Imperial College London


Faculty of Natural SciencesDepartment of Physics

Professor of Theoretical Physics



+44 (0)20 7594 7574k.christensen Website




Mrs Carolyn Dale +44 (0)20 7594 7579




812Blackett LaboratorySouth Kensington Campus





Research interest

Theoretical and numerical aspects of complex systems, addressing the spontaneous emergence of patters and organisation in non-equilibrium systems composed of many interacting entities. My research has often been a integration of theoretical, computational and experimental studies of complex systems involving a rigorous mathematical approach to pioneer new ways of analysing such systems quantitatively. I have been working within the area of complexity science for about 25 years, developing and applying transferable tools and techniques to real world systems in many different contexts: geology (earthquake & reservoir engineering), atmospheric physics (rain), biology (evolution & social insects), sociology (organisational science), medicine (brain & heart) and fire safety (smouldering). In 2005, I co-authored together with Dr. Nicholas Moloney a pedagogical textbook entitled “Complexity and Criticality”.

Keywords: Complexity science, emergent phenomena, self organisation, scale invariance, earthquakes, evolution, networks, atrial fibrillation. 

Higher education

03.1993: Ph.D. degree in Science, Institute of Physics and Astronomy, University of Århus, Denmark.

05.1990: Master in Science, Institute of Physics and Astronomy, University of Århus, Denmark.



Yao Q, Evans T, Chen B, et al., 2021, Higher-order temporal network effects through triplet evolution, Scientific Reports, Vol:11, ISSN:2045-2322, Pages:1-17

Liu S-W, Willsher J, Bilitewski T, et al., 2021, Butterfly effect and spatial structure of information spreading in a chaotic cellular automaton, Physical Review B, Vol:103, ISSN:2469-9950, Pages:1-6

Cocconi L, Kuhn-Regnier A, Neuss M, et al., 2021, Reconstructing the Intrinsic Statistical Properties of Intermittent Locomotion Through Corrections for Boundary Effects, Bulletin of Mathematical Biology, Vol:83, ISSN:0092-8240

Christensen K, Cocconi L, Sendova-Franks AB, 2021, Animal intermittent locomotion: a null model for the probability of moving forward in bounded space., Journal of Theoretical Biology, Vol:510, ISSN:0022-5193, Pages:1-19

Ciacci A, Sueshige T, Takayasu H, et al., 2020, The microscopic relationships between triangular arbitrage and cross-currency correlations in a simple agent based model of foreign exchange markets, Plos One, Vol:15, ISSN:1932-6203

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