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.

Sub-forums

Quantum Interpretations and Foundations

Particle vs Wave Interpretations of QM
1.3K threads
Undergrad Particle vs Wave Interpretations of QM
Undergrad Multiplication of ladder-operators
  • Philip Land
  • · Replies 1 ·
Replies
1
Undergrad Quantum State: Electron, Proton, and Neutron Explained
  • Quantum9999
  • · Replies 1 ·
Replies
1
High School Entropy -- What exactly is it?
  • Levi Woods
  • · Replies 6 ·
Replies
6
Graduate Green's function for the wave function
  • Higgsono
  • · Replies 1 ·
Replies
1
Graduate Is the Fenna-Matthews-Olson complex a quantum dot?
  • Christopher Rourk
  • · Replies 1 ·
Replies
1
Undergrad Does quantum entanglement depend on the chosen basis?
  • microsansfil
  • · Replies 37 ·
2
Replies
37
Graduate Fermi-Dirac statistics, finding all electron configurations
  • sigint00
  • · Replies 3 ·
Replies
3
Undergrad What is the common & connection of quantum entanglement and entropy?
  • Dhammika
  • · Replies 4 ·
Replies
4
Graduate How to measure the first qubit in two qubit system? QC
  • Frank Schroer
  • · Replies 4 ·
Replies
4
Graduate Fresnel Diffraction - Opaque Barrier Question
  • frederico
  • · Replies 6 ·
Replies
6
Undergrad Phase and group velocity for a free particle
  • hokhani
  • · Replies 9 ·
Replies
9
Undergrad Interference between an electron and a photon?
  • Sandeep T S
  • · Replies 11 ·
Replies
11
High School Neutral pion quark composition help
  • Quarkyguy
  • · Replies 4 ·
Replies
4
Undergrad Does Multiplying Wavefunctions Affect Their Radius?
  • Bob Dylan
  • · Replies 5 ·
Replies
5
High School Is the classical EM wave a single photon?
  • S Beck
  • · Replies 12 ·
Replies
12
Undergrad Compound double slit with measurement on only one
  • Sting33
  • · Replies 20 ·
Replies
20
Undergrad Schmidt decomposition and entropy of the W state
  • yamata1
  • · Replies 1 ·
Replies
1
Undergrad Question about excited Helium states
  • Rafael
  • · Replies 3 ·
Replies
3
Undergrad Send the measurement device through a double slit
  • greypilgrim
  • · Replies 5 ·
Replies
5
Graduate How can quarks exist if they are confined?
  • DarMM
  • · Replies 65 ·
3
Replies
65
Graduate What is the role of Eve in a Man in the Middle attack?
  • Nur Ziadah
  • · Replies 6 ·
Replies
6
Undergrad Energy of a Wave & the Photoelectric Effect: Is My Statement Correct?
  • Sandeep T S
  • · Replies 6 ·
Replies
6
Undergrad Diffracted photon/partice momentum
  • negative
  • · Replies 11 ·
Replies
11
Graduate Seeking a derivation of Schrödinger's wave equation
  • gnnmartin
  • · Replies 12 ·
Replies
12
Undergrad Hertz Experiment: Original Paper on Photoelectric Effect
  • Sandeep T S
  • · Replies 8 ·
Replies
8
Undergrad The virtual photon can turn into a virtual electron positron?
  • Philipsmett
  • · Replies 6 ·
Replies
6
Graduate Clarification about conserved currents in the Standard Model
  • HomogenousCow
  • · Replies 6 ·
Replies
6
Undergrad No interference if orthogonally polarized
  • greypilgrim
  • · Replies 2 ·
Replies
2
Undergrad Photon detector on a dual slit experiment
  • rasp
  • · Replies 3 ·
Replies
3
Undergrad The Uncertainty Principle - question within Griffiths' Text
  • Sparky_
  • · Replies 1 ·
Replies
1
Undergrad Griffiths' Intro to Quantum Mechanics - primed variables
  • Sparky_
  • · Replies 10 ·
Replies
10
High School Is radioactive decay truly random?
  • JesW87
  • · Replies 5 ·
Replies
5
Undergrad How to interpret the diffraction envelope
  • Bill Sellers
  • · Replies 4 ·
Replies
4
Undergrad Are there proposed physical processes for superposition
  • rasp
  • · Replies 13 ·
Replies
13
Undergrad What makes a field theory relativistic?
  • LarryS
  • · Replies 2 ·
Replies
2
Undergrad Effect of Roughness on Cavity Resonator Spectrum
  • Swamp Thing
  • · Replies 2 ·
Replies
2
Graduate Dipole, harmonic oscillator, and the coherent state
  • Karthiksrao
  • · Replies 3 ·
Replies
3
Undergrad How Does Feynman's Theory Explain Light Reflection in Glass?
  • Srihari05
  • · Replies 1 ·
Replies
1
Undergrad Mathematics of Normalization in Physics
  • KurtLudwig
  • · Replies 4 ·
Replies
4
Undergrad What happens to entanglement inside a polarizer?
  • boxfullofvacuumtubes
  • · Replies 4 ·
Replies
4
Undergrad Can Spacetime Perturbance Reveal Paths in the Double Slit Experiment?
  • greypilgrim
  • · Replies 7 ·
Replies
7
Undergrad Can a qubit have a finite number of ontic states in an epistemic model?
  • msumm21
  • · Replies 1 ·
Replies
1
Graduate QFT Causality: Real Scalar Field & Probability
  • Aleolomorfo
  • · Replies 1 ·
Replies
1
Undergrad Electron and virtual electron-positron pair
  • Philipsmett
  • · Replies 1 ·
Replies
1
Undergrad Compton scattering in a Feynman diagram
  • nomadreid
  • · Replies 8 ·
Replies
8
Graduate Heisenberg/Schrodinger pictures versus passive/active
  • Geofleur
  • · Replies 10 ·
Replies
10
High School Can you measure a particle without breaking superposition?
  • TheQuestionGuy14
  • · Replies 4 ·
Replies
4
Undergrad Hypothetical Question About Particles & Movement
  • InfiniteEntity
  • · Replies 5 ·
Replies
5
Undergrad The allowed energies of a 3D harmonic oscillator
  • kkabi_seo
  • · Replies 3 ·
Replies
3
High School Ultraviolet Catastrophe & the Photoelectric Effect
  • Jimmy87
  • · Replies 1 ·
Replies
1
Undergrad Question about the solution of TISE (finite potential barrier)
  • Clara Chung
  • · Replies 5 ·
Replies
5
Undergrad About spin precession in a magnetic field
  • Francisco Dahab
  • · Replies 4 ·
Replies
4
High School Allowed and forbidden transitions
  • PainterGuy
  • · Replies 18 ·
Replies
18
Undergrad Understanding the Hermitian Conjugate in Inner Products
  • SebastianRM
  • · Replies 15 ·
Replies
15
Undergrad Question about one electron hydrogen atom angular moment
  • Rafael
  • · Replies 3 ·
Replies
3
Graduate Representing harmonic oscillator potential operator in. Cartesian basis
  • Apashanka
  • · Replies 7 ·
Replies
7
Undergrad Raising the ladder operators to a power
  • MooshiS
  • · Replies 3 ·
Replies
3
Undergrad Understanding Electrons: The Difference Between QFT and QED
  • Philipsmett
  • · Replies 10 ·
Replies
10
High School Have interference on single particles been mapped
  • Martyn Arthur
  • · Replies 4 ·
Replies
4
Undergrad Transistors and Quantum Physics
  • Zeynel
  • · Replies 12 ·
Replies
12
Undergrad Why are <dx/dt> and <dp/dt> 0?
  • EquationOfMotion
  • · Replies 14 ·
Replies
14
Graduate Is there an additional assumption in the PBR theorem?
  • PeterDonis
  • · Replies 120 ·
5
Replies
120
Undergrad Polarization and the beam splitter
  • Mentz114
  • · Replies 7 ·
Replies
7
Undergrad Resolvent formalism in quantum mechanics
  • Konte
  • · Replies 7 ·
Replies
7
High School So what is the new definition of the kilogram?
  • bbbl67
  • · Replies 63 ·
3
Replies
63
Undergrad Fermionic Field Time Ordering: Understanding the Time Ordered Contraction
  • Avogadro Number
  • · Replies 3 ·
Replies
3
Undergrad If the wave function is complex and the measurement is real
  • rasp
  • · Replies 4 ·
Replies
4
Graduate Diagonalization of Hubbard Hamiltonian
  • Guilherme
  • · Replies 1 ·
Replies
1
Undergrad Poles in Casimir force as function of frequency & mode
  • Swamp Thing
  • · Replies 2 ·
Replies
2
Graduate Is there an uncertainty in energy measurement in quantum mechanics?
  • CGandC
  • · Replies 17 ·
Replies
17
High School Are bosons always their own antiparticle
  • friend
  • · Replies 11 ·
Replies
11
Undergrad How can laser photons have the same precise energy?
  • LarryS
  • · Replies 15 ·
Replies
15
Undergrad Writing perturbed wave function
  • TheBlueDot
  • · Replies 1 ·
Replies
1
Undergrad Accuracy of time dilation measurement *in principle*
  • bland
  • · Replies 9 ·
Replies
9
Undergrad Thought experiment about superposition.
  • rasp
  • · Replies 3 ·
Replies
3
High School How slow can Gedanken experiments be theoretically?
  • NTHstars
  • · Replies 9 ·
Replies
9
Graduate Operators used without being explained
  • Technon
  • · Replies 4 ·
Replies
4
Undergrad About the Schrödinger equation
  • Konte
  • · Replies 19 ·
Replies
19
High School What Makes Two Identical Hydrogen Atoms Different?
  • Wondermine
  • · Replies 25 ·
Replies
25
Undergrad Solution of Quantum differential equation
  • Edge5
  • · Replies 4 ·
Replies
4
Undergrad Angular momentum and spin unit
  • Edge5
  • · Replies 8 ·
Replies
8
Undergrad Particle in a box, boundary co-ordinate change
  • I_laff
  • · Replies 3 ·
Replies
3
Graduate QED: redshifting light and infrared divergence
  • Ken Gallock
  • · Replies 7 ·
Replies
7
Undergrad Introduction to Quantum Mechanics
  • Bilal Rajab Abbasi
  • · Replies 3 ·
Replies
3
Undergrad Understanding PBR's Additional Assumption
  • DrChinese
  • · Replies 46 ·
2
Replies
46
Undergrad Simulations that disprove the PBR theorem
  • kurt101
  • · Replies 1 ·
Replies
1
Undergrad Derivatives of a normalizable wavefunction
  • dyn
  • · Replies 7 ·
Replies
7
Undergrad Some more questions about the PBR theorem
  • ftr
  • · Replies 9 ·
Replies
9
Graduate Covariance of equal time commutation relations
  • Betty
  • · Replies 3 ·
Replies
3
High School Can liquid helium conduct heat infinitely fast?
  • YoungPhysicist
  • · Replies 3 ·
Replies
3
Undergrad Is quantum mechanics formulated from 1st principles?
  • wmikewells
  • · Replies 10 ·
Replies
10
Undergrad Does a Quantum Field Creation Operator Create Particles at a Given Location?
  • acegikmoqsuwy
  • · Replies 1 ·
Replies
1
Undergrad Detecting Interference Patterns with Large Objects: The Double Slit Experiment
  • john taylor
  • · Replies 3 ·
Replies
3
Undergrad Calculating the eigenvalue of orbital angular momentum
  • TheBlueDot
  • · Replies 3 ·
Replies
3
Undergrad Expectation Value of f(x): Physical Meaning
  • Technon
  • · Replies 20 ·
Replies
20
High School Double slit experiment w/ light shining thru one aperture only
  • sqljunkey
  • · Replies 13 ·
Replies
13
Undergrad Can the quantum eraser experiment produce two different interference patterns?
  • nomadreid
  • · Replies 3 ·
Replies
3
Graduate Scanning Tunneling Microscope I-V curve
  • Edge5
  • · Replies 1 ·
Replies
1
Undergrad Can Quantum Suicide Be Modified to Create Quantum Insomnia?
  • john taylor
  • · Replies 6 ·
Replies
6
Undergrad Is Nature Non-Deterministic Due to Nonlocality in Quantum Mechanics?
  • msumm21
  • · Replies 4 ·
Replies
4