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14/15 PSI - Green Functions-2

Denis Dalidovich

September 03, 2014

PIRSA:14090034
Monogamy of entanglement and improved mean-field ansatz for spin lattices

Ralf Schuetzhold Helmholtz-Zentrum Dresden-Rossendorf
September 02, 2014

PIRSA:14090069
Condensed Matter
Asymmetric Dark Matter Bound States

Mark Wise California Institute of Technology (Caltech)

September 02, 2014

PIRSA:14090068
Black hole evaporation without firewalls

James Bardeen
September 02, 2014

PIRSA:14090001
Cosmology
14/15 PSI - Mathematica-1

Erik Schnetter Perimeter Institute for Theoretical Physics

September 02, 2014

PIRSA:14090037
14/15 PSI - Green Functions-1

Denis Dalidovich

September 02, 2014

PIRSA:14090033
Coloron-assisted Leptoquarks at the LHC

Joshua Berger Cornell University
August 29, 2014

PIRSA:14080042
Particle Physics
14/15 PSI - Differential Geormetry-4

Matthew Johnson York University

August 28, 2014

PIRSA:14080035
14/15 PSI - Lie Groups-4

Gang Xu Perimeter Institute for Theoretical Physics

August 28, 2014

PIRSA:14080031
14/15 PSI - Differential Geormetry-3

Matthew Johnson York University

August 27, 2014

PIRSA:14080034
14/15 PSI - Lie Groups-3

Gang Xu Perimeter Institute for Theoretical Physics

August 27, 2014

PIRSA:14080030
The Gravity Dual of Supersymmetric Gauge Theories on a Squashed Five-Sphere

Martin Fluder University of Oxford

August 26, 2014

PIRSA:14080003

14/15 PSI - Green Functions-2

Denis Dalidovich

September 03, 2014

PIRSA:14090034
Monogamy of entanglement and improved mean-field ansatz for spin lattices

Ralf Schuetzhold Helmholtz-Zentrum Dresden-Rossendorf
September 02, 2014

PIRSA:14090069
Condensed Matter
We consider rather general spin-1/2 lattices with large coordination numbers Z.
Based on the monogamy of entanglement and other properties of the concurrence C,
we derive rigorous bounds for the entanglement between neighboring spins,
which show that C decreases for large Z. In addition, the concurrence C measures the deviation from mean-field behavior and can only vanish if the mean-field ansatz yields an exact ground state of the Hamiltonian. Motivated by these findings, we propose an improved mean-field ansatz by adding entanglement
Asymmetric Dark Matter Bound States

Mark Wise California Institute of Technology (Caltech)

September 02, 2014

PIRSA:14090068

One of the simplest low energy effective theories with Asymmetric Dark Matter contains a gauge singlet Dirac Fermion for the dark matter and a gauge singlet scalar as the mediator that the dark matter decays into. In this model I discuss the spectrum of bound states (two body and multi-body) and the cosmological production/dissociation of dark matter two body bound states.
Black hole evaporation without firewalls

James Bardeen
September 02, 2014

PIRSA:14090001
Cosmology
There need not be any conflict between unitarity, locality, and regularity of the horizon in black hole evaporation. I discuss a scenario in which the initial collapse that forms the black hole results in a small non-singular core inside an inner event horizon. This core grows as the result of quantum back-reaction associated with the increasing entanglement entropy of Hawking radiation quanta and their partners trapped inside the core. By the Page time the inner and outer apparent horizons either merge into a degenerate horizon, shutting off the Hawking radiation and leaving a massive remnant, or they disappear completely, allowing the trapped quantum information to escape. The scenario is justified by appeals to the Bousso covariant entropy bound and the ER=EPR conjecture. The talk is largely based on arxiv.org/1406.4098.
14/15 PSI - Mathematica-1

Erik Schnetter Perimeter Institute for Theoretical Physics

September 02, 2014

PIRSA:14090037
14/15 PSI - Green Functions-1

Denis Dalidovich

September 02, 2014

PIRSA:14090033
Coloron-assisted Leptoquarks at the LHC

Joshua Berger Cornell University
August 29, 2014

PIRSA:14080042
Particle Physics
Recent searches for a first-generation leptoquark by the CMS collaboration have shown around 2.5 sigma deviations from Standard Model predictions in both the eejj and e nu jj channels. Furthermore, the eejj invariant mass distribution has another 2.8 sigma excess from the CMS right-handed W plus heavy neutrino search. We point out that additional leptoquark production from a heavy coloron decay can provide a good explanation for all three excesses. The coloron has a mass around 2.1 TeV and the leptoquark mass can vary from 550 GeV to 650 GeV. A key prediction of this model is an edge in the total m_T distribution of e nu jj events at around 2.1 TeV.
14/15 PSI - Differential Geormetry-4

Matthew Johnson York University

August 28, 2014

PIRSA:14080035
14/15 PSI - Lie Groups-4

Gang Xu Perimeter Institute for Theoretical Physics

August 28, 2014

PIRSA:14080031
14/15 PSI - Differential Geormetry-3

Matthew Johnson York University

August 27, 2014

PIRSA:14080034
14/15 PSI - Lie Groups-3

Gang Xu Perimeter Institute for Theoretical Physics

August 27, 2014

PIRSA:14080030
The Gravity Dual of Supersymmetric Gauge Theories on a Squashed Five-Sphere

Martin Fluder University of Oxford

August 26, 2014

PIRSA:14080003

We construct the gravity duals of large N supersymmetric gauge theories on a squashed five-sphere. They are constructed in Euclidean Romans F(4) gauged supergravity in six-dimensions. We find a one- as well as a two-parameter family of solutions and evaluate the renormalised on-shell and fundamental string action for these solutions to find precise agreement with gauge theory.

Title	Date	Collection	Type	Info
14/15 PSI - Green Functions-2	2014‑09‑03	14/15 PSI - Front End	Course	View details
Monogamy of entanglement and improved mean-field ansatz for spin lattices	2014‑09‑02	Quantum Matter	Scientific Series	View details
Asymmetric Dark Matter Bound States	2014‑09‑02	Particle Physics	Scientific Series	View details
Black hole evaporation without firewalls	2014‑09‑02	Cosmology and Gravitation	Scientific Series	View details
14/15 PSI - Mathematica-1	2014‑09‑02	14/15 PSI - Front End	Course	View details
14/15 PSI - Green Functions-1	2014‑09‑02	14/15 PSI - Front End	Course	View details
Coloron-assisted Leptoquarks at the LHC	2014‑08‑29	Particle Physics	Scientific Series	View details
14/15 PSI - Differential Geormetry-4	2014‑08‑28	14/15 PSI - Front End	Course	View details
14/15 PSI - Lie Groups-4	2014‑08‑28	14/15 PSI - Front End	Course	View details
14/15 PSI - Differential Geormetry-3	2014‑08‑27	14/15 PSI - Front End	Course	View details
14/15 PSI - Lie Groups-3	2014‑08‑27	14/15 PSI - Front End	Course	View details
The Gravity Dual of Supersymmetric Gauge Theories on a Squashed Five-Sphere	2014‑08‑26	Quantum Fields and Strings	Scientific Series	View details

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