Talks

10645 - 10656 of 16754 Results

12/13 PSI - String Theory Review Lecture 3

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics

January 09, 2013

PIRSA:13010045

Quantum Fields and Strings
12/13 PSI - Standard Model Review Lecture 3

Mark Wise California Institute of Technology (Caltech)

January 09, 2013

PIRSA:13010026

Particle Physics
Field-induced thermal transport in BEC antiferromagnets

Alexander Chernyshev University of California, Irvine

January 08, 2013

PIRSA:13010002

Condensed Matter
Worldsheet form factors in AdS/CFT

Tristan McLoughlin Trinity College Dublin

January 08, 2013

PIRSA:13010022

Quantum Fields and Strings
12/13 PSI - Found Quantum Mechanics Lecture 2

Robert Spekkens Perimeter Institute for Theoretical Physics

January 08, 2013

PIRSA:13010067

Quantum Fields and Strings
Fifth forces and new particles from dark energy

Amol Upadhye University of Wisconsin–Madison

January 08, 2013

PIRSA:13010023

Cosmology
12/13 PSI - String Theory Review Lecture 2

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics

January 08, 2013

PIRSA:13010044

Quantum Fields and Strings
12/13 PSI - Standard Model Review Lecture 2

Mark Wise California Institute of Technology (Caltech)

January 08, 2013

PIRSA:13010025

Particle Physics
12/13 PSI - Found Quantum Mechanics Lecture 1

Robert Spekkens Perimeter Institute for Theoretical Physics

January 07, 2013

PIRSA:13010066

Quantum Fields and Strings
12/13 PSI - String Theory Review Lecture 1

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics

January 07, 2013

PIRSA:13010043
12/13 PSI - Standard Model Review Lecture 1

Mark Wise California Institute of Technology (Caltech)

January 07, 2013

PIRSA:13010024

Particle Physics
All one-loop amplitudes in N=6 Chern-Simons matter theories

Congkao Wen Queen Mary University of London

December 18, 2012

PIRSA:12120005

Quantum Fields and Strings

12/13 PSI - String Theory Review Lecture 3

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics

January 09, 2013

PIRSA:13010045

Quantum Fields and Strings
12/13 PSI - Standard Model Review Lecture 3

Mark Wise California Institute of Technology (Caltech)

January 09, 2013

PIRSA:13010026

Particle Physics
Field-induced thermal transport in BEC antiferromagnets

Alexander Chernyshev University of California, Irvine

January 08, 2013

PIRSA:13010002

Condensed Matter

Recent experiments in BEC quantum magnets exhibit a dramatic evolution of the thermal conductivity of these materials in magnetic field. By considering various relaxation mechanisms of bosonic excitations in the vicinity of the BEC quantum-critical point at finite temperature we provide a detailed explanation of several unusual features of the data. We identify the leading impurity-scattering interaction and demonstrate that its renormalization due to quantum fluctuations of the paramagnetic state compensates the related mass renormalization effect. This explains the enigmatic absence of the asymmetry between the two critical points in the low-T thermal conductivity data, while such an asymmetry is prominent in many other physical quantities. The observed characteristic "migration'' of the peak in thermal conductivity away from the transition points as a function of temperature is explained as due to a competition between an increase in the number of heat carriers and an enhancement of their mutual scattering. An important role of the three-boson scattering processes within the ordered phase of these systems is also discussed. Other qualitative and quantitative features of the experiment are clarified and the future directions are sketched.
Worldsheet form factors in AdS/CFT

Tristan McLoughlin Trinity College Dublin

January 08, 2013

PIRSA:13010022

Quantum Fields and Strings

The study of the worldsheet S-matrix for AdS_5×S^5 strings was a key step in the complete determination of the non-pertubrative planar spectrum of anomalous dimensions for N=4 super-Yang-Mills. To go beyond the spectral problem it is important to consider higher-point worldsheet correlation functions and, as is standard in many integrable models, one approach is the study of form factors. We will discuss a set of consistency conditions appropriate to form factors in the light-cone gauge fixed AdS_5×S^5 string theory. We further discuss the form factors in the weakly coupled dual description, verifying that the relevant conditions naturally hold for the one-loop Heisenberg spin-chain.
12/13 PSI - Found Quantum Mechanics Lecture 2

Robert Spekkens Perimeter Institute for Theoretical Physics

January 08, 2013

PIRSA:13010067

Quantum Fields and Strings
Fifth forces and new particles from dark energy

Amol Upadhye University of Wisconsin–Madison

January 08, 2013

PIRSA:13010023

Cosmology

Dark energy coupled to Standard Model fermions and gauge bosons gives rise to fifth forces and new particles, which are readily accessible to experiments from laboratory to cosmological scales. I will discuss chameleon and symmetron models, whose fifth forces are screened locally through large effective masses and symmetry-restoring phase transitions, respectively. Fifth force experiments such as the Eot-Wash torsion balance will test chameleons with small quantum corrections and gravitation-strength fifth forces, as well as symmetrons with coupling energies just beyond the Standard Model scale. A dark energy coupling to electromagnetism would imply that photons passing through a magnetic field will oscillate into particles of dark energy, a phenomenon studied by afterglow experiments such as CHASE. After constraining dark energy using laboratory experiments, I proceed to astrophysical probes. Particles of a photon-coupled dark energy could be produced in the Sun and detected in magnetic helioscopes such as CAST, while fifth forces may alter the dynamics of variable stars and the growth of large-scale structure.
12/13 PSI - String Theory Review Lecture 2

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics

January 08, 2013

PIRSA:13010044

Quantum Fields and Strings
12/13 PSI - Standard Model Review Lecture 2

Mark Wise California Institute of Technology (Caltech)

January 08, 2013

PIRSA:13010025

Particle Physics
12/13 PSI - Found Quantum Mechanics Lecture 1

Robert Spekkens Perimeter Institute for Theoretical Physics

January 07, 2013

PIRSA:13010066

Quantum Fields and Strings
12/13 PSI - String Theory Review Lecture 1

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics

January 07, 2013

PIRSA:13010043
12/13 PSI - Standard Model Review Lecture 1

Mark Wise California Institute of Technology (Caltech)

January 07, 2013

PIRSA:13010024

Particle Physics
All one-loop amplitudes in N=6 Chern-Simons matter theories

Congkao Wen Queen Mary University of London

December 18, 2012

PIRSA:12120005

Quantum Fields and Strings

In this talk we will present results on all one-loop scattering amplitudes in N=6 Chern-Simons matter theories. Especially we will discuss connection between certain triple-cut diagrams and tree-level recursive diagrams, and a general formula capturing the multi-particle factorization of arbitrary one-loop amplitudes in the theories is obtained from this connection. Furthermore a recursion relation for the supercoefficients of one-loop amplitudes will be derived, which leads the solution for all one-loop amplitudes.

Title	Date	Collection	Type	Info
12/13 PSI - String Theory Review Lecture 3	2013‑01‑09	12/13 PSI - String Theory Review	Course	View details
12/13 PSI - Standard Model Review Lecture 3	2013‑01‑09	12/13 PSI - Standard Model Review	Course	View details
Field-induced thermal transport in BEC antiferromagnets	2013‑01‑08	Quantum Matter	Scientific Series	View details
Worldsheet form factors in AdS/CFT	2013‑01‑08	Quantum Fields and Strings	Scientific Series	View details
12/13 PSI - Found Quantum Mechanics Lecture 2	2013‑01‑08	12/13 PSI - Found Quantum Mechanics	Course	View details
Fifth forces and new particles from dark energy	2013‑01‑08	Cosmology and Gravitation	Scientific Series	View details
12/13 PSI - String Theory Review Lecture 2	2013‑01‑08	12/13 PSI - String Theory Review	Course	View details
12/13 PSI - Standard Model Review Lecture 2	2013‑01‑08	12/13 PSI - Standard Model Review	Course	View details
12/13 PSI - Found Quantum Mechanics Lecture 1	2013‑01‑07	12/13 PSI - Found Quantum Mechanics	Course	View details
12/13 PSI - String Theory Review Lecture 1	2013‑01‑07	12/13 PSI - String Theory Review	Course	View details
12/13 PSI - Standard Model Review Lecture 1	2013‑01‑07	12/13 PSI - Standard Model Review	Course	View details
All one-loop amplitudes in N=6 Chern-Simons matter theories	2012‑12‑18	Quantum Fields and Strings	Scientific Series	View details

Format results