MSc - Theoretical Physics

University of Hertfordshire

Relativistic field theory is central to high energy physics, from particle colliders to astrophysics. This module introduces classical relativistic field theory with an emphasis on using the right theoretical framework to manifest the unity and simplicity of physics. Considerable stress is placed on the role of symmetry as a powerful organising principle, from the global Poincaré symmetry of special relativity, which through Noether's theorem implies the existence of relativistic conserved quantities, to the local U(1) gauge symmetry of Maxwell theory, which underpins the electromagnetic force.

Einstein's revolutionary general theory of relativity describes gravity as the curvature of space-time. This elegant vision of gravity emerged from his "happiest thought" - that gravity vanishes in a free-falling elevator (and the ensuing equivalence of gravity and acceleration). Follow Einstein's thought processes and learn the relativistic theory of gravity, which predicts some of the most mysterious (but observed!) astrophysical phenomena - black holes, the expanding Universe, and gravitational waves.

Quantum Field Theory (QFT) is a powerful framework for fundamental particle physics. It underpins the Standard Model of elementary particles, possibly our most precise and well-tested scientific theory. QFT treats particles as excited states of underlying fields, uniting classical relativistic field theory with quantum mechanics. Learn about path integrals, Feynman diagrams and rules, and their application to scattering processes in particle accelerators, where new particles (such as the Higgs boson) continue to be discovered in some of the most ambitious "big science" projects ever undertaken.

In this module, students will be introduced to a variety of topics in modern theoretical physics beyond those appearing in standard undergraduate programmes. Topics covered are foundational to many areas of current research, from quantum computing to black holes, and are intended to provide a springboard to allow students to engage in research activity. The learning activities will also develop skills in analysis and evaluation, literature searching, conceptualisation and critical thinking, scientific writing, and communication and presentation, key desirables for the CVs of job/research applicants.

Students will carry out a major piece of investigative work at the interface with current research in theoretical or mathematical physics. A successful project will become a key feature of a student's professional profile and CV, often a central talking point in graduate job and/or postgraduate applications. The module develops skills in research enquiry, problem solving, analysis and evaluation, organisational working, interpersonal and communication skills, scientific writing, information searching, conceptualisation, critical thinking, adaptation to context, synthesis and creativity, personal evaluation/development, and ethical awareness and application.