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 KT where k is Boltzmann constant times the absolute temperature.what
- phyky
- · Replies 2 ·
Graduate What is Flavor Physics and How Does it Relate to QCD Theory in QFT?
- ndung200790
- · Replies 1 ·
Graduate Understanding Time-Independent Schrodinger Equation
- saravanan13
- · Replies 1 ·
Graduate How do we know quantum measurements are random?
- McLaren Rulez
- · Replies 8 ·
Graduate Could elementary particles be quasi-particles?
- johne1618
- · Replies 1 ·
Graduate Can electrons knock other electrons out of atoms?
- Himal kharel
- · Replies 6 ·
Graduate Understanding Spectral Scattering of Nanomaterials
- erogard
- · Replies 1 ·
Graduate Double-Slit Detector: How Physicists Detect Particles
- chris2112
- · Replies 3 ·
Graduate How do electrons couple to gauge field?
- a dull boy
- · Replies 36 ·
Graduate How Do Spin and Photon Interactions Affect Electron Excited States?
- Gavroy
- · Replies 1 ·
Graduate Few questions on Dirac's Principles of QM.
- DiracRules
- · Replies 2 ·
Graduate How are room temperature photons produced?
- McStevenF
- · Replies 7 ·
Graduate Schrodinger equation significance
- geft
- · Replies 8 ·
Graduate Can one identify the vacuum state of a photon?
- phonon44145
- · Replies 10 ·
High School Can you see a light ray by shining another light at it?
- menniandscience
- · Replies 13 ·
Graduate QFT: Understanding Creation & Destruction Operators
- Hymne
- · Replies 19 ·
Undergrad Vibration of Photons: Do Photons Oscillate?
- GarryS
- · Replies 3 ·
Graduate Is Hidden Symmetry Broken In Linear and Nonlinear Sigma Model?
- ndung200790
- · Replies 2 ·
Graduate Do Minute Black Holes Appear and Disappear in Empty Space?
- GarryS
- · Replies 1 ·
Graduate Do we have Any idea why the uncertainty principle occurs?
- cdux
- · Replies 8 ·
Graduate Energy as rate-of-phase-change
- jjustinn
- · Replies 1 ·
Graduate Could a high electric field pull particles out of the vacuum?
- johne1618
- · Replies 7 ·
Undergrad Understanding Probability and Particle Behavior in Double-Slit Experiments
- StevieTNZ
- · Replies 3 ·
Graduate Time evolution operator - Confusion
- Kalidor
- · Replies 2 ·
Graduate Question on Uncertainty Principle
- cdux
- · Replies 6 ·
Graduate Commutators on a discrete QM lattice = ?
- cheeseits
- · Replies 1 ·
Graduate Born rule derived from pure QM by Max Tegmark
- Dmitry67
- · Replies 21 ·
Graduate Why does frequency, not intensity, determine the photoelectric effect?
- jaumzaum
- · Replies 17 ·
Graduate Splitting photons are entangled?
- ice909
- · Replies 5 ·
Graduate Conjugate of amplitude with imag. # in exponent and out of exponent?
- platonic
- · Replies 1 ·
Graduate What is the origin of infrared divergence?
- ndung200790
- · Replies 2 ·
Graduate The Illusion of Free Will in the Context of Time Travel and Paradoxes
- boffinwannabe
- · Replies 122 ·
Graduate Do you have to use a Beta-barium borate crystal in order to entangle photons?
- ice909
- · Replies 2 ·
Graduate Why Do Some Books Only Consider Zero Mass Limit for Renormalization Group?
- ndung200790
- · Replies 2 ·
Graduate What is the meaning of quantum in quantum mechanics?
- c299792458
- · Replies 4 ·
Graduate Why we call ''nonlinear'' sigma model?
- ndung200790
- · Replies 1 ·
Graduate Why helicity, not energy and momentum, as photon degrees of freedom
- Lapidus
- · Replies 3 ·
Undergrad Is this a reasonable analogy for quantum tunnelling?
- Turtle492
- · Replies 6 ·
Graduate Layman's question on Quantum decoherence
- cdux
- · Replies 8 ·
Undergrad Need an Exact Explanation of the Double Slit Experiment
- OniLink++
- · Replies 12 ·
Graduate Problem about scattering amptitude
- knightq
- · Replies 1 ·
Graduate Can a wavefunction change from normalizable to non-normalizable over time?
- McLaren Rulez
- · Replies 23 ·
Graduate Why doesn't the Pauli Exclusion Principle apply to all fermions in the universe?
- henryc09
- · Replies 2 ·
Graduate Confusion (7) from Weinberg's QFT.(Why is there a vacuum field)
- kof9595995
- · Replies 9 ·
Graduate Alternative histories and photon
- peterpang1994
- · Replies 2 ·
Undergrad Uncertainty Propagation Argument
- azaharak
- · Replies 4 ·
Graduate Quantum states and complex numbers - newbie question
- carmatic
- · Replies 1 ·
Graduate Is superluminal communication possible?
- bryanvann
- · Replies 5 ·
Graduate Dispersion relation and group velocity
- Cygni
- · Replies 3 ·
Graduate Black Body Radiation: Classical Equipartition vs Boltzmann Distribution
- tut_einstein
- · Replies 1 ·
Undergrad Measurement of (brightness of) double slit experiment
- Lino
- · Replies 5 ·
Graduate When and how does entanglement end?
- mcdnlt
- · Replies 1 ·
Graduate How Does Quantum Scattering Theory Connect to Electromagnetic Waves?
- ANTMW1361
- · Replies 2 ·
Undergrad Motion of a photoelectron
- Himal kharel
- · Replies 11 ·
Graduate I need an explanation behind this calculation
- Demon117
- · Replies 2 ·
Graduate Eigenvectors of the Hamiltonian
- Ajihood
- · Replies 2 ·
Graduate Can macroscopic objects interfere with themselves like quantum particles?
- mrspeedybob
- · Replies 4 ·
Graduate Wave nature of electron, interference and standing waves
- fusun
- · Replies 6 ·
Graduate What does quantum mechanical mean?
- Ken G
- · Replies 21 ·
Graduate What causes wavefunction collapse?
- SeventhSigma
- · Replies 33 ·
Graduate Could Consciousness Alter Early Physics after the Big Bang?
- dEdt
- · Replies 6 ·
Graduate Entanglement between the Future and the Past in the Quantum Vacuum
- limarodessa
- · Replies 1 ·
Graduate How Does the Pauli Exclusion Principle Influence Orbital Stability in Atoms?
- JDude13
- · Replies 4 ·
Undergrad Can an atom be anywhere in space?
- clisp
- · Replies 5 ·
Graduate Is action at a distance possible as envisaged by the EPR Paradox.
- Deepak Kapur
- · Replies 2K ·
Graduate Wavefunction Collapse: Measuring Electron Spin
- dEdt
- · Replies 8 ·
Graduate Degenerate Perturbation Theory Wavefunction Correction
- McLaren Rulez
- · Replies 2 ·
Graduate Propagator counterterm in phi^4
- fliptomato
- · Replies 4 ·
Graduate Encoding photons with data through a double slit experiment
- Joseph Fiero
- · Replies 4 ·
Graduate Pauli matrices forming a basis for 2x2 operators
- McLaren Rulez
- · Replies 2 ·
Graduate How does an electron's effect propagate through space and time?
- Runner 1
- · Replies 6 ·
Graduate How to derive a numerator relation in vertex correction in Peskin p191
- Comanche
- · Replies 1 ·
Undergrad Can Electrons Absorb Photons With Different Energy Levels?
- MHD93
- · Replies 2 ·
Graduate Calculating Zero Point Energy with DVR
- camus
- · Replies 1 ·
Graduate Is V_{eff} truly the density of effective action in QFT?
- ndung200790
- · Replies 1 ·
Graduate Macroscopic entanglement: 1x10^12 atoms over 0.5m for an hour
- Uglybb
- · Replies 4 ·
Graduate Do photons experience time differently than massive particles?
- Ninjacocoa
- · Replies 2 ·
Graduate Why [f*(x),f(y)]=0 for spacelike intervals but <0|f*(x)f(y)|0>≠0
- LearningDG
- · Replies 1 ·
Graduate What is the Operator Product Expansion in Interacting Field Theory?
- gullio
- · Replies 3 ·
Graduate Dimensional Regularisation - Contracting/Commuting Gamma Matrices
- Daschm
- · Replies 3 ·
Graduate Understanding Fock Spaces: Explanation and Examples
- SeventhSigma
- · Replies 3 ·
Graduate Cant understand similar proof Quantum numbers from PDE (pdf attachment)
- mohsin031211
- · Replies 1 ·
Graduate Does particle at rest behave as wave?
- cltaylor23
- · Replies 13 ·
Graduate Why do we only average and sum over two independent polarizations in scattering?
- knightq
- · Replies 1 ·
Graduate Zero momentum distribution and consequences on uncertainty principle
- hoju
- · Replies 6 ·
Graduate Quantum Particle Momentum Measurement: Theoretical and Practical Considerations
- BWV
- · Replies 7 ·
Graduate H|0> = 0? Does that mean that zero-point is ZERO?
- LostConjugate
- · Replies 7 ·
Graduate Double slit experiment & time (action at a distance?)
- earlofwessex
- · Replies 17 ·
Graduate How Does Electron Spin Orbit Influence Ferromagnetic Transformer Functionality?
- dr strangelov
- · Replies 4 ·
Graduate Schrodinger Equation for a Bra Vector
- nateHI
- · Replies 3 ·
Undergrad How does a photon gain momentum?
- Lorentz Trans
- · Replies 1 ·
Graduate Does a modulated electromagnetic wave contain photons of different energy?
- sriecewit
- · Replies 11 ·
Graduate Why do non-interacting particles transform under Lorentz in Weinberg QFT I?
- SeySchW
- · Replies 6 ·
Graduate Is there molecular friction and movement in balanced loads at the quantum level?
- peetey
- · Replies 1 ·
Graduate Is quantum mechanics fundamental theory?
- scottbekerham
- · Replies 17 ·
Graduate Creation/Ann operators acting on <x|p>
- LostConjugate
- · Replies 3 ·
Graduate Is the Quantization of Time a Real Possibility?
- conner.ubert
- · Replies 11 ·
Graduate Electromagnetic Potential as an Observable
- jfy4
- · Replies 2 ·
Graduate Question on the representation of Poincare algebra generators on fields
- alexgs
- · Replies 15 ·
Graduate Quantum coherence and neutrino detection
- exponent137
- · Replies 19 ·