In physics, the Schwinger model, named after Julian Schwinger, is the model describing 1+1D (1 spatial dimension + time) Lorentzian quantum electrodynamics which includes electrons, coupled to photons. The model defines the usual QED Lagrangian over a spacetime with one spatial dimension and one temporal dimension. Where is the photon field strength, is the gauge covariant derivative, is the fermion spinor, is the fermion mass and form the two-dimensional representation of the Clifford algebra. This model exhibits confinement of the fermions and as such, is a toy model for QCD. A handwaving argument why this is so is because in two dimensions, classically, the potential between two charged particles goes linearly as , instead of in 4 dimensions, 3 spatial, 1 time. This model also exhibits a spontaneous symmetry breaking of the U(1) symmetry due to a chiral condensate due to a pool of instantons. The photon in this model becomes a massive particle at low temperatures. This model can be solved exactly and is used as a toy model for other more complex theories. (Wikipedia).
Raimar WULKENHAAR - Solvable Dyson-Schwinger Equations
Dyson-Schwinger equations provide one of the most powerful non-perturbative approaches to quantum field theories. The quartic analogue of the Kontsevich model is a toy model for QFT in which the tower of Dyson-Schwinger equations splits into one non-linear equation for the planar two-point
From playlist Talks of Mathematics Münster's reseachers
Physics - Ch 66 Ch 4 Quantum Mechanics: Schrodinger Eqn (17 of 92) How to Use Schrod. Eqn: 2
Visit http://ilectureonline.com for more math and science lectures! In this video I will show how to use the Schrodinger's equation, part 2/2. Next video in this series can be seen at: https://youtu.be/kO9JZgVXqyU
From playlist PHYSICS 66.1 QUANTUM MECHANICS - SCHRODINGER EQUATION
Waves and Particles C1 Schrodinger Equation
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From playlist Physics - Wave Particle Duality
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Quickstart für die Desktop Version Beispiel 3: Schnitt zweier Polynomfunktionen
From playlist Quickstart für die Desktop Version
Karel VAN ACOLEYEN - Tensor networks and the Schwinger model
https://indico.math.cnrs.fr/event/2435/
From playlist Workshop “Hamiltonian methods in strongly coupled Quantum Field Theory”
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Quickstart für die Desktop Version Beispiel 5: Schnitt einer Ebene mit einer Geraden
From playlist Quickstart für die Desktop Version
Discrete Chiral Symmetry and Mass Shift in Lattice Hamiltonian Approach to... - Igor Klebanov
IAS Physics Group Meeting Topic: Discrete Chiral Symmetry and Mass Shift in Lattice Hamiltonian Approach to Schwinger Model Speaker: Igor Klebanov Affiliation: Princeton University; Member, School of Natural Sciences, IAS June 15, 2022 We revisit the lattice formulation of the Schwinger
From playlist Physics Group Meeting
“The God Particle” is a sexy name, but many physicists absolutely hate it. It’s also led people to think that maybe the discovery of the Higgs boson has something to do with the search for God, but it doesn’t. Its discovery isn’t evidence of any sort of higher being and that’s not why scie
From playlist Seeker+
New constraints on transport from Schwinger Keldysh theory by Amos Yarom
ORGANIZERS : Pallab Basu, Avinash Dhar, Rajesh Gopakumar, R. Loganayagam, Gautam Mandal, Shiraz Minwalla, Suvrat Raju, Sandip Trivedi and Spenta Wadia DATE : 21 May 2018 to 02 June 2018 VENUE : Ramanujan Lecture Hall, ICTS Bangalore In the past twenty years, the discovery of the AdS/C
From playlist AdS/CFT at 20 and Beyond
Marginal triviality of the scaling limits of critical 4D Ising (Lecture 2) by Hugo Duminil-Copin
INFOSYS-ICTS RAMANUJAN LECTURES CRITICAL PHENOMENA THROUGH THE LENS OF THE ISING MODEL SPEAKER: Hugo Duminil-Copin (Institut des Hautes Études Scientifiques, France & University of Geneva, Switzerland) DATE: 09 January 2023 to 13 January 2023 VENUE: Ramanujan Lecture Hall Lecture 1 D
From playlist Infosys-ICTS Ramanujan Lectures
Hugo Duminil-Copin - 1/4 Triviality of the 4D Ising Model
We prove that the scaling limits of spin fluctuations in four-dimensional Ising-type models with nearest-neighbor ferromagnetic interaction at or near the critical point are Gaussian. A similar statement is proven for the λφ4 fields over R^4 with a lattice ultraviolet cutoff, in the limit
From playlist Hugo Duminil-Copin - Triviality of the 4D Ising Model
Understanding Quantum Field Theory
In a talk at Georgetown University, Dr. Rodney Brooks, author of "Fields of Color: The theory that escaped Einstein", shows why the answer is quantum field theory. He shows how quantum field theory, so often overlooked or misunderstood, resolves the weirdness of quantum mechanics and the
From playlist Quantum Field Theory
Loop-String-Hadron Dynamics in a SU(3) Lattice Gauge Theory by Indrakshi Raychowdhury
PROGRAM NONPERTURBATIVE AND NUMERICAL APPROACHES TO QUANTUM GRAVITY, STRING THEORY AND HOLOGRAPHY (HYBRID) ORGANIZERS: David Berenstein (University of California, Santa Barbara, USA), Simon Catterall (Syracuse University, USA), Masanori Hanada (University of Surrey, UK), Anosh Joseph (II
From playlist NUMSTRING 2022
Maschinen Krieger Scale Model Diorama!
While most people know about Gundam in the sci-fi scale model kit world, the universe of Maschinen Krieger is one that has some of the most striking mecha designs. We chat with Ma. K. builder Heng Wang about his mash-up build, the origins of Maschinen Krieger, and why its kits are so uniqu
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Maus has arrived ! WW2 German Tank Type and Size Comparison 3D Types Panzerartillerie - Self-propelled artillery Flakpanzer - Self-propelled anti-aircraft gun Sturmpanzer - Heavy assault gun Jagdpanzer - Self-propelled anti-tank gun Kampfpanzer - Tank Featuring Panzerhaubitze Wespe Stur
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Fundamental quantum physics in intense laser fields by Anton Ilderton
06 March 2017 to 17 March 2017 VENUE: Ramanujan Lecture Hall, ICTS Bangalore Particle accelerators have been instrumental in unraveling some of the deep questions related to matter at the fundamental level, the latest being discovery of the Higgs Boson. The conventional accelerators, how
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Quantum Mechanics and the Schrödinger Equation
Okay, it's time to dig into quantum mechanics! Don't worry, we won't get into the math just yet, for now we just want to understand what the math represents, and come away with a new and improved view of the electron as both a circular standing wave and a cloud of probability density. Spoo
From playlist Modern Physics
Quark matter in compact Stars by Thomas Klaehn
PROGRAM VIRTUAL MEETING ON COMPACT STARS AND QCD 2020 (ORIGINALLY "COMPACT STARS IN THE QCD PHASE DIAGRAM VIII: THE ERA OF MULTI-MESSENGER ASTRONOMY") ORGANIZERS: Manjari Bagchi, Sarmistha Banik, Sudip Bhattacharyya, Prashanth Jaikumar, V. Ravindran and Sayantan Sharma DATE: 17 August