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.
Permanent link for public information only:
Permanent link for all public and protected information:
COLLOQUIUM: Holography, quantum gravity and black holes
Jan de Boer
(University of Amsterdam)
Oskar Klein Auditorium ()
Oskar Klein Auditorium
At a fundamental level, nature is inevitably described by a quantum theory
of gravity. A crucial insight from the 1990s was that the fundamental degrees of quantum
gravity are very strange and highly non-local, and can all be imagined to live on a screen
which has one dimension less than space-time itself, hence the name holographic screen.
This notion of holography, which has been made completely quantitative in the context of
string theory, has dramatically altered our understanding of quantum gravity. I will review
this idea and its concrete implementation, and describe how it implies that space and time
must be emergent phenomena. I will also summarize our present understanding of quantum
black holes, and sketch some recent attempts to use black holes to understand
things as diverse as the quark-gluon plasma and high-Tc superconductors.