High Energy Physics

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Holomorphic Blocks in 3d

Tudor Dimofte University of Edinburgh
November 06, 2012

PIRSA:12110056
High Energy Physics
Quantum Field Theory - Lecture 14B

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 26, 2012

PIRSA:12100075
High Energy Physics
Quantum Field Theory - Lecture 14A

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 26, 2012

PIRSA:12100021
High Energy Physics
Quantum Field Theory - Lecture 13B

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 25, 2012

PIRSA:12100074
High Energy Physics
Quantum Field Theory - Lecture 13A

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 25, 2012

PIRSA:12100020
High Energy Physics
Quantum Field Theory - Lecture 12B

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 24, 2012

PIRSA:12100073
High Energy Physics
Quantum Field Theory - Lecture 12A

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 24, 2012

PIRSA:12100019
High Energy Physics
From Effective Strings to the Simplest theory of Quantum Gravity
October 23, 2012

PIRSA:12100040
High Energy Physics
New Results in Jet Substructure
October 23, 2012

PIRSA:12100128
High Energy Physics
An informal discussion about topological gauge theory

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics
October 23, 2012

PIRSA:12100129
High Energy Physics
Quantum Field Theory - Lecture 11B

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 23, 2012

PIRSA:12100072
High Energy Physics
Quantum Field Theory - Lecture 11A

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 23, 2012

PIRSA:12100018
High Energy Physics

Holomorphic Blocks in 3d

Tudor Dimofte University of Edinburgh
November 06, 2012

PIRSA:12110056
High Energy Physics
Recently techniques have been developed to compute the partition functions of 3d theories with N=2 supersymmetry on curved, compact spaces, in particular S^3 and S^2xS^1 (the latter giving a supersymmetric index). I will discuss how both of these partition functions can be decomposed as products of more fundamental, universal "holomorphic blocks." For 3d gauge theories arising from (auxiliary) 3-manifolds M, these holomorphic blocks are specific Chern-Simons partition functions on M.
Quantum Field Theory - Lecture 14B

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 26, 2012

PIRSA:12100075
High Energy Physics
Quantum Field Theory - Lecture 14A

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 26, 2012

PIRSA:12100021
High Energy Physics
Quantum Field Theory - Lecture 13B

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 25, 2012

PIRSA:12100074
High Energy Physics
Quantum Field Theory - Lecture 13A

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 25, 2012

PIRSA:12100020
High Energy Physics
Quantum Field Theory - Lecture 12B

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 24, 2012

PIRSA:12100073
High Energy Physics
Quantum Field Theory - Lecture 12A

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 24, 2012

PIRSA:12100019
High Energy Physics
From Effective Strings to the Simplest theory of Quantum Gravity
October 23, 2012

PIRSA:12100040
High Energy Physics
String-like objects arise in many quantum field theories. Well known examples include flux tubes in QCD and cosmic strings. To a first approximation, their dynamics is governed by the Nambu-Goto action, but for QCD flux tubes numerical calculations of the energy levels of these objects have become so accurate that a systematic understanding of corrections to this simple description is desirable. In the first part of my talk, I discuss an effective field theory describing long relativistic strings. The construction parallels that of the chiral Lagrangian in that it is based on the pattern of symmetry breaking. To compare with previous works, I will present the results of the calculation of the S-matrix describing the scattering of excitations on the string worldsheet. In the second part of my talk, I will discuss critical strings from the same point of view and show that the worldsheet S-matrix in this case is non-trivial but can be calculated exactly. I will show that it encodes the familiar square-root formula for the energy levels of the string, the Hagedorn behavior of strings, and argue that the theory on the string worldsheet behaves like a 1+1 dimensional theory of quantum gravity rather than a field theory. If time permits, I will return to the task of computing the energy levels of flux-tubes using lessons learned from the second part of my talk.
New Results in Jet Substructure
October 23, 2012

PIRSA:12100128
High Energy Physics
We present new results on the performance of jet substructure techniques and their use in distinguishing the signatures of new boosted massive particles from the QCD background. Advanced approaches to jet reconstruction using jet grooming algorithms such as filtering, trimming, and pruning are compared. Measurements of the jet invariant mass for each jet algorithm are compared both at the particle level to multiple Monte Carlo event generators and at the detector level for several configurations of the jet grooming algorithms. The performance of these strategies and improvements in search sensitivity for new boosted hadronic particles are compared. Recent results using these techniques for both boosted RPV gluinos and top quark pairs from new particles are presented. The result is a comprehensive foundation for the use of substructure algorithms in the search for new physics at the LHC
An informal discussion about topological gauge theory

Xiao-Gang Wen Massachusetts Institute of Technology (MIT) - Department of Physics
October 23, 2012

PIRSA:12100129
High Energy Physics
Reference:
Topological gauge theories and group cohomology
Robbert Dijkgraaf and Edward Witten
http://projecteuclid.org/DPubS?service=UI&version=1.0&verb=Display&handle=euclid.cmp/1104180750

Braiding statistics approach to symmetry-protected topological phases
Michael Levin, Zheng-Cheng Gu
http://arxiv.org/abs/1202.3120
Quantum Field Theory - Lecture 11B

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 23, 2012

PIRSA:12100072
High Energy Physics
Quantum Field Theory - Lecture 11A

Konstantin Zarembo Nordic Institute for Theoretical Physics
October 23, 2012

PIRSA:12100018
High Energy Physics

Title	Speaker(s)	Date	Talk Type	Info link
Holomorphic Blocks in 3d	Tudor Dimofte	2012-11-06	Scientific Series	View details
Quantum Field Theory - Lecture 14B	Konstantin Zarembo	2012-10-26	Course	View details
Quantum Field Theory - Lecture 14A	Konstantin Zarembo	2012-10-26	Course	View details
Quantum Field Theory - Lecture 13B	Konstantin Zarembo	2012-10-25	Course	View details
Quantum Field Theory - Lecture 13A	Konstantin Zarembo	2012-10-25	Course	View details
Quantum Field Theory - Lecture 12B	Konstantin Zarembo	2012-10-24	Course	View details
Quantum Field Theory - Lecture 12A	Konstantin Zarembo	2012-10-24	Course	View details
From Effective Strings to the Simplest theory of Quantum Gravity		2012-10-23	Scientific Series	View details
New Results in Jet Substructure		2012-10-23	Scientific Series	View details
An informal discussion about topological gauge theory	Xiao-Gang Wen	2012-10-23	Scientific Series	View details
Quantum Field Theory - Lecture 11B	Konstantin Zarembo	2012-10-23	Course	View details
Quantum Field Theory - Lecture 11A	Konstantin Zarembo	2012-10-23	Course	View details

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Format results

Holomorphic Blocks in 3d

Quantum Field Theory - Lecture 14B

Quantum Field Theory - Lecture 14A

Quantum Field Theory - Lecture 13B

Quantum Field Theory - Lecture 13A

Quantum Field Theory - Lecture 12B

Quantum Field Theory - Lecture 12A

From Effective Strings to the Simplest theory of Quantum Gravity

New Results in Jet Substructure

An informal discussion about topological gauge theory

Quantum Field Theory - Lecture 11B

Quantum Field Theory - Lecture 11A

Holomorphic Blocks in 3d

Quantum Field Theory - Lecture 14B

Quantum Field Theory - Lecture 14A

Quantum Field Theory - Lecture 13B

Quantum Field Theory - Lecture 13A

Quantum Field Theory - Lecture 12B

Quantum Field Theory - Lecture 12A

From Effective Strings to the Simplest theory of Quantum Gravity

New Results in Jet Substructure

An informal discussion about topological gauge theory

Quantum Field Theory - Lecture 11B

Quantum Field Theory - Lecture 11A