Probing Complex Quantum Dynamics through
Out-of-time-ordered Correlators

International Workshop
11 - 15 October 2021 

Scrambling, loss and possible retrieval of quantum information in many-body systems are important concepts presently studied in various setups. The workshop will discuss progress and future directions in the inter-related fields of information scrambling, complex quantum dynamics, chaos and criticality, by focusing on out-of-time-ordered correlators and related tools. Quantifying the time-growth of operators provides a unifying paradigm that favors the convergence of different physics communities to be represented at the workshop, comprising both theory and experiment. After a long period, we plan to resume the incomparable face-to-face exchange of scientific ideas and results at the MPI-PKS, but we will also offer virtual participation.

Topics include

  • Out-of-time-ordered correlators (OTOCs), spectral form factors, and related tools, as indicators for various types of quantum many-body dynamics
  • Relation of OTOCs to other measures of (in)stability and complexity growth
  • Experiments and experimental protocols
  • Generality of the bounds on chaos
  • Probing quantum chaos and holography
  • Semiclassical approaches to OTOCs
  • OTOCs, entanglement and quantum thermodynamics
  • OTOCs and the eigenstate thermalization hypothesis
  • Dynamical quantum phase transitions and many-body chaos near phase transitions

We plan for a hybrid workshop with a number of participants on-site and the others connected via video conference.
For accepted participants, online attendance will be possible in any case. The organizers will decide and inform about an option of on-site attendance at a later stage.

Invited speakers

A. Altland (DE)
S. Das Sarma (US)
A. del Campo (LU)
L. Ferreira dos Santos (US)
M. Gärttner (DE)
V. Galitski (US)
I. García-Mata (AR)
M. Heyl (DE)
C. Jarzynski (US)
M. Knap (DE)
J. Kurchan (FR)
A. Lakshminarayan (IN)
A. Lucas (US)
R. Moessner (DE)
T. Morita (JP)
H. Pastawski (AR)
X. Peng (CN)
S. Sachdev (US)
M. Srednicki (US)
S. Tomsovic (US)
M. Ueda (JP)
J.-D. Urbina (DE)
J. Verbaarschot (US)
C. von Keyserlingk (UK)
D. Wisniacki (AR)
N. Yunger Halpern (US)
W. Zurek (US)

Scientific Coordinators

Rodolfo A. Jalabert
(Université de Strasbourg, France)

Klaus Richter
(Universität Regensburg, Germany)


Katrin Lantsch
(Max Planck Institute for the Physics of Complex Systems, Dresden, Germany)


Applications received before 31st August 2021 are considered preferentially.
Applications are welcome and should be made by using the application form by using the online application form. The number of attendees is limited.
The registration fee for the international workshop is 140 Euro and should be paid by all on-site participants. (No fee for remote participation.) Costs for accommodation and meals for on-site participants will be covered by the Max Planck Institute.
Limited funding is available to partially cover travel expenses.


Scientific program structure

Monday, 11th October, 13:00 to Friday, 15th October, 13:00, scientific program