John H. Rourke Professor of Physics
Higgins Hall 230F
Telephone: 617-552-3590
Email: kevin.bedell@bc.edu
The application of many body theory to a variety of strongly correlated quantum fluids. This includes, the electron gas, liquid 3He, 4He, 3He-4He mixtures, nuclear matter, cold atom Fermi gases, heavy fermions, exotic ferromagnetic metals and superconductors, and weak ferromagnetic metals (including the, Higgs amplitude mode). Most recently we have worked on: F/N junctions, non-equilibrium spin systems, Dirac materials (graphene), the ratio of viscosity/entropy in strongly correlated Fermi gases, and the thermodynamic properties of a Majorana gas.
1. The Stability of the Roton Liquid in Superfluid 4He, K.S. Bedell, I.A. Fomin, and D. Pines, J. Low Temp. Phys. 48, 417 (1982).
2. The Incompressibility of Neutron-Rich Nuclear Matter, M. Prakash and K.S. Bedell, Phys. Rev. C 32, 1118 (1985).
3. One-Component Fermi Liquid Theory and the Properties of UPt3, C.J. Pethick, D. Pines, K.F. Quader, K.S. Bedell, and G.E. Brown, Phys. Rev. Lett. 57, 1955 (1986).
4. Nuclear Spin-Lattice Relaxation in 3He-4He Mixtures, M. Lowe, P.C. Hammel, R.E. Ecke, K. Bedell, and M. Takigawa, Phys. Rev. B 37, 2281 (1988).
5. Robustness of a Local Fermi Liquid Against Ferromagnetism and Phase Separation, J. Engelbrecht and K. S. Bedell, Phys. Rev. Lett. 74, 4265 (1995).
6. Luttinger’s Theorem in One Dimensional Metals, K. B. Blagoev and K. S. Bedell, Phys. Rev. Lett. 79, 1106 (1997).
7. Effect of Ferromagnetic Spin Correlations on Superconductivity in Ferromagnetic Metals, K. B. Blagoev, J. R.Engelbrecht, and K. S. Bedell, Phys. Rev. Lett. 82, 133-136 (1999).
8. Coexistence of Ferromagnetism and Superconductivity, N. I. Karchev, K. B. Blagoev, K. S. Bedell and P. B. Littlewood, Phys. Rev. Lett. 86, 846 (2001).
9. Quantum Spin Hydrodynamics and a New Spin Current mode in Ferromagnetic Metals, K. S. Bedell and K. B. Blagoev, Phil. Mag. Letters 81, 511 (2001).
10. Absence of Wigner Crystallization in Graphene, Hari P. Dahal, Y. Joglekar, K. S. Bedell, and A. V. Balatsky, Phys. Rev. B 74, 233405 (2006).
11. Spin Waves in Quasiequilibrium Spin Systems, K. S. Bedell and Hari P. Dahal, Phys. Rev. Lett. 97, (2006).
12. The Virial Theorem in Graphene and other Dirac Materials, J. Dustan Stokes, Hari P. Dahal, Alexander V. Balatsky, and Kevin S. Bedell, Phil. Mag. Letters, 93, 672 (2013).
13. Effective Spin Diffusion in Spin-Polarized Equilibrium and Quasiequilibrium Fermi liquids, Hari P. Dahal and K. S. Bedell, Phys. Rev. B 87, 174406 (2013).
14. Spin Orbit Magnetism and Unconventional Superconductivity, Yi Zhang and K. S. Bedell, Phys. Rev. B 87, 115134 (2013).
15. Approaching Pomeranchuk Instabilities from the Ordered Phase: A Crossing-symmetric Equation Method, Kelly Reidy, Khandker Quader and Kevin BedellNuclear Physics A 928, 168 (2014).
16. “The ‘Higgs’ amplitude mode in weak ferromagnetic metals,” Yi Zhang, Paulo F. Farinas and Kevin S. Bedell, Acta Physica Polonica A 127 (215) (A Conference proceedings, Physics of Magnetism 2015).
17. “Superfluid (Amplitude) Fluctuations Above Tc in a Unitary Fermi Gas,” Hua Li, Jason Jackiewicz, and Kevin S. Bedell, Phys. Rev B 91 075107 (2015).
18. “Quantum spin transport and dynamics through a ferromagnetic/normal metal junction,” Hua Li and Kevin S. Bedell, Phys. Rev. B 92, 224437 (2015).