Stephen in Prague, March 2008
Stephen Powell
I am a Postdoctoral Research Associate of the Joint Quantum Institute at the University of Maryland, College Park. I am based in the Condensed Matter Theory Center, part of the Department of Physics.
- Email:
- CMTC Seminar
- My PhD thesis (Yale University, 2007; 0.5 MB PDF)
- My CV
- Physics images
Research
My research has focused on the many-body theory of ultracold atomic gases ("the hottest field in physics") and frustrated magnetism.
Publications
Classical to quantum mapping for an unconventional phase transition in a three-dimensional classical dimer model, S. Powell and J. T. Chalker, Phys. Rev. B 80, 134413 (2009) (also arXiv:0907.1564).
Magnetic phases and transitions of the two-species Bose-Hubbard model, S. Powell, Phys. Rev. A 79, 053614 (2009) (also arXiv:0902.1993).
SU(2)-invariant continuum theory for an unconventional phase transition in a three-dimensional classical dimer model, S. Powell and J. T. Chalker, Phys. Rev. Lett. 101, 155702 (2008) (also arXiv:0805.3698).
Classical-Quantum Mappings for Geometrically Frustrated Systems: Spin Ice in a [100] Field, S. Powell and J. T. Chalker, Phys. Rev. B 78, 024422 (2008) (also arXiv:0803.4204).
Spin dynamics across the superfluid-insulator transition of spinful bosons, S. Powell and S. Sachdev, Phys. Rev. A 76, 033612 (2007) (also cond-mat/0703011).
Excited state spectra at the superfluid-insulator transition out of paired condensates, S. Powell and S. Sachdev, Phys. Rev. A 75, 031601(R) (2007) (also cond-mat/0608611).
Depletion of the Bose-Einstein condensate in Bose-Fermi mixtures, S. Powell, S. Sachdev, and H. P. Büchler, Phys. Rev. B 72, 024534 (2005) (also cond-mat/0502299).
Quench dynamics across quantum critical points, K. Sengupta, S. Powell, and S. Sachdev, Phys. Rev. A 69, 053616 (2004) (also cond-mat/0311355).