Phase transitions in particle physics: breaking the strong interaction
Speaker: Professor Chris Allton
Affiliation: Swansea University, U.K.
Abstract
QCD, the strong interaction of particle physics which binds quarks together into hadrons, has a rich phase structure, much of which is not fully understood. At low temperatures, the QCD interaction has a linearly rising potential and has the familiar confining properties where quarks are bound into hadrons. At temperatures above several trillion Kelvin, QCD exists as a quark gluon plasma, which is a relatively weakly interacting phase where quarks are not bound into hadrons. This plasma phase existed briefly in the very early Universe, and, incredibly, can be reproduced in particle experiments in e.g. CERN where heavy lead nuclei are collided in the Large Hadron Collider.
This talk will review our theoretical studies of hadrons as the temperature increases using supercomputer simulations and techniques drawn heavily from statistical mechanics. Results for the QCD spectrum, including parity partners and the “melting” temperature of hadronic states will be discussed.
If you would like to speak to Chris, please get in touch with him via email.
About Physics Seminars
The weekly Physics Seminar series focuses on a broad range of physics research within SMP, along with frequent presentations from visiting researchers. Seminars are usually scheduled for 1.00pm on Tuesdays.
The talks are typically more specialised than a colloquium but are often attended by staff and PhD students across a broad range of areas. Speakers are thus encouraged to include introductory material in the talks.
All SMP researchers and HDR students are encouraged to speak. Please email Lewis Williamson to register your interest.
The seminars are open so there is no need to register your attendance.