Talks

9769 - 9780 of 18100 Results

Quantum Fields and Strings

Robert Myers Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010114
Introduction to Quantum Field Theory for Cosmology - Lecture 8

Achim Kempf University of Waterloo

January 30, 2014

PIRSA:14010007
Particle Physics: Expanding Our Perimeter

Natalia Toro Stanford University

Philip Schuster Stanford University

January 30, 2014

PIRSA:14010113
Constructing Quantum Space Time

Bianca Dittrich Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010112
What’s Happening in Cosmology?

Kendrick Smith Perimeter Institute for Theoretical Physics

Latham Boyle University of Edinburgh

January 30, 2014

PIRSA:14010111
Challenges 1

January 30, 2014

PIRSA:14010115
Experimental Metaphysics

Robert Spekkens Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010110
What A Quantumful World

Hector Bombin PsiQuantum Corp.

January 30, 2014

PIRSA:14010109
Emergence and Entanglement: A New World of Condensed Matter Physics

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics

January 30, 2014

PIRSA:14010108
Black hole entropy and the case for self-dual loop quantum gravity

January 29, 2014

PIRSA:14010098

General Relativity & Quantum Cosmology
Time, Dynamics, Chaos, and the Brain

Dean Buonomano University of California, Los Angeles

January 29, 2014

PIRSA:13010117
13/14 PSI - Cosmology Review - Lecture 3

Latham Boyle University of Edinburgh

January 29, 2014

PIRSA:14010067

Quantum Fields and Strings

Robert Myers Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010114
Introduction to Quantum Field Theory for Cosmology - Lecture 8

Achim Kempf University of Waterloo

January 30, 2014

PIRSA:14010007
Particle Physics: Expanding Our Perimeter

Natalia Toro Stanford University

Philip Schuster Stanford University

January 30, 2014

PIRSA:14010113
Constructing Quantum Space Time

Bianca Dittrich Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010112
What’s Happening in Cosmology?

Kendrick Smith Perimeter Institute for Theoretical Physics

Latham Boyle University of Edinburgh

January 30, 2014

PIRSA:14010111
Challenges 1

January 30, 2014

PIRSA:14010115
Experimental Metaphysics

Robert Spekkens Perimeter Institute for Theoretical Physics

January 30, 2014

PIRSA:14010110
What A Quantumful World

Hector Bombin PsiQuantum Corp.

January 30, 2014

PIRSA:14010109
Emergence and Entanglement: A New World of Condensed Matter Physics

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics

January 30, 2014

PIRSA:14010108
Black hole entropy and the case for self-dual loop quantum gravity

January 29, 2014

PIRSA:14010098

General Relativity & Quantum Cosmology

By focusing on aspects of black hole thermodynamics, I will present some evidences supporting the unexpected role of the complex self-dual variables in quantum gravity. This will also be the occasion of revisiting some aspects of three-dimensional gravity, and in particular the link between the BTZ black hole and the Turaev-Viro state sum model. Also the information on the website for next week needs to be modified: We will not have a seminar on Thursday (as Thursday is PI day). Instead, we will have the seminar on Wednesday, but actually would prefer a different time, namely 3.30 pm.
Time, Dynamics, Chaos, and the Brain

Dean Buonomano University of California, Los Angeles

January 29, 2014

PIRSA:13010117

Time poses a fundamental problem in neuroscience, in part, because at its core the brain is a prediction machine: the brain evolved to allow animals to anticipate, adapt, and prepare for future events. To accomplish this function the brain tells time on scales spanning 12 orders of magnitude. In contrast to most man made clocks that share a very simply underlying principle-counting the "tics" of an oscillator-evolution has devised many different solutions to the problem of telling time. On the scale of milliseconds and seconds experimental and computational evidence suggests that the brain relies on neural dynamics to tell time. For this strategy to work two conditions have to be met: the states of the neural network must evolve in a nonrepeating pattern over the relevant interval, and the sequence of states must be reproducible every time the system is reengaged. Recurrently connected networks of neurons can generate rich dynamics, but a long standing challenge is that the regimes that create computationally powerful dynamics are chaotic-and thus cannot generate reproducible patterns. We have recently demonstrated that by tuning the weights (the coupling coefficients) between the units of artificial neural networks it is possible to generate locally stable trajectories embedded within chaotic attractors. These stable patterns function as "dynamic attractors" and can be used to encode and tell time. They also exhibit a novel feature characteristic of biological systems: the ability to autonomously "return" to the pattern being generated in the face of perturbations.
13/14 PSI - Cosmology Review - Lecture 3

Latham Boyle University of Edinburgh

January 29, 2014

PIRSA:14010067

Title	Date	Collection	Type	Info
Quantum Fields and Strings	2014‑01‑30	PI Day 2014	Conference	View details
Introduction to Quantum Field Theory for Cosmology - Lecture 8	2014‑01‑30	Quantum Field Theory for Cosmology - 2014	Course	View details
Particle Physics: Expanding Our Perimeter	2014‑01‑30	PI Day 2014	Conference	View details
Constructing Quantum Space Time	2014‑01‑30	PI Day 2014	Conference	View details
What’s Happening in Cosmology?	2014‑01‑30	PI Day 2014	Conference	View details
Challenges 1	2014‑01‑30	PI Day 2014	Conference	View details
Experimental Metaphysics	2014‑01‑30	PI Day 2014	Conference	View details
What A Quantumful World	2014‑01‑30	PI Day 2014	Conference	View details
Emergence and Entanglement: A New World of Condensed Matter Physics	2014‑01‑30	PI Day 2014	Conference	View details
Black hole entropy and the case for self-dual loop quantum gravity	2014‑01‑29	Quantum Gravity	Scientific Series	View details
Time, Dynamics, Chaos, and the Brain	2014‑01‑29	Colloquium	Scientific Series	View details
13/14 PSI - Cosmology Review - Lecture 3	2014‑01‑29	13/14 PSI - Cosmology Review	Course	View details

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Format results

Quantum Fields and Strings

Introduction to Quantum Field Theory for Cosmology - Lecture 8

Particle Physics: Expanding Our Perimeter

Constructing Quantum Space Time

What’s Happening in Cosmology?

Challenges 1

Experimental Metaphysics

What A Quantumful World

Emergence and Entanglement: A New World of Condensed Matter Physics

Black hole entropy and the case for self-dual loop quantum gravity

Time, Dynamics, Chaos, and the Brain

13/14 PSI - Cosmology Review - Lecture 3

Quantum Fields and Strings

Introduction to Quantum Field Theory for Cosmology - Lecture 8

Particle Physics: Expanding Our Perimeter

Constructing Quantum Space Time

What’s Happening in Cosmology?

Challenges 1

Experimental Metaphysics

What A Quantumful World

Emergence and Entanglement: A New World of Condensed Matter Physics

Black hole entropy and the case for self-dual loop quantum gravity

Time, Dynamics, Chaos, and the Brain

13/14 PSI - Cosmology Review - Lecture 3