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d5670ef45a7bf277 | Decoherence and the Transition from Quantum to Classical
Wojciech Zurek Physics Today Oct 91 (abridged)
Quantum mechanics works exceedingly well in all practical applications. No example of conflict between its predictions and experiment is known. Without quantum physics we could not explain the behavior of solids, the... |
2cb28e4df088a9cd | Friday, April 29, 2011
Octonions and quantum physics
Peter Woit reports in "This Week's Hype" string model hype about classical number fields, in particular the possible role of octonions. It would be nice to write a comment and tell how elegantly classical number fields appear in TGD framework and make dual descript... |
cfacc75acb6966a6 | Skip navigation
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Rogue wave observation in a Water Wave Tank
Chabchoub, A; Hoffmann, N P; Akhmediev, Nail
The conventional definition of rogue waves in the ocean is that their heights, from crest to trough, are more than about twice the significant wave height, which is the average wave height of the... |
2e478ae58d8cbb8c | Wednesday, April 29, 2015
What could be the origin of p-adic length scale hypothesis?
The argument would explain the existence of preferred p-adic primes. It does not yet explain p-adic length scale hypothesis stating that p-adic primes near powers of 2 are favored. A possible generalization of this hypothesis is tha... |
d3e2916d990807e7 | Branches as hidden nodes in a neural net
[Download MP4] [Other options]
Models of decoherence and branching
[This is akin to a living review, which will hopefully improve from time to time. Last edited 2017-11-26.]
This post will collect some models of decoherence and branching. We don’t have a rigorous defini... |
685b31b6b5c9cd7d | Can quantum computing be simulated by an optical network? | PhysicsOverflow
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647fcaf0f84bbaff | Collect. Czech. Chem. Commun. 2004, 69, 141-176
Convergence Behavior of Symmetry-Adapted Perturbation Expansions for Excited States. A Model Study of Interactions Involving a Triplet Helium Atom
Michał Przybytek, Konrad Patkowski and Bogumił Jeziorski*
The convergence behavior of symmetry-adapted perturbation theo... |
dd047ccc29ae58b4 | Take the 2-minute tour ×
Electrons in an atom have quantized energy quantity. Can uncertainty principle be applied in this case, then?
How does this work?
As energy is fixed, this seems to disobey $\Delta E \Delta t \geq \hbar/2$...
share|improve this question
add comment
1 Answer
up vote 3 down vote accepted
Yo... |
5684dc72a16e0a3e | zbMATH — the first resource for mathematics
a & b logic and
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6b26be0dd2c23eb9 | Discover Interview: Roger Penrose Says Physics Is Wrong, From String Theory to Quantum Mechanics
One of the greatest thinkers in physics says the human brain—and the universe itself—must function according to some theory we haven't yet discovered.
By Susan Kruglinski, Oliver Chanarin|Tuesday, October 06, 2009
Roger ... |
516714e090eb9bff | Essential Computational Modeling in Chemistry book cover
Essential Computational Modeling in Chemistry
• Philippe Ciarlet, City University of Hong Kong, Kowloon
Essential Computational Modeling in Chemistry presents key contributions selected from the volume in the Handbook of Numerical Analysis: Computational Mod... |
6a1c3a97de4ba485 |
Open Access Nano Express
Singly ionized double-donor complex in vertically coupled quantum dots
Ramón Manjarres-García1, Gene Elizabeth Escorcia-Salas1, Ilia D Mikhailov2 and José Sierra-Ortega1*
Author affiliations
1 Group of Investigation in Condensed Matter Theory, Universidad del Magdalena, Santa Marta, Colom... |
bc50291f86f1501b | KdV '95 - 100 Years Korteweg - De Vries Equation
by Henk Nieland
Hundred years ago an article appeared in the well-known British journal Philosophical Magazine, written by the Dutch mathematicians Korteweg and De Vries. It described the behaviour of certain types of waves occurring in a shallow canal in terms of a no... |
c5867afca0f8e08b | Orbital hybridisation
From Wikipedia, the free encyclopedia - View original article
(Redirected from Hybrid orbital)
Jump to: navigation, search
Not to be confused with s-p mixing in Molecular Orbital theory. See Molecular orbital diagram.
Historical development[edit]
Chemist Linus Pauling first developed the hy... |
35bce3f7c91cef35 | Nonadiabatic Molecular Dynamics in Three Different Flavors
February 26, 2018 to March 2, 2018
Location : CECAM-HQ-EPFL, Lausanne, Switzerland
EPFL on iPhone
Visa requirements
• Basile Curchod (Durham University, United Kingdom)
• Ivano Tavernelli (IBM-Zurich Research, Switzerland)
• Graham A. Worth (Univ... |
2ea5aca5a2025d88 | Quantum mechanics also rules astronomical processes
New research has discovered that quantum mechanics, which describes the world of the infinitely small, also serves to unveil the long-term evolution of the massive astrophysical objects that populate the Universe: they are governed by the same Schrödinger equation th... |
3d03ac164dec7d1e | Welcome to Matt Kalinski'sHomepage
Matt Kalinski's homepage
strongly localized Starkstates for Zeeman Hamiltonian
While considered within the Mathieu theory and spanned by the circular eigenstates of Hydrogen it is a direct example of Poincare reccurence theorem in a simple system when the full exact quantum reviv... |
02f4a077744ce8ea | Friday, June 08, 2018
Myths of Copenhagen
Discussing the Copenhagen interpretation of quantum mechanics with Adam Becker and Jim Baggott makes me think it would be worthwhile setting down how I see it. I don’t claim that this is necessarily the “right” way to look at Copenhagen (there probably isn’t a right way), and... |
cec7fe49de290902 | Neutron Optics
Neutron optics
The general class of experiments designed to emphasize the wavelike character of neutrons. Like all elementary particles, neutrons can be made to display wavelike, as well as particlelike, behavior. They can be reflected and refracted, and they can scatter, diffract, and interfere, like ... |
a94a482acb847e0e | Multiverse January 2017
The Many Mice Theory of Quantum Mechanics
The father of the quantum multiverse didn’t actually think of it as a multiverse.
By Peter Byrne
On April 14, 1954, Albert Einstein gave the last lecture of his life. Speaking to physics students at Princeton University, he remarked that although qua... |
8f46c0843e4e7ec0 | Learning About Atoms
The Science PLC at our school is considering what students should know about atoms in 8th and 9th grade science classes (including Physics First). Just recently, Amber (Strunk) Henry posted on Twitter:
This is my attempt to arrange the ideas.
Map of the Territory of Things to Know
Next Generat... |
dd3cad685a23b04b | Acta Physica Sinica
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3f6753fc29def204 | tisdag 15 november 2016
realQM vs Hartree-Fock and DFT
I have put up an updated version of realQM (real Quantum Mechanics) to be compared with stdQM (standard QM).
stdQM is based on a linear Schrödinger equation in a $3N$ dimensional wave function with global support for an atom with $N$ electrons, which is made com... |
be1b26cc22ea28e1 | Saturday, July 26, 2014
What Born's rule can't be derived from
Sean Carroll continues to abuse his blog to promote his pseudoscientific would-be research:
Why Probability in Quantum Mechanics is Given by the Wave Function Squared
The article advertises his May 2014 preprint written along with a philosophy student, Ch... |
1eafaa6eb3e11016 | Forget what you know | Jacob Barnett | TEDxTeen
Translator: Jaime Ochoa
Reviewer: Capa Girl Hey! I’m Jacob Barnett,
are you guys excited? (Cheers) Alright! I am here to tell you why you guys
should forget everything you know, right now! So, first thing you guys need to know: suppose you guys are
all doing your homewor... |
cbfeb0a599e6902b | Citation for this page in APA citation style. Close
Mortimer Adler
Rogers Albritton
Alexander of Aphrodisias
Samuel Alexander
William Alston
Louise Antony
Thomas Aquinas
David Armstrong
Harald Atmanspacher
Robert Audi
Alexander Bain
Mark Balaguer
Jeffrey Barrett
William Barrett
William Belsham
Henri Bergson... |
7384c0fad7e3e9e6 | A Single-atom optical excitation
Entanglement of neutral-atom chains by spin-exchange Rydberg interaction
Conditions to achieve an unusually strong Rydberg spin-exchange interaction are investigated and proposed as a means to generate pairwise entanglement and realize a SWAP-like quantum gate for neutral atoms. Grou... |
5af4769e1ddceeb9 | Causal fermion system - Wikiwand
For faster navigation, this Iframe is preloading the Wikiwand page for Causal fermion system.
Causal fermion system
From Wikipedia, the free encyclopedia
The theory of causal fermion systems is an approach to describe fundamental physics. Its proponents claim it gives quantum mechani... |
9a27059341c754b2 | Thursday, March 21, 2019
actual infinite falling (all-)together &/or chaosmos COLLAPSE
Musée d'Orsay/January 2018 (for more A/Z photography see portfolio here);
Clara Colosimo in Fellini's Prova d'orchestra;
Arquipélago dos Pombos Correios (o soverdouro);
The great abyss inframince (by A/Z, for more see here);
"... ... |
f97920433cdcc43d | Beauty-full exotic bound states at the LHC
Article: Beauty-full Tetraquarks
Authors: Yang Bai, Sida Lu, and James Osborn
Good Day Nibblers,
As you probably already know, a single quark in isolation has never been observed in Nature. The Quantum Chromo Dynamics (QCD) strong force prevents this from happening by what ... |
33036bb8f25ff0ee | What does quantum mechanics tell us about reality? Part II
This blog post follows on from a previous post, “What does quantum mechanics tell us about reality”, in which I tried to give a balanced and non-technical overview of some of the interpretations of quantum mechanics. In this post I will take a different approa... |
81e07ce2679f2375 | fredag 28 augusti 2015
Finite Element Quantum Mechanics 4: Spherically Symmetric Model
I have tested the new atomic model described in a previous post in setting of spherical symmetry with electrons filling a sequence of non-overlapping spherical shells around a kernel. The electrons in each shell are homogenized to ... |
7e79c73913e538ae | Skip to main content
Chemistry LibreTexts
Wave Function of Multi-electron Atoms
• Page ID
• Unlike hydrogenic atoms, the wavefunctions satisfying Schrödinger's equation for multi-electron atoms cannot be solved analytically. Instead, various techniques are used for giving approximate solutions to the wave functio... |
3d2c9be5437a169c | Planck constant
(Redirected from Planck's constant)
Jump to: navigation, search
File:MaxPlanckWirkungsquantums20050815 CopyrightKaihsuTai.jpg
The Planck constant (denoted ) is a physical constant that is used to describe the sizes of quanta. It plays a central part in the theory of quantum mechanics, and is named ... |
cfe091e540033ec8 | Photosynthesis – storage of solar energy by plants
We have seen how the body takes in energy and how it uses it. But before we can consume food to obtain the energy stored in it, that energy must have been stored there. This is the result of photosynthesis, which leads us to consider the chloroplast.
Chloroplast stru... |
61a871db7be81942 | Main Group Theory in Solid State Physics and Photonics: Problem Solving with Mathematica
Book cover Group Theory in Solid State Physics and Photonics: Problem Solving with Mathematica
While group theory and its application to solid state physics is well established, this textbook raises two completely new aspects. Fi... |
4bf9d14f4481be7e | Energy Shift of H-Atom Electrons Due to Gibbons-Hawking Thermal Bath
The electromagnetic shift of energy levels of H-atom electrons is determined by calculating an electron coupling to the Gibbons-Hawking ectromagnetic field thermal bath. Energy shift of electrons in H-atom is determined in the framework of non-relat... |
0879c17dc719dd48 | Harvard University,FAS
Fall 2003
Mathematics Math21b
Fall 2003
Linear Algebra and Differential Equations
Course Head: Oliver knill
Office: SciCtr 434
Email: knill@math.harvard.edu
The harmonic oscillator
Classical Harmonic Oscillator
Energy levels of the classical harmonic oscillator
d2/dx2 f(x) = c2 f(x)
is an ... |
860acb53841c93ef | {\displaystyle m'} where the probability density is zero. is in units of {\displaystyle r} 0 The energy of a photon is equal to Planck’s constant, h=6.626*10-34m2kg/s, times the speed of light in a vacuum, divided by the wavelength of emission. θ This explains also why the choice of p Bohr derived the energy of each or... |
b49f0e6c957a3204 | : The Electronic Structure Package for Quantum Computers
Jarrod R. McClean Google Inc., Venice, CA 90291 Ian D. Kivlichan Google Inc., Venice, CA 90291 Department of Physics, Harvard University, Cambridge, MA 02138 Damian S. Steiger Google Inc., Venice, CA 90291 Theoretische Physik, ETH Zurich, 8093 Zurich, CH ... |
88dc95a69a4e97d0 | Photoionization with Orbital Angular Momentum Beams
A. Picón, J. Mompart, J. R. Vázquez de Aldana, L. Plaja, G. F. Calvo, and L. Roso Grup d’Òptica, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain Servicio Láser, Universidad de Salamanca, E-37008 Salamanca, Spain Departamento de Matemáticas, E... |
8203ecb92f0567bd | Session 17 July 2021
The Living Force
FOTCM Member
Thank you all for another Brilliant session!
(Joe) In the US, there are certain states - notably Florida and Texas - which have been exemplary in their pushback against this Covid nonsense. They didn't lock down, they opened and returned to normal more quickly, etc.... |
abf801718a8f5765 | Category Archives: 3D complex numbers
De Padé approximations; why are they so good?
Already a few years back I wanted to write a post on the so called de Padé apprximations because they are so good at taking the logarithm of a matrix. For me the access to an internet application that calculated those logs from matrix... |
c476c4e7dc4a0d31 | Skip to main content
Quantum billiards with correlated electrons confined in triangular transition metal dichalcogenide monolayer nanostructures
Forcing systems through fast non-equilibrium phase transitions offers the opportunity to study new states of quantum matter that self-assemble in their wake. Here we study... |
8dba11577bf783d0 | Algorithm 919
Algorithm 919: A Krylov Subspace Algorithm for Evaluating the ϕ-Functions Appearing in Exponential Integrators. We develop an algorithm for computing the solution of a large system of linear ordinary differential equations (ODEs) with polynomial inhomogeneity. This is equivalent to computing the action o... |
d2ab1bab3ce3f9a6 | May 15, 2019
How to describe nuclear properties ab initio at a low computational cost?
Figure 1: Reach of ab initio methods: quasi-exact methods (orange), valence-space methods (green) and wave-function expansion methods (red).
The predictions of nuclear properties based on a realistic description of the strong inter... |
6e601b3d0be985f1 | Leticia Corral, Mexican Astrophysicist, Recognized For Correcting Stephen Hawking’s Theory
Discussion in 'News and Views' started by Allisiam, Jan 10, 2016.
1. Allisiam
Allisiam Well-Known Member
Leticia Corral, Mexican Astrophysicist, Recognized For Correcting Stephen Hawking’s Theory
By Latin Times... |
6a43fc321c61cf34 | You are here
Nuclear theory
Nuclear-reaction theory
The physics of low-energy nuclear reactions is essential to explain the evolution of the Universe. Nuclear reactions characterize the different phases in a variety of astrophysical environments, from hydrogen burning in main-sequence stars to explosive nucleosynthes... |
40fc3ea888c378ec | Tuesday, February 07, 2012
Last week, Subir Sachdev came to Munich to give three Arnold Sommerfeld Lectures. I want to take this opportunity to write about a subject that has attracted a lot of attention in recent years, namely applying AdS/CFT techniques to condensed matter systems like trying to write gravity duals... |
0bf46a24baac38f4 | Max Planck
Max Planck
Max planck.jpg
Max Karl Ernst Ludwig Planck
April 23, 1858
Kiel, Germany
Died October 4, 1947
Göttingen, Germany
Residence Flag of Germany.svg Germany
Nationality Flag of Germany.svg German
Field Physicist
Institutions University of Kiel
Humboldt-Universität zu Berlin
Georg-August-Universitä... |
0ea9bad036a23554 | Background and Motivation
The mathematical sciences play a vital part in all aspects of modern society. Without research and training in mathematics, there would be no engineering, economics or computer science; no smart phones, MRI scanners, bank accounts or PIN numbers. Mathematics is playing a key role in tackling ... |
ee94820eead78004 | principal quantum number
• atomic orbital designation
TITLE: orbital
...of numerals and letters that represent specific properties of the electrons associated with the orbitals—for example, 1s, 2p, 3d, 4f. The numerals, called principal quantum numbers, indicate energy levels as well as relative distance fr... |
0f0d89564cd0e2b9 | About this Journal Submit a Manuscript Table of Contents
Abstract and Applied Analysis
Volume 2014 (2014), Article ID 362985, 10 pages
Research Article
The Existence and Uniqueness Result for a Relativistic Nonlinear Schrödinger Equation
Department of Mathematics, South China University of Technology, Guangzhou, Guan... |
06199a387e9f894f | Wednesday, January 28, 2015
Igpay Atinlay
On page 258 of "The Annubis Gates" by Tim Powers, the hero, Brendan Doyle, is leafing through some ancient manuscript .. when he comes across this message, written in his own handwriting from his future self!
Can you read it?
I had some faint recollection of a child's (or g... |
25a57bf1b38e9a39 | tisdag 20 januari 2015
Funeral of Schrödinger's Cat in Sweden
Swedish physics professors Karl Erik Eriksson and Bengt Gustavsson performed a symbolic academic funeral of (i) Schrödinger's cat along with (ii) multiversa and (iii) probabilistic dice interpretations of quantum mechanis, in a worthy ceremony at the Alma-... |
ed73aa1d278fec3a | Research Highlights : Physics
The indecisive insulator
04 January 2008 (Volume 3 Issue 2)
Researchers are applying relativistic quantum theory to explain how graphene could switch from a metal to an insulator
Figure 1: In two dimensions, the electronic energy band in graphene follows a cone-shaped distribution, si... |
cd60b63eabf02f10 | Notable Names: Richard Feynman
What defines genius? Real genius, not just the smart kid in the back of the class with all the answers. People like Galileo, Da Vinci, Einstein. The brilliant minds that take standard concepts, turn them upside down, and show us exactly why it never made such sense to us before. They tak... |
16aa2514b535ecc2 |
There is an well-known infamous DICTUM:
-Second Quantization is a functor, First Quantization is a mystery-.
Indeed, second quantization is the "Fock functor", which builds the Fock space in a canonical way out of the Hilbert space of a single particle.
But, what about first quantization? There is probably no hop... |
35d545dcd9c6a6c5 | Interview with Research Fellow Terence Tao
September 2003
From an early age, you clearly possessed a gift for mathematics. What stimulated your interest in the subject, and when did you discover your talent for mathematical research? Which persons influenced you the most?
Ever since I can remember, I have enjoyed ma... |
e03f22be92b24bf0 | Digital Library of Mathematical Functions
About the Project
33 Coulomb FunctionsPhysical Applications
§33.22 Particle Scattering and Atomic and Molecular Spectra
§33.22(i) Schrödinger Equation
With e denoting here the elementary charge, the Coulomb potential between two point particles with charges Z_{1}e,Z_{2}e an... |
536f39462760551d | Intro to Quantum Mechanics
This page is intended to give an ordinary person a brief overview of the importance and wonder of quantum mechanics. Unfortunately, most people believe you need the mind of Einstein in order to understand QM so they give up on it entirely. (Interesting side note: Einstein didn't believe... |
ff9a9f3afcad5448 | Free chemistry software - molecular modeling
Molecular modeling is a very large and important field of chemistry. As computers have increased in raw computing power, the usage of computers to calculate molecular properties is not a specialized fields for the few. Today, every chemist can perform calculation for even l... |
9efde7a1f3d8f38e |
Time crystals would be a perpetuum mobile
One of the widely shared recent articles at was
Time crystals—how scientists created a new state of matter
What's going on?
Already at this point, you may see a misconception that leads to Wilczek's impossible proposals. There's a very general implicit problem in his u... |
1c6b72c543caab30 | viernes, 7 de mayo de 2010
• is a consequence of quantum theory that affects virtually all physical systems
• arises from unavoidable interaction of these systems with their natural environment
• explains why macroscopic systems seem to possess their familiar classical properties
No additional classical ... |
a22ed626387bee70 | partial differential equation
partial differential equation
In mathematics, an equation that contains partial derivatives, expressing a process of change that depends on more than one independent variable. It can be read as a statement about how a process evolves without specifying the formula defining the process. G... |
c8fdd12d222c45f9 | From Wikipedia, the free encyclopedia
(Redirected from Energies)
Jump to: navigation, search
This article is about the scalar physical quantity. For an overview of and topical guide to energy, see Outline of energy. For other uses, see Energy (disambiguation).
"Energetic" redirects here. For other uses, see Energetic... |
5f0347f93cec651d | Notes to Action at a Distance in Quantum Mechanics
1. Intuitively, the spin-component of a particle in a certain direction can be thought of as its intrinsic angular momentum along that direction. But, as we shall see in section 5, the nature of spin properties depends on the interpretation of quantum mechanics. In an... |
4a8065ed69778522 | Viewpoint: Reconnecting to superfluid turbulence
Joseph J. Niemela, The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, 34014 Trieste, Italy
Published October 6, 2008 | Physics 1, 26 (2008) | DOI: 10.1103/Physics.1.26
Images of vortex motion in superfluid helium reveal connections be... |
71192bc7a4842bf0 | Go to previous page Go up Go to next page
4.2 Quantum models
4.2.1 Bose-Einstein condensates
We have seen that one of the main aims of research in analogue models of gravity is the possibility of simulating semiclassical gravity phenomena, such as the Hawking radiation effect or cosmological particle production. In ... |
ac73a2c7f8c8bb7d | Superfluid vacuum theory
From Wikipedia, the free encyclopedia
(Redirected from Logarithmic BEC vacuum)
Jump to: navigation, search
Superfluid vacuum theory (SVT), sometimes known as the BEC vacuum theory, is an approach in theoretical physics and quantum mechanics where the fundamental physical vacuum (non-removab... |
9a7d69f5f513f53c | Take the 2-minute tour ×
In my notes, I have the Time Independent Schrodinger equation for a free particle $$\frac{\partial^2 \psi}{\partial x^2}+\frac{p^2}{\hbar^2}\psi=0\tag1$$
The solution to this is given, in my notes, as $$\Large \psi(x)=C e^\left(\frac{ipx}{\hbar}\right)\tag2$$
Now, since (1) is a second order... |
3af10ff4bac37c1c | Schrödinger equation
From Wikipedia, the free encyclopedia
Jump to: navigation, search
In quantum mechanics, the Schrödinger equation is a partial differential equation that describes how the quantum state of a physical system changes with time. It was formulated in late 1925, and published in 1926, by the Austrian p... |
06af11a2f9d6204c | Sunday, June 28, 2015
Thinking outside the quantum box
Doctor: Don't tell me you're lost too.
Shardovan: No, but as you guessed, Doctor, we people of Castrovalva are too much part of this thing you call the occlusion.
Doctor: But you do see it, the spatial anomaly.
Shardovan: With my eyes, no — but, in my philoso... |
4e9f126300cae654 | fredag 9 maj 2014
Why Insist on Quantum Mechanics Based on Magic and Contradiction?
The ground state of Helium is postulated to be $1s^2$ with two overlaying electrons with opposite spin and identical spherically symmetric spatial wave-functions in the first shell, which is not the ground state because its energy is ... |
24f0c1c872490dc5 | Monday, August 29, 2016
Interpreted programming languages
Last night I drifted off while reading a Lisp book.
xkcd 224.
It's finally registered on me that much of the past half century of misunderstandings and confusions about the semantics of Lisp, of quotation, and, yes, of fexprs, can be accounted for by failure ... |
bd2ba152f5e5c18a | June 2, 2021
International team including University of Calgary researcher proves 'imaginary' numbers have real function in quantum world
Faculty of Science mathematician on team that showed complex numbers are necessary for distinguishing quantum states
Visualize putting two apples on a table. That number “2” is ea... |
f480eae7d2e07a02 | All Issues
Volume 41, 2021
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Volume 35, 2015
Volume 34, 2014
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Volume 30, 2011
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Volume 28, 2010
Volume 27, 2010
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Volume 24, 2009
Vo... |
8a48c7f161452103 | Making Sense Of Quantum Mechanics: Geometric Quantum Theory
The theory of quantum mechanics lies at the basis of our modern understanding of how microscopic particles such as electrons and atomic nuclei behave. Despite this fact, controversy on what it actually says about the physical world has accompanied the further... |
a9353937632c5c14 | @article{2716, abstract = {Multi-dimensional mean-payoff and energy games provide the mathematical foundation for the quantitative study of reactive systems, and play a central role in the emerging quantitative theory of verification and synthesis. In this work, we study the strategy synthesis problem for games with su... |
fc4aedae94f17528 | Lasers, chaos and bow-ties
Physics World 11 (#9), 23-24 (September 1998) -- Physics in Action
From Malvin C. Teich in the Department of Electrical and Computer Engineering, Boston University, US
Since the invention of the laser nearly 40 years ago, there has been an inexorable trend towards creating devices that are... |
c00b67ba8651b557 | Quantum cascade laser
From Wikipedia, the free encyclopedia
Jump to: navigation, search
Quantum cascade lasers (QCLs) are semiconductor lasers that emit in the mid- to far-infrared portion of the electromagnetic spectrum and were first demonstrated by Jerome Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albe... |
00a8f04f5057f707 | Psychology Wiki
Introduction to physics
34,189pages on
this wiki
Redirected from Physics
This article needs rewriting to enhance its relevance to psychologists..
Please help to improve this page yourself if you can..
Physics (from the Greek, φύσις (phúsis), "nature" and φυσικός (phusikós), "natural"), the most ... |
96dbb992c09a4f13 | ARRA-enabled 'Barracuda' computing cluster allows scientists to team up on larger problems
Within the Department of Energy’s (DOE) EMSL, new high-performance computing breakthroughs often are the result of combining the best of two worlds. Experimental and computational tools are integrated; suites of leading-edge har... |
06c2b93c3e0d4f4d | Give to MAT
More Research Spotlights: << | >>
Multimodal Representation of Quantum Mechanics:
"The Hydrogen Atom"
Professor JoAnn Kuchera-Morin, Media Arts and Technology, professor Luca Peliti, Physics Department, and PhD student Lance Putnam, Media Arts and Technology
As the sciences increasingly rely on mat... |
b5f936c04a6a23ee | Creation, Providence, and Miracle
Creation, Providence, and Miracle
Dr. William Lane Craig
In treating divine action in the world, we must distinguish between creation, providence, and miracle. Creation has typically been taken to involve God's originating the world (creatio originans) and His sustaining the worl... |
e1d7598fa1302698 | Psychology Wiki
Measurement problem
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The measurement problem is the key set of questions that every interpretation of quantum mechanics must answer. The problem is that the wavefunction in quantum mechanics evolves according to t... |
910a6490e142c012 | Quantum Physics
Pursuit of a Quantum Spin Liquid
Authors: George Rajna
"In a quantum spin liquid, spins continually fluctuate due to quantum effects and never enter a static ordered arrangement, in contrast to conventional magnets," Kelley said. "These states can host exotic quasiparticles that can be detected by i... |
f461c61fc6b4cc4e | Tags: wavefunction
A wave function is a mathematical tool used in quantum mechanics. It is a function typically of space or momentum or spin and possibly of time that returns the probability amplitude of a position or momentum for a subatomic particle. Mathematically, it is a function from a space that maps the possi... |
0d956961d05b4953 | Dismiss Notice
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Particle in a box?
1. Mar 5, 2006 #1
If we have the case of an infinite potential well, the particle is assumed to have 0 potential energy when inside the well at all times. Why is that? Does it assume that the box itself is 0 net charge? This is because any non zero ne... |
6c2ed96ade9368d3 | Category Archives: Flash Forward (TV Series)
FlashForward Cancelled – The Ultimate Blackout
Associated Content
Published May 14, 2010 by:
Robert Dougherty
Flashforward cancelled rumors were quite persistent all spring. The Flashforward cancelled outcome looked likely, given the free falling ratings ever since its pr... |
a32ff230dd9b78d6 | Skip to content
Open Access
Dimensional Effects on Densities of States and Interactions in Nanostructures
Nanoscale Research Letters20105:1546
Received: 15 April 2010
Accepted: 7 June 2010
Published: 2 July 2010
We consider electrons in the presence of interfaces with different effective electron mass, and ele... |
2259006caefd7da3 | Warning: mysql_real_escape_string(): No such file or directory in /home/lukeodom/otherbrothersteve.com/wp-content/plugins/statpress-reloaded/statpress.php on line 1786
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f1be1509a104c621 | Superconductivity and flux quantization
This post continues my mini-series on Feynman’s Seminar on Superconductivity. Superconductivity is a state which produces many wondrous phenomena, but… Well… The flux quantization phenomenon may not be part of your regular YouTube feed but, as far as I am concerned, it may well ... |
a47829b73293d0be | Prof. Bengt Kasemo Mar 13, ’18 23 min
Surface Science - from static to dynamic surface systems
In this Surface Science educational series in eight parts, you will be introduced to how it all began and guided through key events and important aspects in the evolution from the early days to the mature area.
The series... |
bff768f8253c4d09 | How are anyons possible? (another version) | PhysicsOverflow
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7e4f7372300a3938 | Workshop on
Multiscale Problems in Quantum and Classical Mechanics, Averaging Techniques and Young Measures
List of Abstracts
U. Bandelow (Berlin):
Quantum-Classical Coupling in Multi Quantum Well Lasers
The presence of quantum wells in laser diodes introduces a new length scale, being in the order of the Fermi-wave... |
c0f0bceab5d4b906 | Open main menu
A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. "Re" is the real axis, "Im" is the imaginary axis, and i satisfies i2 = −1.
A complex number is a number that can be expressed in the form a + ... |
0b0e5af8b7eebe58 | According to the Bohr model, when an electron moves from a ground state to the excited state, it will absorb energy, but what about the distance between electrons and nucleus, will it be changed? Why ? How?
Also, if there is the distance change when from a ground state to the excited state, will there be also any chan... |
9abbaf39afb9d8ad | Nielsen and Chuang mention in Quantum Computation and Information that there are two kinds of measurement : general and projective ( and also POVM but that's not what I'm worried about ).
General Measurements
Quantum measurements are described by a collection $\left \{ M_{m} \right \}$ of measurement operators. These... |
55e573fc9706a717 | Say I have a molecular wavefunction as a set of molecular orbitals and want to calculate the molecule's dipole moment, but don't know how! I searched a lot but couldn't find any practical example.
$$\psi _i=\sum ^N_{i=1}C_i\mathrm e^{-\alpha _ir^2}$$
• 1
$\begingroup$ You could use the variational theorem to de... |
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