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Why I Still Like String Theory
Why I Still Like String Theory

... as another idea that may be more interesting. Really though I dont see these as alternatives. The “alternatives theory view” is a social construct that came out of in-fighting between physicists. There is only one right theory of quantum gravity and if more than one idea seems to have good features ...
Electric Field Control of Magnetic Coupling in a Double Quantum
Electric Field Control of Magnetic Coupling in a Double Quantum

... namely the weak coupling regime (in case when the dot-lead coupling dominates the direct dot–dot hopping) and its alternative. In the weak coupling regime electrons are localized on an individual QD and in this case both quantum dots QD1 and QD2 can be considered separately. When the opposite limit ...
Matt`s talk about our observation of quantum
Matt`s talk about our observation of quantum

Homework4 - Purdue Engineering
Homework4 - Purdue Engineering

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Lecture 10

Mathematics and Physics of Anderson Localization
Mathematics and Physics of Anderson Localization

$doc.title

Symmetries and conservation laws in quantum me
Symmetries and conservation laws in quantum me

... (by integrating the density over all space) the total conserved quantity (often referred to as the CHARGE). All of these observables can be promoted to quantum operators by writing them in terms of the field variables and their corresponding momenta (e.g. the φn s and the corresponding pn s for our ...
chem 3374a quantum chemistry and spectroscopy
chem 3374a quantum chemistry and spectroscopy

All forces arise from the interactions between different objects
All forces arise from the interactions between different objects

... The duality symmetry that obscures our ability to distinguish between large and small distance scales is called T-duality, and comes about from the compactification (see reference [1]) of extra space dimensions in a ten-dimensional superstring theory. A particle has the property of momentum, whereas ...
Solutions of the Equations of Motion in Classical and Quantum
Solutions of the Equations of Motion in Classical and Quantum

... this Poisson bracket Lie algebra in terms of the commutator Lie algebra of linear operators in the Hilbert space. In: addition, one postulates that all the operators which represent the dynamical variables in the quantum theory have the same form, when they are expressed in terms of the canonical op ...
gauge theory - CERN Indico
gauge theory - CERN Indico

... • Eightfold way. Strongly interacting particles (hadrons) could be grouped into octets and decuplets. Gell-Mann (1961) and Ne’eman (1961) showed that this could be explained by a more approximate SU(3) symmetry — now understood as a symmetry of the three lightest quarks (u,d,s). Electroweak symmetry ...
Deflection with electric and magnetic fields
Deflection with electric and magnetic fields

Deflection with electric and magnetic fields
Deflection with electric and magnetic fields

TAP 413-3: Deflection with electric and magnetic fields
TAP 413-3: Deflection with electric and magnetic fields

Full text in PDF form
Full text in PDF form

... such a way that their form is identical for coordinate systems of any kind of states of motion. To accomplish this is the task of the general theory of relativity. On the other hand, we deduce from the restricted theory the existence of a Riemannian metric within the time-space continuum, which, acc ...
view as pdf - KITP Online
view as pdf - KITP Online

... Lattice simulations with dynamical fermions Consider general class of models including lattice gauge theories ...
Space-Time
Space-Time

Cavity QED 1
Cavity QED 1

Relativistic theory of particles with arbitrary intrinsic angular
Relativistic theory of particles with arbitrary intrinsic angular

APS March Meeting 2015
APS March Meeting 2015

... mappings to the “Babbage equation” F(F(z)) = z with F a map linking weak to strong coupling theories. Under fairly general conditions F may only be a specific conformal transformation of the fractional linear type. This deep general result has enormous practical consequences. For example, one can es ...
Greco1 - INFN - Torino Personal pages
Greco1 - INFN - Torino Personal pages

... This exactly equivalent to the Equation for the denity matrix or the Schr. Eq. NO APPROXIMATION but allows an approximation where h does not appear explicitly and still accounting for quantum evolution when the gradient of the potential are not too strong : ...
Chapter 9 review
Chapter 9 review

Effective Field Theory Description of the Higher Dimensional
Effective Field Theory Description of the Higher Dimensional

... by ZH has orbital degrees of freedom scaling with R 4 and internal isospin degree of freedom scaling with R 2 . Therefore, the total configuration space is 6-dimensional [1]. This can also been seen from the second Hopf map S 7 → S 4 , which was the central mathematical construct used by ZH. S 7 des ...
The Quantum Model of the Atom
The Quantum Model of the Atom

... • Proposed a model of the hydrogen atom that linked the atom’s electron with photon emission • Electron can circle the nucleus only in allowed paths, orbits • Electron can neither gain nor lose energy • “the single electron of hydrogen orbits the nucleus only in allowed orbits, each with a fixed ene ...
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History of quantum field theory

In particle physics, the history of quantum field theory starts with its creation by Paul Dirac, when he attempted to quantize the electromagnetic field in the late 1920s. Major advances in the theory were made in the 1950s, and led to the introduction of quantum electrodynamics (QED). QED was so successful and ""natural"" that efforts were made to use the same basic concepts for the other forces of nature. These efforts were successful in the application of gauge theory to the strong nuclear force and weak nuclear force, producing the modern standard model of particle physics. Efforts to describe gravity using the same techniques have, to date, failed. The study of quantum field theory is alive and flourishing, as are applications of this method to many physical problems. It remains one of the most vital areas of theoretical physics today, providing a common language to many branches of physics.
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