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6fbed9ad738993ff | Date of Award
Degree Type
Degree Name
Honors Thesis
Though classical random walks have been studied for many years, research concerning their quantum analogues, quantum random walks, has only come about recently. Numerous simulations of both types of walks have been run and analyzed, and are generally well-und... |
0138fae2a1ece138 |
Chapter 9: Scattering in One Dimension
We now consider another one-dimensional problem, the scattering problem. In doing so we need to consider scattering-type solutions and what they mean. For standard scattering situations, the wave functions we use are usually those valid for regions of constant potential energy ... |
e891551a197987eb | The Hartree-Fock method
The Hartree-Fock method
Last time we ended up with a simplified Hamiltonian:
\hat{H} = \sum\limits_{i=1}^{N} \hat{p}_i^2/2 + \frac{1}{2} \sum\limits_{i,j=1;i\neq j}^{N}\frac{1}{|\vec{r}_i-\vec{r}_j|} - \sum\limits_{i=1}^{N}\sum\limits_{j=1}^{M}\frac{Z_j}{|\vec{r}_i-\vec{R}_j|}
and having th... |
0e4d3b313805395a | (Click here for bottom)
Acceptance Test.
Advanced Technology. Yesterday's AT is tomorrow's joke. You might gaze upon my works and despair. IBM's PC/AT is vintage 1984.
A.T., AT
German, Altes Testament. English, `Old Testament' (O.T.).
Anthropology Today. A journal published by Blackwell on behalf of the Royal Anthr... |
0f93dc82e3eeeb14 | NT&AG: Eyal Subag (Penn State University), "Symmetries of the hydrogen atom and algebraic families"
The hydrogen atom system is one of the most thoroughly studied examples of a quantum mechanical system. It can be fully solved, and the main reason why is its (hidden) symmetry. In this talk I shall explain how the symm... |
dad53d267955c555 | 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... |
7c56b07510623171 | Principia Cybernetica Web
The Physics of Evolution
From the viewpoint of a physicist, evolution can be seen as a search for stability. Consider a system of atoms in the framework of non-relativistic quantum mechanics and statistics. Its configuration is a set of values of all generalized coordinates of the system, e.... |
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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 ... |
71bed6fe04639768 | Take the 2-minute tour ×
This question already has an answer here:
What math should I study if I want to get a basic understanding of quantum mechanics and especially to be able to use the Schrodinger's equation.
share|improve this question
Possible duplicate: physics.stackexchange.com/q/5014/2451 – Qmechanic Sep 3... |
8b595fa84b062b61 | Quantum Physics
1203 Submissions
[11] viXra:1203.0104 [pdf] submitted on 2012-03-29 13:10:53
Wave Function for Classical Mechanics
Authors: Janne Mikael Karimäki
Comments: 9 Pages. Other people have had this idea before me. This may still be interesting for some people interested in the foundations of physics.
In ... |
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Comment: Re:Impossible (Score 1) 600
by andrepd (#46826203) Attached to: The US Public's Erratic Acceptance of Science
>We still have no idea what caused the Universe to exist
Stop please. If you had even an inklin... |
e1ec818a6afdb20e | Take the 2-minute tour ×
Apologies if this is stating the obvious, but I'm a non-physicist trying to understand Griffiths' discussion of the hydrogen atom in chapter 4 of Introduction to Quantum Mechanics. The wave equation for the ground state (I believe) is:$$\psi=\frac{1}{\sqrt{\pi a^{3}}}e^{-r/a}$$
where $a$ is t... |
ac3efbd7f91dd2fb | Monday, May 29, 2006
Non-Relativistic QCD
This is another installment in our series about fermions on the lattice. In the previous posts in this series we had looked at various lattice discretisations of the continuum Dirac action, and how they dealt with the problem of doublers posed by the Nielsen-Ninomiya theorem.... |
54e905aa38201142 | Determining the Radial Part of a Wave Function
By Steven Holzner
In quantum physics, you can determine the radial part of a wave function when you work on problems that have a central potential. With central potential problems, you’re able to separate the wave function into a radial part (which depends on the form of... |
a06aee3521c1fedd | Incite 1: Visualization of Electron Walkers Computed by Quantum Monte Carlo Simulation of Energy Pathways in Photosynthesis Reactions
Table of Contents
In this article, we show how the NERSC Visualization Group has worked closely with the Quantum Monte Carlo Study of Photoprotection via Carotenoids in Photosynthetic... |
2479dc98e51b6dd8 | Sunday, September 24, 2017
Theory and Experiment in Gravitational Physics by Clifford M. Will
Theory and Experiment in Gravitational Physics is an excellent, if old, tract on the confrontation of general relativity and experiment (I read the revised edition of 1993). The author, C. M. Will, however, gives regular up... |
d777a14471d6d054 | Date of Award
Document Type
Open Access Dissertation
Chemistry and Biochemistry
College of Arts and Sciences
First Advisor
Sophya Garashchuk
Chemical dynamics, in principle, should be understood by solving the time-dependent Schrödinger equation for a molecular system, describing motion of the nuclei and ele... |
9c20e9decb43f840 | Monday, May 28, 2018
What do physicists mean when they say the laws of nature are beautiful?
Simplicity in photographic art.
“Monday Blues Chat”
By Erin Photography
In my upcoming book “Lost in Math: How Beauty Leads Physics Astray,” I explain what makes a theory beautiful in the eyes of a physicist and how beauty ma... |
739a5157936514f0 | What's new in
p-Adic Length Scale Hypothesis and Dark Matter Hierarchy
Note: Newest contributions are at the top!
Year 2007
1. Are heavier nuclei produced in the interstellar space?
[2] J. Prochaska, J. C. Howk, A. M. Wolfe (2003), The elemental abundance pattern in a galaxy at z = 2.626, Natur... |
536b3fca4c05b6c6 | Facebook Twitter Instagram YouTube
Experimental Investigations of Quantum Mechanics
Observing the Heisenberg Uncertainty Principle in the Laboratory
The Cindy Regal group is so skillful at using laser light to track the position of a tiny drum that researchers have been able to observe a limit imposed by the Heisenb... |
2a7093cb1e0220fc | Wednesday, November 30, 2016
Do you already believe in emergent gravity?
Popular writer Sabine Hossenfelder gave a highly authoritative explanation for what emergent gravity is (see this). Actually, she started by bravely expanding the notion of emergence: not only gravitation but also free will, cell, and brain emer... |
c3c3e63dede6f2f2 | Foundations of Physics
, Volume 44, Issue 5, pp 557–575
On the Gravitization of Quantum Mechanics 1: Quantum State Reduction
Open AccessArticle
DOI: 10.1007/s10701-013-9770-0
Cite this article as:
Penrose, R. Found Phys (2014) 44: 557. doi:10.1007/s10701-013-9770-0
This paper argues that the case for “gravitizi... |
29471fc9d17672eb |
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This is something which I suspect is written up in introductory books on mathematical physics if I knew where to look. Suppose I have some parameters $t_1$, ..., $t_k$ ranging over a neighborhood in $\mathbb{R}^k$. I also have $k$ m... |
bae0adef67e72808 | Tae-Chang Jo
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High-volume, multistage continuous production flow through a re-entrant factory is modeled through a conservation law for a continuous-density variable on a continuous-production line augmented by a state equation for the speed of the production along the production line. The resulting nonlinea... |
0c468a2ef6c85382 | Wednesday, August 29, 2012
Quantum Gravity and Taxes
The other day I got caught in a conversation about the Royal Institute of Technology and how it deals with value added taxes. After the third round of explanation, I still hadn’t quite understood the Swedish tax regulations. This prompted my conversation partner to... |
ee9de7346383a88c | Cover Story
Unlike linear waves, solitons create their own channel as they travel in a uniform medium, remaining localized and preserving their shape. Whereas linear waves always pass through one another, solitons can be dramatically altered by... more>>
Massive Soliton WDM Transmission at N × 10 Gbit/sec, Error-fre... |
d1d6537f6be83259 | I want to calculate the following expression $$ \exp(-i\Delta t\mathbf{H}) $$ where $\mathbf{H}\in\mathbb{C}^{n\times n}$ is a hermitian matrix. Since I have a highly optimized eigensolver in the code I'm working with (ScaLAPACK & Fortran 90) I was thinking about utilizing it by calculating the matrix exponential with ... |
b516b736f791376b | Thursday, January 05, 2017 ... Deutsch/Español/Related posts from blogosphere
Weinberg's trouble with quantum mechanics is not even wrong
Bill Zajc and Luke Lea have simultaneously sent me a link to a new (or future) article by Steven Weinberg in The New York Review of Books,
The Trouble with Quantum Mechanics
Weinb... |
bc9dc6c0ac6a3143 | The Exact Schrödinger Equation
The computer-aided calculation of the physical properties of solids is based on the solution of the Schrödinger equation for many electrons ("many-particle problem"):
H Ψ = E Ψ
Unfortunately, even on the best supercomputers it is no longer directly solvable for sy... |
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b40009cea5865b35 | Core electrons in the electronic stopping of heavy ions
Core electrons in the electronic stopping of heavy ions
Rafi Ullah CIC nanoGUNE, Ave. Tolosa 76, 20018 Donostia-San Sebastián, Spain Departamento de Física de Materiales, UPV/EHU, Paseo Manuel de Lardizabal 3, 20018 Donostia-San Sebastián, Spain Emilio Artach... |
9502e26ad83c76d8 | Some Definitions
Both physics and philosophy are jargon-ridden. So let’s first define some key concepts.
Both “consciousness” and “physical” are contested terms. Accurately if inelegantly, consciousness may be described following Nagel (“What is it like to be a bat?”) as the subjective what-it’s-like-ness of experie... |
9133a8109001658d | Beyond Quantum: 1st Edition (Hardback) book cover
Beyond Quantum
1st Edition
Edited by Andrei Khrennikov
Jenny Stanford Publishing
392 pages | 14 B/W Illus.
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pub: 2014-04-10
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Orbital hybridisation
From Wikipedia, the free encyclopedia
(Redirected from Orbital hybridization)
Jump to navigation Jump to search
In chemistry, orbital hybridisation (or hybridization) is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies... |
992ba1e779d43522 | Block-adaptive quantum mechanics: An adaptive divide-and-conquer approach to interactive quantum chemistry
of 25
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Block-Adaptive Quantum Mechanics: an adaptive divide-and-conquerapproach to interactive quantum chemistry Mäel Bosson, Sergei Grudinin, Stephane RedonNANO-D - INRIA Grenoble - Rhone-Alpe... |
26f5fa10ec59a047 | Numerical Verification of Transition’s Energies of Excitons in Quantum Well of ZnO with the Finite Difference Method
Journal of Modern Physics
Vol.07 No.03(2016), Article ID:63882,6 pages
Bassirou Lô, Serigne Bira Gueye
Department of Physics, Sciences and Technics Faculty, University Cheikh Anta Diop UCAD, Dakar,... |
3cac13af9c2435ba | Analysis and PDEs, "Quantum state transfer on graphs", G. Lippner (neu)
Title: Quantum state transfer on graphs. Abstract: Transmitting quantum information losslessly through a network of particles is an important problem in quantum computing. Mathematically this amounts to studying solutions of the discrete Schröding... |
1b99754374e6fd71 | The shape of flowing water
Time: Thu 2019-09-05 15.15 - 16.30
Lecturer: Tomas Bohr (Technical University of Denmark)
Location: Oskar Klein auditorium FR4, AlbaNova
Abstract. When we observe fluid flows in nature, it is often because we notice the deformation of the fluid surface e.g., when light reflects on a water... |
0991ec31aadbafd4 | Archive for August, 2008
Non-dissipative diffusion in classical and quantum systems
Zahid Zakir [1]
The theory of non-dissipative diffusion is constructed on an example of diffusion of a light particle in a dilute medium of heavy particles and it is shown that in low dissipative systems there are specific ef... |
11f881f16aa91370 | Skip to main content
Doping dependence of low-energy quasiparticle excitations in superconducting Bi2212
Article metrics
Electronic excitations dressed by the interaction with the medium are called quasiparticles. They serve as a direct probe of the anisotropic order parameter of a superconducting phase and also... |
8b5ec1c65d454385 | Capitalism relies on the assumption that humans are not naturally curious.
Because if “they had too much money they wouldn’t do anything but loiter and not work,” and never be curious about something ever.
Capitalism is then viewed as a reward to those that go against their own nature and become this mythical curious... |
90632267a821c8a1 | Teoria y Estructura Atómica
Atomic Theory IV: Quantum Numbers and Orbitals
por Adrian Dingle, B.Sc., Anthony Carpi, Ph.D.
In Atomic Theory III: Wave-Particle Duality and the Electron, we discussed the advances that were made by Schrödinger, Born, Pauli, and others in the application of the quantum model to atomic th... |
6269dfc4a00a816f | onsdag 3 december 2014
The Radiating Atom 5: Summary
A summary of the experience gathered in the recent posts on radiating atoms is as follows:
1. Schrödinger's equation in standard multi-dimensional form is uncomputable and unphysical.
Schrödinger's wave equation in multi-dimensional linear form commonly viewed a... |
4124e07b08b7db6a | Open main menu
Quantum number
(Redirected from Quantum numbers)
Quantum numbers describe values of conserved quantities in the dynamics of a quantum system. In the case of electrons, the quantum numbers can be defined as "the sets of numerical values which give acceptable solutions to the Schrödinger wave equation... |
c5aa5012191ae121 | Tuesday, May 05, 2015
Updated Negentropy Maximization Principle
Quantum TGD involves "holy trinity" of time developments. There is the geometric time development dictated by the preferred extremal of Kähler action crucial for the realization of General Coordinate Invariance and analogous to Bohr orbit. There is what ... |
c6752f4de6efdd35 | Quantum Barrier Scattering
Canvas not supported! Please update your browser.
Run Speed: Real/imag Density/phase Grid
Reset Wavepacket energy = 0.030 ± 0.005
Barrier energy = 0.030 Width = 20 Ramp = 0
This simulation shows a quantum mechanical wavepacket hitting a barrier. You can adjust the wavepacket’s n... |
f0ad257a8b1798b6 | Trapped Inside | On Beyond Darwin - Chapter 12
Trapped Inside
In this century, two very startling and revolutionary changes took place in our thinking about the universe. One of these changes is the idea that at the microscopic level there is inherent unpredictability in the behavior of particles. This unpredictabil... |
9378153abf178c85 | ANTIMATTER: who ordered that?
The existence of antimatter became known following Dirac’s formulation of relativistic quantum mechanics, but this incredible development was not anticipated. These days conjuring up a new particle or field (or perhaps even new dimensions) to explain unknown observations is pretty much st... |
7e48d2495327f05c | Laws of science
From Wikipedia, the free encyclopedia
The laws of science, scientific laws, or scientific principles are statements that describe or predict a range of phenomena as they appear in nature.[1] The term "law" has diverse usage in many cases: approximate, accurate, broad or narrow theories, in all natural... |
2563a8fb2ddb98bc | (redirected from Fysics)
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fb1dd6b2f8217621 | Tag Archives: relativity
faster than light travel
The article NASA May Have Accidentally Created a Warp Field is getting people excited about faster than light travel.
You don’t need to travel faster than light to go arbitrarily far in arbitrarily less time. All you need to do is travel closer to the speed of light.... |
ea8e72130bdd14a6 | Orchestrated Objective Reduction ("ORCH OR")
Orchestrated Objective Reduction ("ORCH OR")
Postby d023n » Sun Mar 25, 2018 11:32 pm
Here are a couple of excerpts from the following paper by Sir Roger Penrose and Stuart Hameroff regarding this theory. The first explains the motivations behind the OR part, and the sec... |
f47d77543cdbadcc |
Difference between revisions of "Complex number"
From Citizendium, the Citizens' Compendium
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m (Historical example: Changed x to y in the quadratic equation encountered; using x for two different quantities at the same time seemed potentially confusing)
Line 25: Line 25:
It follows from th... |
aedcb8d305ff0233 | Resume Reading — The Noise at the Bottom of the Universe
The Noise at the Bottom of the Universe
The origin of quantum noise is the modern incarnation of a millennia-old debate.
To a physicist, perfect quiet is the ultimate noise. Silence your cellphone, still your thoughts, and muffle every kind of vibration,…By G... |
b247adfe1fe0ad16 | Skip to main content
Anomalous diffraction of matter waves with minimal quantum metasurfaces
In the last few years, there is a huge upsurge in the number of closed deals regarding quantum technologies for materials, computing, communication and instrumentation. Such a trend has inevitably affected the research fundi... |
a40735c5be7e6b0e | We know Bohr said that the angular momentum of an electron is an integral multiple of $nh/(2π).$ And in de Broglie's wave equation, he said the circumference of the path of the electron traveling as a way is $n$ times the wavelength, which is equal to $2πr.$
But in Bohr's model $n$ is the principal quantum number, whi... |
977e7d47730e5ba0 | Take a classical field theory described by a local Lagrangian depending on a set of fields and their derivatives. Suppose that the action possesses some global symmetry. What conditions have to be satisfied so that this symmetry can be gauged? To give an example, the free Schrödinger field theory is given by the Lagran... |
41dcaea9d54c0f56 | Scientific focus
The scientific programme will be flexible to fully accommodate the explorative scientific scope of NQO, but it will also address three major application areas that already exhibit clear evidence that the combination of quantum optics with nanophotonics is technologically valuable:
1. information & ... |
e95e6f5824e4ea67 | Religion and Science
First published Tue Feb 20, 2007; substantive revision Thu May 27, 2010
Modern western empirical science has surely been the most impressive intellectual development since the 16th century. Religion, of course, has been around for much longer, and is presently flourishing, perhaps as never before... |
8619ec275fd8edf5 | Schrödinger’s Cat and the Secret of Life
Irwin Schrödinger described his Cat Paradox in 1935. You’ve heard the gist described in many ways. In quantum mechanics, if something is possible and something else is possible, it is always possible for the something and something else to exist in superposition. An object can ... |
d93697cbd36ed971 | IA Scholar Query: A Monotonic Projective Algorithm for Fractional Linear Programming. https://scholar.archive.org/ Internet Archive Scholar query results feed en info@archive.org Wed, 31 Aug 2022 00:00:00 GMT fatcat-scholar https://scholar.archive.org/help 1440 Information Leakage Games: Exploring Information as a Util... |
02292a4a41bb5076 | LOG#114. Bohr’s legacy (II).
Dedicated to Niels Bohr
and his atomic model
2nd part: Electron shells,
Quantum Mechanics
and The Periodic Table
Niels Bohr (1923) was the first to propose that the periodicity in the properties of the chemical elements might be explained by the electronic structure of the atom. In ... |
a1c4808c32a85ca5 | All Issues
Volume 42, 2022
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Volume 30, 2011
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Volume 28, 2010
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a98a279af34f91df | Bloch's theorem
Isosurface of the square modulus of a Bloch state in a silicon lattice
Solid line: A schematic of the real part of a typical Bloch state in one dimension. The dotted line is from the eik·r factor. The light circles represent atoms.
Bloch function
where is position, is the wave function, is a periodi... |
5fbc0301da1b8161 | @article{1292, abstract = {We give explicit formulas and algorithms for the computation of the Thurston–Bennequin invariant of a nullhomologous Legendrian knot on a page of a contact open book and on Heegaard surfaces in convex position. Furthermore, we extend the results to rationally nullhomologous knots in arbitrary... |
41dcaea9d54c0f56 | Scientific focus
The scientific programme will be flexible to fully accommodate the explorative scientific scope of NQO, but it will also address three major application areas that already exhibit clear evidence that the combination of quantum optics with nanophotonics is technologically valuable:
1. information & ... |
12fdf6ac55f7040a | I am slightly confused about hybridisation and how it relates to molecular and atomic orbitals, despite having pored through many sources online. I was hoping someone could verify whether my current understanding is correct, in particular regarding what hybridisation actually is/does because I have not read this explic... |
3f33998a32f30970 | Binding Quiddities
[Epistemic Status: Wild Speculations]
Televised Entity Contact
This slideshow requires JavaScript.
by Steven Haman (source)
Testing the Mind-Independent Existence of DMT Entities
Injection Pulling Experiments
The Brain as a Game Engine
[1] Serious and... |
49103ba13600bf91 | « first day (3224 days earlier) last day (219 days later) »
3:16 AM
@ACuriousMind there's lots of us in germany
probably unrelated
1 hour later…
4:39 AM
@RyanUnger I cycle past a business called Ungerer every day in Chester. I've often wondered if the two surnames stem from a common root.
3 hours later…
7:21 AM
... |
6a818dee7dec5ce0 | Classical Fluids via Quantum Mechanics
The subject of this post is probably a bit too technical to interest many readers, but I’ve been meaning to post something about it for a while and seem to have an hour or so to spare this morning so here goes. This is going to be a battle with the clunky WordPress latex widget t... |
8ccb4f5d265c30e2 | Maximizing Performance under a Power Constraint on Modern Multicore Systems
Journal of Computer and Communications
Vol.07 No.07(2019), Article ID:93951,15 pages
Maximizing Performance under a Power Constraint on Modern Multicore Systems
Vaibhav Sundriyal1, Masha Sosonkina1, Bryce Westheimer2, Mark S. Gordon2
1Old... |
c5f15ca3f2ecabfc | Cellular Automaton: Life Animation in “Red Queen: The Substrate Wars 1”
Red Queen: The Substrate Wars 1
Red Queen: The Substrate Wars 1
When I was 12 or so, I read about John Horton Conway’s cellular automaton Life in Scientific American. Back then (c. 1970) we had to painfully draw each generation on graph paper. ... |
b40ccf72928c2492 | Uzi Landman
School of Physics
Georgia Institute of Technology
Atlanta, GA 30332-0430
Scientific Drivers
The everlasting desire to probe and understand natural phenomena with increasing spatial and temporal resolution, coupled with the trend toward device miniaturization and the technological and economical potentials... |
2c1560cff59f6b4e | Open main menu
Wikipedia β
Laplace–Runge–Lenz vector
In classical mechanics, the Laplace–Runge–Lenz vector (or simply the LRL vector) is a vector used chiefly to describe the shape and orientation of the orbit of one astronomical body around another, such as a planet revolving around a star. For two bodies interacti... |
5b28f7c9d3577c71 | Download Advanced Physics of Electron Transport in Semiconductors and by Massimo V. Fischetti, William G. Vandenberghe PDF
By Massimo V. Fischetti, William G. Vandenberghe
This textbook is aimed toward second-year graduate scholars in Physics, electric Engineering, or fabrics technology. It offers a rigorous creatio... |
20e4b0826d3352d1 | Checked content
Quantum chemistry
Related subjects: Chemistry
Background Information
Solutions of the Schrödinger equation for the hydrogen atom gives the form of the wave function for atomic orbitals, and the relative energy of the various orbitals. The orbital approximation can be used to understand the other... |
c8ba03bbe41f6d04 |
2Physics Quote:
-- Kathrin Altwegg and the ROSINA Team
Sunday, January 24, 2010
Simulating the Physics of a Free Dirac Particle
Christian Roos
[This is an invited article based on a recently published work by the author and his collaborators from Austria and Spain -- 2Physics.com]
Author: Christian Roos
Instit... |
daf5c8c1c2dd7598 | The Effect of an Increase in Mass on the Motion of Particles According to Schrödinger's Time-Independent Equation
San José State University
Thayer Watkins
Silicon Valley
& Tornado Alley
The Effect of an Increase in Mass
on the Motion of Particles According to
Schrödinger's Time-Independent Equation
A Basic Quantum... |
2031a4b4e9b7f89a | Wednesday, November 30, 2011
Duality between hadronic and partonic descriptions of hadron physics
I found the talk of Matthew Schwartz titled The Emergence of Jets at the Large Hadron Collider belonging to the Monday Colloqium Series at Harward. The talk told about the history of the notion of jet and how it is appli... |
304ea51930d4bc37 | Enter the content which will be displayed in sticky bar
Quantum Mechanics Differential Equations Based on the Focal-Radius Of A Particle Instead of the De Broglie Wavelength
Osvaldo Domann
Year: 2013 Pages: 7
Quantum mechanics differential equations are based on the de Broglie wavelength assigned to a particle. The... |
dc3cba2e72144fae | We Still Don’t Understand Why Time Only …
We Still Don’t Understand Why Time Only Flows Forward
“It’s true that entropy does explain the arrow of time for a number of phenomena, including why coffee and milk mix but don’t unmix, why ice melts into a warm drink but never spontaneously arises along with a warm be... |
519328a00f421876 | 22 Going relativistic
Formally, the Schrödinger equation can be obtained via the following steps:
• Start with the approximate, non-relativistic relation (2.3.2) between the kinetic energy and the kinetic momentum associated with a particle of mass m.
• Write this in terms of the total energy E, the total momentu... |
5c22874e0a6c2de3 | Educational Research
At present, there are two methods to method chemistry problems: computational quantum chemistry and non-computational quantum chemistry Computational quantum chemistry is mostly concerned with the numerical computation of molecular electronic structures by ab initio and semi-empirical tactics and... |
b69806bb7a72bb14 | You are here
Applied Mathematics for Chemistry Majors
Rachel Neville1, Amber T. Krummel2, Nancy E. Levinger2, Patrick D. Shipman3
1 University of Arizona, Department of Mathematics, Tucson, Arizona, United States
2 Colorado State University, Department of Chemistry, Fort Collins, Colorado, United States
3 Colorado ... |
7dc7b43bf8e4dbcd | Artificial intelligence speeds up!
A new electronic circuit to solve complex problems.
Artificial intelligence
Now it is possible to solve a system of linear equations in a single operation in the timescale, thanks to a newly designed electronic circuit develops by a group at Politecnico di Milano. The circuit can p... |
b2160d98515f2ca3 | Many benefits of Pulsed Electro-Magnetic Field (“PEMF”) therapy have been demonstrated through more than 2,000 University level, double-blind, medical studies done in many countries with many different PEMF therapy devices. Some of the positive effects of PEMF therapy were well established by the mid 1900’s. The first ... |
47a7ce8c8038610f | Open main menu
Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.[2]
Classical physic... |
8aa7a127c8528571 | Quantum physics is cargo cult science
Ethan Siegel wrote a blog post this week called This Is Why Quantum Field Theory Is More Fundamental Than Quantum Mechanics. I read it and sighed, because so much of it is misleading. This sort of thing has been in the air recently, because Lee Smolin gave a lecture on Einstein’s ... |
fca8034a8d8e059b | Wednesday, January 06, 2010
Is Physics Cognitively Biased?
Recently we discussed the question “What is natural?” Today, I want to expand on the key point I was making. What humans find interesting, natural, elegant, or beautiful originates in brains that developed through evolution and were shaped by sensory input re... |
2eefe094f06876e9 | There was excitement at the European Physics Society conference in Grenoble, France last week as physicists gathered to review evidence for the detection of the Higgs particle. With the latest data, the LHC is finally returning on its investment while the Tevatron at Fermilab is bravely battling on before its imminent ... |
cecea49a837c83b9 | World Library
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Vector space
Vector space
Vector addition and scalar multiplication: a vector v (blue) is added to another vector w (red, upper illustration). Below, w is stretched by a factor of 2, yielding the sum v + 2w.
A vector space is a mathematical structure formed ... |
043d94d1c2a4b030 | Why the Higgs Cannot Exist
Comment: look here for an analysis of the new particle which was found in LHC.
The Higgs Boson belongs to a family of particles which, by definition, are massive, elementary and spinless. So far it has been assumed that such particles really exist, and scientists even won Nobel prizes for a... |
f911c7bf6647ce26 | @Article{AAMM-10-879, author = {Rena Eskar and Xinlong Feng and Pengzhan Huang}, title = {Fourth-Order Compact Split-Step Finite Difference Method for Solving the Two and Three-Dimensional Nonlinear Schrödinger Equations}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2018}, volume = {10}, number =... |
e0470b33bccdd85b | RTO care
You are here: Computation Concepts > Methods Overview > Using Computational Methods
Methods Overview
Computational chemistry encompasses a variety of mathematical methods that fall into two broad categories:
Molecular mechanics
applies the laws of classical physics to the atoms in a molecule without expli... |
f59df4fbc8cf6fda | Stochastic Schrödinger equation
The stochastic Schrödinger equation has the basic form
\[i\hbar\frac{\mathrm{d}}{\mathrm{d} t} |\Psi(t)\rangle = \left(H + \sum_i H_i^s \xi_i(t)\right) |\Psi(t)\rangle\]
where $H_i^s$ are the terms in the Hamiltonian that are each proportional to an independent noise term $\xi_i(t)$. ... |
4129e485a06b8212 | gauge theory
(redirected from Gauge field theories)
Also found in: Dictionary.
Related to Gauge field theories: Gauge symmetry, Gauge invariance
Gauge theory
The theoretical foundation of the four fundamental forces of nature, the electromagnetic, weak, strong, and gravitational interactions. Gauge symmetry lies at ... |
b7c4a7db492aee0e | Are Parallel Universes Unscientific Nonsense?
If you’re a multiverse skeptic, you should know that there are many potential weaknesses in the case for parallel universes, and I hope you’ll find my cataloging of these weaknesses below useful. To identify these weaknesses in the pro-multiverse arguments, we first need t... |
c1b188f65d8cfa7f | Online ISSN: 1097-461X Print ISSN: 0020-7608
International Journal of Quantum Chemistry
Volume 82, Issue 5, 2001. Pages: 255-261
Published Online: 9 Apr 2001
Copyright © 2001 John Wiley & Sons, Inc.
Properties, Dynamics, and Electronic Structure of Atoms and Molecules
Resonance states of atomic anions
Alexei V. ... |
a7fff081cfa6fafa | For a particle in a circular box (with radius $R$) with zero potential inside the circle and infinitely high potential outside of the circle, the Schrödinger equation in polar coordinates is:
$$-\frac{\hbar^2}{2m}\Big(\frac{\partial^2u}{\partial r^2}+\frac{1}{r}\frac{\partial u}{\partial r}+\frac{1}{r^2}\frac{\partial... |
c32a5c51ef19034e | Ménage primes
The Online Encyclopedia of Integer Sequences has recently celebrated its fiftieth anniversary, amassed over 250 000 sequences of varying importance, and heralded the 75th birthday of its creator Neil Sloane. It is somewhat surprising, therefore, that no-one appears to have investigated the intersection o... |
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