In physics, an effective field theory is a type of approximation, or effective theory, for an underlying physical theory, such as a quantum field theory or a statistical mechanics model. An effective field theory includes the appropriate degrees of freedom to describe physical phenomena occurring at a chosen length scale or energy scale, while ignoring substructure and degrees of freedom at shorter distances (or, equivalently, at higher energies). Intuitively, one averages over the behavior of the underlying theory at shorter length scales to derive what is hoped to be a simplified model at longer length scales. Effective field theories typically work best when there is a large separation between length scale of interest and the length scale of the underlying dynamics. Effective field theories have found use in particle physics, statistical mechanics, condensed matter physics, general relativity, and hydrodynamics. They simplify calculations, and allow treatment of dissipation and radiation effects. (Wikipedia).
Quantum field theory, Lecture 2
This winter semester (2016-2017) I am giving a course on quantum field theory. This course is intended for theorists with familiarity with advanced quantum mechanics and statistical physics. The main objective is introduce the building blocks of quantum electrodynamics. Here in Lecture 2
From playlist Quantum Field Theory
An Effective Field Theory of Quantum Black Hole Horizons - Walter Goldberger
High Energy Theory Seminar -- Monday, February 10, 2020 “An Effective Field Theory of Quantum Black Hole Horizons” Location: Bloomberg Lecture Hall (IAS) Time: 2:30 PM Speaker(s): Walter Goldberger, Yale University Description: I develop an effective theory which describes black hole
From playlist Natural Sciences
Field Theory - Algebraically Closed Fields - Lecture 9
In this video we define what an algebraically closed field and assert without proof that they exist. We also explain why if you can find a single root for any polynomial, then you can find them all.
From playlist Field Theory
Physics - E&M: Ch 36.1 The Electric Field Understood (1 of 17) What is an Electric Field?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain what is an electric field. An electric field exerts a force on a charged place in the field, can be detected by placing a charged in the field and observing the effect on the charge. The stren
From playlist THE "WHAT IS" PLAYLIST
Field Theory: Irreducible Polynomials
This video is about irreducible polynomials.
From playlist Basics: Field Theory
Field Theory - Algebraically Closed Fields (part 2) - Lecture 10
In this video we should that algebraically closed fields exist and are unique. We assume that the direct limit construction works. The construction here depends on the axiom of choice.
From playlist Field Theory
Effective Field Theory | MITx on edX | Course About Video
Effective Field Theory 8.EFTx is a graduate course on Effective Field Theory (EFT), which provides a fundamental framework to describe physical systems with quantum field theory. For residential students it is listed as 8.S851. About this Course The course described below will start Sep
From playlist MITx on edX course trailers
MIT 8.851 Effective Field Theory, Spring 2013 View the complete course: http://ocw.mit.edu/8-851S13 Instructor: Iain Stewart In this lecture, the professor discussed Marginal & (ir)relevant operators, Standard Model as and EFT, and started topic of field redefinitions. License: Creative
From playlist MIT 8.851 Effective Field Theory, Spring 2013
MIT 8.851 Effective Field Theory, Spring 2013 View the complete course: http://ocw.mit.edu/8-851S13 Instructor: Iain Stewart In this lecture, the professor discussed bubble sum for heavy quark mass, removing renormalon ambiguities with scale R, R-RGE, and all orders formula for Lambda_Q
From playlist MIT 8.851 Effective Field Theory, Spring 2013
1. Introduction to Effective Field Theory (EFT)
MIT 8.851 Effective Field Theory, Spring 2013 View the complete course: http://ocw.mit.edu/8-851S13 Instructor: Iain Stewart In this lecture, the professor discussed EFT of Hydrogen, top-down and bottom-up, and renormalizable EFT. License: Creative Commons BY-NC-SA More information at ht
From playlist MIT 8.851 Effective Field Theory, Spring 2013
Applications of Chiral Kinetic Theory by Naoki Yamamoto
DISCUSSION MEETING EXTREME NONEQUILIBRIUM QCD (ONLINE) ORGANIZERS: Ayan Mukhopadhyay (IIT Madras) and Sayantan Sharma (IMSc Chennai) DATE & TIME: 05 October 2020 to 09 October 2020 VENUE: Online Understanding quantum gauge theories is one of the remarkable challenges of the millennium
From playlist Extreme Nonequilibrium QCD (Online)
Supersymmetric Gauge Dynamics, Part 1 - Nathan Seiberg
Supersymmetric Gauge Dynamics, Part 1 Nathan Seiberg Institute for Advanced Study July 21, 2010
From playlist PiTP 2010
Recent Developments in Non-Equilibrium QFT by R. Loganayagam
DISCUSSION MEETING EXTREME NONEQUILIBRIUM QCD (ONLINE) ORGANIZERS: Ayan Mukhopadhyay (IIT Madras) and Sayantan Sharma (IMSc Chennai) DATE & TIME: 05 October 2020 to 09 October 2020 VENUE: Online Understanding quantum gauge theories is one of the remarkable challenges of the millennium
From playlist Extreme Nonequilibrium QCD (Online)
Daniel Friedan - Where does quantum field theory come from?
Daniel Friedan (Rutgers Univ.) Where does quantum field theory come from? This will be an interim report on a long-running project to construct a mechanism that produces spacetime quantum field theory; to indentify possible exotic, non-canonical low- energy phenomena in SU(2) and SU(3) gau
From playlist Conférence à la mémoire de Vadim Knizhnik
14. EFT with Fine Tuning Part 2
MIT 8.851 Effective Field Theory, Spring 2013 View the complete course: http://ocw.mit.edu/8-851S13 Instructor: Iain Stewart In this lecture, the professor discussed conformal invariance, SU(4) symmetry, calculations with the deuteron bound state, and started Soft-Collinear Effective theo
From playlist MIT 8.851 Effective Field Theory, Spring 2013
Symmetry in Quantum Gravity by Hirosi Ooguri
DATE: 15 January 2018, 16:00 to 17:30 VENUE: Ramanujan Lecture Hall, ICTS Bangalore General relativity and quantum mechanics were crowning achievements of physics in the 20th century, and their unification has been left as our homework in the 21st century. Superstring theory is our best
From playlist Kavli Asian Winter School (KAWS) on Strings, Particles and Cosmology 2018
Pau Figueras - Binary black hole mergers in cubic Horndeski theory - IPAM at UCLA
Recorded 26 October 2021. Pau Figueras of Queen Mary, University of London presents "Binary black hole mergers in cubic Horndeski theory" at IPAM's Workshop II: Mathematical and Numerical Aspects of Gravitation. Abstract: In this talk I will discuss binary black hole mergers in cubic Hornd
From playlist Workshop: Mathematical and Numerical Aspects of Gravitation
MIT 8.851 Effective Field Theory, Spring 2013 View the complete course: http://ocw.mit.edu/8-851S13 Instructor: Iain Stewart In this lecture, the professor finished field redefinitions, discussed loops, regularization and the impact on power counting. License: Creative Commons BY-NC-SA M
From playlist MIT 8.851 Effective Field Theory, Spring 2013
An Effective Theory for Warm QCD by Sourendu Gupta
Nonperturbative and Numerical Approaches to Quantum Gravity, String Theory and Holography DATE:27 January 2018 to 03 February 2018 VENUE:Ramanujan Lecture Hall, ICTS Bangalore The program "Nonperturbative and Numerical Approaches to Quantum Gravity, String Theory and Holography" aims to
From playlist Nonperturbative and Numerical Approaches to Quantum Gravity, String Theory and Holography