News

Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize- for pioneering work in ultrafast lasers
MUST2022 Conference- a great success!
New scientific highlights- by MUST PIs Wörner, Chergui, and Richardson
FELs of Europe prize for Jeremy Rouxel- “Development or innovative use of advanced instrumentation in the field of FELs”
Ruth Signorell wins Doron prizefor pioneering contributions to the field of fundamental aerosol science
New FAST-Fellow Uwe Thumm at ETH- lectures on Topics in Femto- and Attosecond Science
International Day of Women and Girls in Science- SSPh asked female scientists about their experiences
New scientific highlight- by MUST PIs Milne, Standfuss and Schertler
EU XFEL Young Scientist Award for Camila Bacellar,beamline scientist and group leader of the Alvra endstation at SwissFEL
Prizes for Giulia Mancini and Rebeca Gomez CastilloICO/IUPAP Young Scientist Prize in Optics & Ernst Haber 2021
Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List- for the development of asymmetric organocatalysis
NCCR MUST at Scientifica 2021- Lightning, organic solar cells, and virtual molecules

“On the fly” semiclassical calculation of nonadiabatic spectra of pyrazine

Date Fr, 14.02.2014 - Fr, 14.02.2014
Time 14:00
Speaker Tomas Zimmermann, Laboratory of theoretical physical chemistry, EPFL
Location ETH Zurich, Hönggerberg Campus, HIT F-12
Program In the first step, the multiple-surface dephasing representation (MSDR) is generalized to calculations of nonadiabatic electronic spectra. The resulting, rather crude, yet very efficient semiclassical method includes quantum effects through interference of mixed quantum-classical trajectories and through quantum treatment of the electronic degree of freedom. It requires very little computational effort in addition to the standard fewest switches surface hopping or Ehrenfest mean field dynamics and is very easy to implement. The method is tested by computing the absorption and time-resolved stimulated emission (TRSE) spectra of pyrazine using the four-dimensional three-surface model which allows for comparison with the numerically exact quantum result. Finally, the MSDR is combined “on the fly” with the SA-4-CASSCF(10,8)/6-31G* method to compute fully dimensional nonadiabatic spectra of pyrazine without approximations inherent to analytical models. The results for electronic absorption spectrum are compared with experiment.

Download (75 KB)
(75 KB)
Link www.opteth.ethz.ch
NCCR MUST Office : ETHZ IQE/ULP-HPT H3 | Auguste-Piccard-Hof 1 | 8093 Zurich | E-Mail
The National Centres of Competence in Research (NCCR) are a research instrument of the Swiss National Science Foundation