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.
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Graduate EPR experiment with twin photons then interference experiment
- TeCNoYoTTa
- · Replies 4 ·
Graduate Angular momentum and orientation of electron orbit with l = 0
- apr
- · Replies 3 ·
Graduate Bell's theorem hidden variables with Malus's law
- Badvok
- · Replies 98 ·
Graduate Why don't electron-positron pairs annihilate after pair production?
- quicksilver123
- · Replies 1 ·
Graduate Gross Perrywall phase transition
- Skeezer
- · Replies 6 ·
Graduate Why does Feynman use probability amplitudes and virtual photons in QED?
- res3210
- · Replies 2 ·
Graduate Atom when electrone is bombarded inside the nucleus
- Tada Amda
- · Replies 3 ·
Graduate Double-slit experiment, thought experiment
- tomwilliam2
- · Replies 13 ·
Graduate Reverse Entanglement: Theoretical Possibilities and Energy Conservation
- San K
- · Replies 2 ·
Undergrad Could two past events result in the same happening?
- Gonzalo
- · Replies 6 ·
Graduate Is there a preferred solution among the solutions to Schrödinger's eq?
- nomadreid
- · Replies 4 ·
Graduate Spherical tensor operators' commutation with lowering/raising operator
- cattlecattle
- · Replies 1 ·
Graduate Kraus Matrices and Unitary Matrix
- Henriamaa
- · Replies 1 ·
Graduate What is the difference between strong force and residual strong force?
- abi.ayan
- · Replies 1 ·
Graduate Which of these statements about tensor products is incorrect?
- nomadreid
- · Replies 3 ·
Graduate What do we mean when we say a particle is 'observed'?
- chestycougth
- · Replies 1 ·
Graduate Quantum Zeno effect for position measurement
- James MC
- · Replies 9 ·
Graduate Quantum Harmonic Oscillator necessary DE
- mjlist16
- · Replies 6 ·
Graduate Quantum Resonant Harmonic Oscillator
- rbwang1225
- · Replies 1 ·
Graduate What can we say about Bell theorem?
- ndung200790
- · Replies 17 ·
Graduate What is the Role of Fine Tuning in the Cosmological Constant Problem?
- geoduck
- · Replies 3 ·
Undergrad Energy of photons vs classical physics energy
- PBTR3
- · Replies 3 ·
Graduate Creation, annihilation and motion
- Kyleric
- · Replies 1 ·
Graduate Is there an analytical way to get average energy of a Fermi-Dirac gas?
- seflyer
- · Replies 5 ·
Graduate Double slit superposition vs Entanglement superposition
- San K
- · Replies 8 ·
Graduate Should |<A|B>|^2 always be interpreted as probability?
- nomadreid
- · Replies 21 ·
Graduate Third Loophole Against Entanglement Eliminated
- Charles Wilson
- · Replies 75 ·
Graduate Proving Completeness Relation for Box Normalization
- geoduck
- · Replies 15 ·
Graduate The difference between the packet length and the cohererence length
- zrek
- · Replies 8 ·
Graduate What happens after Compton scattering event?
- mitch_1211
- · Replies 5 ·
Graduate Infinities and short distances in QFT
- geoduck
- · Replies 2 ·
Graduate Calculating Correlation of Composite Operators
- geoduck
- · Replies 3 ·
Graduate Relation between actual measurement and Mathematical observables
- MHD93
- · Replies 2 ·
Graduate Can the 'mass' of bound states show up full propagator?
- center o bass
- · Replies 3 ·
Graduate Scholarpedia article on Bell's Theorem
- ttn
- · Replies 565 ·
Graduate Double-slit quantum eraser: measured patterns on screen
- msumm21
- · Replies 1 ·
Graduate How to determine quantum numbers for beta functions?
- lonewolf219
- · Replies 5 ·
Graduate Uncertainty Principal: Limit of measurement, or the nature of things
- coktail
- · Replies 2 ·
Graduate Causation between states or only between measurements?
- nomadreid
- · Replies 2 ·
Graduate Can Nature take exact random samples?
- Stephen Tashi
- · Replies 24 ·
Graduate Schroedinger's Apple: A Quantum Flux Dessert
- t_siva03
- · Replies 1 ·
Graduate Entanglement swapping - any correlation between previous partners?
- San K
- · Replies 8 ·
Graduate Why there is parity Symmetry ?
- Septim
- · Replies 12 ·
Graduate How do rotators create superpositions in the quantum Zeno effect?
- James MC
- · Replies 3 ·
Undergrad Why we find expectation value?
- rida
- · Replies 1 ·
Graduate Optoelectronics: Dark current caused by Quantum fluctuations?
- Teichii492
- · Replies 2 ·
Graduate What it means the theory violates unitarity
- Mesmerized
- · Replies 10 ·
Graduate Does an observable have to be represented by a self-adjoint operator?
- StarsRuler
- · Replies 6 ·
Graduate What is meant by being driven by quantum fluctuations in QPTs
- RickvB
- · Replies 1 ·
Graduate Connection between operator uncertainty and state superposition in quantum mechanics
- nomadreid
- · Replies 10 ·
Graduate Why does Schmidt decomposition make non-orthonormal states orthonormal?
- McLaren Rulez
- · Replies 8 ·
Graduate Blackbody radiation and the Ultraviolet Catastrophe
- Jimmy87
- · Replies 5 ·
Undergrad Why can't the magnetic quantum number exceed the orbital angular momentum quantum number?
- jbar18
- · Replies 9 ·
Graduate Why don't path variations in QM light reflection blur the mirror image?
- MikeGomez
- · Replies 4 ·
Graduate Product rule of derivative of expectation values
- jonnaraev
- · Replies 6 ·
Graduate Can the Two Slit Experiment Be Conducted Without Observer Influence?
- pcfun
- · Replies 1 ·
Graduate Energy conservation in successive measurements of a particle in an infinite well
- Jilvin
- · Replies 4 ·
Graduate Interaction of e.m radiation: from classical to quantum behavior
- Gruxg
- · Replies 3 ·
Graduate Derivative of Lagrangian with respect to momentum
- geoduck
- · Replies 6 ·
Graduate Photons Impact on the Visual Process
- iowahawk43
- · Replies 7 ·
Graduate Heaviside Step Potential - Tunneling
- klawlor419
- · Replies 3 ·
Graduate Does the Ward identity rescue a zero photon mass?
- center o bass
- · Replies 4 ·
Graduate What is ↔ mean? in commutation relation?
- rar0308
- · Replies 3 ·
Graduate Self energy logarithmic divergence due to chiral symmetry.
- center o bass
- · Replies 7 ·
Graduate Why the magnetic moment is zero for occupied levels?
- hokhani
- · Replies 6 ·
Graduate Blackbody radiation - quantum to classical
- spaghetti3451
- · Replies 1 ·
Graduate Why is the fine structure constant what it is?
- wotanub
- · Replies 10 ·
Graduate Why does dimensional regularization respect the Ward identity?
- center o bass
- · Replies 2 ·
Graduate Spacetime displacement operator in QFT
- Loro
- · Replies 11 ·
Graduate Creation Operators application
- lonewolf219
- · Replies 12 ·
Graduate Photon behavior after the polarizer
- San K
- · Replies 8 ·
Graduate Quantum mechanics and quantum field theory application ideas?
- erkant
- · Replies 3 ·
Graduate What grade of decoherence to be a classical aparatus
- StarsRuler
- · Replies 4 ·
Undergrad I do not understand Variable density
- Acadeus
- · Replies 2 ·
Graduate Hilbert Space in Quantum Mechanics
- klen
- · Replies 2 ·
Graduate Bitcoin Encryption and Quantum Computers (D-Wave)
- FallingMan
- · Replies 2 ·
Graduate How long do we need to wait for Quantum Computers?
- nowhat
- · Replies 3 ·
Graduate Experimental verification of indistinguishability for free particles?
- nonequilibrium
- · Replies 2 ·
Graduate Explain Energy Level Split for Two Atoms
- anhnha
- · Replies 1 ·
Graduate Operator equations vs. field equations
- mpv_plate
- · Replies 3 ·
Graduate Wavefunction after position measurement
- MHD93
- · Replies 3 ·
Graduate Relation between bare and full scalar booson propagator.
- center o bass
- · Replies 1 ·
Graduate What is common theme between U(1) SU(2) and SU(3)
- lonewolf219
- · Replies 8 ·
Graduate Does a stationary electron have a magnetic field?
- falcon32
- · Replies 2 ·
Graduate Quantum tunnelling/alpha decay
- tmv3v
- · Replies 3 ·
Graduate Is Quantum Experiment Randomness a Result of Incomplete Knowledge?
- rajeshmarndi
- · Replies 1 ·
Graduate Are subatomic movements random
- susskind99
- · Replies 12 ·
Graduate Are wavefunctions specifically describing electrons?
- lonewolf219
- · Replies 8 ·
Graduate The radial probability density for the hydrogen ground state
- ftr
- · Replies 9 ·
Graduate Superposition of macroscopic position states
- StarsRuler
- · Replies 1 ·
Graduate Quantization of hamiltonian with complex form
- Nixom
- · Replies 1 ·
Graduate Can Inertia Affect the Shape of Electron Clouds in Accelerating Ions?
- ravisastry
- · Replies 2 ·
High School What is the 4th dimension?
- tg22542
- · Replies 5 ·
Graduate Communication by means of entanglement for the layman
- Demos Mirak
- · Replies 8 ·
Graduate Ladder operator for harmonic oscillator, I don't get a mathematical
- fluidistic
- · Replies 3 ·
Graduate How Should We Think About Quantum Mechanics?
- AlfieD
- · Replies 8 ·
Graduate QED Interaction Lagrangian with two different fermions
- lfqm
- · Replies 4 ·
Graduate Feynman diagrams - electrical charges
- Camille
- · Replies 4 ·
Graduate Angular momentum operators as infinitesimal generators
- Yoran91
- · Replies 1 ·
Graduate Why does Quantum Mechanics have objective statistical characteristic?
- ndung200790
- · Replies 3 ·