Superconductors and superfluids are examples of states in which matter behaves in strange ways. Electrons are conducted without resistance and fluids flow with no viscosity. To understand these unique properties, researchers use quantum field theories, physical theories that describe elementary particles, such as electrons and quarks, and pseudoparticles, such as pairs of electrons that can move freely in a superconductor.
There are numerous quantum field theories and one important issue is how they should be classified. Dr. Agnese Bissi from Harvard University, USA, will study quantum field theories and classify them based on their symmetries.
Non-relativistic quantum field theories are used to describe phase transitions in materials, like when water boils and forms steam, for example. Agnese Bissi will investigate how non- relativistic quantum field theories can describe the interaction between cold atoms – atoms that are cooled to close to absolute zero. At these low temperatures, matter is governed by quantum mechanics. The models of cold atoms are therefore used for studying various quantum mechanical phenomena.
As a Wallenberg Academy Fellow, Agnese Bissi will work at Uppsala University.
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Read more about Agnese Bissi at harvard.edu
Photo: Markus Marcetic