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- Philsci
- Philsci

... An agent who adopts the sum rule clearly will not accept (2); if there are n eigenstates, then the total value of the game on the right is nk + ixi, whereas the total value on the left is k + ixi. But as noted above, the sum rule is perfectly consistent with additivity; since the sum rule simply a ...
Section 7.5 Quantum Mechanics and the Atom
Section 7.5 Quantum Mechanics and the Atom

PDF Full-text
PDF Full-text

... • In 1963 [10], Dirac constructed a representation of the (3 + 2) deSitter group using two harmonic oscillators. This deSitter group contains three (3 + 1) Lorentz groups as its subgroups. In each of these papers, Dirac presented the original ingredients which can serve as building blocks for making ...
無投影片標題 - Shaw Communications
無投影片標題 - Shaw Communications

Diapositiva 1 - Applied Quantum Mechanics group
Diapositiva 1 - Applied Quantum Mechanics group

Generalising Unitary Time Evolution
Generalising Unitary Time Evolution

... It is clear that something is to be gained from applying the quantum formalism to the description of systems not generally considered physical [1, 4, 14, 16, 23]. However, despite this initial promise, there are many elements of quantum theory that have yet to be properly applied within this framewo ...
YANG-MILLS THEORY 1. Introduction In 1954, Yang and Mills
YANG-MILLS THEORY 1. Introduction In 1954, Yang and Mills

Ch-5
Ch-5

... We saw in Chapter 4 the importance of probability distributions in the analysis of data samples, and observed that we are usually interested in the integrals or sums of such distributions over specified ranges. Although we have considered only experiments that are described by a single distribution, ...
O_4 Theory (III) QUANTUM MECHANICAL STUDY OF THE FLEISCHMANN-PONS EFFECT
O_4 Theory (III) QUANTUM MECHANICAL STUDY OF THE FLEISCHMANN-PONS EFFECT

... The Fleischmann-Pons Effect [1] (FPE) was swiftly rejected when published in 1989, yet a significant number of researchers have since reported energy gains in similar experiments; for a review see ref. [2]. These gains have been associated with “cold fusion” or Low Energy Nuclear Reactions (LENR) wh ...
The Family Problem: Extension of Standard Model with a Loosely
The Family Problem: Extension of Standard Model with a Loosely

... gauge bosons become massive while the remaining Higgs are also massive.  This is the basic framework. The standard model is the gauge theory based on the group SU_c(3) × SU(2) × U(1). Now the simple extension is that based on SU_c(3) ...
From atoms to the periodic table
From atoms to the periodic table

... know  both  the  posi9on  and  momentum  of  a  quantum   par9cle  like  an  electron.  It  is  not  difficult,  it  is   fundamentally  impossible.  This  theory  is  known  as   Heisenberg’s  Uncertainty  Principle.  In  a  very  simple ...
powerpoint
powerpoint

... My favorite question when talking to people about psychic experiences is to ask "What is your superpower?". Everyone has superpowers, even if their individual beliefs may hinder their development. This talk is for you, whether you disbelieve in superpowers because "science says it impossible" or you ...
Reversible Classical Circuits and the Deutsch
Reversible Classical Circuits and the Deutsch

Grand-canonical ensembles
Grand-canonical ensembles

... where α, β are treated as independent variables while we take the derivatives, after which we can set α = βµ. Similarly, we can calculate averages of hH2 i, hN 2 i, hHN i, ..., but using the proper number of derivatives with respect to α and β. If you do not like this, use the trick with introducing ...
Identical Quantum Particles and Weak Discernibility - Philsci
Identical Quantum Particles and Weak Discernibility - Philsci

Learning material
Learning material

Detectors for microscopy - CCDs, sCMOS, APDs and PMTs
Detectors for microscopy - CCDs, sCMOS, APDs and PMTs

... “A sensor's sensitivity indicates how much the sensor's output changes when the input quantity being measured changes (ratio between output signal and measured property)” • Sensitivity is a horrible word which is often confused with Quantum Efficiency, Pixel Size, Signal and Signal to Noise • some k ...
Interpretation of quantum mechanics - Institut für Physik
Interpretation of quantum mechanics - Institut für Physik

et al.
et al.

... ・Large exciton binding energy. ・Strong absorption of exciton groundstate. ・High speed optical modulation device. ・High performance laser device. ...
Counting Quanta with Occam`s Razor
Counting Quanta with Occam`s Razor

THE TOWNSEND IONIZATION OOEFFICIENTS IN OROSSED
THE TOWNSEND IONIZATION OOEFFICIENTS IN OROSSED

Generation of polarization-entangled photon pairs in a cascade of
Generation of polarization-entangled photon pairs in a cascade of

- Europhysics News
- Europhysics News

Firefly-On-Demand
Firefly-On-Demand

... Introduction The fundamental science objective of the FOD concept is to answer the following key question: What are the details of the production mechanism for TGFs and the associated energetic electrons? To answer this question, FOD will combine simultaneous measurements of: a) gamma rays produced ...
Elements of Statistical Mechanics
Elements of Statistical Mechanics

... interchanging similar states equals the wavefunction after interchanging similar states. Combining (or adding, literally speaking) the above statement with the fundamental symmetry of the Fermi –Dirac system leads us to conclude that the wavefunction of the system before interchanging equals zero. T ...
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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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