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 Field Operators in Klein-Gordon theory
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Whcih Theory Of Quantum Mechanics Is The Right One?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Are Scalar Electromagnetics a Revolutionary Energy Source or Just Pseudoscience?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Energy levels in finite 1d well
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Why Irreducibel Representations?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Can Observing Particles Without Photons Overcome the Uncertainty Principle?
  • · Replies 1 ·
Replies
1
Views
2K
High School Double slit experiment -WHAt is it it showing or proving
  • · Replies 41 ·
2
Replies
41
Views
8K
Graduate Understanding Particle Mass Shells
  • · Replies 2 ·
Replies
2
Views
6K
Graduate Time Propagation: Evaluating "exp(-i*H*t)
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Quantum Well Levels: Energy Changes with Depth
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad What is the effect of gravity on light?
  • · Replies 14 ·
Replies
14
Views
15K
Graduate Do Polarizers Affect Entangled Photon Beams Differently?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Graviton and photon point particles in reality
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Fourier Transform of a wavefunction
  • · Replies 2 ·
Replies
2
Views
2K
Graduate DeltaXDeltaP Greater Than or Equal to h/4pi
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Could Quantum Time Be Confirmed by the LHC?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Wave/Particle Double Slit Experiment Questions
  • · Replies 10 ·
Replies
10
Views
10K
Graduate How small does sub-atomic universe go?
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Momentum operator as the generator of translations.
  • · Replies 69 ·
3
Replies
69
Views
19K
Graduate Feyman Diagram - Represent QED model(s)?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Two interacting electrons in 1D infinite well
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Entangling Photons: A Brief Overview of Quantum Interference
  • · Replies 4 ·
Replies
4
Views
18K
Graduate Rayleigh one-two photon, dipole approx
  • · Replies 1 ·
Replies
1
Views
2K
Graduate GHZ Experiment: Detections vs. Hidden Variables
  • · Replies 7 ·
Replies
7
Views
5K
Graduate Bellweather grants from FQXi foundation (straws in the quantum gravity wind)
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad Basic question about velocities of particles
  • · Replies 2 ·
Replies
2
Views
2K
Graduate How to Normalize the Basic Wave Equation
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Challenging the Collapse: Examining the Proof of State in Quantum Physics
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Is the Group Velocity Double the Phase Velocity at Low Velocities?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Hermitian adjoint of the time derivative?
  • · Replies 7 ·
Replies
7
Views
10K
Graduate Quantum Entanglement and retrocausality
  • · Replies 8 ·
Replies
8
Views
6K
Graduate Spin Exchange in Fermi Sea - Evaluating S_x \cdot S_{x+1}
  • · Replies 1 ·
Replies
1
Views
2K
Graduate A relativistic quantum theory of gravity
  • · Replies 49 ·
2
Replies
49
Views
30K
Graduate Understanding the Relationship Between Kronecker Delta and Dirac Delta
  • · Replies 4 ·
Replies
4
Views
20K
Graduate Vacuum state of the Klein-Gordon field
  • · Replies 9 ·
Replies
9
Views
7K
High School My First Double Slit Experiment
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Derivative inside, outside time ordering
  • · Replies 4 ·
Replies
4
Views
3K
Graduate What is the problem with the Stern Gerlach J=1 exercise?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Quantum Physics, Causality, and Logic
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Light Interaction with Electrons in Glass
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Davisson & Germer experiment question
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Calculating Broglie Wavelength for Helium Superfluid
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Can We See Photons With Naked Eye?
  • · Replies 21 ·
Replies
21
Views
5K
Graduate Revolutionary Experiment Confirms Incompleteness of Quantum Mechanics
  • · Replies 35 ·
2
Replies
35
Views
9K
Graduate Photons Detector not yielding which-path info.
  • · Replies 44 ·
2
Replies
44
Views
6K
Graduate Commuting Operators in Sequential Stern Gerlach Experiment
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Measurement and Stern Gerlach Experiments review articles?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Distance Between Atoms: How to Measure
  • · Replies 8 ·
Replies
8
Views
18K
Graduate Linus Pauling's Hydrogen Atom: MVR=nh/2pi?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Quantum Mechanics: Learning Bra-Ket Notation
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Coherent States of the Harmonic Oscillator
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Questions about the Density Operator Formulation of Quantum Mechanics
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Turning Off a Measuring Device: Wave-to-Particle Possibility?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate How Do Quantum Computers Use Qubits in Superposition for Calculations?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Unveiling the Mysteries of Photon Helicity
  • · Replies 2 ·
Replies
2
Views
10K
Graduate Is there any reason the Universe must have a wave function?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How do I calculate the initial alpha for an iterative process in a finite well?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Massless free field equation -> Maxwell's eqn.
  • · Replies 10 ·
Replies
10
Views
4K
Graduate What is a wave function and how does it describe the wave nature of a particle?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Concept of a renormalizable theory in Weinberg's feild theory book
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Understanding the Hamiltonian of a System: Explained for Beginners
  • · Replies 13 ·
Replies
13
Views
5K
Graduate Quantum computing and Nanoscale CAD
  • · Replies 5 ·
Replies
5
Views
2K
Graduate What Would Happen If 2 Protons Collided?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Solving Fermions: Finding States & Energies
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Why is the Weak Force So Weak?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Why spinor bec is called ''spinor bec''?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Why Don't Electrons Fall into the Nucleus Despite the Uncertainty Principle?
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Chirality vs Helicity: Explaining the Difference
  • · Replies 6 ·
Replies
6
Views
8K
Graduate Projection postulate - can it be verified?
  • · Replies 17 ·
Replies
17
Views
5K
Graduate Dirac delta spherical potential
  • · Replies 5 ·
Replies
5
Views
5K
Graduate What Is the Simplest Picture for Entangled Particles?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Can anyone improve the Gottesman and Chuang quantum digital signature scheme?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Are Ghosts a Scientific Myth or Reality?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Finding n for Line Spectra with 400 nm Wavelength
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Gravity and its effect on particles/molecules and bonds.
  • · Replies 7 ·
Replies
7
Views
8K
Undergrad Detecting Single Photon Energy
  • · Replies 3 ·
Replies
3
Views
6K
Graduate Questions about some material from Dirac
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Differentiation of an exponential with operators (Peskin p.84)
  • · Replies 4 ·
Replies
4
Views
8K
Graduate Is the Integral of the Square of Phase Density Constant in Classical Mechanics?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Electrons travel faster than the speed of light
  • · Replies 90 ·
4
Replies
90
Views
15K
Graduate The Principle of Least Action in Quantum Physics
  • · Replies 10 ·
Replies
10
Views
8K
Graduate Quantum attraction by exchange of particles
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Pair Annihilation and Conservation of Momentum and Energy Explained
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Renormalization in Fluidodynamics
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Total Spin of Two Particles w/ Spin 1
  • · Replies 2 ·
Replies
2
Views
4K
High School Basic question on electron, ion and photon excitation
  • · Replies 1 ·
Replies
1
Views
3K
Algebra Help: Attached File Guide
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is there a description of collapse in QFT ?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Pair Production and Momentum Transfer in Photon Interactions
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Heisenbergs Uncertainty Principle
  • · Replies 38 ·
2
Replies
38
Views
8K
Graduate What's wrong with Heisenberg's microscope?
  • · Replies 11 ·
Replies
11
Views
5K
Graduate What is the significance of singlets and gauge invariance in particle physics?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Is probability a Quantum Observable ?
  • · Replies 12 ·
Replies
12
Views
4K
Graduate Can a cat truly be the observer in Schrödinger's thought experiment?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Double slit experiment - quick question
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What the state of Quantum mechanics (QM) is?
  • · Replies 15 ·
Replies
15
Views
4K
Graduate Mach-Zehnder Interferometer at Wiki Question
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Question About Harmonic Oscillator in Griffiths - E=0 or E=1/2hw?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate What Is the Role of the Hamiltonian in Quantum Mechanics?
  • · Replies 35 ·
2
Replies
35
Views
6K
Graduate Rotate Photon Polarization: 90 Degrees?
  • · Replies 2 ·
Replies
2
Views
3K