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

Undergrad Harper-Hofstader Model: Butterfly & Landau Levels Relationship

  • VishalSharma
  • · Replies 4 ·
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4

High School Can a point-like particle really exist in a 0-dimensional universe?

  • ChrisisC
  • · Replies 3 ·
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3

Undergrad Question for large quantum system

  • JasonWuzHear
  • · Replies 4 ·
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4

Undergrad Delayed choice quantum eraser -- Again....

  • vintch
  • · Replies 12 ·
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12

Undergrad Time dependent perturbation(determination of order)

  • gaus12777
  • · Replies 1 ·
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1

High School About creating a product state

  • KFC
  • · Replies 9 ·
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9

High School Can Everett Branches Break Quantum Laws?

  • bluecap
  • · Replies 17 ·
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17

High School Spectroscopy before tunable lasers?

  • houlahound
  • · Replies 7 ·
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7

Undergrad How see through the glass + reflection at same time

  • rxrus
  • · Replies 4 ·
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4

High School Is the Speed of Light 1 Planck Length per 1 Planck Time in Vacuum?

  • danihel
  • · Replies 18 ·
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18

High School Uncertainty Principle and a photon

  • backward
  • · Replies 17 ·
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17

Undergrad Delayed choice experiment clarification (specific setup)

  • evkph
  • · Replies 7 ·
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7

Undergrad Hermitian Operators in Dirac Equation

  • Higgsono
  • · Replies 2 ·
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2

Graduate What is De Broglie's Fictitious Wave?

  • avarmaavarma
  • · Replies 1 ·
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1

Undergrad What is the reason behind fermions being unable to share the same quantum state?

  • Higgsono
  • · Replies 5 ·
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5

High School Why Does Matter Become Solid When Observed? Max Planck's Theory

  • dieter007
  • · Replies 4 ·
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4

Undergrad Quantum numbers of Landau levels

  • spaghetti3451
  • · Replies 1 ·
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1

High School The Possibility of Induced Quantum Mechanical Tunneling?

  • Pau
  • · Replies 4 ·
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4

Graduate Correlation functions in an interacting theory

  • spaghetti3451
  • · Replies 1 ·
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1

High School How to create quantum entangled electrons

  • IsaiahvH
  • · Replies 7 ·
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7

High School Are photons really necessary in physics?

  • Uriel
  • · Replies 4 ·
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4

Graduate Wave of an outgoing anti-particle in quantum field theory?

  • goodphy
  • · Replies 1 ·
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1

Undergrad Bohr model, Why do we assume a standing wave?

  • kidsasd987
  • · Replies 12 ·
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12

Undergrad Do electrons really behave like waves?

  • LSMOG
  • · Replies 6 ·
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6

High School Why did Bohr & Company hold quantum reality to be indeterminate?

  • jeremyfiennes
  • · Replies 27 ·
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27

Undergrad Uncertainty Principle: Energy of Unstable Particle?

  • Kara386
  • · Replies 2 ·
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2

Undergrad Photoelectric Effect: quantum energy doubts

  • kiyoshi7
  • · Replies 13 ·
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13

Graduate Minimum uncertainty in electron position

  • FrederikPhysics
  • · Replies 3 ·
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3

Undergrad Explaining Music Notes Consonance with Wave Functions

  • JohnnyGui
  • · Replies 2 ·
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2

Undergrad Hamiltonian matrix - Eigenvectors

  • Konte
  • · Replies 2 ·
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2

Graduate H-theorem in quantum information theory

  • PeterDonis
  • · Replies 18 ·
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18

Undergrad Could somebody tell me good book about degenerate matter ?

  • VonNathan
  • · Replies 1 ·
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1

Undergrad Hartree Fock v.s. Configuration Interaction

  • Jan Hidding
  • · Replies 2 ·
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2

High School Does the Initial Emission in the Double Slit Experiment Have a Trajectory?

  • bluecap
  • · Replies 40 ·
2
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40

Graduate Conjugate variables in the Fourier and Legendre transforms

  • redtree
  • · Replies 1 ·
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1

Undergrad Macroscopic versus microscopic standing waves

  • Saw
  • · Replies 16 ·
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16

Undergrad Integration Method Used to Transform Equation 1 into Equation 2?

  • knockout_artist
  • · Replies 4 ·
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4

High School How long can a virtual particles exist in a vacuum state?

  • mitrasoumya
  • · Replies 1 ·
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1

Undergrad Entangled particle on a nanoprobe.

  • Tim Cavanaugh
  • · Replies 1 ·
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1

Undergrad Vacuum fluctuations - possible stupid question

  • Tim Gillespie
  • · Replies 4 ·
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4

High School How does a Bell State lead to a probability in the CHSH game

  • IsaiahvH
  • · Replies 6 ·
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6

Undergrad Why are E and gamma considered canonically conjugate in the Gauss law?

  • naima
  • · Replies 8 ·
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8

Insights What is the explanation for the existence of anyons in 2 dimensions?

  • Demystifier
  • · Replies 51 ·
2
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51

Graduate Transverse polarizations of a massless spin 1 particle

  • spaghetti3451
  • · Replies 3 ·
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3

High School Understanding the difference between |01>+|10> and |01>-|01>

  • IsaiahvH
  • · Replies 11 ·
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11

Graduate Factors in the theory of a complex scalar field

  • spaghetti3451
  • · Replies 1 ·
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1

Undergrad Decoherence and standard formalism

  • fanieh
  • · Replies 68 ·
3
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68

Undergrad Ionization and Nodes in the Hydrogen Wave Function

  • Jamison Lahman
  • · Replies 3 ·
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3

Insights Struggles with the Continuum - Conclusion - Comments

  • john baez
  • · Replies 3 ·
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3

Undergrad Unpolarised Light: Single Photons & Superposition

  • Dadface
  • · Replies 6 ·
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6

High School Which fundamental properties of particles can actually vary?

  • Hallucinogen
  • · Replies 21 ·
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21

Undergrad Is the velocity of two photons of different energies same?

  • TonyPSR
  • · Replies 1 ·
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1

Undergrad Yes, thank you for explaining it to me. I have a much better understanding now.

  • papanatas
  • · Replies 1 ·
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1

High School What does a Penning trap say about the electron?

  • Eric Walker
  • · Replies 52 ·
2
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52

High School Explain Electron Revolution in Quantum Mechanics

  • qasim4593
  • · Replies 2 ·
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2

Graduate Maxwell field commutation relations

  • eudo
  • · Replies 2 ·
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2

Undergrad Why Does U(1) Symmetry Allow Multiple Solutions in Lagrangians?

  • bhobba
  • · Replies 6 ·
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6

Undergrad Create black hole with lasers? Physics project

  • FilipLand
  • · Replies 5 ·
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5

High School Is Quantum Mechanics the Key to Unlocking New Energy Sources?

  • Algr
  • · Replies 4 ·
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4

Graduate Gauge invariance and covariant derivative

  • spaghetti3451
  • · Replies 1 ·
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1

Graduate Scale in mathematics vs in quantum physics

  • RockyMarciano
  • · Replies 30 ·
2
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30

Undergrad Delayed Choice Double Slit: Sending Info to the Past?

  • chad hale
  • · Replies 3 ·
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3

Submit your interview questions for Dr. James Gates

  • Greg Bernhardt
  • · Replies 26 ·
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26

Undergrad Permutation operator and Hamiltonian

  • TheCanadian
  • · Replies 2 ·
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2

High School Does the Uncertainty Principle work through barriers?

  • dccd286
  • · Replies 18 ·
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18

Undergrad Is Polarisation Entanglement Possible in Photon Detection?

  • Dadface
  • · Replies 251 ·
9
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251

Undergrad The ##1s^2## configuration of helium can't be triplet state?

  • Kara386
  • · Replies 15 ·
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15

High School Particle antiparticle collide, teleportation?

  • FilipLand
  • · Replies 9 ·
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9

Undergrad Can electrons transition collectively, emitting 1 photon?

  • TubbaBlubba
  • · Replies 13 ·
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13

High School Do we measure the particle or the wavefunction?

  • quantumfunction
  • · Replies 15 ·
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15

Undergrad What happens to wavefunction if you swap electrons?

  • Kara386
  • · Replies 5 ·
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5

Undergrad Bohr-Sommerfield quantization of motion

  • weezy
  • · Replies 3 ·
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3

Undergrad Periodic potential - energy bands

  • Konte
  • · Replies 8 ·
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8

Undergrad Breakdown of Planck's Law under certain Conditions

  • tade
  • · Replies 6 ·
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6

Undergrad Discrete vs Continuous Spectra in Blackbody Radiation?

  • greswd
  • · Replies 1 ·
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1

Undergrad Physical Significance of 2s Orbital Peaks?

  • tade
  • · Replies 23 ·
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23

High School Quantum field theory VS Quantum mechanics

  • AleksanderPhy
  • · Replies 2 ·
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2

Undergrad Planck's 1st Derivation of Planck's Law?

  • tade
  • · Replies 17 ·
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17

Graduate QFT, what are the transformation rules for

  • Jonsson
  • · Replies 11 ·
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11

Undergrad Function describing a traveling wavefield

  • fog37
  • · Replies 2 ·
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2

High School Software for quantum calculations?

  • houlahound
  • · Replies 3 ·
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3

High School Quantum Mechanics: Wave-Particle Duality Explained

  • Naman Jain Kota
  • · Replies 4 ·
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4

Undergrad Creation and annihilation operator commutation confusion

  • 43arcsec
  • · Replies 2 ·
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2

High School Wave function, units in the argument

  • Physou
  • · Replies 5 ·
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5

High School What does "orbital velocity" mean in a quantum setting?

  • sshai45
  • · Replies 4 ·
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4

Undergrad Is Quantum Mechanics Redefining Our Understanding of Mass Defect?

  • IvicaPhysics
  • · Replies 7 ·
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7

Graduate Parity and time reversal on derivatives and electric field?

  • Jonsson
  • · Replies 10 ·
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10

High School Is angular momentum of a quantum object, metaphorical?

  • bland
  • · Replies 28 ·
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28

Undergrad Relationship Between Hermitian and Symmetric Matrices

  • math_major_111
  • · Replies 3 ·
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3

Undergrad Why do the alternatives separate from each other?

  • Erland
  • · Replies 7 ·
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7

Undergrad QFT for the Gifted Amateur Question (3)

  • 43arcsec
  • · Replies 1 ·
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1

High School Understanding the Unitary and Branches Theorem in Quantum Mechanics

  • fanieh
  • · Replies 9 ·
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9

Graduate Quantized E field, Coulomb Gauge with Interactions

  • MisterX
  • · Replies 8 ·
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8

High School What Is Information? | Definition & Overview

  • Einstein's Cat
  • · Replies 5 ·
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5

Undergrad Ensembles and density matrices - I don't get it

  • Erland
  • · Replies 10 ·
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10

Undergrad The wave function is an exponential function, if I plot the

  • LSMOG
  • · Replies 3 ·
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3

Undergrad Test of Bell's Theorem: Experiments Beyond Polarization

  • Dadface
  • · Replies 6 ·
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6

High School Hydrogen Atom States Before Photon Emission | Help

  • Shing Ernst
  • · Replies 10 ·
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10

High School Quantum Physics -Double Slit Delayed Observation

  • Bill_W
  • · Replies 13 ·
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13

High School Can Measuring Momentum Make a Marble's Position Vanish?

  • fanieh
  • · Replies 6 ·
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6