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 What is the Smallest Unit of Time for Measuring Acceleration?
- SinghRP
- · Replies 1 ·
Graduate Visualising mathematical concepts in QM - comments needed
- matt2971
- · Replies 4 ·
Graduate Blurness of rings in electron diffraction
- hoshizora
- · Replies 2 ·
Is 'A Universe from Nothing' worth reading?
- drphysica
- · Replies 16 ·
Graduate An issue with the vector model of spin and its operators
- JeremyEbert
- · Replies 7 ·
Graduate Equivalent vectors in a Hilbert space
- bob900
- · Replies 6 ·
Graduate Quantum Mechanical Tunneling Probability
- Demon117
- · Replies 1 ·
Graduate Double-slit experiment questions
- v6WR5Pfk6Jm4
- · Replies 3 ·
Graduate Can Two Particles Occupy the Same Position in Quantum Mechanics?
- ndung200790
- · Replies 11 ·
Graduate Big bang according to Quantum Mechanics?
- StayFrosty
- · Replies 14 ·
Graduate Photon Emission from electrons and the EM field
- Xcellerator
- · Replies 2 ·
Graduate Who does or sees an experiment on rectangluar potential barrier?
- Younghun park
- · Replies 2 ·
Graduate Trying to understand Quantum Entanglement, String Theory, and the BB
- Tomrin
- · Replies 2 ·
Graduate Conservation of L^2 and Lz in central potential
- center o bass
- · Replies 2 ·
Graduate What is the hardest question to ask a quantum physicist?
- realblonde
- · Replies 68 ·
Graduate Do you use QM in Conjunction With QED/QCD?
- Drakkith
- · Replies 6 ·
Graduate Solution to the dirac equation and the square root of a matrix?
- center o bass
- · Replies 3 ·
Undergrad Does observation in the double slit experiment require conscious awareness?
- nukeman
- · Replies 9 ·
Graduate Born rule for degenerate eigenvalue
- dEdt
- · Replies 5 ·
Graduate Mass of Electron: What is True?
- daisey
- · Replies 4 ·
Graduate Can a Charge to Planck Mass Ratio Be Validly Calculated?
- Meselwulf
- · Replies 1 ·
Graduate Some questions on planck constant
- KFC
- · Replies 1 ·
Graduate Lonely Hydrogen Atom in Space (casimir)
- Jeronimus
- · Replies 1 ·
Graduate I have no idea what 'Normalize'/'Normalization' means Help please?
- jumi
- · Replies 11 ·
Graduate Are particles considered to be standing waves?
- Drakkith
- · Replies 4 ·
Graduate Can Entangled Particles Be Used for Quantum Communication?
- Lost in Space
- · Replies 9 ·
Graduate Do virtual particle pairs interact gravitationally?
- bahamagreen
- · Replies 24 ·
Graduate Generator of Rotations and commutation relationships
- Meselwulf
- · Replies 6 ·
Graduate Building the CRT's for the Double Slit Experiment
- Jordan Heath
- · Replies 5 ·
Graduate From unitary operator to hamiltonian
- KFC
- · Replies 7 ·
Graduate Understanding Unitary Operator Evolution in Quantum Mechanics
- KFC
- · Replies 4 ·
Graduate Reconciling DeBroglie and Dirac?
- exmarine
- · Replies 6 ·
Graduate Does the Schrodinger Equation Describe Particles Popping In/Out of Existence?
- Sparky_
- · Replies 3 ·
Graduate Lande g-factor and total angular momentum conservation
- center o bass
- · Replies 1 ·
Graduate Is nothing an unstable thing that violates HUP?
- SeventhSigma
- · Replies 15 ·
Graduate What would you consider to be the most quintessential equations of QM?
- SnotRocketSci
- · Replies 9 ·
Graduate Proving gamma matrix transposition identity
- LayMuon
- · Replies 5 ·
Graduate Don't understand continuous basis
- Alesak
- · Replies 10 ·
Graduate How to Derive the Chern-Simons Contribution to the Effective Action?
- Kirjava
- · Replies 4 ·
Graduate Representations of the Lorentz group
- center o bass
- · Replies 2 ·
Graduate Quantum eraser input polarization
- gespex
- · Replies 2 ·
Graduate Building a quantum computer from living parts (FMO proteins)
- PavonisStar
- · Replies 1 ·
Graduate Proof of traceless gamma matrices
- center o bass
- · Replies 2 ·
Graduate Relation between quantum computer and quantum field theory?
- erkant
- · Replies 2 ·
Graduate How many combinations are possible with the four quantum numbers?
- San K
- · Replies 4 ·
Graduate Does CP Violation in Weak Interaction Suggest Perpetuum Mobile of Second Type?
- snorkack
- · Replies 3 ·
Graduate How much mathematics do I need to know to start Quantum Field Theory?
- HakimFaizaan
- · Replies 4 ·
Graduate Charge conjugation in second quantization
- LayMuon
- · Replies 2 ·
Graduate What really is a Weak Measurement?
- Varon
- · Replies 10 ·
Graduate Is more than 99.9% of any object is just empty space?
- zzgl
- · Replies 29 ·
Graduate Do photons have spin-induced magnetic moments?
- qinglong.1397
- · Replies 2 ·
Graduate Sakurai proof Wigner-Eckart theorem
- detste
- · Replies 1 ·
Graduate Explanation from Part of Griffith's text (Differential Equation)
- tylerscott
- · Replies 5 ·
Graduate Imaginary eigenvalues of gamma matrices
- center o bass
- · Replies 7 ·
Graduate Velocity and Phase Velocity of Matter Wave
- hschia
- · Replies 7 ·
Graduate How do we measure the position of a particle?
- the_pulp
- · Replies 3 ·
Graduate Independent fields in euclidean space
- geoduck
- · Replies 4 ·
Graduate Photoelectric effect with n photons
- Dr_Scientist
- · Replies 1 ·
Graduate Detection loophole vs. Spooky action at a distance
- gespex
- · Replies 3 ·
Graduate Does the Higgs boson discovery support quantum indeterminism over Einstein's determinism?
- ananthu
- · Replies 4 ·
Graduate String Theory: Is Energy a Physical Entity?
- jaydnul
- · Replies 6 ·
Graduate Helium II crawling and fountain effect questions
- Hut
- · Replies 5 ·
Undergrad Schrodinger Equation, Potential
- Jonnyb42
- · Replies 2 ·
Graduate Why does the Planck hypothesis give average energy kT for low frequencies?
- The Head
- · Replies 2 ·
Graduate Is the law of noncontradiction still applicable in quantum physics?
- DarkFalz
- · Replies 7 ·
Graduate Adding energy to confined particles
- rimmini
- · Replies 1 ·
Graduate Difference between KT and ferro-para phase transitions in 2D
- wdlang
- · Replies 1 ·
Graduate Exclusion principles for fermions and bosons
- Brandon1994
- · Replies 2 ·
Graduate Electron/Hole Effective Mass vs Solar Cell efficiency
- jnguyen7
- · Replies 1 ·
Graduate Quantum Entanglement at the Big Bang
- Louie-Pismo
- · Replies 3 ·
Graduate Proving the Poisson summation formula (like a physicist)
- center o bass
- · Replies 1 ·
Graduate Gauge invariance requires gauge bosons, why not for neutral fermions?
- bcrowell
- · Replies 19 ·
Graduate How do photons interact in magnetism and how is the force felt
- jmmy
- · Replies 13 ·
Graduate How to understand the standard momentum introduced in Weinberg's QFT
- qinglong.1397
- · Replies 10 ·
High School Can you do the double slit experiment with a laser pointer and foil?
- Cpac73322
- · Replies 4 ·
Graduate Why does Klein-Gordon's equation not obey quantum mechanics?
- Imanbk
- · Replies 4 ·
Graduate What does Quantum entanglement tell about Causality?
- Soumya_M
- · Replies 10 ·
Graduate What are the units for spectral energy density according to the Planck Law?
- Fr34k
- · Replies 1 ·
Graduate Does New Research Disprove Heisenberg's Uncertainty Principle?
- d3mm
- · Replies 4 ·
Graduate Does quantum mechanics require a constant universal time?
- Endervhar
- · Replies 12 ·
Graduate Experimental violation of HUP in its original form
- bcrowell
- · Replies 4 ·
Graduate 2 scientists think they have defeated the uncertainty principle
- g.lemaitre
- · Replies 1 ·
Graduate Why associate probability with the deterministic Schrödinger equation
- galoisjr
- · Replies 2 ·
Undergrad Question with electromagnetic radiation
- bumblee133
- · Replies 1 ·
Graduate Fermion Anticommutation Relations (nightmare)
- latentcorpse
- · Replies 9 ·
Graduate Learning path to quantum spin Hall effect after integer QHE
- ck00
- · Replies 1 ·
Graduate Rationale of the position operator?
- PerpStudent
- · Replies 3 ·
Graduate Gaussian wave packet k' term in time evolution
- Don'tKnowMuch
- · Replies 7 ·
High School How do you normalize a function?
- laser123
- · Replies 3 ·
Graduate Wave function of a flame or fire
- rodsika
- · Replies 6 ·
Graduate Wave Function Collapse: Quantum Mechanics by Griffith
- nouveau_riche
- · Replies 8 ·
Graduate Ehrenfest Theorem - Does Classical Mechanics Need Big Particles?
- geoduck
- · Replies 5 ·
Graduate Can wave particle duality be viewed at macroscopic scale ?
- shivaniits
- · Replies 2 ·
Graduate What happens when we insert detectors in a delayed choice experiment?
- entropy15
- · Replies 1 ·
Graduate Sakurai 1st edition vs. Sakurai 2nd edition?
- JVanUW
- · Replies 1 ·
Graduate What is the speed of light doing in the spin half hamiltonian?
- center o bass
- · Replies 4 ·
Graduate Who is puzzled by the delayed choice?
- Demystifier
- · Replies 86 ·
Graduate Lorentz invariance of [itex] E_p \delta ({\bf p}- {\bf q}) [/itex]
- LayMuon
- · Replies 8 ·
Graduate Model of the universe/quantum computing
- lntz
- · Replies 1 ·
Graduate Confusion about Wave / Particle Behaviour of X-Rays
- cavis
- · Replies 4 ·