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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Université Lyon 1,
21 av. Claude Bernard,
In this talk, I will review the physics of excitations obeying a Dirac equation in various crystals such as graphene (honeycomb lattice) or artificial crystals made, for example, of cold atoms in optical lattices or microwaves in arrays of dielectric resonators. Dirac excitations usually appear in the vicinity of contact points between two energy bands. These contact points can be described as topological defects and as such they carry a topological charge, often related to a Berry phase, that describes there annihilation/creation properties. We will show how this behavior has been recently probed in various physical realizations.
Work done in collaboration with Gilles Montambaux, Frédéric Piéchon and Lih-King Lim.