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
Graduate Treating Mass as a perturbation
- Sekonda
- · Replies 2 ·
Undergrad Classical physics vs quantum physics
- jd12345
- · Replies 1 ·
Graduate Derivation of current density in quantum mechanics
- Lojzek
- · Replies 8 ·
Graduate Convergence of Atomic Orbitals 2s and 2p with high Z number
- shihabdider
- · Replies 1 ·
Graduate Quantum tunnelling and black holes
- AdamBenHamo
- · Replies 2 ·
Graduate Gravitational/Electrostatic self-interactions of wave function
- O'Fearraigh
- · Replies 1 ·
Graduate How photoelectric effect shows particulate nature of light?
- Punch
- · Replies 2 ·
Graduate Can velocity and wavefunction help prove Probability Current Density?
- einstein1921
- · Replies 7 ·
Graduate Why is hydrogen stable but lepton pairs aren't?
- Hetware
- · Replies 5 ·
Graduate Estimate decoherence time and length?
- athenee
- · Replies 2 ·
Graduate Stupid question on the qed renormalization
- paolorossi
- · Replies 2 ·
Graduate Quantised energy of a confined system
- CAF123
- · Replies 6 ·
Graduate Energy transfer during photon interaction
- San K
- · Replies 11 ·
Graduate Understanding Quantum Tunneling: Is the Schrodinger's Equation the Key?
- paulzhen
- · Replies 5 ·
Graduate Can We Measure Velocity with Zero Uncertainty?
- IWantToLearn
- · Replies 27 ·
Graduate Quantum transistors in aircraft aileron control systems
- scumhearted
- · Replies 4 ·
Graduate Doubts about heisenbergs uncertainty principle.
- cartik
- · Replies 4 ·
Graduate Exponental Tunnelling Factor (Electron Microscope)
- ZedCar
- · Replies 1 ·
Graduate Spontaneous vs Stimulated Emission
- center o bass
- · Replies 4 ·
Graduate Some questions about Vibration and Quantum Physics(Pretty simple I think)
- nukeman
- · Replies 13 ·
Graduate Explaining Pure States and Stationary States in Quantum Mechanics
- Aziza
- · Replies 5 ·
Graduate What causes the repulsion between an electron and proton in the hydrogen atom?
- azaharak
- · Replies 16 ·
Graduate Complete sets and eigenvalues question
- VortexLattice
- · Replies 3 ·
Graduate Tackling the middle ground of quantum mechanics
- DiracPool
- · Replies 11 ·
High School How do you build a double-slit experiment at home?
- This Guy <-
- · Replies 20 ·
Graduate Classical vs Quantum mechanics
- Laptu
- · Replies 7 ·
Graduate QM Puzzle: Can One Particle Have Multiple States?
- aaronsky12
- · Replies 9 ·
Graduate Calculating <p>_c for Charge-Conjugated Dirac Spinor
- qinglong.1397
- · Replies 10 ·
Graduate Heisenberg picture manifests Lorentz invariance?
- cosmic dust
- · Replies 2 ·
Graduate Quantum vacuum nothing or sea of energy
- osman ibn ali
- · Replies 1 ·
Graduate How to interpret the field function Φ in QFT?
- yicong2011
- · Replies 31 ·
Graduate PBR no-go theorem: Is ψ epistemic or ontic? An experimental test
- bohm2
- · Replies 12 ·
Graduate Peskin & Schroeder p. 285, change of variables integration measure
- naele
- · Replies 4 ·
Graduate QFT Question: What is meant by dipole form ?
- spooky51
- · Replies 2 ·
Graduate Energy Level Transitions, transition time for e- to change energy states in atom
- Albertgauss
- · Replies 11 ·
Graduate How is Eq. 31 Derived in the Foldy Wouthuysen Paper?
- kbarger
- · Replies 5 ·
Graduate Angular momentum ladder operators and state transitions
- JeremyEbert
- · Replies 5 ·
Graduate Why won't this information sending work?
- bob900
- · Replies 5 ·
Graduate What causes superpositions to collapse when particles are observed?
- Mukilab
- · Replies 13 ·
Graduate Understanding Group Velocity for Wave Packets in a 1-D Particle in Box
- hokhani
- · Replies 1 ·
Graduate Feynman Diagrams: Does Distance Affect Electromagnetic Interaction?
- big_bounce
- · Replies 2 ·
Graduate What is a virtual photon and how is it used in quantum field theory?
- big_bounce
- · Replies 6 ·
Graduate Entangled particles and relativity
- DrZoidberg
- · Replies 17 ·
Graduate Confusion (8) from Weinberg's QFT.(Lippmann-Schwinger eqn)
- kof9595995
- · Replies 5 ·
Graduate Transformation properties of derivative of a scalar field
- ianhoolihan
- · Replies 40 ·
Graduate So, does God play dice with the Universe or not?
- esmeralda4
- · Replies 18 ·
Graduate Wavefunction collapse and antisymmetry
- Amok
- · Replies 7 ·
Graduate Phase and Gauge Transformations
- unchained1978
- · Replies 11 ·
Graduate Conceptual underpinning(s) of the QM projection postulate
- ThomasT
- · Replies 31 ·
Graduate Critique This Simple Faster Than Light Mechanism - Possible?
- Theheretic
- · Replies 3 ·
Graduate What is the Origin of Spin 1/2 in Quantum Field Theory?
- cabrera
- · Replies 12 ·
Graduate Spin in Fundamental Particles: Intrinsic Angular Momentum & Atomic Orbitals
- DiracPool
- · Replies 2 ·
Graduate Understanding energy transfer during the process of entanglement
- San K
- · Replies 13 ·
Graduate Gravitational Field Paradox Explanation?
- Theheretic
- · Replies 9 ·
Graduate Does hamiltonian/energy eigenstate always exist?
- kokolovehuh
- · Replies 4 ·
Graduate Why are the only possible values of an operator its eigenvalues?
- randomafk
- · Replies 2 ·
Graduate [quantum tunneling] Debate with a friend, am I right?
- uperkurk
- · Replies 7 ·
Graduate A simple definition to Non-Relativistic Quantum mechanics?
- M. next
- · Replies 4 ·
Graduate Commutation Relationships and Operator Functions
- chill_factor
- · Replies 1 ·
Graduate Simultaneous measurement article
- Mordred
- · Replies 1 ·
Graduate Hermitian operator <=> observable?
- Arijun
- · Replies 17 ·
Graduate Constructing quantum operators
- HJ Farnsworth
- · Replies 10 ·
Graduate Interference of two independent electron beams?
- tris_d
- · Replies 6 ·
Graduate How to expand the average <(N - <N>)^2>
- mitch_1211
- · Replies 6 ·
Graduate Complex Vector Space Analogy To Quantum Mechanics
- CrazyNeutrino
- · Replies 10 ·
Graduate Heisenberg uncertainty principle
- angy
- · Replies 6 ·
Graduate Coherent state of photons in a laser
- zincshow
- · Replies 6 ·
Graduate Some thoughts on the hidden variables interpertation
- HomogenousCow
- · Replies 2 ·
Graduate Can Quantum Theory Apply to Large-Scale Universe Phenomena?
- Adrian07
- · Replies 2 ·
Graduate Calculating Secondary Electron Energy After 2 MeV Photon Scattering
- j2dabizo
- · Replies 3 ·
Graduate The electron - couple questions
- DiracPool
- · Replies 4 ·
Undergrad Understanding the Quantum of Light: The Mystery of Photons Explained
- Antuanne
- · Replies 1 ·
Graduate Double Slit Experiment Question
- Astro_Will
- · Replies 1 ·
Graduate Determinism & Scale: Quantum Effects on Macroscopic Objects
- popepius
- · Replies 1 ·
Graduate Completeness relation for polarization vectors
- center o bass
- · Replies 2 ·
High School What is the box in particle in a box?
- mishima
- · Replies 3 ·
Graduate Is commutativity transitive for non degenerate eigenvalues?
- bob900
- · Replies 1 ·
Graduate Magnetic moment of the electron and spin
- Thoros
- · Replies 7 ·
Graduate What is Isospin and How Does it Relate to the Strong Force?
- Antuanne
- · Replies 2 ·
Graduate Wave-Particle Duality: Random Photon Emission
- severo
- · Replies 5 ·
Graduate Is objective reality possible under orthodox QM?
- cdog1350
- · Replies 13 ·
Graduate Change in fine structure constant
- lark
- · Replies 18 ·
Graduate How did Schrodinger's model improve Bohr's model?
- mahrap
- · Replies 2 ·
Graduate Stationary States and time-independent states (aren't they the same?)
- MrMultiMedia
- · Replies 4 ·
Graduate Quantum particle in a rigid box with 2 given wavefunctions solving for energies
- CNMD
- · Replies 3 ·
Graduate What does a deBroglie wave look like?
- jimgraber
- · Replies 1 ·
Graduate Amount of energy required to change the spin of a photon
- San K
- · Replies 15 ·
Graduate Probability of finding particle
- Aziza
- · Replies 6 ·
Graduate Bras and kets vs. Einstein summation convention
- HJ Farnsworth
- · Replies 5 ·
Graduate Quantum Distance? (See me derive it.)
- LiteHacker
- · Replies 3 ·
Graduate Is the Hydrogen Energy Level Formula Truly Degenerate in j?
- copernicus1
- · Replies 1 ·
Graduate Why must Quantum Computers be reversible?
- Lovelace
- · Replies 5 ·
Graduate Could a Semiconductor Plate Alter the Casimir Effect?
- Ergatron
- · Replies 6 ·
Graduate The Origins of Quantum Physics
- Master Wayne
- · Replies 6 ·
Graduate What happens to the wave function after it collapses?
- hover
- · Replies 10 ·
Undergrad Bohr model electron wavelengths
- copernicus1
- · Replies 4 ·
Graduate How Do Quantum Statistics Affect Energy Level Degeneracies in a SHO?
- Kontilera
- · Replies 1 ·
Graduate Angle Between Spins: Alpha & Beta | Why?
- matematikuvol
- · Replies 9 ·
Graduate Looking for suggestions for an experiment involving Quantum theory and Biology?
- nukeman
- · Replies 1 ·
Graduate Quantum Computer, how to actually build one?
- MathematicalPhysicist
- · Replies 2 ·