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
High School What is the minimum voltage required to get characteristic spectrum
- Samar A
- · Replies 2 ·
High School Electron Gun for a Grade 9 Physics Project?
- Jake2003
- · Replies 3 ·
Undergrad Electrons Emitting Photons And Ambient Light
- D English
- · Replies 7 ·
High School Is quantum physics "retro-deterministic"?
- Gerinski
- · Replies 14 ·
Undergrad Is the Born Rule Justifiable in Particle Detection?
- Jilang
- · Replies 26 ·
High School Can a Particle Near a Black Hole Eliminate String Vibration?
- James0123
- · Replies 2 ·
High School Semiconductor's sensistivity to light
- Somali_Physicist
- · Replies 3 ·
Undergrad Are measurement collapse and wave-particle duality the same problem?
- Rob Field
- · Replies 12 ·
Graduate Is Mutation related to quantum jump?
- tze liu
- · Replies 4 ·
Undergrad Ring or the shell in Bremsstrahlung?
- tze liu
- · Replies 4 ·
Undergrad Proving Kaku equation 8.18 by completing the square
- rocdoc
- · Replies 12 ·
High School Why 50% of entangled photons pass through the polarizer?
- Karagoz
- · Replies 8 ·
Graduate Studying quantum mechanics outside of professional fields
- Dusty912
- · Replies 25 ·
Undergrad Where did Newton express his misgivings about non-locality?
- Derek P
- · Replies 51 ·
High School What is the underlying reason for stimulated emission?
- physics loverq
- · Replies 4 ·
Graduate How is the von Klitzing constant used to measure resistance?
- Harisk
- · Replies 2 ·
High School What does the 'space' inside an atom consist of?
- Kenneth Boon Faker
- · Replies 23 ·
Undergrad Probabilities Associated with Sudden Changes in Potential
- CDL
- · Replies 1 ·
Undergrad Do these Bell inequalities rely on probability concept?
- zonde
- · Replies 13 ·
Undergrad How the probability amplitude is estimated in practice
- microsansfil
- · Replies 4 ·
Graduate How to relate the expansion term to Feynman diagrams
- chern
- · Replies 1 ·
Undergrad Superposition of particle identities
- bsaucer
- · Replies 8 ·
High School Single photons and expanding spheres of light
- Zebulin
- · Replies 20 ·
Undergrad Path Integrals in Quantum Theory
- rocdoc
- · Replies 3 ·
Undergrad What basically is Klein tunneling ?
- phywithAK
- · Replies 3 ·
High School Does Observing an Entangled Particle Affect Its Superposition?
- Allen_Wolf
- · Replies 8 ·
Undergrad Measurement of the mean value of the number of photons?
- Pattarasak
- · Replies 9 ·
Undergrad When Should the Bohr Atom Behave Classically?
- Sahar ali
- · Replies 3 ·
High School Exactly why FTLC is impossible with entangled photons?
- Karagoz
- · Replies 40 ·
Graduate Why Do Feynman Rules Successfully Model Particle Interactions?
- MathematicalPhysicist
- · Replies 1 ·
Undergrad A computational model of Bell correlations
- PAllen
- · Replies 76 ·
Undergrad Orthogonality vs eigenvalue separation in quantum mechanics
- LarryS
- · Replies 9 ·
Undergrad Symmetric and Antisymmetric Wavefunction
- fog37
- · Replies 11 ·
Graduate Stochastic signal analysis in QM
- Peter Morgan
- · Replies 7 ·
Undergrad Baryon asymmetry of the universe
- Kajagoogooooooo
- · Replies 15 ·
Graduate Randomness of quantum mechanics and Pi
- kolleamm
- · Replies 10 ·
Graduate Nonlinear Schrodinger equation and linearity of Q.M.
- Buddha_the_Scientist
- · Replies 3 ·
High School Probability of a photon passing through a filter
- Karagoz
- · Replies 5 ·
Undergrad What is the device used to observe electrons passing through slits?
- Hussein Tofaili
- · Replies 2 ·
Graduate What are the real-world benefits of quantum computers and how do they work?
- ISamson
- · Replies 33 ·
Undergrad How do photons transfer energy to electrons in photoelectric and Compton effects?
- Sandeep T S
- · Replies 30 ·
Undergrad Measurement effect ('collapse') question
- kw1
- · Replies 8 ·
Graduate On tempered distributions and wavefunctions
- dumpling
- · Replies 5 ·
Graduate Coulomb Klein Gordon: Where does e^(-iEt) come from?
- xhwvnsghsfasd
- · Replies 1 ·
Undergrad Can Photons from Distant Quasars Decay into Particle Pairs in Vacuum?
- intervoxel
- · Replies 2 ·
Undergrad Building intuition for Quantum Mechanics
- RubinLicht
- · Replies 2 ·
Graduate Bohr's complementarity is completed with entanglement?
- jfizzix
- · Replies 22 ·
Undergrad What is the origin of quantization?
- Choi
- · Replies 2 ·
Graduate Generalized free fields as dark matter?
- Peter Morgan
- · Replies 4 ·
Undergrad I want to read about the electron nucleus interaction
- gnnmartin
- · Replies 4 ·
Undergrad In quantum statistics, inhibition/enhancement factors
- Dubz
- · Replies 2 ·
Undergrad How a group of nucleus can act as a circular aperture
- Alvan
- · Replies 1 ·
High School Why do scientists claim that there's true randomness?
- Karagoz
- · Replies 7 ·
Undergrad "Derivation" of the Schrödinger Equation
- BearY
- · Replies 4 ·
Undergrad Interference of a single photon in an interferometer
- weezy
- · Replies 26 ·
Graduate Division by zero when applying the inverse momentum operator
- hilbert2
- · Replies 12 ·
Undergrad Definition of "info" as it pertains to string theory
- CessnaTexan
- · Replies 1 ·
Undergrad The inequality in the Heisenberg uncertainty relation
- Derek P
- · Replies 6 ·
Undergrad Infinite or undefined standard deviation in HUP
- nomadreid
- · Replies 6 ·
High School Looking for a quantum mechanics expert to interview for a research paper
- Adam Kohnle
- · Replies 1 ·
Graduate Particle moving on a constrained path
- hilbert2
- · Replies 1 ·
Undergrad Determining the accuracy of the Variational Method
- joel31
- · Replies 1 ·
High School Relation between spin and symmetry of wave function
- Jigyasa
- · Replies 1 ·
Undergrad State Vectors vs. Wavefunctions
- AspiringResearcher
- · Replies 32 ·
Undergrad Require a source for a delocated photon pair
- Derek P
- · Replies 2 ·
Undergrad Quantum Field Configurations and Wavefunctions
- rocdoc
- · Replies 4 ·
Undergrad Work Out Number of Photons in Vacuum
- Bruce Haawkins
- · Replies 8 ·
Undergrad How does the thickness of a beam splitter affect the phase shift produced?
- confused_man
- · Replies 4 ·
High School Understanding Causality in Quantum Mechanics
- mohamed amine
- · Replies 8 ·
Undergrad Why is there an arrow mediating a process in a Feynman diagram?
- Phys12
- · Replies 8 ·
Undergrad Normalization and the probability amplitude
- redtree
- · Replies 5 ·
Undergrad Use the Dirac Equation to calculate transition frequencies in Hydrogen
- neilparker62
- · Replies 13 ·
Undergrad What is the Electromagnetic Wave in this Animation?
- marksyncm
- · Replies 6 ·
High School Can two teams measure position and momentum simultaneously?
- Thomas Gajdek
- · Replies 3 ·
Graduate Successive iteration problem in quantum dissipation article
- moso
- · Replies 19 ·
Undergrad Why is the 6th spectral series neglected and where does it fall in the EM spectrum?
- Sahar ali
- · Replies 11 ·
High School How do the group and phase velocities of pilot waves compare?
- Azurite
- · Replies 17 ·
Undergrad Representations in Quantum Physics
- fresh_42
- · Replies 15 ·
Graduate Quantum field theory, spacetime, and coordinates
- Demystifier
- · Replies 60 ·
Undergrad Why “If Lz has a well-defined value, then Lx and Ly do not”？
- hilily
- · Replies 6 ·
High School Planck level effects of virtual particles
- DGator86
- · Replies 17 ·
Undergrad Domino Valdano's percentages explaining quantum entanglement
- X53
- · Replies 14 ·
Undergrad Can matter come into existence in empty space?
- Neil Condon
- · Replies 5 ·
Undergrad Why does Weinberg set p' = p on RHS but not LHS in equation 2.5.14?
- kent davidge
- · Replies 6 ·
Undergrad In entanglement, are all properties correlated or just the measured one?
- iamcj
- · Replies 23 ·
Graduate Field quantization and photon number operator
- Peter Morgan
- · Replies 6 ·
Undergrad A proposed experiment to test quantum gravity
- mfb
- · Replies 12 ·
Undergrad Why Is the Planck Scale a Limit in Cosmological Constant Calculations?
- exponent137
- · Replies 10 ·
Graduate Electron-Hole- or Many-Electron Exchange Interaction
- Nabla94
- · Replies 2 ·
Undergrad Does the Schrödinger equation link position and momentum?
- AuxPart
- · Replies 3 ·
Undergrad How Do Indices Determine Positions in a Quantum Density Matrix?
- doggydan42
- · Replies 5 ·
High School How do we know we have a single-photon source?
- Johan0001
- · Replies 11 ·
High School Does Thermal Radiation from Ordinary Materials Span All Wavelengths?
- titansarus
- · Replies 1 ·
Undergrad Looking for a few questions on "foundations of quantum physics" for Adam Becker
- Greg Bernhardt
- · Replies 24 ·
High School Black hole emits quantum particles from the mass sucked in?
- diPoleMoment
- · Replies 3 ·
Undergrad Understanding black body radiation
- Sophrosyne
- · Replies 4 ·
Undergrad Why don't we ever hear about low-frequency photons?
- Rob Lewis
- · Replies 12 ·
Undergrad Some (unrelated) questions about the measurement problem
- haushofer
- · Replies 89 ·
Undergrad Simplify the Dirac Energy Equation?
- neilparker62
- · Replies 2 ·
Undergrad Double-Slit Interference w/ Separate Sources
- Adiater
- · Replies 12 ·