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Search results in High Energy Physics from PIRSA

1777 - 1788 of 3073 Results

Wall-Crossing and Quiver Invariants

Piljin Yi Korea Institute for Advanced Study
February 19, 2013

PIRSA:13020137
High Energy Physics
Qanti-kt: Nondeterministic jet clustering

David Krohn Harvard University
February 19, 2013

PIRSA:13020135
High Energy Physics
12/13 PSI - Beyond the Standard Model Lecture 1
- Itay Yavin McMaster University
- Natalia Toro Stanford University
February 19, 2013

PIRSA:13020089
High Energy Physics
Time Crystals

Alfred Shapere University of Kentucky
February 05, 2013

PIRSA:13020121
High Energy Physics
How to Fall into a Black Hole

Herman Verlinde Princeton University
January 29, 2013

PIRSA:13010020
High Energy Physics
12/13 PSI - Found Quantum Mechanics Lecture 15

Robert Spekkens Perimeter Institute for Theoretical Physics
January 25, 2013

PIRSA:13010084
High Energy Physics
12/13 PSI - String Theory Review Lecture 15

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics
January 25, 2013

PIRSA:13010065
High Energy Physics
12/13 PSI - Standard Model Review Lecture 15

Mark Wise California Institute of Technology (Caltech)
January 25, 2013

PIRSA:13010042
High Energy Physics
12/13 PSI - Found Quantum Mechanics Lecture 14

Robert Spekkens Perimeter Institute for Theoretical Physics
January 24, 2013

PIRSA:13010083
High Energy Physics
12/13 PSI - String Theory Review Lecture 14

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics
January 24, 2013

PIRSA:13010064
High Energy Physics
12/13 PSI - Standard Model Review Lecture 14

Mark Wise California Institute of Technology (Caltech)
January 24, 2013

PIRSA:13010041
High Energy Physics
12/13 PSI - Found Quantum Mechanics Lecture 13

Robert Spekkens Perimeter Institute for Theoretical Physics
January 23, 2013

PIRSA:13010082
High Energy Physics

Wall-Crossing and Quiver Invariants

Piljin Yi Korea Institute for Advanced Study
February 19, 2013

PIRSA:13020137
High Energy Physics
We start with a one-slide review of the Kontsevich-Soibelman (KS) solution to the wall-crossing problem and then proceed to direct and comprehensive physics counting of BPS states that eventually connects to KS. We also asks what input data is needed for either approaches to produce complete BPS spectra, and this naturally leads to the BPS quiver representation of BPS states and the new notion of quiver invariants.
We propose a simple geometrical conjecture that can segregate BPS states in Higgs phases of the BPS quiver dynamics to those that experience wall-crossing and those that do not, and give
proofs for all cyclice Abelian quivers. We close with explanation of how physics distinguishes two such classes of BPS states.
Qanti-kt: Nondeterministic jet clustering

David Krohn Harvard University
February 19, 2013

PIRSA:13020135
High Energy Physics
The interpretation of events with jets is often ambiguous, especially for the sort of highly complex events one encounters at the LHC. One often finds that an event interpreted as signal-like using one choice of jet algorithm and radius parameter is no longer signal-like with another, even if the two are very similar. Here we present an extension of the Qjets procedure designed to account for this ambiguity and assign each plausible interpretation of an event a weight, so that events which are unambiguously signal-like carry more influence on one's results than events which are only marginally so. This procedure can be used with any existing analysis employing a sequential recombination algorithm like anti-kT and we will show that through its use the statistical power of an analysis often increases. In particular, we will see that a up to a 20\% improvement in statistical significance can be realized for a Higgs-like analysis searching for a resonance recoiling against an associated vector boson.
12/13 PSI - Beyond the Standard Model Lecture 1
- Itay Yavin McMaster University
- Natalia Toro Stanford University
February 19, 2013

PIRSA:13020089
High Energy Physics
Time Crystals

Alfred Shapere University of Kentucky
February 05, 2013

PIRSA:13020121
High Energy Physics
I consider a class of simple classical systems which exhibit motion in their lowest-energy states and thus spontaneously break time-translation symmetry. Their Lagrangians have nonstandard kinetic terms and their Hamiltonians are multivalued functions of momentum, yet they are perfectly consistent and amenable to quantization. Field theoretical generalizations of these systems may have applications in condensed matter physics and cosmology.
How to Fall into a Black Hole

Herman Verlinde Princeton University
January 29, 2013

PIRSA:13010020
High Energy Physics
In this talk I investigate the "firewall argument", that claims that black hole horizons can not be smooth. Using a holographic model of the black hole horizon as a quantum mechanical membrane, I show how to recover the black hole interior as an emergent smooth region of space-time. The reconstruction makes use of the formalism of quantum error correcting codes. I explain why the horizon of very old black holes appears to be singular, and formulate a complementarity principle that resolves this firewall paradox.
12/13 PSI - Found Quantum Mechanics Lecture 15

Robert Spekkens Perimeter Institute for Theoretical Physics
January 25, 2013

PIRSA:13010084
High Energy Physics
12/13 PSI - String Theory Review Lecture 15

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics
January 25, 2013

PIRSA:13010065
High Energy Physics
12/13 PSI - Standard Model Review Lecture 15

Mark Wise California Institute of Technology (Caltech)
January 25, 2013

PIRSA:13010042
High Energy Physics
12/13 PSI - Found Quantum Mechanics Lecture 14

Robert Spekkens Perimeter Institute for Theoretical Physics
January 24, 2013

PIRSA:13010083
High Energy Physics
12/13 PSI - String Theory Review Lecture 14

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics
January 24, 2013

PIRSA:13010064
High Energy Physics
12/13 PSI - Standard Model Review Lecture 14

Mark Wise California Institute of Technology (Caltech)
January 24, 2013

PIRSA:13010041
High Energy Physics
12/13 PSI - Found Quantum Mechanics Lecture 13

Robert Spekkens Perimeter Institute for Theoretical Physics
January 23, 2013

PIRSA:13010082
High Energy Physics

Title	Date	Collection	Type	Info
Wall-Crossing and Quiver Invariants	2013‑02‑19	Quantum Fields and Strings	Scientific Series	View details
Qanti-kt: Nondeterministic jet clustering	2013‑02‑19	Particle Physics	Scientific Series	View details
12/13 PSI - Beyond the Standard Model Lecture 1	2013‑02‑19	12/13 PSI - Beyond the Standard Model	Course	View details
Time Crystals	2013‑02‑05	Quantum Fields and Strings	Scientific Series	View details
How to Fall into a Black Hole	2013‑01‑29	Quantum Fields and Strings	Scientific Series	View details
12/13 PSI - Found Quantum Mechanics Lecture 15	2013‑01‑25	12/13 PSI - Found Quantum Mechanics	Course	View details
12/13 PSI - String Theory Review Lecture 15	2013‑01‑25	12/13 PSI - String Theory Review	Course	View details
12/13 PSI - Standard Model Review Lecture 15	2013‑01‑25	12/13 PSI - Standard Model Review	Course	View details
12/13 PSI - Found Quantum Mechanics Lecture 14	2013‑01‑24	12/13 PSI - Found Quantum Mechanics	Course	View details
12/13 PSI - String Theory Review Lecture 14	2013‑01‑24	12/13 PSI - String Theory Review	Course	View details
12/13 PSI - Standard Model Review Lecture 14	2013‑01‑24	12/13 PSI - Standard Model Review	Course	View details
12/13 PSI - Found Quantum Mechanics Lecture 13	2013‑01‑23	12/13 PSI - Found Quantum Mechanics	Course	View details

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Format results

Wall-Crossing and Quiver Invariants

Qanti-kt: Nondeterministic jet clustering

12/13 PSI - Beyond the Standard Model Lecture 1

Time Crystals

How to Fall into a Black Hole

12/13 PSI - Found Quantum Mechanics Lecture 15

12/13 PSI - String Theory Review Lecture 15

12/13 PSI - Standard Model Review Lecture 15

12/13 PSI - Found Quantum Mechanics Lecture 14

12/13 PSI - String Theory Review Lecture 14

12/13 PSI - Standard Model Review Lecture 14

12/13 PSI - Found Quantum Mechanics Lecture 13

Wall-Crossing and Quiver Invariants

Qanti-kt: Nondeterministic jet clustering

12/13 PSI - Beyond the Standard Model Lecture 1

Time Crystals

How to Fall into a Black Hole

12/13 PSI - Found Quantum Mechanics Lecture 15

12/13 PSI - String Theory Review Lecture 15

12/13 PSI - Standard Model Review Lecture 15

12/13 PSI - Found Quantum Mechanics Lecture 14

12/13 PSI - String Theory Review Lecture 14

12/13 PSI - Standard Model Review Lecture 14

12/13 PSI - Found Quantum Mechanics Lecture 13