--------------------------------------------------------------------
   COLLOQUIUM OF THE LABORATORY FOR COMPUTER DESIGN OF MATERIALS
                   School of Computational Sciences
                           (CSI 898-Sec 001)
--------------------------------------------------------------------
      Numerical results for vibrons in solid hydrogen at 
             high pressure and high temperature

                      Joseph Feldman
        Center for Computational Materials Science, 
        Naval Research Laboratory, Washington D. C.

We will primarily discuss the van-Kranendonk theory
of Raman intensity from vibronic states (intramolecular vibrations) 
in solid hydrogen and how that theory may impact the interpretation 
of experiments in the high-pressure high-temperature regime.Estimates 
have been made for the phonon renormalization of vibron-hopping 
parameters of the vibronic Hamiltonian. These estimates will be
discussed in detail and presently only simplified models for 
the pair distribution function are used in this work. Collaborative
research will also be discussed involving hybrid path-integral 
molecular-dynamics methods and empirical intermolecular potentials 
for describing positions of molecules in the fluid state.

                     February 20, 4:30 pm
            Room 206, Science & Tech. I, Fairfax Campus

Refreshments will be served at 4:15 PM.
----------------------------------------------------------------------
Find the schedule at http://www.scs.gmu.edu/lcdm/seminar/schedule.html
--------------------------------------------------------------------