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- Yuri P Kalmykov, William T. Coffey, D. S. F. Crothers, Sergey V Titov
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2004

It is shown how the Debye rotational diffusion model of dielectric relaxation of polar molecules (which may be described in microscopic fashion as the diffusion limit of a discrete time random walkâ€¦ (More)

- S. Francesca C. Shearer, R. T. Pedlow, D. S. F. Crothers
- ICCSA
- 2004

- J. Bradley, S. Francesca C. Shearer, R. T. Pedlow, D. S. F. Crothers
- Computer Physics Communications
- 2005

- Alexander Z Devdariani, Elena Bichoutskaia, +5 authors Peroni Angelo
- 2002

A formula was obtained that describes asymptotically forbidden quasimolecular optical transitions in the frame of the semiclassical approach. It is particularly relevant for the weak extrema in theâ€¦ (More)

Coupled second-order quantal wave equations are considered for a non-crossing atomic collision. They are reduced to exactly equivalent first-order equations. The semiclassical approximationâ€¦ (More)

- Dmitriy A. Garanin, Ejiwoke Kennedy, D. S. F. Crothers, William T. Coffey
- Physical review. E, Statistical physics, plasmasâ€¦
- 1999

Classical escape rates of uniaxial spin systems are characterized by a prefactor differing from and much smaller than that of the particle problem, since the maximum of the spin energy is attainedâ€¦ (More)

- P M DÃ©jardin, D. S. F. Crothers, William T. Coffey, Daniel J. McCarthy
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2001

It is shown that the Mel'nikov-Meshkov formalism for bridging the very low damping (VLD) and intermediate-to-high damping (IHD) Kramers escape rates as a function of the dissipation parameter forâ€¦ (More)

- William T. Coffey, D. S. F. Crothers, Yuri P Kalmykov, P M DÃ©jardin
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2005

It is shown how the existing theory of the dynamic Kerr effect and nonlinear dielectric relaxation based on the noninertial Brownian rotation of noninteracting rigid dipolar particles may beâ€¦ (More)

The theory of collisions between two atomic systems goes back to the early days of quantum mechanics (Mott 1931; Teller 1937; Landau & Teller 1936) and the basic 1930s models of state interaction areâ€¦ (More)

- HKachkachi, William T. Coffey, +4 authors Elisabeth Tronc
- 2008

The effect of an applied magnetic field on the temperature at the maximum of the ZFC magnetization, MZF C , is studied using the recently obtained analytic results of Coffey et al. (Phys. Rev. Lett.,â€¦ (More)