Talks

11113 - 11124 of 18093 Results

Entanglement of a Relativistic Field in the Vacuum State

Benni Reznik Tel Aviv University

June 25, 2012

PIRSA:12060069

High Energy Physics
The Quest for Localization

Juan José León García Instituto de Física Fundamental (IFF - CSIC)

June 25, 2012

PIRSA:12060044
PSI Graduation - 2012

June 23, 2012

PIRSA:12060081
A Journalist's Perspective on Science Media

Ivan Semeniuk The Globe and Mail

June 20, 2012

PIRSA:12060017
Pyrochlore Material Yb_2Ti_2O_7: A Model Quantum Spin Ice

June 15, 2012

PIRSA:12060072

Condensed Matter
Looking for Quantum Gravity in the Space of Conformal Field Theories

Joao Penedones L'Ecole Polytechnique Federale de Lausanne (EPFL)

June 13, 2012

PIRSA:12060005
Another Mass Gap in the BTZ Geometry? Hairy Black Holes in 2+1 Gravity

Sean Stotyn University of Waterloo

June 08, 2012

PIRSA:12060030
Numerical Holographic Striped Phases

June 08, 2012

PIRSA:12060029

Condensed Matter
From Quantum Field Theory to Quantum Gravity

Sung-Sik Lee McMaster University

June 08, 2012

PIRSA:12060028

General Relativity & Quantum Cosmology

High Energy Physics
Asymptotically AdS Gravitational Collapse

David Garfinkle Oakland University

June 08, 2012

PIRSA:12060018
Dynamics of AdS-CMT Quenches

Toby Wiseman Imperial College London

June 08, 2012

PIRSA:12060027
Black Holes From Matrix Quantum Mechanics

Miguel Sousa Costa Universidade do Porto

June 07, 2012

PIRSA:12060026

Entanglement of a Relativistic Field in the Vacuum State

Benni Reznik Tel Aviv University

June 25, 2012

PIRSA:12060069

High Energy Physics

We discuss gedanken experiments for measuring local and non-local observables in QFT that
respect causality, and can by used to test the entanglement between two spatially distant regions in the vacuum. It is shown that the entanglement decays exponentially with the distance between the regions and does not vanish, in contrast to the case of lattice models. We discuss in this respect a possible mechanism which might explain this persistence effect, and a connection between the Reeh-Schlieder theorem and superoscillations.
The Quest for Localization

Juan José León García Instituto de Física Fundamental (IFF - CSIC)

June 25, 2012

PIRSA:12060044

This talk aims to review the obstacles met in QFT to reach an appropriate definition for such a basic concept as localization. The anti-local character of the square root of the "- Laplace-Beltrami + mass^2" operator prevents the existence of localized states with a finite number of quanta. (Bosonic) quantum fields describe elementary excitations of an extended system whose ground state is the vacuum. No wonder, there is a complicated relationship between the cardinal (quantal) and continuous (spatial) sides of the theory. We will also analyze the roles (if any) played in RQI by the localized excitations of the vacuum.
PSI Graduation - 2012

June 23, 2012

PIRSA:12060081
A Journalist's Perspective on Science Media

Ivan Semeniuk The Globe and Mail

June 20, 2012

PIRSA:12060017

TBA
Pyrochlore Material Yb_2Ti_2O_7: A Model Quantum Spin Ice

June 15, 2012

PIRSA:12060072

Condensed Matter

We discuss the thermodynamic properties of the model exchange quantum spin ice material Yb_2Ti_2O_7. Using exchange parameters recently determined from high-field neutron scattering measurements, we calculate the thermodynamic properties of this model system. We find very good agreement with the heat capacity, entropy and magnetization measurements on the materials. We show that, in the weak quantum regime, quantum fluctuations lead to the selection, within the spin-ice manifold, of a conventional ordered ground state. However, the excitations above the ground state and their dynamics remain highly non-trivial. They consist of weakly bound spinon-antispinon pairs separated by long strings. We present several pieces of indirect evidence that the low temperature phase transition observed in these materials is to this conventional ordered state.
Looking for Quantum Gravity in the Space of Conformal Field Theories

Joao Penedones L'Ecole Polytechnique Federale de Lausanne (EPFL)

June 13, 2012

PIRSA:12060005

Conformal field theories have many applications ranging from continuous phase transitions in Statistical Mechanics to models of beyond the Standard Model physics in Particle Physics. In this talk, I will explain another remarkable application: some conformal field theories can be used to define and study Quantum Gravity. I will also try to give a brief summary of some of the main ideas being discussed at the conference "Back to the Bootstrap II".
Another Mass Gap in the BTZ Geometry? Hairy Black Holes in 2+1 Gravity

Sean Stotyn University of Waterloo

June 08, 2012

PIRSA:12060030

TBA
Numerical Holographic Striped Phases

June 08, 2012

PIRSA:12060029

Condensed Matter

TBA
From Quantum Field Theory to Quantum Gravity

Sung-Sik Lee McMaster University

June 08, 2012

PIRSA:12060028

General Relativity & Quantum Cosmology

High Energy Physics

TBA
Asymptotically AdS Gravitational Collapse

David Garfinkle Oakland University

June 08, 2012

PIRSA:12060018

TBA
Dynamics of AdS-CMT Quenches

Toby Wiseman Imperial College London

June 08, 2012

PIRSA:12060027

I will describe numerical simulations of quenches in AdS-CMT superconductors where we are able to construct a dynamical phase diagram for the system. I will describe how the late time behaviour is
understood in terms of the quasinormal modes of the system, and how a rather generic behaviour of the pole structure there leads to interesting physical consequences that have an analog in condensed matter calculations using integrable models.
Black Holes From Matrix Quantum Mechanics

Miguel Sousa Costa Universidade do Porto

June 07, 2012

PIRSA:12060026

TBA

Title	Date	Collection	Type	Info
Entanglement of a Relativistic Field in the Vacuum State	2012‑06‑25	Relativistic Quantum Information - 2012	Conference	View details
The Quest for Localization	2012‑06‑25	Relativistic Quantum Information - 2012	Conference	View details
PSI Graduation - 2012	2012‑06‑23			View details
A Journalist's Perspective on Science Media	2012‑06‑20	Colloquium	Scientific Series	View details
Pyrochlore Material Yb_2Ti_2O_7: A Model Quantum Spin Ice	2012‑06‑15	Quantum Matter	Scientific Series	View details
Looking for Quantum Gravity in the Space of Conformal Field Theories	2012‑06‑13	Colloquium	Scientific Series	View details
Another Mass Gap in the BTZ Geometry? Hairy Black Holes in 2+1 Gravity	2012‑06‑08	Exploring AdS/CFT Dualities in Dynamical Settings - 2012	Conference	View details
Numerical Holographic Striped Phases	2012‑06‑08	Exploring AdS/CFT Dualities in Dynamical Settings - 2012	Conference	View details
From Quantum Field Theory to Quantum Gravity	2012‑06‑08	Exploring AdS/CFT Dualities in Dynamical Settings - 2012	Conference	View details
Asymptotically AdS Gravitational Collapse	2012‑06‑08	Exploring AdS/CFT Dualities in Dynamical Settings - 2012	Conference	View details
Dynamics of AdS-CMT Quenches	2012‑06‑08	Exploring AdS/CFT Dualities in Dynamical Settings - 2012	Conference	View details
Black Holes From Matrix Quantum Mechanics	2012‑06‑07	Exploring AdS/CFT Dualities in Dynamical Settings - 2012	Conference	View details

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Format results

Entanglement of a Relativistic Field in the Vacuum State

The Quest for Localization

PSI Graduation - 2012

A Journalist's Perspective on Science Media

Pyrochlore Material Yb_2Ti_2O_7: A Model Quantum Spin Ice

Looking for Quantum Gravity in the Space of Conformal Field Theories

Another Mass Gap in the BTZ Geometry? Hairy Black Holes in 2+1 Gravity

Numerical Holographic Striped Phases

From Quantum Field Theory to Quantum Gravity

Asymptotically AdS Gravitational Collapse

Dynamics of AdS-CMT Quenches

Black Holes From Matrix Quantum Mechanics

Entanglement of a Relativistic Field in the Vacuum State

The Quest for Localization

PSI Graduation - 2012

A Journalist's Perspective on Science Media

Pyrochlore Material Yb_2Ti_2O_7: A Model Quantum Spin Ice

Looking for Quantum Gravity in the Space of Conformal Field Theories

Another Mass Gap in the BTZ Geometry? Hairy Black Holes in 2+1 Gravity

Numerical Holographic Striped Phases

From Quantum Field Theory to Quantum Gravity

Asymptotically AdS Gravitational Collapse

Dynamics of AdS-CMT Quenches

Black Holes From Matrix Quantum Mechanics