# wave function

### I No interference if orthogonally polarized

Hi. A beam of previously unpolarized or diagonally polarized doesn't create an interference pattern behind a double slit if there is a vertically...
Thread by: greypilgrim, Dec 1, 2018, 1 replies, in forum: Quantum Physics

### Help with finding the expectation value of x^2

The question is as follows: A particle of mass m has the wave function psi(x, t) = A * e^( -a ( ( m*x^2 / hbar) +i*t ) ) where A and a are...
Thread by: Lasse Jepsen, Nov 27, 2018, 7 replies, in forum: Advanced Physics Homework

### B What happens to the wave function if...

The question is; In an experimental small universe, a photon is released from a source. It continues its path as a probabilistic wave function....
Thread by: ExecNight, Oct 23, 2018, 5 replies, in forum: Quantum Physics

### Normalization of the Fourier transform

1. The problem statement, all variables and given/known data The fourier transfrom of the wave function is given by \Phi(p) =...
Thread by: doggydan42, Oct 4, 2018, 6 replies, in forum: Advanced Physics Homework

### B Treating a galaxy as a quantum system

If a wave function could be assigned to a whole galaxy, would its mass spread along the wave? Could this account for the anomalies in our...
Thread by: chesleyadams, Sep 22, 2018, 3 replies, in forum: Quantum Physics

### I Is consciousness necessary to collapse the wave function?

I would like to get your ideas on what Australian professor at ANU David Chalmers' proposes that consciousness arises out of certain...
Thread by: deathonimpact, Jun 7, 2018, 15 replies, in forum: Quantum Physics

### I Difference between Schrodinger's equation and wave function?

Is there a difference between Schrodinger's equation and the wave function? In the beginning of the second edition by David J. Griffiths he...
Thread by: Kiley, May 26, 2018, 2 replies, in forum: Quantum Physics

### I Sinusoids as Phasors, Complex Exp, I&Q and Polar form

Hi, I am going around in circles, excuse the pun, with phasors, complex exponentials, I&Q and polar form... 1. A cos (ωt+Φ) = Acos(Φ)...
Thread by: Natalie Johnson, May 10, 2018, 4 replies, in forum: General Physics

### I What does this equation for a free particle mean?

So there's a free particle with mass m. \psi(x,0) = e^{ip_ox/\hbar}\cdot\begin{cases} x^2 & 0 \leq x < 1,\\ -x^2 + 4x -2 & 1...
Thread by: Rob Turrentine, Apr 29, 2018, 20 replies, in forum: Quantum Physics

Greg Bernhardt submitted a new PF Insights post Interview with Astrophysicist: Adam Becker [ATTACH] Continue reading the Original PF Insights Post.
Thread by: Greg Bernhardt, Mar 24, 2018, 132 replies, in forum: Quantum Physics

### Normalization constant for a 3-D wave function

1. The problem statement, all variables and given/known data Show that the normalized wave function for a particle in a three-dimensional box with...
Thread by: Valeria, Dec 29, 2017, 2 replies, in forum: Introductory Physics Homework

### I The Relation Between Wavefunctions in Dirac Equation

Can the wave function in four dimensions be expressed as e^i(kx+ky+kz-wt)?
Thread by: Bob Dylan, Nov 27, 2017, 11 replies, in forum: Quantum Physics

### Show that the Hydrogen wave functions are normalized

1. The problem statement, all variables and given/known data Show that the (1,0,0) and (2,0,0) wave functions are properly normalized. We know...
Thread by: kneesarethebees, Oct 22, 2017, 8 replies, in forum: Advanced Physics Homework

### Does the moon orbit as a classical particle?

The moon orbits Earth at a radius of 3.84E8 m. To do so as a classical particle, its wavelength should be small. But small relative to what? Being...
Thread by: Big_Tubbz, Oct 11, 2017, 1 replies, in forum: Introductory Physics Homework

### A Can the wave function show turbulence?

I remember from my physics classes that the wave functions for the hydrogen atoms or an electron in a box showed typical linear wave behaviour....
Thread by: sgphysics, Aug 28, 2017, 1 replies, in forum: Quantum Physics

### I Expanding universe and quantum wavefunctions

In a dark energy dominated universe, it seems that all the particles get away from each other and that the final state will be one with one or...
Thread by: durant35, Aug 26, 2017, 11 replies, in forum: Cosmology

### B Why does a the Wave Function collapse?

Why does a wave function collapse when we observe a particle? I would like to know why something that is in Super Position suddenly chooses a...
Thread by: mpolo, Aug 17, 2017, 8 replies, in forum: Quantum Physics

### I Does the wave function shorten when approaching light speed?

Relative to the observer, objects shorten when approaching the speed of light exponentially. Does this rule also apply to the wave function? Does...
Thread by: KBon, Aug 8, 2017, 2 replies, in forum: Quantum Physics

### B Physical significance of wave function

I am a beginner in quantum mechanics. I started out with D. J. Griffiths' book in quantum mechanics. I'm having a problem in understanding the...
Thread by: Wrichik Basu, Jul 8, 2017, 4 replies, in forum: Quantum Physics

### B What is the wave function for a single electron?

If you know where to look for an electron (e.g. in an atom or an experimental setup) it is quite understandable that, until you know exactly where...
Thread by: Quandry, Jul 4, 2017, 11 replies, in forum: Quantum Physics

### I Concerning the Nature of Quantum Measurement...

I'm well aware of the common adage and quantum fact that, until a particle is measured by some sort of instrument, it exists in a state of...
Thread by: PotentialReasoning, Jul 3, 2017, 4 replies, in forum: Quantum Physics

### The plots of wave function of harmonic oscillator

1. The problem statement, all variables and given/known data In Griffiths' book "Introduction to Quantum Mechanics", Section 2.3, Chapter 2, the...
Thread by: Tspirit, Jun 21, 2017, 2 replies, in forum: Advanced Physics Homework

### Time-independent Schrödinger equation, normalizing

1. The problem statement, all variables and given/known data An electron coming from the left encounters/is trapped the following potential:...
Thread by: WrongMan, Jun 20, 2017, 1 replies, in forum: Advanced Physics Homework

### I Kinetic and Potential energy operators commutation

Hi All, Perhaps I am missing something. Schrodinger equation is HPsi=EPsi, where H is hamiltonian = sum of kinetic energy operator and potential...
Thread by: Dinara, Jun 16, 2017, 14 replies, in forum: Quantum Physics

### I Why not describing the radiatation of atom spectrum by TDSE

The radiation of an atom was interpreted by time-independent schrodinger equation:electron was transformed from high energy level state to lower...
Thread by: zhouhao, May 30, 2017, 7 replies, in forum: Quantum Physics