# PHY491H1/1491H Current Interpretations of Quantum Mechanics

## Official description

Review of conventional, textbook quantum mechanics. Formal measurement theory and wave function collapse; quantum states and nonseparability, violation of local causality; Bell theorems; quantum tricks; decoherence and the emergence of classical behaviour. Hidden variables; deBroglie-Bohm theory and generalizations; many-worlds interpretation and other theories of beables. Consistent histories approach of Omnes and Gell-Mann and Hartle; nature of True and Reliable statements.

Prerequisite
PHY456H1
Co-requisite
n.a.
Exclusion
n.a.
Recommended preparation
n.a.
Textbook
                            n/a some notes will be distributed.

BR=5
Distribution requirement
DR=SCI

Different interpretations of quantum mechanics are presented and discussed, comparing and contrasting the various approaches to understanding the formalism of the theory.  We begin with “textbook quantum mechanics” and then discuss the Copenhagen view, operationalist quantum mechanics, hidden variable theories, Bohm-deBroglie theory, consistent histories, relational quantum mechanics, relative state approaches (many minds and many worlds), Qbism, the interactional interpretation, and collapse theories.

course title
PHY491H1/1491H
session
winter
year of study
4th year
time and location
24L/24T: LEC0101, LEC9101: M3-5/W3-5, On line Synchronous The lectures will be run online via Blackboard Collaborate. Students can ask questions during the lectures by writing in the “chat” window or by using the “microphone.” The course involves a significant amount of discussion in the lecture session, and so lectures will not be recorded.
instructor

#### Delivery Methods

In Person

A course is considered In Person if it requires attendance at a specific location and time for some or all course activities.*.

* Subject to adjustments imposed by public health requirements for physical distancing.

Online - Synchronous
A course is considered Online Synchronous if online attendance is expected at a specific time for some or all course activities, and attendance at a specific location is not expected for any activities or exams.
Asynchronous
A course is considered Asynchronous if it has no requirement for attendance at a specific time or location for any activities or exams.