walker. Is Life Fundamental? Foundational Questions in Science Essay Contest (4th prize) [online]