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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High School Distances of electrons in the shell
- dansphere
- · Replies 2 ·
Graduate Question about what the bleep do we know and superposition of a particle.
- Bluesky
- · Replies 3 ·
Graduate Understanding Single Particle Interference in Quantum Physics
- Smiley10
- · Replies 86 ·
Graduate What happens in the middle of a Feynmann Diagram?
- satisverborum20
- · Replies 12 ·
Graduate Probability Distribution Function, H-atom
- logic smogic
- · Replies 3 ·
Graduate History of Physics: Why is it Important?
- reilly
- · Replies 3 ·
Graduate Probability of Measuring Two-State System in State |2>
- logic smogic
- · Replies 9 ·
Undergrad Why does hydrogen emit discrete wavelengths but a bulb emits continuous spectrum?
- touqra
- · Replies 17 ·
Graduate How Does Quantum Mechanics Combine Particle and Wave Descriptions?
- flowerew
- · Replies 128 ·
Graduate Is Complex Scaling in Quantum Mechanics Fully Understood?
- Quantum River
- · Replies 1 ·
Graduate Can HUP Explain the Instant Emission of Photoelectrons?
- lightarrow
- · Replies 10 ·
Graduate Why can atoms absorb arbitrary photon energies if energy levels are quantized?
- wgreen
- · Replies 4 ·
Graduate When is the time-independent Schrödinger equation valid?
- stunner5000pt
- · Replies 17 ·
Graduate Calculating Variational Integral W(c) for STO-1G H-Atom
- scarecrow
- · Replies 20 ·
Graduate Is the Hydrogenic Rydberg atom just a proton with an ionized electron at n=100?
- Quantum River
- · Replies 23 ·
Graduate Multiple solutions to Schrödinger equation and tunneling in QM
- ever.monk
- · Replies 11 ·
Graduate Why is the potential zero inside an infinite square well?
- swain1
- · Replies 5 ·
Graduate How Can Quantum Physics Enhance Pain Management Techniques?
- DrFoster
- · Replies 3 ·
Graduate Calculating Irreducible Tensor Operators in a Given Basis
- msamp
- · Replies 1 ·
Graduate Zero Hamiltonian and its energies
- Karlisbad
- · Replies 40 ·
Graduate A scattering of light particles from a heavy stationary particles,.
- touqra
- · Replies 2 ·
Graduate Why Does Double Slit Experiment Support Wave Nature of Light?
- user01
- · Replies 16 ·
Graduate Is the K-G Operator of the Kelin-Gordon Equation a Time Ordered Function?
- Karlisbad
- · Replies 4 ·
Graduate Basic questions about QM computations
- gulsen
- · Replies 1 ·
Graduate What happens if an atom is completely stopped?
- slipxaway
- · Replies 14 ·
Graduate Of quarks and international borders
- MisterTrilby
- · Replies 9 ·
Graduate Standard Compton Effect Explained Classically/Semiclassically
- lightarrow
- · Replies 8 ·
Graduate Boundary Conditions and Hilbert Space
- Manchot
- · Replies 9 ·
Graduate Afshar Wikipedia entry incl. views of Unruh and Lubos Motl
- Hans de Vries
- · Replies 16 ·
High School Are atoms perfect spheres?
- resurgance2001
- · Replies 11 ·
Graduate Why is the time-independent Schrödinger equation useful?
- Aero
- · Replies 19 ·
High School Transparent vs Opaque: Why are Some Objects Different?
- blumfeld0
- · Replies 1 ·
Graduate Is the QM axiom for measurements misleading?
- lalbatros
- · Replies 37 ·
Graduate Heisenberg uncertainty principle: ℏ vs ℏ/2 and standard deviation vs rms
- ovoleg
- · Replies 8 ·
Graduate Understanding Spin States and Density of States in Atom Systems
- Beer-monster
- · Replies 2 ·
Graduate Euler-Lagrange Equations for Schördinger Eq.
- gulsen
- · Replies 12 ·
Graduate Why can't gravity be added as a potential to Dirac's equation?
- actionintegral
- · Replies 13 ·
Graduate What the term virtual particles referred to
- actionintegral
- · Replies 30 ·
Graduate How Quickly Does a Particle's Wave Function Re-Emerge After Observation?
- Lelan Thara
- · Replies 17 ·
Graduate Schrodinger equation in the spherical coordinates
- Quantum River
- · Replies 3 ·
Graduate Why should wave function be continuous?
- quanjia
- · Replies 7 ·
High School Why does reflected light leave a smooth surface at the same angle as incident light?
- ValenceE
- · Replies 1 ·
Graduate Rotating a Perfectly Smooth Cylinder
- Bmmarsh
- · Replies 3 ·
Graduate Is free electron's motion quantized?
- sneez
- · Replies 4 ·
Graduate Particle seen in two different places simultaneously
- resurgance2001
- · Replies 13 ·
Graduate Understanding Time-Dependent Perturbation Theory's 2nd Order Term
- actionintegral
- · Replies 1 ·
Graduate Why does Shankar put linearity in the second component of the inner product?
- SeReNiTy
- · Replies 5 ·
Graduate What is the Physical Interpretation of the Lagrangian in Quantum Field Theory?
- octol
- · Replies 7 ·
Graduate Prove T Not Conserved When [H,T] = 0
- benfrombelow
- · Replies 7 ·
Graduate What does the Dirac bra-ket notation | > mean?
- Lee
- · Replies 4 ·
Undergrad Expectation values and mean square deviations
- Ed Quanta
- · Replies 6 ·
Graduate Learning QM and the math required.
- ChemGuy
- · Replies 24 ·
Undergrad Hydrogen Atom Emission and Absorption
- kingyof2thejring
- · Replies 2 ·
Graduate Flaw in Anton Zeilinger QM entanglement article
- RandallB
- · Replies 7 ·
Undergrad Are protons magnets like electrons with spin and charge?
- davidong3000
- · Replies 10 ·
Graduate Is there a good book for beginners in quantum optics and photon statistics?
- Baggio
- · Replies 5 ·
Graduate What are the incompatibilities between GR and QM?
- Karlisbad
- · Replies 1 ·
Graduate Superpositioning of electrons in magnets
- davidong3000
- · Replies 6 ·
Graduate What Are the Implications of the Free Will Theorem?
- Demystifier
- · Replies 2 ·
Graduate Quantum computers in the next 50 years?
- Lee
- · Replies 18 ·
Graduate Understanding QFT Notation: Delta Function and Statistical View
- alfredblase
- · Replies 3 ·
Graduate Heisenberg UP and space homogeneity - an intuitive reasoning
- lightarrow
- · Replies 6 ·
Undergrad Analogy between total internal reflection and quantum tunneling
- actionintegral
- · Replies 1 ·
Graduate Did Einstein's contributions lead to quantum mechanics?
- Swapnil
- · Replies 35 ·
Graduate Can Schwinger-Dyson Equations Compute Green Functions in Quantum Gravity?
- Karlisbad
- · Replies 1 ·
Graduate Does a quantum possess structure or geometry?
- Loren Booda
- · Replies 6 ·
Graduate Few questions on uncertainty principle
- AlbertEinstein
- · Replies 9 ·
Graduate Negative kinetic energy in tunneling
- gulsen
- · Replies 5 ·
Graduate Does a functional equation govern the Feynman path integral?
- Karlisbad
- · Replies 3 ·
Graduate Is there a Formula for Determining States of 3d^4 Configuration?
- scarecrow
- · Replies 3 ·
Graduate What is a photon in quantum field theory?
- lightarrow
- · Replies 19 ·
Graduate What's the Best Introductory Book on Quantum Field Theory?
- bartosz1982
- · Replies 4 ·
Graduate Can photons and electrons have the same physical size?
- pej.dgr
- · Replies 33 ·
Graduate Quantum Energies of GR: Applying Bohr-Sommerfeld
- Karlisbad
- · Replies 2 ·
Graduate Are Stars Closer Than We Think?
- Z03
- · Replies 4 ·
Graduate A diatomic molecule rotating about it's axis of symetry
- quasar987
- · Replies 5 ·
Graduate What are Stephen Hawking's Theories?
- The_ArtofScience
- · Replies 4 ·
Graduate Can wave functions of identical particles have arbitrary phase factors under exchange?
- Euclid
- · Replies 45 ·
Graduate What Does the Atomic Model Look Like After the Quantum Revolution?
- pibomb
- · Replies 2 ·
Graduate Planck's constant on a time-energy wave chart
- davidong3000
- · Replies 6 ·
Graduate Does quantum mechanics encompass QCD and QED?
- Swapnil
- · Replies 1 ·
Graduate Can an atom have more than one unpaired electron?
- quasar987
- · Replies 5 ·
Graduate Remark on electric charge Lorentz invariance
- dextercioby
- · Replies 1 ·
Graduate Proving Wave-Particle Duality in Proton Twin Slit Experiment?
- ianbell
- · Replies 3 ·
Graduate QED Feynman (coupling number called j)
- eb227
- · Replies 1 ·
Graduate Can We Define the Size of an Electron Theoretically or Experimentally?
- lightarrow
- · Replies 24 ·
Graduate Electron indeterminism Problem
- pibomb
- · Replies 42 ·
Graduate Which is stronger? eletrical or magnetic fields?
- davidong3000
- · Replies 5 ·
Graduate Can the semiclassical propagator be defined using a Hamilton-Jacobi equation?
- Karlisbad
- · Replies 2 ·
Graduate Recovering SE from Path integral
- Karlisbad
- · Replies 5 ·
Graduate Uncertainty Principle and Wave Particle Duality
- Swapnil
- · Replies 16 ·
Graduate Can Hawking radiation violate the no-signaling principle?
- Flatland
- · Replies 2 ·
Graduate A few questions about the Bohr model
- Pseudo Statistic
- · Replies 4 ·
Graduate What manufactures wave packets to create our universe?
- wolram
- · Replies 1 ·
Graduate Remeasurement of a quantum system
- swain1
- · Replies 3 ·
Graduate The Potential Well In Quantum Mechanics
- Yonderboy98
- · Replies 5 ·
Graduate Relativistic particle in a box
- actionintegral
- · Replies 7 ·
Undergrad EM Spectrum Continuous or Discrete?
- davidong3000
- · Replies 7 ·
Graduate Can positrons create a time-traveling chain reaction in vacuum?
- ocalhoun
- · Replies 3 ·
Graduate Definition of the dressed propagator
- hellfire
- · Replies 2 ·