In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
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The hallmark of classical chaos is an exponential divergence of initially infinitesimally close trajectories - a phenomenon colloquially known as the “butterfly effect.” This exponential runaway of chaotic trajectories is quantitatively characterized by the Lyapunov exponent. Of great interest has been to understand how/if the butterfly effect and Lyapunov exponents generalize to quantum physics, where the notion of a trajectory does not exist. In this talk, I will discuss recent progress in resolving this fundamental challenge that is based on a newly introduced measure of quantum chaoticity – the out-of-time-ordered correlator or “Lyapunovian” – which enables to make a non-trivial connection between classical and quantum chaos in a variety of systems: from single-particle chaotic billiards to disordered condensed matter systems to models of black holes. I will illustrate the use of the Lyapunovian on a few standard examples that will be used to elucidate the nature of quantum chaotic dynamics, including suppression of the butterfly effect in quantum systems. I will conclude by formulating an intriguing conjecture connecting quasiclassical chaotic dynamics and statistics of energy levels in interacting many-body quantum systems.