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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Matthew Leifer


PIRSA:19010031  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 15
Speaker(s): Matthew Leifer
Abstract:

Copenhagenish interpretations and the Frauchiger-Renner argument

Date: 25/01/2019 - 10:15 am

PIRSA:19010030  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 14
Speaker(s): Matthew Leifer
Abstract:

Spontaneous Collapse Theories

Date: 24/01/2019 - 10:15 am

PIRSA:19010029  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 13
Speaker(s): Matthew Leifer
Abstract:

de Broglie-Bohm Theory

Date: 23/01/2019 - 10:15 am

PIRSA:19010028  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 12
Speaker(s): Matthew Leifer
Abstract:

Everett/Many Worlds 1

Date: 22/01/2019 - 10:15 am

PIRSA:19010027  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 11
Speaker(s): Matthew Leifer
Abstract:

The Classical Limit of Quantum Theory

Date: 21/01/2019 - 10:15 am

PIRSA:19010026  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 10
Speaker(s): Matthew Leifer
Abstract:

Bell's Theorem and the Colbeck-Renner theorem

Date: 18/01/2019 - 10:15 am

PIRSA:19010025  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 9
Speaker(s): Matthew Leifer
Abstract:

 The reality of the quantum state (PBR theorem and overlap bounds)

Date: 17/01/2019 - 10:15 am

PIRSA:19010024  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 8
Speaker(s): Matthew Leifer
Abstract:

Contextuality (Spekkens' contextuality, Kochen-Specker contextuality)

Date: 16/01/2019 - 10:15 am

PIRSA:19010023  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 7
Speaker(s): Matthew Leifer
Abstract:

Introduction to Ontological Models and Hardy's Excess Baggage Theorem

Date: 15/01/2019 - 10:15 am

PIRSA:19010022  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 6
Speaker(s): Matthew Leifer
Abstract:

Epistricted Theories (Spekkens' toy model)

Date: 14/01/2019 - 10:15 am

PIRSA:19010021  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 5
Speaker(s): Matthew Leifer
Abstract:

The realism vs. anti-realism debate in the philosophy of physics

Date: 11/01/2019 - 10:15 am

PIRSA:19010020  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 4
Speaker(s): Matthew Leifer
Abstract:

Generalized formalism continued

Date: 10/01/2019 - 10:15 am

PIRSA:19010019  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 3
Speaker(s): Matthew Leifer
Abstract:

Generalized formalism for quantum theory (density operators, POVMs, CPT maps)

Date: 09/01/2019 - 10:15 am

PIRSA:19010018  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 2
Speaker(s): Matthew Leifer
Abstract:

No cloning, the von Neumann measurement model, Orthodoxy and the measurement problem, EPR-Bohm

Date: 08/01/2019 - 10:15 am

PIRSA:19010017  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Foundations of Quantum Mechanics - Lecture 1
Speaker(s): Matthew Leifer
Abstract:

Introduction.  Basic Phenomenology of quantum theory with interferometers (interference, Elitzur-Vaidman bomb).  Postulates of quantum theory.

Date: 07/01/2019 - 10:15 am

PIRSA:18080032  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Measures of Preparation Contextuality
Speaker(s): Matthew Leifer
Abstract: In a large medical trial, if one obtained a ridiculously small p-value like 10^-12, one would typically move from a plain hypothesis test to trying to estimate the parameters of the effect. For example, one might try to estimate the optimal dosage of a drug or the optimal length of a course of trea... read more
Date: 01/08/2018 - 2:30 pm

PIRSA:17070041  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Aharonov vs. Spekkens round II: Contextuality in Pre- and Post-Selection Paradoxes
Speaker(s): Matthew Leifer
Abstract:
Date: 25/07/2017 - 11:30 am

PIRSA:17010046  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 14
Speaker(s): Matthew Leifer
Abstract:

Introduction to Generalized Probabilistic Theories

Date: 20/01/2017 - 11:30 am

PIRSA:17010045  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 13
Speaker(s): Matthew Leifer
Abstract:

Copenhagen-style interpretations and the Frauchiger-Renner theorem

Date: 19/01/2017 - 11:30 am

PIRSA:17010044  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 12
Speaker(s): Matthew Leifer
Abstract:

de Broglie-Bohm theory and spontaneous collapse theories

Date: 18/01/2017 - 11:30 am

PIRSA:17010043  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 11
Speaker(s): Matthew Leifer
Abstract:

Everett/Many Worlds

Date: 17/01/2017 - 11:30 am

PIRSA:17010042  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 10
Speaker(s): Matthew Leifer
Abstract:

Classical Limit 2 (Guest Lecture with Joseph Emerson)

Date: 16/01/2017 - 11:30 am

PIRSA:17010041  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 9
Speaker(s): Matthew Leifer
Abstract:

Classical Limit 1 (Guest Lecture with Jess Riedel)

Date: 13/01/2017 - 11:30 am

PIRSA:17010040  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 8
Speaker(s): Matthew Leifer
Abstract:

Bell's theorem and the Colbeck-Renner theorem

Date: 12/01/2017 - 11:30 am

PIRSA:17010039  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 7
Speaker(s): Matthew Leifer
Abstract:

Reality of the quantum state (PBR theorem, overlap bounds, maybe some others if there is time)

Date: 11/01/2017 - 11:30 am

PIRSA:17010038  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 6
Speaker(s): Matthew Leifer
Abstract:

Contextuality (Spekkens' contextuality, Kochen-Specker contextuality, contextuality inequalities)

Date: 10/01/2017 - 11:30 am

PIRSA:17010037  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 5
Speaker(s): Matthew Leifer
Abstract:

Introduction to Ontological Models (Formalism, Examples, Spekkens' toy theory, maybe excess baggage theorem)

Date: 09/01/2017 - 11:30 am

PIRSA:17010036  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 4
Speaker(s): Matthew Leifer
Abstract:

Generalized formalism for quantum theory continued

Date: 06/01/2017 - 11:30 am

PIRSA:17010035  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 3
Speaker(s): Matthew Leifer
Abstract:

Generalized Formalism for quantum theory (density ops, CP-maps, POVMs, Lindblad eqn.)

Date: 05/01/2017 - 11:30 am

PIRSA:17010034  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 2
Speaker(s): Matthew Leifer
Abstract:

Basic Phenomenology: Interference, Mach-Zehnder, Elitzur-Vaidman Bomb, EPR-Bohm, No-Cloning

Date: 04/01/2017 - 11:30 am

PIRSA:17010033  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2016/2017 - Foundations of Quantum Mechanics - Lecture 1
Speaker(s): Matthew Leifer
Abstract:

What is the question? Quantum theory as an operational theory.

Date: 03/01/2017 - 11:30 am

PIRSA:16060059  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Does time-symmetry in quantum theory imply retrocausality?
Speaker(s): Matthew Leifer
Abstract: The two-state vector formalism of Aharonov and collaborators introduces a backwards-evolving state in order to restore time symmetry to quantum measurement theory. The question then arises, does any time-symmetric account of quantum theory necessarily involve retrocausality (influences that travel ... read more
Date: 22/06/2016 - 4:00 pm

PIRSA:16060104  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Everything you wanted to know about the reality of the quantum state, but were afraid to ask Matt Pusey
Speaker(s): Matthew Leifer
Abstract: In this talk, I will outline the current state of the art in the study of the reality of the quantum state.  The main theme will be that, although you cannot derive the reality of the quantum state in an ontological model without additional assumptions, you can place constraints on the amou... read more
Date: 17/06/2016 - 2:00 pm

PIRSA:15060036  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Aharonov meets Spekkens: What do quantum paradoxes tell us about the nature of reality?
Speaker(s): Matthew Leifer
Abstract:
Date: 24/06/2015 - 2:45 pm

PIRSA:14020145  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Psi-epistemic models are exponentially bad at explaining the distinguishability of quantum states
Speaker(s): Matthew Leifer
Abstract: The status of the quantum state is perhaps the most controversial issue in the foundations of quantum theory. Is it an epistemic state (representing knowledge, information, or belief) or an ontic state (a direct reflection of reality)? In the ontological models framework, quantum states correspond t... read more
Date: 18/02/2014 - 3:30 pm

PIRSA:11050023  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum Conditional States, Bayes Rule and Quantum Pooling
Speaker(s): Matthew Leifer
Abstract: Quantum theory can be thought of a noncommutative generalization of classical probability and, from this perspective, it is puzzling that no quantum generalization of conditional probability is in widespread use. In this talk, I discuss one such generalization and show how it can unify the descripti... read more
Date: 17/05/2011 - 4:00 pm

PIRSA:07060033  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Separations of generalized probabilistic theories via their information processing capabilities
Speaker(s): Matthew Leifer
Abstract:
Date: 04/06/2007 - 11:30 am

PIRSA:06060063  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum Causal Networks
Speaker(s): Matthew Leifer
Abstract: In this talk, I will outline a quantum generalization of causal networks that are used to analyze complex probabilistic inference problems involving large numbers of correlated random variables. I will review the framework of classical causal networks and the graph theoretical constructions that are... read more
Date: 28/06/2006 - 4:00 pm

PIRSA:05070102  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Nondeterministic testing of sequential quantum logic propositions on a quantum computer
Speaker(s): Matthew Leifer
Abstract:
Date: 19/07/2005 - 4:00 pm

PIRSA:05030122  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Interpretation of Quantum Theory: Lecture 22
Speaker(s): Matthew Leifer
Abstract:
Date: 24/03/2005 - 2:15 pm

PIRSA:04110008  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Pre- and Post-Selection Paradoxes, Measurement-Disturbance and Contextuality in Quantum Mechanics
Speaker(s): Matthew Leifer
Abstract:
Date: 10/11/2004 - 4:00 pm
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