Quantum Physics Forum

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.

Threads

Graduate Many questions about qubit (quantum computing)

  • joy13975
  • · Replies 5 ·
Replies
5

Graduate Is any energy required to change the spin of a photon?

  • San K
  • · Replies 15 ·
Replies
15

Graduate Number of cycles of light per photon

  • DarioC
  • · Replies 20 ·
Replies
20

Graduate Why Does the Balmer Series Dominate the Solar Spectrum Over the Lyman Series?

  • fluidistic
  • · Replies 6 ·
Replies
6

Graduate Abnormal behavior of the Liouville-von-Neuman equation

  • freude3
  • · Replies 4 ·
Replies
4

Graduate How Do Photons Entangle Electrons?

  • LarryS
  • · Replies 4 ·
Replies
4

Graduate The failure of so-called no-communication theorems

  • al onestone
  • · Replies 1 ·
Replies
1

Graduate Indeterminism of Quantum Mechanics and incompatibility with Relativity

  • rethipher
  • · Replies 13 ·
Replies
13

Graduate Who developed this equation, Pauli?

  • PhilDSP
  • · Replies 3 ·
Replies
3

Graduate Is the delta in the commutation relations of QFT a dirac delta or a kronecker?

  • silence11
  • · Replies 6 ·
Replies
6

Graduate Lorentz invariant theory, irreducible representations

  • physicus
  • · Replies 2 ·
Replies
2

Graduate Understanding AdS and quantization in AdS

  • maverick280857
  • · Replies 19 ·
Replies
19

Graduate Could ‘Wheeler's delayed choice experiment’ be delayed?

  • leftriver
  • · Replies 6 ·
Replies
6

Graduate Quantum tunneling and extra dimensions

  • kuartus4
  • · Replies 6 ·
Replies
6

Graduate How stable/fragile is Quantum Entanglement?

  • San K
  • · Replies 6 ·
Replies
6

Graduate Static vs Dynamic: Can Massive Particles Have Parallel Spacetime Trajectories?

  • zonde
  • · Replies 8 ·
Replies
8

Graduate New loophole free EPR test with photons by Wittmann et al

  • harrylin
  • · Replies 30 ·
2
Replies
30

Graduate How does QE explain more mismatches in Bell's test at wider angles?

  • San K
  • · Replies 10 ·
Replies
10

Graduate Is gravity more fundamental than EM?

  • Pjpic
  • · Replies 1 ·
Replies
1

Graduate Does the wave function describe particle paths in the double slit experiment?

  • Fiziqs
  • · Replies 2 ·
Replies
2

Graduate Can 1014 atoms exhibit quantum superposition and interference?

  • DrZoidberg
  • · Replies 20 ·
Replies
20

Graduate Can We Differentiate Between Unpredictability and Randomness?

  • coktail
  • · Replies 2 ·
Replies
2

Graduate What does the partial derivative symbol ∂ mean in the Schrödinger equation?

  • 3m0k177y
  • · Replies 4 ·
Replies
4

Graduate Can we really call it an antineutrino?

  • Michio Cuckoo
  • · Replies 10 ·
Replies
10

Graduate Can Particles Really Pass Through Walls in the Quantum World?

  • azizlwl
  • · Replies 7 ·
Replies
7

Graduate Verifying the Partition Function of the Quantum Harmonic Oscillator

  • unchained1978
  • · Replies 2 ·
Replies
2

Graduate Why is quantum entanglement special?

  • mieubrisse
  • · Replies 22 ·
Replies
22

Graduate What is Bose symmetry?

  • center o bass
  • · Replies 1 ·
Replies
1

Graduate Does the Poisson Bracket Always Equal Zero When Both Observables Start at Zero?

  • tut_einstein
  • · Replies 2 ·
Replies
2

Graduate What does the double slit experiment actually show about wave-particle duality?

  • Fiziqs
  • · Replies 2 ·
Replies
2

Graduate Do Electrons Need to Be Observed By a Person?

  • quddusaliquddus
  • · Replies 23 ·
Replies
23

Graduate Complex exponential description of SHM

  • savvvvvvvvvvy
  • · Replies 2 ·
Replies
2

Graduate Determinant of a special conformal transformation

  • maverick280857
  • · Replies 5 ·
Replies
5

Graduate Schrödinger's equation, its derivation

  • robertjford80
  • · Replies 1 ·
Replies
1

Graduate Understanding S-Orbital When l = 0

  • mendes
  • · Replies 5 ·
Replies
5

Graduate Electron annihilation - what happens to gravity

  • Pjpic
  • · Replies 6 ·
Replies
6

Graduate Can a non-degenerate bound state have a complex wave function?

  • Nemanja989
  • · Replies 1 ·
Replies
1

Graduate Need advice with learning renormalization groups

  • Alesak
  • · Replies 7 ·
Replies
7

Graduate Pauli exclusion and covalent bonds

  • BWV
  • · Replies 9 ·
Replies
9

Graduate Can higher binding energy mean a higher bound state?

  • njl86
  • · Replies 2 ·
Replies
2

Graduate Trouble with noether's theorem

  • geoduck
  • · Replies 3 ·
Replies
3

Graduate Understanding communication via QE - is filtering the only obstacle? to FTL

  • San K
  • · Replies 3 ·
Replies
3

Graduate State of electron in hydrogen atom

  • sharma_satdev
  • · Replies 1 ·
Replies
1

Graduate Experimentally determine position of electron

  • catherinefow
  • · Replies 1 ·
Replies
1

Graduate What Are the Implications of the EPR Paradox on Quantum Mechanics and Locality?

  • the_pulp
  • · Replies 17 ·
Replies
17

Graduate Number of electrons in each shell

  • epsilonjon
  • · Replies 6 ·
Replies
6

Graduate Delocalization of electron in hydrogen atom

  • sharma_satdev
  • · Replies 1 ·
Replies
1

Graduate Path Integral Formulation: Allowable Paths?

  • LarryS
  • · Replies 2 ·
Replies
2

Graduate Importance of constrained Hamilton dynamics and BRST transformations

  • sphyrch
  • · Replies 2 ·
Replies
2

Undergrad How are stellar EM radiation formed?

  • ehabmozart
  • · Replies 2 ·
Replies
2

Graduate Coordinate representation of the momentum operator

  • MSLion
  • · Replies 5 ·
Replies
5

Graduate Why is angular momentum quantized?

  • TURK
  • · Replies 23 ·
Replies
23

Graduate Sudden changes, what happens to particle?

  • chill_factor
  • · Replies 1 ·
Replies
1

Graduate How is it possible that a superposition of z+ and z- can ever equal x-?

  • skynelson
  • · Replies 6 ·
Replies
6

Undergrad Understand the Collision of Electrons - Get Clarity from 'pf mentor

  • Amrutha.phy
  • · Replies 5 ·
Replies
5

Graduate Can you derive energy values for a rigid rotator and SHO without the Schrödinger equation?

  • sharma_satdev
  • · Replies 1 ·
Replies
1

Graduate Operations on a State in Different Bases

  • danmay
  • · Replies 2 ·
Replies
2

Undergrad What is the physical composition of energy?

  • aditya23456
  • · Replies 2 ·
Replies
2

Graduate What Went Wrong with Quantum Commutator Problems?

  • Qiward
  • · Replies 6 ·
Replies
6

Graduate Energy conservation in the classically forbidden region

  • QuasiParticle
  • · Replies 9 ·
Replies
9

Graduate Wheeler's delayed choice experiment and wave-particle duality

  • ashok vardhan
  • · Replies 1 ·
Replies
1

Graduate What does it mean to be momentum entangled?

  • San K
  • · Replies 4 ·
Replies
4

Undergrad Are the orbitals circular or spherical or parabolic? Are they 3D?

  • Amrutha.phy
  • · Replies 1 ·
Replies
1

High School Only metals undergo photoelectric effect?

  • Amrutha.phy
  • · Replies 3 ·
Replies
3

Graduate Degenerate Orbitals: Can Orbitals' Degeneracy be Affected?

  • Amrutha.phy
  • · Replies 3 ·
Replies
3

Undergrad Are Planets Electrically Neutral or Charged?

  • Amrutha.phy
  • · Replies 4 ·
Replies
4

Graduate Working on a movie and have a question on observer and double slit experiment

  • bdavlin
  • · Replies 3 ·
Replies
3

Undergrad What is quantum mechanics?

  • Patridor
  • · Replies 4 ·
Replies
4

Graduate Online Quantum Physics courses

  • SteveM19
  • · Replies 11 ·
Replies
11

Undergrad Understanding Electron Spin and its Role in Atomic Structure

  • thunderhadron
  • · Replies 5 ·
Replies
5

Graduate Time Evolution Of A 1-D Gaussian Wave Packet Under The Gravitational Potential

  • TheFinalThy
  • · Replies 4 ·
Replies
4

Undergrad Infrared Radiation: Where Does It Come From?

  • scientifico
  • · Replies 9 ·
Replies
9

Graduate Determining the Future Using Probability or Perception of Time?

  • legend_b0bby
  • · Replies 6 ·
Replies
6

Graduate What is magnetic flux quanta and how does it work?

  • mnada
  • · Replies 2 ·
Replies
2

Graduate What does the lost information in the wavefunction mean?

  • Runner 1
  • · Replies 1 ·
Replies
1

Graduate Derivation of the Larmor equation with spin-orbit coupling

  • Meselwulf
  • · Replies 2 ·
Replies
2

Graduate Lorentz invariance of chirality

  • Eruvaer
  • · Replies 4 ·
Replies
4

Undergrad How was pauli exclusion principle derived ?

  • mraptor
  • · Replies 1 ·
Replies
1

Graduate Can a photon be quantum entangled on more than one property/factor?

  • San K
  • · Replies 5 ·
Replies
5

Graduate Why Does the Time/Energy Uncertainty Principle Suggest a Lower Bound in Δt?

  • professorscot
  • · Replies 1 ·
Replies
1

Graduate Uncertainty Principle with time and frequency

  • Lord_Sidious
  • · Replies 8 ·
Replies
8

Undergrad What technologies based on quantum mechanics affect our daily lives?

  • Galteeth
  • · Replies 32 ·
2
Replies
32

Graduate Amplitude-Frequency Relationship in Energy Calculation

  • mraptor
  • · Replies 3 ·
Replies
3

Graduate Basic factors on which uncertainity depends on.?

  • aditya23456
  • · Replies 9 ·
Replies
9

Undergrad Virtual Particles: Sources from Leading Universities

  • cliffreich
  • · Replies 1 ·
Replies
1

Graduate Huckel method for cyclooctatetraene (C8H8)

  • JorisL
  • · Replies 2 ·
Replies
2

Graduate Do the properties of matter waves mirror that of the particle?

  • San K
  • · Replies 3 ·
Replies
3

Graduate Bell's theorem and the Mulder-Scully thought experiment

  • Catquas
  • · Replies 4 ·
Replies
4

Graduate How does the Runge-Lenz vector explain accidental degeneracies?

  • lugita15
  • · Replies 17 ·
Replies
17

Graduate Slater Determinant for simple covalent bond

  • nigelscott
  • · Replies 1 ·
Replies
1

Graduate How does LHV explain quantum entanglement swapping?

  • San K
  • · Replies 3 ·
Replies
3

Graduate Bell's test: Introducing a control experiment

  • San K
  • · Replies 3 ·
Replies
3

Graduate Hausdorff formula for anticommutation

  • mary1900
  • · Replies 2 ·
Replies
2

Graduate Berezin's correspondance of (anti-)symmetric function with functional

  • Tschijnmo
  • · Replies 1 ·
Replies
1

Graduate Does L² have eigenvalues ℏ²l(l+1) for all potentials?

  • atlantic
  • · Replies 2 ·
Replies
2

Graduate How Was Quantum Entanglement Theoretically Predicted?

  • San K
  • · Replies 1 ·
Replies
1

Graduate Schrodinger Equation in a representation

  • youngurlee
  • · Replies 7 ·
Replies
7

Undergrad Why is the function must be normalize ? what is the meaning of

  • sciboudy
  • · Replies 3 ·
Replies
3

Graduate What are vector/tensors operators in QM or in general any vector space

  • Sagnik.
  • · Replies 3 ·
Replies
3

Undergrad Electron Spins: Do Opposite Directions Collide?

  • Amrutha.phy
  • · Replies 4 ·
Replies
4