Conference

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Boundary Effects on Quantum Entanglement and its Dynamics in a Detector-Field System

June 25, 2012

PIRSA:12060074
Tripartite Entanglement, Svetlichny Inequalities, and Non-inertial Observers

Robert Mann University of Waterloo

June 25, 2012

PIRSA:12060042
Geometric Discord in Non-Inertial Frames

Eric Brown University of Chicago

June 25, 2012

PIRSA:12060058
Quantum Teleportation from Alice to Rob in Vacuum

Shih-Yuin Lin National Changhua University of Education

June 25, 2012

PIRSA:12060047
Physical Results with Fermions in RQI

June 25, 2012

PIRSA:12060046
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
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

Boundary Effects on Quantum Entanglement and its Dynamics in a Detector-Field System

June 25, 2012

PIRSA:12060074

We analyze an exactly solvable model consisting of an inertial Unruh-DeWitt detector which interacts linearly with a massless quantum field in Minkowski spacetime with a perfectly reflecting flat plane boundary. This model is related to proposed mirror-field superposition and relevant experiments in macroscopic quantum phenomena, as well as atomic fluctuation forces near a conducting surface. Firstly a coupled set of equations for the detector’s and the field’s Heisenberg operators are derived. After coarse graining the field, the dynamics of the detector’s internal degreeof freedom is described by a quantum Langevin equation, where the dissipation and noise kernels respectively correspond to the retarded Green’s functions and Hadamard elementary functions of the free quantum field in half space. We use the linear entropy as measures of entanglement between the detector and the quantum field under mirror reflection, then solve the early-time detector-fieldentanglement dynamics. At late times when the combined system is in a stationary state, we obtain exact expressions for the detector’s covariance matrix and show that the detector-field entanglement decreases for smaller separation between the detector and the mirror.We explain the behavior of detector-field entanglement qualitatively with the help of a detector’s mirror image, compare them with the case of two real detectors and explain the differences.
Tripartite Entanglement, Svetlichny Inequalities, and Non-inertial Observers

Robert Mann University of Waterloo

June 25, 2012

PIRSA:12060042

I discuss the behaviour of bipartite and tripartite non-locality between fermionic entangled states shared by observers, one of whom uniformly accelerates. Although fermionic entanglement persists for arbitrarily large acceleration, the Bell/CHSH inequalities cannot be violated for sufficiently large but finite acceleration. However the Svetlichny inequality, which is a measure of genuine tripartite non-locality, can be violated for any finite value of the acceleration.
Geometric Discord in Non-Inertial Frames

Eric Brown University of Chicago

June 25, 2012

PIRSA:12060058

I review the recent work performed on computing the geometric discord in non-inertial frames. We consider the well-known case of an inertially maximally entangled state shared by inertial Alice and non-inertial Robb. It is found that for high accelerations the geometric discord decays to a negligible amount; this is in stark contrast to the entropic definition of quantum discord which asymptotes to a finite value in the same limit. Such a result has two different implications: the first being that usable quantum correlations are more limited in this regime than previously thought and the second being that geometric discord may not be a sufficient measure of quantum correlations. I will discuss both of these perspectives.
Quantum Teleportation from Alice to Rob in Vacuum

Shih-Yuin Lin National Changhua University of Education

June 25, 2012

PIRSA:12060047

We consider quantum teleportation of continuous variables in a relativistic system with the Unruh-DeWitt detectorscoupled to a common quantum field initially in the Minkowski vacuum. An unknown coherent state of an Unruh-DeWitt detector is teleported from one inertial agent (Alice) to an almost uniformly accelerated agent (Rob), using a detector pair initially entangled and shared by these two agents. Results for the averaged physical fidelity of quantum teleportation will be discussed.
Physical Results with Fermions in RQI

June 25, 2012

PIRSA:12060046

A number of works in the field of relativistic quantum information have been devoted to the study of entanglement on certain simple families of Unruh-mode entangled states in non-inertial frames. In the fermionic case remarkable results such as the survival of entanglement at infinite acceleration have been obtained. In this talk we will present and analyze some issues related to the anticommuting character of fermionic field operators, which have been overlooked in the past, sometimes leading to unphysical results. We provide a simple way of obtaining physical results, yielding interesting consequences such as convergence of field entanglement for different families of Unruh mode-entangled states in the infinite acceleration limit.
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.
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.

Title	Speaker(s)	Date	Talk Type	Info link
Boundary Effects on Quantum Entanglement and its Dynamics in a Detector-Field System		2012-06-25	Conference	View details
Tripartite Entanglement, Svetlichny Inequalities, and Non-inertial Observers	Robert Mann	2012-06-25	Conference	View details
Geometric Discord in Non-Inertial Frames	Eric Brown	2012-06-25	Conference	View details
Quantum Teleportation from Alice to Rob in Vacuum	Shih-Yuin Lin	2012-06-25	Conference	View details
Physical Results with Fermions in RQI		2012-06-25	Conference	View details
Entanglement of a Relativistic Field in the Vacuum State	Benni Reznik	2012-06-25	Conference	View details
The Quest for Localization	Juan José León García	2012-06-25	Conference	View details
Another Mass Gap in the BTZ Geometry? Hairy Black Holes in 2+1 Gravity	Sean Stotyn	2012-06-08	Conference	View details
Numerical Holographic Striped Phases		2012-06-08	Conference	View details
From Quantum Field Theory to Quantum Gravity	Sung-Sik Lee	2012-06-08	Conference	View details
Asymptotically AdS Gravitational Collapse	David Garfinkle	2012-06-08	Conference	View details
Dynamics of AdS-CMT Quenches	Toby Wiseman	2012-06-08	Conference	View details

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Format results

Boundary Effects on Quantum Entanglement and its Dynamics in a Detector-Field System

Tripartite Entanglement, Svetlichny Inequalities, and Non-inertial Observers

Geometric Discord in Non-Inertial Frames

Quantum Teleportation from Alice to Rob in Vacuum

Physical Results with Fermions in RQI

Entanglement of a Relativistic Field in the Vacuum State

The Quest for Localization

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

Boundary Effects on Quantum Entanglement and its Dynamics in a Detector-Field System

Tripartite Entanglement, Svetlichny Inequalities, and Non-inertial Observers

Geometric Discord in Non-Inertial Frames

Quantum Teleportation from Alice to Rob in Vacuum

Physical Results with Fermions in RQI

Entanglement of a Relativistic Field in the Vacuum State

The Quest for Localization

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