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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Permanent link for all public and protected information:
Cold atomic gas in an optical lattice: effects of coupling internal atomic states
In recent years, systems of cold atoms in optical lattices have drawn great interest. Due to their purity and high controllability of system parameters, they provide a salient model for the study of correlated many-body systems. In the milestone experiment by Bloch and co-workers, the first atomic phase transition between a Mott insulator state to a superfluid state was demonstrated. Such a transition derives from an interplay between atom-atom interaction and atomic kinetic energies.
In this talk I first consider the ground state of an ideal coupled two-component gas of ultracold atoms in a 1-D optical lattice, either bosons or fermions. In particular, I will show that despite lack of atom-atom interaction a first order phase transition is possible, originating from a competition between internal and external atomic degrees of freedom. In the case of fermions it is argued that the phase transition has a topological character. Secondly, I will consider interacting bosons and outline how coupling of internal atomic states modifies the Mott-superfluid phase diagram.