Seminars & literature chats of the group “Nonequilibrium Many-Body Systems”

every working Monday, 10:30, Von-Seckendorff-Platz 1, Room 1.16

October 11

Jamal Berakdar

seminar or chat

October 18

Levan Chotorlishvili

seminar or chat

October 25

Hans Peter Oepen (guest speaker; Institute of Applied Physics, Microstructure Advanced Research Center, University Hamburg)

Talk on "Magnetic characterization of single nanostructures"

November 1

Guillermo Quinteiro (guest speaker; Universidad de Buenos Aires, Argentina)

Talk

November 8

Andrey Moskalenko

seminar or chat

November 15

Armin Scrinzi (guest speaker; Arnold Sommerfeld Center, LMU Munich)

Talk on “MCTDHF&B - dynamics of strongly driven few-particle systems”

See Abstract below the table

November 22

Berlinson  Dominikus Napitu

seminar or chat

November 29

Eleftherios Goulielmakis (guest speaker;

Max-Planck Institute of Quantum Optics)

Talk on “Attosecond chronoscopy: Tracking the motion of electrons in atoms and complex systems”

December 6

Zhen Gang Zhu

seminar or chat

December 13

Chenglong Jia

seminar or chat

January 10

Anita Thakur

seminar or chat

January 17

Koray Köksal

seminar or chat

January 24

Alexander Sukhov

seminar or chat

January 31

Yaroslav Pavlyukh

seminar or chat

Abstract of the talk of Armin Scrinzi:

Fully controlled intense few-cycle laser pulses and precisely synchronized sub-femtosecond

XUV pulses are new experimental tools for observing electronic dynamics on the sub-femtosecond

time scale. Employing these tools in a variety of experimental setups, time-resolved observations

of atomic ionization, shake-processes, and ultra-fast rearrangement of molecules have

have become possible. A new generation of experiments includes solids and solid surfaces.

All these experiments involve the exposure of the systems to non-perturbatively strong laser

fields and they require a reliable understanding of the impact of the laser on the studied systems.

 

Our development of the Multi-Configuration Time-Dependent Hartree-Fock (MCTDH-F) method and

its implementation for large-scale parallel computation is motivated by this need to

describe few-electron systems in the presence of strong fields. In my presentation I will review

the experimental motivation, give a basic description of the method, highlight key points of its

implementation for parallel computing, and show results on harmonic generation and ionization of

atomic and molecular models by few-cycle laser pulses.

 

The approach was extended to bosonic systems (MCTDH-B) and an optimal control

scheme was implemented. Application to controlling of fragmentation and number squeezing

during splitting of a Bose-Einstein condensate will be demonstrated.