Quantum Physics Forum

Post thread
Join in expert discussion on quantum physics. Quantum physics is the mathematical description of the motion and interaction of subatomic particles. Quantum Mechanics and Field Theory.

Quantum Interpretations and Foundations

Graduate Understanding Barandes' microscopic theory of causality
Graduate Schrödinger equation where V = |x|
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Particles that already exist become entangled
  • · Replies 3 ·
Replies
3
Views
2K
Graduate [Q] square of 'sinc function' integral
  • · Replies 1 ·
Replies
1
Views
9K
Graduate Quantum Computing: Understanding Quantum Bits
  • · Replies 14 ·
Replies
14
Views
3K
Graduate What Are the Best Resources for Researching SIC-POVMs?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate QM Collisions: How Two Particles Interact
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Goldstein schodinger's equation Lagragian problem.
  • · Replies 5 ·
Replies
5
Views
3K
Graduate [Q]Momentum eigenstate normailization
  • · Replies 4 ·
Replies
4
Views
3K
High School I am newb please explain this about Electrons
  • · Replies 18 ·
Replies
18
Views
4K
Graduate PDC Type I: Unreasonable "Elements of Reality" in Bell Tests?
  • · Replies 36 ·
2
Replies
36
Views
6K
High School Need Help Understanding Closure Rule
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Why Wave Functions Use Complex Exponentials vs Trigonometric Functions
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Quantum Tunneling: Particle Paths & Interactions
  • · Replies 18 ·
Replies
18
Views
5K
Graduate Velocity operator inconsistency and discrete particle
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Scattering and bound states
  • · Replies 4 ·
Replies
4
Views
5K
Graduate Quantum Physics and the Pensions Crisis
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Superposition of eigenstates in QM
  • · Replies 3 ·
Replies
3
Views
8K
Graduate Commuting creation and annihilation operators
  • · Replies 2 ·
Replies
2
Views
9K
Graduate The state of a particle changes when viewed
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is Space and Time Truly Nonexistent at the Subatomic Level?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Defending Bohmian Trajectories: A Critical Analysis of ESSW and Hiley's Papers
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Dirac Delta Function Explained: Simplified for M.S Students
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Is friction a quantum phenomenon at the atomic level?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Can Quantum Computers Use Alternatives to Qubits for Entanglement?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Entanglement spooky action at a distance
  • · Replies 197 ·
7
Replies
197
Views
29K
Graduate Getting Started with Gaussian Wavepackets & Uncertainty Principle
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Quantum Mechanics: Particle-Wave Duality
  • · Replies 20 ·
Replies
20
Views
4K
Graduate Understanding Reference Frames in Quantum Mechanics
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is Time Really Symmetrical in the Quantum World?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Velocity of Electrons in Hydrogen Atom
  • · Replies 5 ·
Replies
5
Views
5K
Undergrad Understanding Magnetic Quantum Numbers: Demystifying the Concept for Students
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Understanding Pauli Matrices and Rotations
  • · Replies 7 ·
Replies
7
Views
12K
Graduate Integral of a delta function from -infinity to 0 or 0 to +infinity
  • · Replies 31 ·
2
Replies
31
Views
46K
Graduate EPR Paradox: Examining Einstein's Challenge to QM
  • · Replies 2 ·
Replies
2
Views
3K
Graduate What Is the Significance of Quark Spin in Quantum Physics?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Planck's law and ultraviolet catastrophe
  • · Replies 3 ·
Replies
3
Views
12K
Graduate Energy Eigenstates: Solving Schrodinger Equation & Time-Indep
  • · Replies 6 ·
Replies
6
Views
6K
Undergrad Can We See Photons? Understanding Their Dimensions & Speed
  • · Replies 18 ·
Replies
18
Views
14K
Graduate Proving IN DIRAC THEORY Free Particles Possess Acceleration"
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Do Signal and Idler Photons from PDC Always Share Equal Energy?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Do Transition Dipole Moments Have Different Signs? Resolving a Contradiction
  • · Replies 3 ·
Replies
3
Views
17K
Graduate Is the singlet state just a special case of mixture?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Densely defined operators of Fock space
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Gauge Boson Propagators in Spontaneously Broken Gauge Theories
  • · Replies 1 ·
Replies
1
Views
6K
High School Longest photon wavelength observed?
  • · Replies 15 ·
Replies
15
Views
9K
Graduate Wick rotation and contour integral
  • · Replies 4 ·
Replies
4
Views
4K
Graduate QM Notation: What's the Difference Between A* & A-dagger?
  • · Replies 7 ·
Replies
7
Views
8K
Graduate Understanding Extra Internal Degree of Freedom from QM and SR
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Ground State Energy of an Electron
  • · Replies 4 ·
Replies
4
Views
30K
Graduate Paradox seemingly violating relativity
  • · Replies 8 ·
Replies
8
Views
2K
Graduate How to dertermine the Hamiltonian matrix
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Transformation of energy space to momentum space
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Mixed Quantum States: Definition, Uses & Homework
  • · Replies 3 ·
Replies
3
Views
7K
Graduate Crossing nodes of wavefunction
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Solutions of TISE - is it all about groping in the dark?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Force on Walls of Rectangular Potential Box by Particle Inside
  • · Replies 11 ·
Replies
11
Views
6K
Graduate What is the Explanation for the Double Slit Experiment in Quantum Mechanics?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Calculation of scattering amplitude ratio for two different angles
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Resonance states and complex energies
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Eigenkets of a function of a hermitian operator
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Explaining Holevo Additivity: A Simple Guide
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Wave packet conceptual question
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Faster then the speed of light
  • · Replies 8 ·
Replies
8
Views
2K
Graduate What is the solution for the quantum harmonic oscillator formula for nucleons?
  • · Replies 8 ·
Replies
8
Views
6K
Graduate Off the mass shell and external fields
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Entanglement and the double slit experiment
  • · Replies 4 ·
Replies
4
Views
4K
Graduate The Borderworld between Quantum and Classical Physics
  • · Replies 15 ·
Replies
15
Views
4K
High School Can uncertainties become smaller in certain cases?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Particle & Anti-Particle Question
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Spin Conservation in Beta Decay of 22Na: Explained
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Particle or Virtual Particle: What's the Difference?
  • · Replies 12 ·
Replies
12
Views
4K
Graduate What Do Feynman Diagrams Reveal About Time Reversibility?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Double Slit Experiment: Accounting for Other Particle Interactions
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Refraction due to attractive potential
  • · Replies 1 ·
Replies
1
Views
3K
Graduate The necessity of the 2nd quantization?
  • · Replies 15 ·
Replies
15
Views
7K
Graduate Bound states for a half harmonic oscillator
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Double-slit experiment - a couple of questions
  • · Replies 24 ·
Replies
24
Views
5K
Graduate Dimension of Hilbert Space in Quantum Mechanics
  • · Replies 7 ·
Replies
7
Views
8K
Graduate Dimensions and the Generating Functional
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Seven Questions for Quantum Physicists
  • · Replies 40 ·
2
Replies
40
Views
7K
Graduate What is the Controversy Surrounding Retrocausality?
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Can Noncommutative Operators Be Integrated in Quantum Mechanics?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Check If Operator Is Hermitian: Real Eigenvalue Test
  • · Replies 4 ·
Replies
4
Views
3K
Graduate How to get QFT operator expectation values?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Variational principle convergence
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is light an electromagnetic radiation. If so< then isn't it casued by
  • · Replies 2 ·
Replies
2
Views
2K
Graduate E=1/n^2 (-13.6eV) for other one-electron atoms –ionized helium (Z=2),
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is Radiative Loss Accounted for in the Usual Treatment of Compton Scattering?
  • · Replies 9 ·
Replies
9
Views
7K
Graduate Why Must Potential Energy V(x) Be Real in the Schrödinger Equation?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Understanding the Klein Gordon Lagrangian and Calculation Rules with Gradients
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Difference between ionization energy and photoelectric effect?
  • · Replies 2 ·
Replies
2
Views
15K
Graduate On General Measure of Entanglement
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Heisenberg Uncertainty Principal with regards to electron orbits
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Purely imaginary bound state wave functions?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate How to calculate the many-body wavefunction
  • · Replies 2 ·
Replies
2
Views
3K
Graduate HELP Can you find an electron in the exact middle of an S orbital?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Understanding Light: Questions & Answers
  • · Replies 32 ·
2
Replies
32
Views
7K
Graduate Fermi's Golden Rule and Density of States
  • · Replies 8 ·
Replies
8
Views
9K
Graduate How does the delta function relate to the momentum operator in Dirac notation?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Basic QM question: Why do we describe free particles using Aexp(ikx) ?
  • · Replies 15 ·
Replies
15
Views
10K