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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Undergrad Can you measure momentum with a single measurement?
- Fiziqs
- · Replies 14 ·
Graduate Do photons have amplitude or only intensity from photon numbers?
- toneboy1
- · Replies 17 ·
Graduate Time-dependent Schrodinger equation for many particles
- AxiomOfChoice
- · Replies 1 ·
Graduate Solving Schroedinger's equation for Step Potential
- uday1236
- · Replies 2 ·
Graduate A thought experiment (excuse me if I have wrong information, i'm new)
- tracefleeman
- · Replies 9 ·
Graduate Feymman's theory, double slit experiment - Stephen Hawking
- jaumzaum
- · Replies 2 ·
Graduate Trace as a product of operators
- intervoxel
- · Replies 2 ·
Graduate Lasers/lifetime of metastable states on brightness of beam
- CAF123
- · Replies 1 ·
Graduate Eigen functions of momentum operator
- esornep
- · Replies 3 ·
Graduate Phase Factor of Spinors (what they represent)
- lzydesmond
- · Replies 18 ·
Graduate A Pauli and a Dirac electron, momentum density and spin.
- Spinnor
- · Replies 4 ·
Can positive thoughts change water molecules' structure?
- silvercats
- · Replies 2 ·
Graduate Is the radial part of the Laplacian in spherical coordinates Hermitian?
- geoduck
- · Replies 1 ·
Graduate Hyperfine splitting in Hydrogen atom
- DMESONS
- · Replies 1 ·
Graduate Why don't all observables commute in QM?
- San K
- · Replies 6 ·
Graduate HUP and the effects of measuring a particle
- Fiziqs
- · Replies 1 ·
Graduate Applications of Functional Analysis ?
- azari123
- · Replies 1 ·
High School Why do photons have frequency if they're particles?
- madness
- · Replies 20 ·
Graduate What is the Frequency in Einstein's Quantum Expression?
- exmarine
- · Replies 2 ·
Graduate Pair Production: Creating Matter from Light
- LiteHacker
- · Replies 3 ·
Graduate Explanation for uncertainty principal?
- scijeebus
- · Replies 1 ·
Graduate What Are Casimir Operators and Rest Reference Conditions in Particle Physics?
- noamriemer
- · Replies 2 ·
Graduate Why multiply ψ by ψ* to get probability density
- sciboudy
- · Replies 13 ·
Undergrad Plasma Frequency and Work Function
- Bonasa
- · Replies 1 ·
Graduate What is the Nature of Reality?
- Fiziqs
- · Replies 5 ·
Graduate The Multiple Worlds theory- it contradicts itself
- arjunmalhotra
- · Replies 6 ·
Graduate Is the Higgs Field a Key Player in Quantum Decoherence?
- Maui
- · Replies 12 ·
Graduate Newbie question - about Schroedinger's Cat
- studentxlol
- · Replies 10 ·
Graduate Sinha's triple slit experiment and water wave interference
- Fiziqs
- · Replies 2 ·
Graduate Why does the de Broglie equation show λ and v inversely proportional?
- moatasim23
- · Replies 13 ·
Graduate What are topological insulators and the quantum hall effect?
- Ryanzmw
- · Replies 1 ·
Is Our Reality a Simulation?
- silvercats
- · Replies 28 ·
Graduate No need for spooky action at a distance
- Suppaman
- · Replies 31 ·
Graduate Scalar Boson and Quantum Non-locality
- rodsika
- · Replies 1 ·
Undergrad How is the scattering cross section measured?
- wdlang
- · Replies 1 ·
Graduate Existance of ladder operators for a system
- espen180
- · Replies 2 ·
Graduate Do particles interfere with other particles in the double slit experiment?
- Fiziqs
- · Replies 1 ·
Graduate Schrodinger Equation and seperation of variables
- McLaren Rulez
- · Replies 7 ·
Graduate Newbie Question - Double Slit Experiment - 'Interference Patterns'
- SonOfBruze
- · Replies 13 ·
Graduate How do we know it's not some kind of attraction?
- scijeebus
- · Replies 4 ·
Graduate Is double slit experiment the only proof for quantum particles' superposition?
- silvercats
- · Replies 2 ·
Graduate Is quantum gravity a promising field?
- Fizicks1
- · Replies 1 ·
Graduate Problem about quantum environmental decoherence
- rocket123456
- · Replies 13 ·
Graduate Schrödinger and Heisenberg picture
- Kontilera
- · Replies 4 ·
Graduate How did Schrödinger's cat end up neither dead nor alive until observed?
- silvercats
- · Replies 25 ·
Graduate Why is the first type bessel function called first?
- wdlang
- · Replies 1 ·
Graduate How does the Schrödinger equation handle split wave-functions and blocked paths?
- San K
- · Replies 10 ·
Graduate Questions about properties of wave-functions
- San K
- · Replies 21 ·
Graduate What Else Splits in Single Particle Interference Experiments?
- San K
- · Replies 2 ·
Graduate Is any energy required to change the phase of a wave-function?
- San K
- · Replies 1 ·
Graduate 3-fold degeneracy: what is it?
- gioialorusso
- · Replies 2 ·
Graduate What Are Fermions and Bosons in the Meson Quark Model?
- Flavia
- · Replies 4 ·
Graduate Quantum well laser diodes - Operation and design
- manueldois
- · Replies 3 ·
Graduate Superposition principle and continuity
- sciboudy
- · Replies 5 ·
Undergrad Can the Photoelectric Effect Cause Metal Oxidation in a Vacuum?
- mihir23
- · Replies 2 ·
Graduate Renormalizing solutions of the Klein-Gordon equation
- nonequilibrium
- · Replies 2 ·
Graduate Quantum mechanics of hydrogen and many-electron systems
- Mendeleeff
- · Replies 2 ·
Graduate FermiDirac-BoseEinstein-Boltzman derivation
- Morgoth
- · Replies 1 ·
Undergrad How close must the wavelength of a photon be for an atom to absorb it?
- jailbait
- · Replies 2 ·
Graduate Superposition and Pauli's principle
- Mukilab
- · Replies 7 ·
Graduate Answer: What is Atom Spin: Physical or Property?
- Mukilab
- · Replies 7 ·
Graduate Visualisation in Quantum mechanics
- CAF123
- · Replies 5 ·
Graduate Causality in quantum mechanics
- tenchotomic
- · Replies 13 ·
Graduate Eigenfunction vs wave function
- Flavia
- · Replies 4 ·
Graduate Photons emitted by an accelerated charge
- Dickfore
- · Replies 6 ·
Graduate Brain freeze on Dirac EQ v. Dirac Hamiltonian
- jollyredgiant
- · Replies 7 ·
Graduate The Higgs field and the aether
- DaveHump3
- · Replies 3 ·
Graduate Higgs field and General Relativity
- DaveHump3
- · Replies 2 ·
Graduate Principal Quantum number: n to infinity?
- CAF123
- · Replies 4 ·
Graduate Quantum numbers (free particles)
- xz5x
- · Replies 2 ·
Graduate Grassmann variables and functional derivatives
- Einj
- · Replies 2 ·
Graduate Equation 2.33 in Peskin & Schroeder, divergent commutator terms
- aleazk
- · Replies 1 ·
Graduate Position vector r and uncertainty principle
- MHD93
- · Replies 4 ·
Graduate Uncertainty principle accuracy
- kapitan90
- · Replies 10 ·
Graduate Do spin-aligned electrons produce the same diffraction pattern as unpolarised electrons?
- cygnet1
- · Replies 2 ·
Undergrad Does a gamma ray photon have less energy than a radiowave photon?
- MegaDeth
- · Replies 17 ·
Graduate Why does confining a particle to a region give zero position uncertainty?
- CAF123
- · Replies 5 ·
Graduate Why does EPR predict binary polarization outcomes for correlated photons?
- Tomer
- · Replies 13 ·
Undergrad If the bohr model of the atom is correct
- Michio Cuckoo
- · Replies 23 ·
Graduate How to explain determinism and why QM seems counterintuitive
- HJ Farnsworth
- · Replies 25 ·
Graduate Complex term in refractive index , in context to rayleigh scattering
- royalbird
- · Replies 1 ·
Graduate Does beam splitter entanglement work like wavefunction collapse?
- ealbers
- · Replies 12 ·
High School Teleportion Questions - Michio Kaku Answers
- Reptile202
- · Replies 4 ·
Graduate Feynmann diagram for photoemission process
- arrektor
- · Replies 3 ·
Graduate New quantum experiments and its implications
- gespex
- · Replies 38 ·
Graduate I'm really new to the concept of quantum mechanics
- badamann
- · Replies 1 ·
Graduate Why don't quantum mechanics lectures include practice problems on bra-ket notation?
- robertjford80
- · Replies 30 ·
Graduate In what sense is QM not understood ?
- Doofy
- · Replies 164 ·
Graduate What Happens to Quantum Mechanics at E=U in Step Potential?
- CAF123
- · Replies 7 ·
Graduate Can electron revolving around atom become source of gravity.?
- aditya23456
- · Replies 2 ·
Undergrad Time Dilation in Childrens Cartoon
- Mako Ruu
- · Replies 9 ·
Graduate How Does Fermat's Principle Integrate with Quantum Physics?
- peter.ell
- · Replies 2 ·
Graduate How do you tell if lie groups are isomorphic
- geoduck
- · Replies 1 ·
High School Physical representation of direction
- ealbers
- · Replies 9 ·
Graduate Time symmetric quantum mechanics
- the_pulp
- · Replies 3 ·
Graduate Why the magnetic moment not included in the Lorentz Force equation.
- PolywellGuy
- · Replies 1 ·
Graduate How is the QM prediction derived for Bell's tests?
- San K
- · Replies 1 ·
Undergrad 2 slit experiment, what happen with 3,4,5 ?
- menniandscience
- · Replies 7 ·
Graduate Arrow of time in copenhagen interpretation.
- rocket123456
- · Replies 10 ·
Graduate Can Gravity Influence the Double Slit Experiment with Larger Particles?
- swhite44
- · Replies 49 ·