Talks

10069 - 10080 of 16754 Results

Quantum Observables as Real-valued Functions and Quantum Probability

September 10, 2013

PIRSA:13090068

Quantum Foundations
From dlogs to dilogs

Arthur Lipstein Durham University

September 10, 2013

PIRSA:13090049

Quantum Fields and Strings
13/14 PSI - Quantum Theory - Lecture 2

Joseph Emerson Institute for Quantum Computing (IQC)

September 10, 2013

PIRSA:13090031
13/14 PSI - Relativity - Lecture 2

Neil Turok University of Edinburgh

September 10, 2013

PIRSA:13090012
13/14 PSI - Quantum Theory - Lecture 1

Joseph Emerson Institute for Quantum Computing (IQC)

September 09, 2013

PIRSA:13090030
13/14 PSI - Relativity - Lecture 1

Neil Turok University of Edinburgh

September 09, 2013

PIRSA:13090011
The local Callan-Symanzik equation: structure and applications

Boaz Keren-Zur L'Ecole Polytechnique Federale de Lausanne (EPFL)

September 06, 2013

PIRSA:13090067

Particle Physics
13/14 PSI - QFT 0 - Lecture 4

Freddy Cachazo Perimeter Institute for Theoretical Physics

September 06, 2013

PIRSA:13090059
13/14 PSI - Computational Methods in Physics - Lecture 4

Erik Schnetter Perimeter Institute for Theoretical Physics

September 06, 2013

PIRSA:13090055
13/14 PSI - QFT 0 - Lecture 3

Freddy Cachazo Perimeter Institute for Theoretical Physics

September 05, 2013

PIRSA:13090058
13/14 PSI - Computational Methods in Physics - Lecture 3

Erik Schnetter Perimeter Institute for Theoretical Physics

September 05, 2013

PIRSA:13090054
13/14 PSI - QFT 0 - Lecture 2

Freddy Cachazo Perimeter Institute for Theoretical Physics

September 04, 2013

PIRSA:13090057

Quantum Observables as Real-valued Functions and Quantum Probability

September 10, 2013

PIRSA:13090068

Quantum Foundations

Quantum observables are commonly described by self-adjoint operators on a Hilbert space H. I will show that one can equivalently describe observables by real-valued functions on the set P(H) of projections, which we call q-observable functions. If one regards a quantum observable as a random variable, the corresponding q-observable function can be understood as a quantum quantile function, generalising the classical notion. I will briefly sketch how q-observable functions relate to the topos approach to quantum theory and the process called daseinisation. The topos approach provides a generalised state space for quantum systems that serves as a joint sample space for all quantum observables. This is joint work with Barry Dewitt.
From dlogs to dilogs

Arthur Lipstein Durham University

September 10, 2013

PIRSA:13090049

Quantum Fields and Strings

In this talk, I will describe a new form of hidden simplicity in the planar scattering amplitudes of N=4 super-Yang-Mills theory, notably that the loop integrands can be expressed in dlog form. I will explain how this form arises geometrically from computing the scattering amplitudes using a holomorphic Wilson loop in twistor space. I will also describe a systematic method for evaluating such integrals and use it to obtain a new formula for the 1-loop MHV amplitude. These techniques can be extended to higher loop amplitudes and may lead to a simple and efficient method for computing scattering amplitudes more generally.
13/14 PSI - Quantum Theory - Lecture 2

Joseph Emerson Institute for Quantum Computing (IQC)

September 10, 2013

PIRSA:13090031
13/14 PSI - Relativity - Lecture 2

Neil Turok University of Edinburgh

September 10, 2013

PIRSA:13090012
13/14 PSI - Quantum Theory - Lecture 1

Joseph Emerson Institute for Quantum Computing (IQC)

September 09, 2013

PIRSA:13090030
13/14 PSI - Relativity - Lecture 1

Neil Turok University of Edinburgh

September 09, 2013

PIRSA:13090011
The local Callan-Symanzik equation: structure and applications

Boaz Keren-Zur L'Ecole Polytechnique Federale de Lausanne (EPFL)

September 06, 2013

PIRSA:13090067

Particle Physics

The local Callan-Symanzik equation describes the response of a quantum field theory to local scale transformations in the presence of background sources. The consistency conditions associated with this anomalous equation can be used to derive powerful constraints on RG flows. We will discuss various aspects of the equation and present new results regarding the structure of the anomaly. We then use the equation to write correlation functions of the trace of the energy-momentum tensor off-criticality.
13/14 PSI - QFT 0 - Lecture 4

Freddy Cachazo Perimeter Institute for Theoretical Physics

September 06, 2013

PIRSA:13090059
13/14 PSI - Computational Methods in Physics - Lecture 4

Erik Schnetter Perimeter Institute for Theoretical Physics

September 06, 2013

PIRSA:13090055
13/14 PSI - QFT 0 - Lecture 3

Freddy Cachazo Perimeter Institute for Theoretical Physics

September 05, 2013

PIRSA:13090058
13/14 PSI - Computational Methods in Physics - Lecture 3

Erik Schnetter Perimeter Institute for Theoretical Physics

September 05, 2013

PIRSA:13090054
13/14 PSI - QFT 0 - Lecture 2

Freddy Cachazo Perimeter Institute for Theoretical Physics

September 04, 2013

PIRSA:13090057

Title	Date	Collection	Type	Info
Quantum Observables as Real-valued Functions and Quantum Probability	2013‑09‑10	Quantum Foundations	Scientific Series	View details
From dlogs to dilogs	2013‑09‑10	Quantum Fields and Strings	Scientific Series	View details
13/14 PSI - Quantum Theory - Lecture 2	2013‑09‑10	13/14 PSI - Quantum Theory	Course	View details
13/14 PSI - Relativity - Lecture 2	2013‑09‑10	13/14 PSI - Relativity	Course	View details
13/14 PSI - Quantum Theory - Lecture 1	2013‑09‑09	13/14 PSI - Quantum Theory	Course	View details
13/14 PSI - Relativity - Lecture 1	2013‑09‑09	13/14 PSI - Relativity	Course	View details
The local Callan-Symanzik equation: structure and applications	2013‑09‑06	Particle Physics	Scientific Series	View details
13/14 PSI - QFT 0 - Lecture 4	2013‑09‑06	13/14 PSI - Front End	Course	View details
13/14 PSI - Computational Methods in Physics - Lecture 4	2013‑09‑06	13/14 PSI - Front End	Course	View details
13/14 PSI - QFT 0 - Lecture 3	2013‑09‑05	13/14 PSI - Front End	Course	View details
13/14 PSI - Computational Methods in Physics - Lecture 3	2013‑09‑05	13/14 PSI - Front End	Course	View details
13/14 PSI - QFT 0 - Lecture 2	2013‑09‑04	13/14 PSI - Front End	Course	View details

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