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Charles E. Campbell

Emeritus Faculty

TATEH 130-21 (office), 624-4141
campbell @ umn.edu

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Member, then Chair, American Physical Society Committee on Constitution and Bylaws (2004-2007); Member, Series Editorial Board, "Advances in Quantum Many-Body Theory," (World Scientific Publishing Co. Ltd.) (1998-- ); Treasurer (1990-- ) and member of the International Advisory Committee for the conference series on Recent Progress in Many-Body Theories (1983-- ); Member, then Chair, Feenberg Medal selection committee (2003-2005); Member, International Advisory Committee for the series International Workshops on Condensed Matter Theories (1987-- ); Member, American Physical Society Committee on Membership (2001-2004); Local Organizer, Workshop on Quantum Magnetism (FTPI, May 2008, UMn); Co-chair, International Symposium on Quantum Fluids and Solids (QFS2000) (June 2000, University of Minnesota); Co-organizer of the LT20 Satellite "Role of the Condensate and Vorticity in Dense Bose Systems," (July 31-August 3, 1993, UMn); Co-chair, "Seventh International Conference on Recent Progress in Many-Body Theories," (August 26-30, 1991, UMn); Co-chair, the Theoretical Physics Institute Workshop "Many-Body Encounter in Minnesota," (May 12-14, 1989, UMn); Co-organizer, Theoretical Physics Institute "Workshop on Quantum Mechanics of Macroscopic Variables" (Wayzata, Minnesota October, 1987).

Fellow of the American Physical Society, 1995; Fulbright Distinguished Senior Scholar, Austria, 1996-97; George W. Taylor Award for Distinguished Service, Institute of Technology, 2001; Visiting Professor, Johannes Kepler University, Linz, Austria, 2007

Summary of Interests
The many-body theory and statistical mechanics of quantum spin systems and of strongly correlated quantum fluids.

About My Work

My primary research is on the ab initio many-body theory and statistical mechanics of very strongly correlated quantum fluids. This includes the helium fluids, low density electron many-body systems and low density quantum plasmas, all of which have properties that cannot be well described by traditional quantum many-body theories such as mean field, Landau theory, density functional theory, or dynamic mean field theory. The challenges are due to the very strong correlations between the particles in these systems. To understand the consequences of these strong correlations, we have been heavily involved in the development of Dynamic Many-Body Theory, which recently has been highly successful in accounting exceedingly well for inelastic neutron scattering from superfluid liquid helium four. This theory and these experiments have revealed a much richer multi-quasiparticle dynamics than previously known. The experiments have been near absolute zero and the theory at absolute zero. We are continuing our work to extend the theory to finite temperature, including the phase transition from a normal fluid to a superfluid in liquid helium four.

Advisees and Collaborators


Selected Publications

R. F. Bishop, P. H. Y. Li, D. J. J. Farnell, J. Richter, and C. E. Campbell, The frustrated Heisenberg antiferromagnet on the checkerboard lattice: the J 1--J 2 model, Phys Rev B 85, 205122 (2012)

R. F. Bishop, P. H. Y. Li, D. J. J. Farnell, and C. E. Campbell, The frustrated Heisenberg antiferromagnet on the honeycomb lattice: the J1–J2 model, J. Phys.: Condens. Matt

R. F. Bishop, P. H. Y. Li, D. J. J. Farnell, and C. E. Campbell, The frustrated Heisenberg antiferromagnet on the honeycomb lattice: the J1–J2 model, J. Phys.: Condens. Matt (2012)

P.H.Y. Li, R.F. Bishop, D.J.J. Farnell, J. Richter, and C.E. Campbell, Ground-state phases of the frustrated spin-(1/2) J1-J2-J3 Heisenberg ferromagnet (J1<0) on the honeycomb lattice with J3=J2>0, Phys Rev B 85, 085115 (2012)

P.H.Y. Li, R.F. Bishop, D.J.J. Farnell, J. Richter, and C.E. Campbell , Phase diagram of a spin-1/2 J1–J2–J3 Heisenberg magnet on a honeycomb lattice, Phys. Rev. B [Kaleidoscope]

D.J.J. Farnell, R.F. Bishop, P.H.Y. Li, J. Richter, and C.E. Campbell, Frustrated Heisenberg antiferromagnet on the honeycomb lattice: A candidate for deconfined quantum criticality, Phys. Rev. B 84, 012403 (2011)

R.F. Bishop, P.H.Y. Li, D.J.J. Farnell, and C.E. Campbell, Magnetic ordering of antiferromagnets on a spatially anisotropic triangular lattice, Int. J. Mod. Phys. B 24, 5011 (2010); Erratum: IJMPB 25, 2787 (2011)

R.F. Bishop, P.H.Y. Li, D.J.J. Farnell, and C.E. Campbell, Magnetic order on a frustrated spin-1/2 interpolating kagome/square Heisenberg antiferromagnet on the Union Jack lattice, Phys. Rev. B 82, 104406 (2010)

R.F. Bishop, P.H.Y. Li, D.J.J. Farnell, and C.E. Campbell, Magnetic order on a frustrated spin-1/2 Heisenberg antiferromagnet on the Union Jack lattice, Phys. Rev. B 82, 024416 (2010)

C. E. Campbell and E. Krotscheck, Dynamic many-body theory: Pair fluctuations in bulk 4He, Phys. Rev. B 80, 174501 (2010)

C. E. Campbell and E. Krotscheck, Many-Body Fluctuations and the Dynamics of Liquid He-4, J. Low Temp. Phys. 158, 226 (2010)

R.F. Bishop, P.H.Y. Li, D.J.J. Farnell, and C.E. Campbell, Magnetic ordering of antiferromagnets on a spatially anisotropic triangular lattice, Int. J. Mod. Phys. B 24, 5011 (2010)

C.E. Campbell and E. Krotscheck, Dynamic many-body theory: Pair fluctuations in bulk 4He, Phys. Rev. B 80, 174501 (2009)

R.F. Bishop, P.H.Y. Li, D.J.J. Farnell, and C.E. Campbell, Magnetic order in a spin ½ interpolating square-triangle Heisenberg antiferromagnet, Phys. Rev. B 79, 174405 (2009)

E. Krotscheck and C.E. Campbell, Many-Boson Dynamic Correlations, Int. J. Mod. Phys. B 22, 4296 (2008)

R.F. Bishop, P.H.Y. Li, R. Darradi, J. Richter, and C.E. Campbell, Effect of anisotropy on the ground-state magnetic ordering of the spin-one quantum J1XXZ—J2XXZ model on the square lattice, J. Phys.: Condens. Matter 20 (2008) 415213

M. Yan, H. Wang, and C. E. Campbell, Unconventional magnetic vortex structures observed in micromagnetic simulations, J. Magn. Magn. Matter. doi:10.1016/j.jmmm.2008.02.170, (2008)

H. Wang, M. Yan, and C. E. Campbell, Vorticity and antivorticity in submicron ferromagnetic films, Int. J. Mod. Phys. B 21, 2289 (2007)

H. Wang and C. E. Campbell, Spin Dynamics of a Magnetic Antivortex, Phys Rev B 76, 220407 (2007)

M. Yan, H. Wang, P. A. Crowell, C. E. Campbell, and C. Bayer, Spin Wave Modes In Thin-Film Ferromagnetic Stripes, Condensed Matter Theories Vol 20, edited by John W. Clark, Robert M. Panoff, and Haochen Li (Nova, New York, 2006),p. 251

G. D. Skidmore, A. Kunz, C. E. Campbell, and E. Dan. Dahlberg, Micromagnetic domain structures in cylindrical nickel dots, Phys. Rev. B 70, 012410 (2004)

C. Bayer, J. P. Park, H. Wang, M. Yan, C. E. Campbell, and P. A. Crowell, Spin Waves in an Inhomogeneously Magnetized Stripe, Phys. Rev. B 69, 134401 (2004)

C. E. Crowell, Ming Yan, J Berezovsky, and P. A. Crowell, Simulations of Magnetic Dynamics in Iron-Cobalt Films, Condensed Matter Theories 17, 295 (2003).

C. E. Campbell, Helium Liquids in Confined Geometries; Chapter 1 of Microscopic Approaches to Quantum Many-Body Theories in the series, Advances in Quantum Many-Body Theories, (E. Krotscheck and J. Navarro, ed., World Scientific, 2002)

A. Kunz and C. E. Campbell, Magnetic Vortices in Submicron Nickel Dots and Films, Condensed Matter Theories 16, (2001)

C.E. Campbell and A. Kunz, Metastable Domain Patterns Studied Using Monte Carlo Simulations, Condensed Matter Theories 15, (2000).

C. E. Campbell, A. Wynveen, A. Setty, A. Howard, and J. W. Halley, Identical Particle Scattering from a Weakly Coupled Bose Condensed Gas, hys. Rev. A 62, 023602 (2000).

Education

Ph.D. in Physics, Washington University (St. Louis), 1969.
B.S. in Physics, The Ohio State University, 1964.