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:
Spontaneous reversal of irreversible processes in a many-body Hamiltonian
(FC, Physics Department, University of Rome "La Sapienza")
An autonomous Hamiltonian model will be presented and discussed. It is
a modified version of the most-general translation-invariant N-body problem (N
is arbitrary, as well as the dimensions of the ambient space). It features an
arbitrary real parameter T and possesses the following two properties, whose
coexistence is clearly remarkable. First: all the solutions of this model are
completely periodic (i. e., periodic in all degrees of freedom: positions
and velocities of the N particles), with the (arbitrarily assigned) period T.
Second: the generic solution of this model (starting from generic initial data)
has a behavior that essentially coincides with that of the original (standard)
many-body problem (with arbitrary interparticle forces), for times much smaller
than T. Hence over such (finite but arbitrarily large) times the dynamics
implied by our model generally entails the standard statistical dynamics and
thermodynamics, entailing the thermodynamic irreversibility of physical
processes; yet its exact evolution is competely periodic...This is joint work
with François Leyvraz.