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The Physical World as a Virtual Reality
The Physical World as a Virtual Reality

... they look right, a right view is shown. Everywhere one looks, reality presents, but only when we look. Quantum theory now tells us that the same is true of our reality - that physical events only occur only when we observe them, just like in a video game. And just as when a computer game is busy the ...
Quantum Magic - UMD WordPress blog
Quantum Magic - UMD WordPress blog

... an odd number of bananas on each edge always tastes ordinary, either one banana or three bananas (and since there are just four bananas on an edge, an odd number tastes intense). Once you peel the bananas on two edges, the remaining bananas turn out to be inedible. • In the simulation game, Alice an ...
Change Without Time - Publikationsserver der Universität Regensburg
Change Without Time - Publikationsserver der Universität Regensburg

Squeezed light
Squeezed light

Maximal Newton polygons via the quantum Bruhat graph
Maximal Newton polygons via the quantum Bruhat graph

... F -crystals are indexed by combinatorial objects called Newton polygons, a family of lattice polygons in the plane. Kottwitz used the theory of algebraic groups to explicitly study the set of Newton polygons associated to any connected reductive group G over a discretely valued field. In particular, ...
Theoretical Studies of Ultrafast Correlated Electron
Theoretical Studies of Ultrafast Correlated Electron

... In this thesis, we first study the energy exchange via electron correlation upon photon absorption over large distances in the two-site double photoionization of the helium dimer, which is found to be a two-step process. In the first step, one electron in one atom absorbs the photon and gets ionized ...
Polarization profiles of polyvinylidene fluoride films polarized by a
Polarization profiles of polyvinylidene fluoride films polarized by a

Template for scientific report
Template for scientific report

Early Atomic Models – From Mechanical to Quantum
Early Atomic Models – From Mechanical to Quantum

... birth   of   the   quantum   atom   in   1913.     Beginning   with   almost   no   understanding   of   atoms   other   than   their   chemical   and   spectral   properties,   physicists   were   handed   important   clues   to   their   i ...
Colloquium: Multiparticle quantum superpositions and the quantum
Colloquium: Multiparticle quantum superpositions and the quantum

Exact solution of a massless scalar field with a relevant
Exact solution of a massless scalar field with a relevant

Quantum violation of classical physics in macroscopic systems
Quantum violation of classical physics in macroscopic systems

atom interferometer - Center for Ultracold Atoms
atom interferometer - Center for Ultracold Atoms

From Quantum Gates to Quantum Learning
From Quantum Gates to Quantum Learning

... states, and are characterized by a wave function . As an example (), it is possible to have light polarizations other than purely horizontal or vertical, such as slant 45 corresponding to the linear superposition of . In ternary logic, the notation for the superposition is , where , , and  are c ...
Spin relaxation in quantum dots with random spin
Spin relaxation in quantum dots with random spin

... to manipulate quickly the spins of electrons localized in quantum dots and to keep them in the desired states as long as necessary. The spin-orbit 共SO兲 coupling in QDs plays a crucial role for both the spin manipulation and lifetime of the prepared spin states. For example, the SO coupling allows th ...
Spontaneous emission of an atom in front of a mirror
Spontaneous emission of an atom in front of a mirror

Study of atomic energy shifts induced by Casimir
Study of atomic energy shifts induced by Casimir

THE BARE THEORY AND How TO FIX IT
THE BARE THEORY AND How TO FIX IT

UNRAVELING OPEN QUANTUM SYSTEMS: CLASSICAL
UNRAVELING OPEN QUANTUM SYSTEMS: CLASSICAL

Chem 110 2014 (Chapter 6)
Chem 110 2014 (Chapter 6)

... • Questions left unanswered: – How are electrons arranged & how do they move? – Electrons are moving charged particles – Moving charged particles give off energy – Atom should constantly be giving off energy – Electrons should crash into nucleus and atom collapse!! This led to Neil Bohr Model of the ...
Momentum-resolved tunneling into fractional
Momentum-resolved tunneling into fractional

... be visible as strong features in the differential tunneling conductance; see below. Contributions to the spectral function for all other values of N do not show such divergences and will give rise only to a featureless background in the conductance. With spectral functions for 2DES⬜ at hand, we are ...
Aharanov-Bohm Interference and Fractional Statistics - Eun
Aharanov-Bohm Interference and Fractional Statistics - Eun

Chapter 4 Formation length
Chapter 4 Formation length

Is the quantum mechanical description of physical reality complete
Is the quantum mechanical description of physical reality complete

... 2) All correlations observed by measurement with spatially separated (or any) detectors can be understood as due to local correlations set up at the source of multiple particles (point of interaction) and encoded as a fixed relative phase on the different particles . (2000-2002) 3) While classical c ...
here
here

... 39) D.Applebaum, Operator-valued stochastic differential equations arising from unitary group representations, Journal of Theoretical Probability 14, 61-76 (2001) 40) D.Applebaum, F.Tang, Stochastic flows of diffeomorphisms on manifolds driven by infinite dimensional semimartingales with jumps, Stoc ...
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Quantum electrodynamics



In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.
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