[PhilPhys] Lisbon Philosophy of Physics Seminars: Olimpia Lombardi (June 7 on Zoom)

[Andrea Oldofredi]

Dear List Members,

On Wednesday June 7 Olimpia Lombardi (CONICET – Universidad de Buenos
Aires) will
give a talk at the Lisbon Philosophy of Physics Seminars titled "*Introducing
the Modal-Hamiltonian Interpretation of quantum **mechanics*" (abstract
below).

These events are organized in the context of the activities of the LanCog
Research Group <https://cful.letras.ulisboa.pt/lancog/> at the Centre of
Philosophy of the University of Lisbon, and they will focus on the
foundations of quantum and spacetime physics.

The meeting will be held on Zoom (17:00-19:00 CEST). If you have not
registered yet, you can do so here
<https://docs.google.com/forms/d/1pe9-CUZwKFA_uS0j-wD7bRQatIO-SdzxBqKlmkM6XOY/edit?usp=drive_web>
.

You can address any question to Andrea Oldofredi (
aoldofredi at letras.ulisboa.pt).

ABSTRACT:

The Modal-Hamiltonian Interpretation (MHI) of quantum mechanics belongs to
the modal family: it is a realist, non-collapse interpretation, according
to which the quantum state describes the possible properties of a system
but not its actual properties. In particular, the Hamiltonian of the closed
quantum system plays a decisive role in the rule that selects the
definite-valued observables of the system. In this presentation I will
focus on three points:
a) The MHI is effective in solving the measurement problem, both in its
ideal and its non-ideal versions. It accounts for well-known physical
situations by conceiving measurement as a process that breaks the symmetry
of the Hamiltonian and, thus, turns an otherwise non definite-valued
observable into a definite-valued and empirically accessible observable.
b) The MHI can be reformulated under an explicitly Galilean-invariant form
in terms of the Casimir operators of the Galilean group, leading to results
that agree with usual assumptions in the practice of physics. Then, any
realist interpretation that intends to preserve the Galilean invariance of
the set of definite-valued observables cannot depart too far from the MHI.
c) According to the MHI, quantum systems are not individuals, but bundles
of the type- properties represented by the observables of the system. In
this ontology of properties, indistinguishability is no longer a
relationship between individual particles, but an internal symmetry of a
system as a whole, and the symmetry of states is not the result of an ad
hoc symmetrization, but is due to ontological reasons, that is, to the very
structure of the ontology itself.

Best regards,

Andrea Oldofredi
----------

Dr. Andrea Oldofredi

Postdoc FCT

Internet Resources:
https://unil.academia.edu/AndreaOldofredi
https://www.researchgate.net/profile/Andrea_Oldofredi

Mailing Address:
University of Lisbon
Centre of Philosophy
Alameda da Universidade, 1600-214, Lisbon
Portugal
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