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Research Interests: Prof. Arnold studies the theory of the strong, weak, and electromagnetic interactions at extremely high, relativistic temperatures, such as in the very early Universe (less than a millionth of a second after the Big Bang) or in relativistic collisions in heavy ion accelerators. Topics he has studied include investigating why there is significantly more matter than anti-matter in the Universe and understanding the properties of quark-gluon plasmas. The theoretical methods used for these very high energy problems (as much as a quadrillion degrees Kelvin) can also be applied to certain problems at very low temperatures (less than a millionth of a degree above absolute zero). In this vein, Prof. Arnold has also made some detours from his usual work on particle theory to study the transition temperature for Bose-Einstein condensation of dilute gases of extremely cold atoms.
For lay descriptions of some of Prof. Arnold’s research, click here (quark-gluon plasmas) and here (older work on the problem of matter/anti-matter asymmetry). For Prof. Arnold’s HEP-related publications, click here. Selected Publications: P. Arnold and G. Moore, “QCD plasma instabilities: The nonabelian cascade”, Phys. Rev. D73 (2006) 025006 [arXiv.org: hep-ph/0509206] P. Arnold, C. Dogan, and G. Moore, “The bulk viscosity of high-temperature QCD”, Phys. Rev. D74 (2006) 085021 [arXiv.org: hep-ph/0608012] P. Arnold, J. Drut, and D. Son, “Next-to-next-to-leading order ε expansion for a Fermi gas at infinite scattering length”, Phys. Rev. A75 (2007) 043605 [arXiv.org: cond-mat/0608477] Current and Recent Courses: PHYS 2620: Physics - majors IV (Lecturer) Spring PHYS 7610: Quantum Theory I (Lecturer) Fall |
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![[Photo of Peter Arnold]](/People/Pictures/pa6z.jpg)