Prof. Nimrod Moiseyev Technion - Israel Institute of Technology
Wednesday, May 4, 11:00 am
Pfizer Auditorium Hall | 12 Oxford Mallinckrodt B23
“Non-Hermitian Quantum Mechanics (NHQM) theory for cold molecular
collisions” In this talk I will described briefly the cold collision
experiments conducted in Weizmann that motivated this work. Then I will
describe the need for NHQM to study the dynamics in scattering experiments
in which electrons and the nuclei motion are strongly coupled. In
particular I will describe how NHQM enables us to use the Born Oppenheimer
approximation for ionizing states that are embedded in the continuum part
of the electronic spectra. A new ab-initio method will be presented that
enables us the use of standard electronic molecular structure packages for
calculating complex potential energy surfaces (CPES). These CPES are used
for calculating the cross sections for cold collisions of an excited He (in
a triplet spin state) with a (para/ortho) Hydrogen molecule. The products
are He in its ground singlet electronic state, molecular hydrogen cation
and a free electron. The agreement of our results (obtained from ab-initio
non-perturbative calculations) with experiment is remarkable. Quantum
Sciences Seminars (in Chemistry) are jointly sponsored with Harvard
Department of Chemistry and Chemical Biology and the HarvardSmithsonian
Center for Astrophysics. ITAMP sponsors talks and presentations on
forefront AMO/Condensed Matter Physics from notable Scientists, Researchers
and Professors. Information about speakers and ongoing dates can be found
on the ITAMP Google Calendar. Go to:
http://www.cfa.harvard.edu/itamp/gcalendar.html *ITAMP is funded by a grant
from the National Science Foundation.
--
*Siria Serrano*
*Faculty Assistant*
*Aspuru-Guzik Group*
*Harvard University **Department of Chemistry and Chemical Biology*
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