Thursday December 6th
Ludwigstr. 31 <http://goo.gl/maps/8Q2IJ> /II room 225
Time: 4 to 6 p.m. Talk: Giovanni Valente
(Pittsburgh)
*Local Disentanglement in Relativistic Quantum Field Theory*
* *
ABSTRACT
In their paper on "Entanglement and Open Systems in Algebraic Quantum Field
Theory", Clifton and Halvorson (2001) raised the question whether
entanglement between quantum systems can be destroyed by means of local
operations and claimed that, contrary to non-relativistic quantum
mechanics, this can never be the case in relativistic quantum field theory.
In this talk I will argue that Clifton and Halvorson's no-go result applies
only to a special kind of local operations, and thereby I will reject their
conclusion. In fact, after providing sufficient conditions for local
disentanglement to be achieved, I will show that, if the split property
holds, there exists a class of local operations which disentangle all
states across any pair of spacelike separated quantum field systems.
----
Karim Thébault, MCMP<http://www.mcmp.philosophie.uni-muenchen.de/index.html>
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*November 30th:*
Ludwigstr. 31 <http://goo.gl/maps/8Q2IJ> /II room 225****
Time: 12 to 2 p.m. Talk: Richard Dawid/Vienna
*Evidence for the Higgs Particle and the Look Elsewhere Effect*
* *
Last summer CERN reported the observation of a scalar particle that is strongly
believed to be the long expected Higgs particle. One specific aspect of the
process of data collection and analysis that led up to this discovery is of
specific philosophical interest. In the early months of 2012, when the
collected data was already significant but technically did not yet amount
to an observation of a new particle (i. e. did not yet constitute a 5 sigma
effect), an interesting debate on the most adequate characterisation of the
status of the available data arose among particle physicists. That debate
circled around the role of the so called ‘look elsewhere effect’ and
provided an interesting perspective on the relation between theoretical and
empirical arguments in high energy physics. The talk will analyse this
debate and draw some conclusions regarding the epistemic status of claims
in high energy physics.
----
Karim Thébault, MCMP<http://www.mcmp.philosophie.uni-muenchen.de/index.html>