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1 Dark Matter as a consequence of electric charge non
1 Dark Matter as a consequence of electric charge non

Kurt Symanzik—a stable fixed point beyond triviality
Kurt Symanzik—a stable fixed point beyond triviality

Slide 1
Slide 1

Density Matrices and the Weak Quantum Numbers
Density Matrices and the Weak Quantum Numbers

Gravity, Particle Physics and Their Unification 1 Introduction
Gravity, Particle Physics and Their Unification 1 Introduction

Towards Understanding the Internal Symmetries of Nature: Gauge
Towards Understanding the Internal Symmetries of Nature: Gauge

Law of Conservation of Muons
Law of Conservation of Muons

... This argument therefore leads directly to a multiplicative conservation law of "muon parity. If no particular model is assumed for the weak interactions, no stronger, additive, conservation law is implied. Of course, we cannot rule out the possibility that there is an additive quantum number, which ...
Asymptotic Symmetries and Electromagnetic Memory
Asymptotic Symmetries and Electromagnetic Memory

R measurement and QCD study in the full BEPCII energy region
R measurement and QCD study in the full BEPCII energy region

String Theory
String Theory

... String theory • The extra dimensions are hidden a la Kaluza, Klein theory (1921) • Supersymmetry is there but broken (somehow) • The fact that these aren’t observed at current scales is in no sense a theoretical problem, the natural scale for such things would be the string scale ie. around the pla ...
PowerPoint
PowerPoint

... the fundamental assumptions could break down in some cases. 2. evaluation of correlation functions are done within classical or high-temperature approximations. not valid with strong quantum fluctuations ...
From Sets to Quarks
From Sets to Quarks

Landau Levels and Quantum Group
Landau Levels and Quantum Group

a ∇ µ
a ∇ µ

... SU(3) classical gauge field does not interact with ordinary matter because ordinary matter is colorless. Thus one can suppose that SU(3) gauge field can be invisible matter in galaxies. The problem for such consideration is why the gauge field do not fill all Universe ? The probable answer is that, ...
Vacuum Bubbles Nucleation and Dark Matter Production through
Vacuum Bubbles Nucleation and Dark Matter Production through

... no “transversality” in one spatial dimension, the concept of spin is undefined, and the notion of “ vector field”, massless or massive, is purely formal. Thus, there is no radiation field associated with the Maxwell tensor. There is, however, the same background vacuum energy and long range static i ...
Flavour from accidental symmetries
Flavour from accidental symmetries

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GeoSym-QFT

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Flavor Beyond Standard Model

... of our current understanding of particle physics. These transitions are forbidden at tree level in the SM, as all electrically neutral particles have only diagonal couplings in the flavor space. FCNC processes are therefore only allowed through loop contributions and probe the underlying fundamental ...
Many_1 - USU physics
Many_1 - USU physics

... In either of these cases, if two of the fermion detector positions are the same, so that two positions and two spins have the same indices (detectors measure spatial and spin quantum numbers), the wavefunction also vanishes: in other words, two identical fermions cannot occupy the same position in s ...
Quantum Information Processing Theory
Quantum Information Processing Theory

Conservation Laws I - Department of Physics, HKU
Conservation Laws I - Department of Physics, HKU

Folds, Bosonization and non-triviality of the classical limit of 2D
Folds, Bosonization and non-triviality of the classical limit of 2D

The Basic Laws of Nature: from quarks to cosmos
The Basic Laws of Nature: from quarks to cosmos

document
document

Abstracts  - Departamento de Matemáticas
Abstracts - Departamento de Matemáticas

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Quantum chromodynamics

In theoretical physics, quantum chromodynamics (QCD) is the theory of strong interactions, a fundamental force describing the interactions between quarks and gluons which make up hadrons such as the proton, neutron and pion. QCD is a type of quantum field theory called a non-abelian gauge theory with symmetry group SU(3). The QCD analog of electric charge is a property called color. Gluons are the force carrier of the theory, like photons are for the electromagnetic force in quantum electrodynamics. The theory is an important part of the Standard Model of particle physics. A huge body of experimental evidence for QCD has been gathered over the years.QCD enjoys two peculiar properties:Confinement, which means that the force between quarks does not diminish as they are separated. Because of this, when you do separate a quark from other quarks, the energy in the gluon field is enough to create another quark pair; they are thus forever bound into hadrons such as the proton and the neutron or the pion and kaon. Although analytically unproven, confinement is widely believed to be true because it explains the consistent failure of free quark searches, and it is easy to demonstrate in lattice QCD.Asymptotic freedom, which means that in very high-energy reactions, quarks and gluons interact very weakly creating a quark–gluon plasma. This prediction of QCD was first discovered in the early 1970s by David Politzer and by Frank Wilczek and David Gross. For this work they were awarded the 2004 Nobel Prize in Physics.The phase transition temperature between these two properties has been measured by the ALICE experiment to be well above 160 MeV. Below this temperature, confinement is dominant, while above it, asymptotic freedom becomes dominant.
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