Kibble worked on mechanisms of
symmetry breaking,
phase transitions and the
topological defects (monopoles,
cosmic strings or
domain walls) that can be formed. He is most noted for his co-discovery of the
Higgs mechanism and
Higgs boson with
Gerald Guralnik and
C. R. Hagen. As part of
Physical Review Letters 50th anniversary celebration, the journal recognised this discovery as one of the milestone papers in PRL history. He was awarded the
American Physical Society's 2010
J. J. Sakurai Prize for Theoretical Particle Physics. While Guralnik, Hagen, and Kibble are widely considered to have authored the most complete of the
early papers on the Higgs theory, they were
controversially not included in the 2013
Nobel Prize in Physics. Kibble pioneered the study of topological defect generation in the early universe. of the
Institute of Physics (1991), and of Imperial College London (2009). He was also a member of the American Physical Society (1958), the
European Physical Society (1975) and the
Academia Europaea (2000). In addition to the Sakurai Prize, Kibble has been awarded the
Hughes Medal (1981) of the Royal Society, the
Rutherford (1984) and
Guthrie Medals (1993) of the Institute of Physics, the
Albert Einstein Medal (2014) and the Royal Medal of the
Royal Society of Edinburgh (2014). He was appointed a
CBE in the
1998 Birthday Honours and was
knighted in the
2014 Birthday Honours for services to physics. Kibble was posthumously awarded the
Isaac Newton Medal by the Institute of Physics for his outstanding lifelong commitment to the field. ==Publications==