Tim Evans

Senior Lecturer (Physical sciences)


I am a Senior Lecturer (equivalent to an associate professor) in the Theoretical Physics group and the Complexity and Networks programme at Imperial College London. I did my first degree in Natural Sciences (Physics) at Cambridge followed by a PhD at Imperial, supervised by Ray Rivers. I then spent time as a researcher at the University of Alberta in Edmonton Canada, followed by research positions back at Imperial, in part as a Royal Society University Research Fellow. My main interest is in the behaviour of many body systems both in and out of equilibrium. Currently I am interested in ideas falling under the broad area of complex systems. In particular the properties of Complex Networks, such as the "six degrees of separation", intrigue me. This is both from a theoretical perspective and in terms of applications to practical problems such as bibliometrics or cultural transmission, part of an interest in sociophysics in general. For instance I have an ongoing project in Archaeology. I'm also interested in Quantum Field theory. My early research was on the many-body problems where the underlying dynamics is described by quantum field theory, a topic known as Thermal Field Theory or Finite Temperature Field Theory. Initially this was in the context of relativistic particle physics which is important for applications such as cosmology and quark gluon plasmas. I later became interested in parallel problems in condensed matter physics, where lab based experiments can be performed. I was also interested in general issues with quantum field theory which led to work on multiplicative anomalies and in turn their implications for zeta-function renormalisation.


  • Interactions in space for archaeological models DOI: 10.1142/S021952591100327X
  • The emergence of leadership in social networks DOI: 10.1016/j.physa.2011.11.011
  • Universality of performance indicators based on citation and reference counts DOI: 10.1007/s11192-012-0694-9
  • Community structure and patterns of scientific collaboration in Business and Management DOI: 10.1007/s11192-011-0439-1
  • Flow graphs: Interweaving dynamics and structure DOI: 10.1103/PhysRevE.84.017102
  • The Theran eruption and Minoan palatial collapse: New interpretations gained from modelling the maritime network
  • Uncovering space-independent communities in spatial networks DOI: 10.1073/pnas.1018962108
  • Line graphs of weighted networks for overlapping communities DOI: 10.1140/epjb/e2010-00261-8
  • Line graphs, link partitions, and overlapping communities DOI: 10.1103/PhysRevE.80.016105
  • Modelling maritime interaction in the Aegean Bronze Age
  • Network rewiring models
  • Exact solution for the time evolution of network rewiring models DOI: 10.1103/PhysRevE.75.056101
  • Exact solutions for network rewiring models DOI: 10.1140/epjb/e2007-00084-8
  • Scale-free networks from self-organization DOI: 10.1103/PhysRevE.72.026138
  • Complex networks DOI: 10.1080/00107510412331283531
  • Complex networks DOI: 10.1080/00107510412331283531
  • Transport coefficients and analytic continuation in dual (1 + 1)-dimensional models at finite temperature DOI: 10.1016/S0550-3213(02)01145-8
  • Effect of weak interactions on the ultrarelativistic Bose-Einstein condensation temperature
  • Non-perturbative calculations of a global U(2) theory at finite density and temperature DOI: 10.1016/S0550-3213(00)00753-7
  • An optimized perturbation expansion for a global O(2) theory
  • Regularization schemes and the multiplicative anomaly DOI: 10.1016/S0370-2693(99)00503-1
  • On normal ordering and canonical transformations in thermal field theory DOI: 10.1088/0305-4470/32/7/009
  • On the phase structure of the 3D SU(2)-Higgs model and the electroweak phase transition
  • Wick's theorem for nonsymmetric normal ordered products and contractions
  • Thermal green functions at zero energy
  • Thermalization of gauge bosons in the Abelian Higgs model
  • Wick's theorem at finite temperature DOI: 10.1016/0550-3213(96)00286-6
  • Winding number correlation functions and cosmic string formation
  • Real time thermal propagators for massive gauge bosons DOI: 10.1007/BF01571312
  • Reexamination of the path-ordered approach to real time thermal field theory DOI: 10.1103/PhysRevD.52.4652
  • New time contour for equilibrium real-time thermal field theories DOI: 10.1103/PhysRevD.47.R4196
  • Role of quantum fluctuations in defect-dominated transitions DOI: 10.1103/PhysRevD.47.5316
  • Heisenberg and interaction representations in thermo field dynamics
  • N-point finite temperature expectation values at real times
  • Spectral representation of three-point functions at finite temperature
  • Three-point functions at finite temperature
  • The chiral phase transition in QCD DOI: 10.1007/BF01555892
  • Zero energy and thermodynamic equilibrium DOI: 10.1007/BF01566935
  • Zero momentum calculations for finite temperature field theory DOI: 10.1007/BF01556175
  • Dynamical Processes on Complex Networks, by A. Barrat, M. Barthélemy and A. Vespignani DOI: 10.1080/00107510903084036
  • Line Graphs, Link Partitions and Overlapping Communities DOI: 10.1103/PhysRevE.80.016105
  • Universality of Performance Indicators based on Citation and Reference Counts DOI: 10.1007/s11192-012-0694-9
  • {Clique Graphs and Overlapping Communities

Usage metrics

Co-workers & collaborators

Ray Rivers

Emeritus Professor and Research Fellow - Imperial College London

Ray Rivers

James Clough

James Clough

Tim Evans's public data