Reminder: Invitation to a Joint ICTP-SISSA Webinar Colloquium by Prof. Shivaji Sondhi on "Digital Herd Immunity and Covid-19" on Wednesday 13 May 2020 at 16:00 hrs.
director at ictp.it
Tue May 12 09:12:06 CEST 2020
You are most cordially invited to the next Joint ICTP-SISSA Webinar
Colloquium by Professor Shivaji Sondhi on "Digital Herd Immunity and
Covid-19" on Wednesday 13 May 2020 at 16:00 hrs.
*Pre-registration* is required at the following url:
After registering, you will receive a confirmation email containing
information about joining the webinar.
*Biosketch: *Prof. Shivaji Sondhi is professor of physics at Princeton
University, USA. His research has focused on materials in which the
interactions among the electrons are important, even for a qualitative
understanding of their behavior. This is in contrast to the textbook
examples of metals and insulators, whose behavior is largely explicable
in terms of independent electrons.The particular systems he has worked
on are the two-dimensional electron gases that are realized in
semiconductor heterostructures, superconducting fullerides, frustrated
magnetic systems and the cuprate superconductors. Current interests
include: "Quantum Hall" systems and searching for possible new phases in
the Quantum Hall regime, and the more theoretical question of
constructing "better" field theories of the high-field dynamics; as well
as continuous quantum phase transitions.
*Abstract: *A population can be immune to epidemics even if not all of
its individual members are immune to the disease, just as long as
sufficiently many are immune -- this is the traditional notion of herd
immunity. In the smartphone era a population can be immune to epidemics
even if not a single one of its members is immune to the disease -- a
notion we propose to call "digital herd immunity", which is similarly an
emergent characteristic of the population. This immunity arises because
contact-tracing protocols based on smartphone capabilities can lead to
highly efficient quarantining of infected population members and thus
the extinguishing of nascent epidemics. When the disease characteristics
are favorable and smartphone usage is high enough, the population is in
this immune phase. As usage decreases there is a novel "contact tracing"
phase transition to an epidemic phase. We present and study a simple
branching-process model for COVID-19 and show that digital immunity is
possible regardless of the proportion of non-symptomatic transmission.
We believe this is a promising strategy for dealing with COVID-19 in
The talk (approx. 40 minutes) will be followed by a question/answer session.
For info, please check the following link: http://indico.ictp.it/event/9361/
Should you not be able to join the Webinar, the Colloquium is also
available in live streaming*.
We look forward to seeing you online!
With best regards,
Office of the Director, ICTP
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