Talks

coffee, tea, cookies at 16:00 in the main hall
Monday 16:30-17:30
Seminar room 1+2
- monthly seminars -
Wednesday 15:30 - 17:00
Seminar room 4
- weekly seminars -
Monday 11:00-12:00
Room 1D1
Wednesday 16:30 - 17:30
Seminar room 1D1
Thursday 14:00-15:00
Seminar room 4

 

 

Vorträge in chronologischer Reihenfolge

25 Aug 2021
03:30 PM

IMPRS Online Seminar: Perfect and Giant Rectification in Strongly Interacting Spin Chains

Dario Poletti (Singapore University of Technology and Design)

Many-body quantum systems coupled to baths can display a variety of transport properties depending on the system and bath parameters. At the beginning of the presentation we will give an overview of some of the recent results on dissipatively boundary driven many-body quantum systems. We then focus our discussion on the emergence of current rectification in strongly interacting spin chains and show how this can lead to giant rectification and, for a particular setup, to perfect rectification beyond a critical value of the interaction. We then study how the rectification is affected by Hamiltonian and dissipative perturbations, showing in which scenarios one can still achieve giant rectification. References: G. Landi, D. Poletti, G. Schaller, arXiv:2104.14350 K.H. Lee et al., Phys. Rev. E 103, 052143 (2021) K.H. Lee et al, Entropy 22, 1311 (2020) V. Balachandran et al., Phys. Rev. Lett. 123, 020603 (2019) V. Balachandran et al., Phys. Rev. E 99, 032136 (2019) V. Balachandran et al., Phys. Rev. Lett. (2018)

VIRTUAL iCal Event
25 Aug 2021
04:45 PM

IMPRS Online Seminar: Non-Equilibrium Mode Competition and Controlled Two-Mode Emission in a Dye-Filled Photonic Cavity

Martina Vlaho (TU Berlin)

Two dimensional photon gases trapped in dye-filled microcavities can undergo thermalization and nearly ideal equilibrium Bose-Einstein condensation. However, they are inherently driven-dissipative systems that can exhibit an intricate interplay between the thermalizing influence of the environment given by the dye solution and the pump and loss processes driving the system out of equilibrium. First we investigate how this interplay influences the selection of macroscopically occupied cavity modes in a homogeneously pumped system. Depending on the parameter regime, this selection can be related either to lasing of (typically multiple) modes or to equilibrium-like photon condensation in the ground mode. When the system is driven by an off-centered pump beam, we show how a robust mechanism for controlled two-mode emission can be achieved by tailoring the transverse potential landscape for the photons.

VIRTUAL iCal Event
13 Sep 2021
04:30 PM

Colloquium talk: tba

VIRTUAL iCal Event
27 Sep 2021
04:30 PM

WS Colloquium: tba

Mark Jay Shlomchik (University of Pittsburgh)

VIRTUAL iCal Event
04 Oct 2021
04:30 PM

Colloquium talk: tba

VIRTUAL iCal Event
11 Oct 2021
04:30 PM

Colloquium: tba

Seminarroom 1+2 iCal Event
18 Oct 2021
04:30 PM

Coll.-Talk: tba

Jérôme Faist (ETH, Zürich)

Seminarroom 1+2 iCal Event
22 Oct 2021
02:00 PM

IMPRS Careers Talk: Powerpoint and Petrol - Working in Automotive Development Engineering as a Physicist

Max Buchholz (tba)

Seminarroom 4 iCal Event
25 Oct 2021
04:30 PM

Colloquium: tba

Prof. Dr. Christof Wetterich (Universität Heidelberg)

Seminarroom 1+2 iCal Event