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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

Physics and Philosophy of Knowledge
1.3K threads
Undergrad Physics and Philosophy of Knowledge
Undergrad Qubit two-state quantum system
  • cianfa72
  • · Replies 29 ·
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29
Undergrad Another Interferometry question please
  • desertshaman
  • · Replies 5 ·
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5
Undergrad Can Topological Protection Extend the Lifetime of a Qubit?
  • Emrissa
  • · Replies 6 ·
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6
Undergrad Relation between operators and their variables' signs
  • hokhani
  • · Replies 13 ·
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13
High School Can a filter based on the photoelectric effect reduce the noise floor?
  • danielhaish
  • · Replies 8 ·
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8
Undergrad Incomprehension of a simple interferometer?
  • desertshaman
  • · Replies 17 ·
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17
Undergrad Double-dark Slit Interference Pattern?
  • Quarker
  • · Replies 15 ·
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15
Undergrad What kind of integration is Berezin integration?
  • pines-demon
  • · Replies 7 ·
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7
High School The Story of Least Action and the Double Slit
  • jedishrfu
  • · Replies 19 ·
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19
Undergrad Please help me understand the double slit experiment and conclusion
  • jackjack2025
  • · Replies 65 ·
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Undergrad Understanding the proof of Goldstone theorem
  • pines-demon
  • · Replies 4 ·
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4
Undergrad Quick question regarding creation/annihilation operators
  • MaestroBach
  • · Replies 1 ·
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1
High School Are the electron and neutrino that are emitted in a beta decay entangled?
  • rjhoward12447
  • · Replies 4 ·
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4
Undergrad Homemade double slit experiment
  • desertshaman
  • · Replies 11 ·
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11
Undergrad Have You Heard of the SEW Experiment? Thoughts?
  • ChadGPT
  • · Replies 3 ·
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3
Graduate Does x affect the value of [a^2,(a^†)^2×e^2ikx]
  • Sciencemaster
  • · Replies 2 ·
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2
Undergrad Units analysis for this phase shift problem using a differential equation
  • jhonconnor
  • · Replies 3 ·
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3
Undergrad Clarifying the Superposition Principle
  • MatinSAR
  • · Replies 8 ·
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8
Undergrad The physical components in the electron double slit experiment
  • jacobbry
  • · Replies 7 ·
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7
High School How does light have energy to follow infinite paths?
  • oknow
  • · Replies 6 ·
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6
High School The arrow of time (again)
  • TheHutch
  • · Replies 18 ·
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18
High School Yet another double slit thought experiment...
  • PhysicsIsReallyFun
  • · Replies 20 ·
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20
High School Probability function for the position of a static electron under no potential
  • Arend
  • · Replies 9 ·
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9
High School Photoelectric phenomenum can only be proved as a particle effect?
  • Arend
  • · Replies 5 ·
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5
Undergrad Femto-photography Michelson Morley Interferometer thought experiment
  • Spinnor
  • · Replies 2 ·
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2
High School Would Laplace's Demon work?
  • sayetsu
  • · Replies 12 ·
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12
Undergrad Quantum fields and "mediator" particles
  • Rick16
  • · Replies 7 ·
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7
High School Why is gravity a weak force at the atomic scale?
  • Arend
  • · Replies 8 ·
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8
Undergrad Entropic Tension Cosmology (ETC) 1.0
  • Charles1
  • · Replies 6 ·
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6
Undergrad What Are the Key Questions and Challenges in Understanding Quantum Gravity?
  • SephQ
  • · Replies 5 ·
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5
Graduate Historical clarification of the Planck formula of blackbody radiation
  • matteoargos
  • · Replies 3 ·
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3
High School Quantum Field Theory As Simple As Possible
  • bhobba
  • · Replies 2 ·
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2
Undergrad Far off resonant Rabi oscillations in a 2 level system
  • Malamala
  • · Replies 0 ·
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0
Undergrad Different expressions about time reversal and confusion
  • hokhani
  • · Replies 2 ·
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2
Undergrad Is the result of an operator acting on a ket vector always a ket？
  • gaiussheh
  • · Replies 16 ·
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16
Undergrad Double Slit Experiment: Measurement versus Observation
  • Praxiteles
  • · Replies 3 ·
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3
Undergrad Deriving the time-dependent wave equation from Energy eigenfunctions
  • Dirac_Clarity_GOAT
  • · Replies 1 ·
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1
Undergrad How Much Pressure To Cause Matter To Degenerate?
  • Hornbein
  • · Replies 11 ·
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11
Undergrad Particle in Infinite Square Well
  • AgingStudent49
  • · Replies 6 ·
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6
Undergrad Justification of Superposition of Waves with Different Speeds
  • greypilgrim
  • · Replies 19 ·
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19
Undergrad Particle in a potential well
  • Malvina
  • · Replies 11 ·
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11
Undergrad Feynman's summing arrows for photon amplitudes applied to LIGO?
  • Spinnor
  • · Replies 5 ·
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5
Undergrad Laws of thermodynamics and their application to quantum physics
  • Priscilaifrj
  • · Replies 2 ·
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2
Undergrad Explanation of the Bohr postulates' existence
  • Timothy S.
  • · Replies 3 ·
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3
Undergrad Can two photons combine to give a local field with spin 2?
  • south
  • · Replies 3 ·
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3
Undergrad Physical Meaning of Atomic Oscillations
  • Sciencemaster
  • · Replies 11 ·
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11
Graduate Pauli spin matrices
  • Eliena
  • · Replies 2 ·
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2
Undergrad The Pauli-Lubanski vector and angular momentum
  • redtree
  • · Replies 19 ·
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19
Undergrad Chunks of action smaller than Planck's constant
  • gerald V
  • · Replies 2 ·
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2
Graduate Collapse of the electron wave function due to inelastic interactions
  • Philip Koeck
  • · Replies 8 ·
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8
Undergrad Question regarding quantum mechanics from relativity perspective
  • Cjorgensen
  • · Replies 3 ·
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3
Undergrad Normalisation Constant In Wavefunction
  • laser1
  • · Replies 8 ·
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8
Graduate Has Hilbert transform ever been used in Quantum Theory?
  • mad mathematician
  • · Replies 3 ·
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3
Undergrad What do the wave functions of real particles look like?
  • AlbinoAlpacca
  • · Replies 13 ·
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13
Undergrad Uniqueness of quantum numbers
  • ecurbian
  • · Replies 3 ·
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3
Undergrad Time dependent Schrödinger equation - Separable Solutions
  • laser1
  • · Replies 12 ·
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12
Undergrad Is Newton the founder of quantum gravitation?
  • south
  • · Replies 5 ·
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5
Undergrad Lower energy levels with Dirac/Pauli theory than Schroedinger theory?
  • Juli
  • · Replies 5 ·
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5
Undergrad Amount of electrons in nuclei
  • snorkack
  • · Replies 10 ·
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10
Undergrad System of bosons
  • ananonanunes
  • · Replies 2 ·
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2
Undergrad Exchange symmetry of two particles on a sphere
  • Siupa
  • · Replies 1 ·
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1
Undergrad The probability density of a wave function due to length contraction
  • Wo Wala Moiz
  • · Replies 20 ·
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20
Undergrad 3 photon transfer probability
  • Malamala
  • · Replies 2 ·
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2
Undergrad Motivating the form of a bra vector
  • LightPhoton
  • · Replies 2 ·
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2
Undergrad How is superposition demonstrated?
  • Halc
  • · Replies 5 ·
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5
Undergrad Physics Today article collection
  • Frabjous
  • · Replies 1 ·
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1
High School Quantum wavelength of gravity
  • south
  • · Replies 11 ·
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11
Graduate Questions about changing frame in QM and rotating wave approximation
  • Malamala
  • · Replies 3 ·
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3
Graduate Classical interpretation of the Thomson experiment compared to the modern quantum perspective
  • PaulinsteinAmarx
  • · Replies 7 ·
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7
Undergrad Quantum field in curved space-time
  • Gary Venter
  • · Replies 4 ·
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4
High School Interference pattern inferencing
  • roineust
  • · Replies 8 ·
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8
Undergrad Macroscopic object wave function
  • fhenryco
  • · Replies 5 ·
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5
Undergrad Heisenberg Uncertainty Principle and macroscopic objects
  • wnvl2
  • · Replies 2 ·
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2
Undergrad How does the electron keep its properties?
  • JC_Silver
  • · Replies 5 ·
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5
Undergrad Understanding Randomness in Brownian Matter
  • EntropicThinker
  • · Replies 4 ·
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4
Graduate CHSH Bell inequality derivation
  • d_bar_x
  • · Replies 4 ·
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4
Graduate Born's probability in decoherence
  • Sr1
  • · Replies 3 ·
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3
High School Sketching Psi as a function of x
  • tsumugori
  • · Replies 15 ·
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15
Undergrad Famous 'Aspect Experiment' -- Which Type of Polarizers Were Used?
  • d_bar_x
  • · Replies 3 ·
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3
Undergrad Influence of electron's kinetic energy disspation during photoelectric emission
  • Timothy S.
  • · Replies 3 ·
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3
Undergrad 2-Slit: How do we know photon guns only produce single photons?
  • julianb
  • · Replies 33 ·
2
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33
Graduate Order of Galilean Boost / Translation on a wave-function (or fields)
  • binbagsss
  • · Replies 9 ·
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9
Graduate Vector Spaces Associated with Quark Modes in k-Space
  • Hamracek21
  • · Replies 0 ·
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0
Undergrad Diffraction of point source/s and duality
  • jk22
  • · Replies 2 ·
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2
High School Heisenberg uncertainty principle -- Questions about a practical experiment
  • L Drago
  • · Replies 34 ·
2
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34
Undergrad Delayed quantum eraser: turning off sensor to bring back interference
  • Herbascious J
  • · Replies 24 ·
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24
High School A homebrew quantum computer simulator
  • Bob Walance
  • · Replies 6 ·
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6
Graduate Entropy increase in proton/proton collision?
  • Twodogs
  • · Replies 4 ·
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4
Graduate Two-electron Lagrangian in QED
  • Fefetltl
  • · Replies 4 ·
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4
High School Is space-time curvature a curvature of the Higgs field?
  • C18
  • · Replies 2 ·
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2
Undergrad Relativity Considerations for Measurements on a Free Particle
  • member 743765
  • · Replies 1 ·
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1
Undergrad How to derive momentum operator in position basis via its definition?
  • LightPhoton
  • · Replies 6 ·
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6
Undergrad Why is the coupling factor constant in QFT?
  • Haorong Wu
  • · Replies 1 ·
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1
Undergrad How to find common eigenbases of momentum and energy in infinite well?
  • LightPhoton
  • · Replies 9 ·
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9
Undergrad Has superdeterminism been proven recently?
  • vertig0
  • · Replies 3 ·
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3
High School What particle represents the mass-energy conversion in a proton?
  • veemon293
  • · Replies 4 ·
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4
High School How would a hypothetical graviton escape a black hole?
  • DaveC426913
  • · Replies 10 ·
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10
Graduate Any relation between Quantum Chaos and Quantum Field Theory?
  • mad mathematician
  • · Replies 10 ·
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10
Graduate Spectral Decomposition of Constant Functions Utilizing Fourier Harmonics
  • Bret Danfoss
  • · Replies 7 ·
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7
Undergrad Lagrangian Mechanics, Continuous Particle Paths and QFT
  • Islam Hassan
  • · Replies 6 ·
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6