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28 papers · 1 filter
Quantum group symmetry in sine-Gordon and affine Toda field theories on the half-line
Gustav W Delius, Niall J. MacKay
We consider the sine-Gordon and affine Toda field theories on the half-line with classically integrable boundary conditions, and show that in the quantum theory a remnant survives…
Electric field gradients from first-principles and point-ion calculations
E. P. Stoll, P. F. Meier, T. A. Claxton
Point-ion models have been extensively used to determine "hole numbers" at copper and oxygen sites in high-temperature superconducting cuprate compounds from measured nuclear quadr…
Electrodynamics of Bose-Einstein condensates in angular motion
L G Boussiakou, C R Bennett, M Babiker
A theory determining the electric and magnetic properties of vortex states in Bose-Einstein condensates (BECs) is presented. The principal ingredient is the Lagrangian of the syste…
Many-body GW Calculations of Ground-State Properties: Quasi-2D Electron Systems and van der Waals Forces
P. Garcia-Gonzalez, R. W. Godby
We present GW many-body results for ground-state properties of two simple but very distinct families of inhomogenous systems in which traditional implementations of density-functio…
Quantum theory of spontaneous emission by real moving atoms
L. G. Boussiakou, C. R. Bennett, M. Babiker
We outline the solution of a fundamental problem in quantum theory which has hitherto lacked a proper solution, namely finding the requisite quantum theoretical framework guarantee…
Enhancement of energy relaxation rates near metal-coated dielectric cylinders
G. D. Banyard, C. R. Bennett, M. Babiker
The electromagnetic modes and their field distributions are evaluated for a dielectric cylindrical structure embedded in another dielectric, with a thin metallic film at the cylind…