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.
Sub-forums
Threads
Graduate A question on wave-particle duality
- rock.freak667
- · Replies 2 ·
Graduate What are the properties of a Hermitian Hamiltonian operator?
- Bunting
- · Replies 12 ·
Graduate Resolving the Uncertainty Principle: The Puzzle of Measuring Photon Momentum
- fermi
- · Replies 8 ·
Graduate Question on UV and IR divergences
- mhill
- · Replies 1 ·
Graduate Quantum myth 2. time-energy uncertainty
- pellman
- · Replies 12 ·
Graduate Has the electrostrong force been accepted like the electroweak force?
- Usaf Moji
- · Replies 2 ·
Undergrad Planck energy and frequency in E=hf
- meemoe_uk
- · Replies 16 ·
Graduate Why are there no spin-1/2 particles with three identical quarks?
- lark
- · Replies 3 ·
Graduate Is pauli exclusion principle a force
- Dropout
- · Replies 5 ·
Graduate Heisenberg Uncertainty Principle and Gaussian Distributions
- RogerPink
- · Replies 41 ·
Graduate Dirac Delta Function question(s)
- Crazy Tosser
- · Replies 26 ·
Graduate Quantum myth 1. wave-particle duality
- pellman
- · Replies 95 ·
Graduate Is quantum theory really necessary?
- DaveLush
- · Replies 66 ·
High School Posterboard project combining chemistry and quantum physics
- Crazy Tosser
- · Replies 3 ·
Graduate Why Do Vacuum Energy Calculations Vary Between d^3k and d^4k Integrals?
- robousy
- · Replies 10 ·
Graduate Heisenberg Undertainty Principle
- cutekawaii
- · Replies 3 ·
Graduate Photons - the smallest building block?
- Raap
- · Replies 7 ·
High School Conducting the Double Slit Experiment
- AzonicZeniths
- · Replies 6 ·
Graduate Wave equation - vector notation
- lehel
- · Replies 2 ·
Undergrad Photoelectric Emission: Why Does Number of Electrons Decrease?
- ay2k
- · Replies 8 ·
Graduate Wavefunction of relativistic free particle
- I_wonder
- · Replies 7 ·
Graduate Many body problem -> non-interacting particles
- JustinLevy
- · Replies 4 ·
Graduate About the origen of the fundamental theories
- mmzaj
- · Replies 6 ·
Undergrad What Determines the Frequency and Wavelength of Electromagnetic Radiation?
- Shukie
- · Replies 14 ·
Undergrad Understanding Quantum Energy Levels in Bohr's Model of the Atom
- newguy1234
- · Replies 6 ·
Graduate Speed Quanta: Is There a Lower Limit?
- Physonic
- · Replies 4 ·
Graduate Quantum physics documentaries and lecture videos
- thesecularist
- · Replies 5 ·
Undergrad Antiparticle and particle annihilation
- bassplayer142
- · Replies 1 ·
Graduate Where do fermion properties come from?
- jostpuur
- · Replies 4 ·
Graduate Pressure of an electron gas at 0K
- nvs9
- · Replies 6 ·
Undergrad Questions on Neutrinos: How Do We Know?
- Ms Music
- · Replies 3 ·
Undergrad Sign error in quantum mechanics exercise answer
- lark
- · Replies 2 ·
Graduate How can virtual particles exist if they cannot be observed?
- Bose
- · Replies 5 ·
Graduate Proof that (p + ix) operator is non-hermitian (easy)
- halfoflessthan5
- · Replies 3 ·
Graduate Calculate something with QFT - I dare you
- pellman
- · Replies 11 ·
Graduate Solving Hamiltonian with chain of charge centers?
- Gerenuk
- · Replies 1 ·
Graduate Momentum operator in Schrodinger equation
- Bose
- · Replies 5 ·
Graduate Dimensionality and vectors in quantum mechanics
- chris_183
- · Replies 1 ·
Graduate Does the Beer-Lambert Law Apply Differently in Active Environments?
- Physicsissuef
- · Replies 4 ·
Undergrad Lasers, photo-electric effects and ionization of atoms
- Nerd
- · Replies 12 ·
Graduate How important is experience in QM?
- reilly
- · Replies 1 ·
Graduate Solving schrodingers numerically
- Nigel_baxter
- · Replies 2 ·
Graduate Is Time Travel the Key to Understanding Dirac's Equation and Positron Creation?
- Bose
- · Replies 2 ·
Graduate Computational steps from Lagrangian to observables in QFT
- kdv
- · Replies 9 ·
Graduate Uncertainty principle and photon
- spidey
- · Replies 4 ·
Graduate Renormalizability - how to determine if a theory is renormalizable?
- mhill
- · Replies 3 ·
Graduate Understanding Double Slit Interference in Electron Diffraction
- Noj Werdna
- · Replies 40 ·
Graduate Creation/annihilation operators
- jdstokes
- · Replies 16 ·
Undergrad Atomic Radius Increase Up Periodic Table: Why?
- nuby
- · Replies 1 ·
Graduate The difference between BOSONS and FERMIONS
- abdullahbameh
- · Replies 3 ·
Graduate Evaluate the Klein-Gordon action
- auditor
- · Replies 1 ·
Graduate Preferred basis and prereduction of density matrices
- comote
- · Replies 6 ·
Graduate Discrete spacetime means discrete momentum ?
- mhill
- · Replies 1 ·
Undergrad Significace of i*sin(wt) in SHM [cos(wt)+i*sin(wt)]
- phlegmy
- · Replies 6 ·
Graduate If p=E/c, why can't we measure momentum accurately?
- spidey
- · Replies 2 ·
Undergrad Why does increasing frequency decrease photoelectric current?
- Hevonen
- · Replies 25 ·
Graduate The necessity of time-dependence in making approximations of the H2+ molecule
- IHateMayonnaise
- · Replies 2 ·
Graduate Heisenberg Uncertainty Principle to estimate the position uncertainty
- tinsleyjamaal
- · Replies 11 ·
Graduate What is the particle pair phenomenon and how does quantum entanglement work?
- macd
- · Replies 2 ·
Graduate What frequency is meant when describing atomic oscillations?
- Donn P
- · Replies 5 ·
Graduate Klein-Gordon equation for electro-magnetic field?
- Lojzek
- · Replies 27 ·
Graduate Uncertainty principle and vacuum fluctuations
- spidey
- · Replies 4 ·
Graduate Density matrices and Hilbert spaces in quantum ensembles
- jdstokes
- · Replies 2 ·
Graduate Is Electron Spin Just a Mathematical Concept?
- Dahaka14
- · Replies 11 ·
Graduate Why is Schrodinger's Cat only a thought experiment?
- DaveC426913
- · Replies 55 ·
Graduate Time evolution and the Dirac Equation
- arunma
- · Replies 3 ·
Graduate Plane waves not physical states?
- jdstokes
- · Replies 4 ·
Graduate Why forces are modeled as virtual particles in quantum mechanics?
- aachenmann
- · Replies 1 ·
Graduate Understanding Plane Wave Solutions in Quantum Mechanics
- siresmith
- · Replies 19 ·
Graduate Backward causation intepretation
- michael879
- · Replies 1 ·
Graduate Representation of j=1 rotation matrix
- jdstokes
- · Replies 4 ·
Graduate How to Find the Ground State of a System of Identical Bosons?
- noospace
- · Replies 4 ·
Graduate Photovoltaic and Superconductivity
- MIC
- · Replies 6 ·
Undergrad Calculating Photon Energy Needed to Exceed Fused Silica Glass Band Gap
- vachan
- · Replies 1 ·
Graduate Interactions that cause entanglement
- RabitHolRules
- · Replies 12 ·
Graduate Understanding Local Gauge Symmetry
- alphachapmtl
- · Replies 3 ·
Graduate What if Cramer's FTL Experiment Worked?
- peter0302
- · Replies 2 ·
Graduate Is Time Elapsed During Photon Absorption a Quantum Illusion?
- tmoan
- · Replies 5 ·
Graduate I've just finished reading Einstein's Biography by Walter Isaacson.
- scoobydoo
- · Replies 6 ·
Graduate Is teleportation just advanced cloning?
- KCL
- · Replies 5 ·
Graduate Is Scientific Publishing Fair in the Context of Hawking's Manuscript?
- spidey
- · Replies 8 ·
Graduate Momentum-space detection of an Electron (EWP)
- logic smogic
- · Replies 1 ·
Graduate Virtual Particles: How They Work
- asimov42
- · Replies 5 ·
Graduate Quantum Mechanics for the 'lay person'
- bockerse
- · Replies 14 ·
Graduate Uncertainty Principle and Single-Slit Diffraction
- peter0302
- · Replies 10 ·
Graduate Variation on Dopfer Experiment - Why Won't This Work?
- peter0302
- · Replies 9 ·
Graduate Quantum Non-Locality Subspace Radio
- admiral_butts
- · Replies 2 ·
Graduate Unification 'theory' (small energy)
- usnpilot2012
- · Replies 1 ·
Graduate Do Commuting Observables in Quantum Physics Share Common Eigenfunctions?
- IHateMayonnaise
- · Replies 3 ·
Graduate Photons - Wavelength and Wavepackets
- Usaf Moji
- · Replies 1 ·
Graduate Entanglement Explained with Epistomological Probability Theory
- peter0302
- · Replies 23 ·
Graduate Quantum Field Theory online book, 885pages
- malawi_glenn
- · Replies 1 ·
Graduate Questions on Electron Orbitals, Wave Packets, and Coherent States
- logic smogic
- · Replies 7 ·
Graduate Nine formulations of Quantum Mechanics
- CarlB
- · Replies 2 ·
Graduate What is the Role of Magnetic Fields in Allowing Electron Transitions?
- dachikid
- · Replies 2 ·
Graduate Operator Rotation: Expressing in New Reference Frame
- jdstokes
- · Replies 3 ·
Graduate How do bilinear covariants relate to the Dirac equation's broader implications?
- jdstokes
- · Replies 1 ·
Graduate Do vacuum fluctuations produce only photon pairs or electron-positron pairs too?
- spidey
- · Replies 8 ·
Graduate Calculating Base State for the H Atom using Inverse Fourier Transform
- Gatts
- · Replies 3 ·
Graduate Is Annihilation Really Just Positronium Ground State?
- michael879
- · Replies 2 ·