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Integer Quantum Hall Effect for Bosons
Integer Quantum Hall Effect for Bosons

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AlumniDay_IOP_2 - Princeton University

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Historical Perspective

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Lecture Notes for the 2014 HEP Summer School for Experimental

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ppt - Rencontres de Moriond

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TT 61: Correlated Electrons: (General) Theory 2 - DPG

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PowerPoint Presentation - Gravity on quantized space-times

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... a) K+p → Λπ+π+ b) K-p → Λn c) K0 → π+πK + = su ■ First we should figure out which forces are involved in the reaction. K − = su ■ All three reactions involve only strongly interacting particles (no leptons) K 0 = sd ☞ it is natural to consider the strong interaction first. a) Not possible via str ...
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How to Quantize Yang-Mills Theory?

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Slides - Agenda INFN

The Origin of Mass - Massachusetts Institute of Technology
The Origin of Mass - Massachusetts Institute of Technology

... such as the interaction between electrons, as shown in 1b. Quantum chromodynamics (QCD) can be summarized similarly, but with a more elaborate set of ingredients and hubs. There are three kinds of charges, called colors. Quarks resemble electrons in their mechanical properties (technically, they are ...
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PowerPoint-Präsentation

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Wigner and Nambu–Goldstone Modes of Symmetries

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10 Supersymmetric gauge dynamics: N = 1 10.1 Confinement and

... is not a conserved quantum number in strong interactions), but rather of a shifting mass of chromoelectric flux lines. Unlike gluons, for which a mass term is forbidden (because they have only two polarizations), glueballs include scalars and vectors with three polarizations (as well as higher spin ...
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... The interacting fields obey the same commutation relations as the free fields. The plane waves (spinor solutions, free photons, and free mesons) are still solutions of the equations of motion and lead to the same expansion of the field operators as in the free case. The Feynman propagators are s ...
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Symmetry Priniciples And Conservation Laws

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Solving quantum field theories via curved spacetimes

... In a theory of phase transitions, correlation functions encode the critical exponents and other useful information. A universal operator, present in any field theory, is the symmetric stress–energy tensor Tμν. As in electrodynamics, its time–time component T00 gives the energy density of a field, th ...
ppt - Quark Matter 2005
ppt - Quark Matter 2005

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Technicolor (physics)

Technicolor theories are models of physics beyond the standard model that address electroweak gauge symmetry breaking, the mechanism through which W and Z bosons acquire masses. Early technicolor theories were modelled on quantum chromodynamics (QCD), the ""color"" theory of the strong nuclear force, which inspired their name.Instead of introducing elementary Higgs bosons to explain observed phenomena, technicolor models hide electroweak symmetry and generate masses for the W and Z bosons through the dynamics of new gauge interactions. Although asymptotically free at very high energies, these interactions must become strong and confining (and hence unobservable) at lower energies that have been experimentally probed. This dynamical approach is natural and avoids issues of Quantum triviality and the hierarchy problem of the Standard Model.In order to produce quark and lepton masses, technicolor has to be ""extended"" by additional gauge interactions. Particularly when modelled on QCD, extended technicolor is challenged by experimental constraints on flavor-changing neutral current and precision electroweak measurements. It is not known what is the extended technicolor dynamics.Much technicolor research focuses on exploring strongly interacting gauge theories other than QCD, in order to evade some of these challenges. A particularly active framework is ""walking"" technicolor, which exhibits nearly conformal behavior caused by an infrared fixed point with strength just above that necessary for spontaneous chiral symmetry breaking. Whether walking can occur and lead to agreement with precision electroweak measurements is being studied through non-perturbative lattice simulations.Experiments at the Large Hadron Collider are expected to discover the mechanism responsible for electroweak symmetry breaking, and will be critical for determining whether the technicolor framework provides the correct description of nature. In 2012 these experiments declared the discovery of a Higgs-like boson with mass approximately 7002125000000000000♠125 GeV/c2; such a particle is not generically predicted by technicolor models, but can be accommodated by them.
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