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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Undergrad Why Does a Blackbody Emit Broadband Radiation from Monochromatic Light?
- fog37
- · Replies 23 ·
Undergrad What is the criteria for bound states
- ftr
- · Replies 7 ·
Undergrad What's the significance of HUP if Ψ collapses?
- Phys12
- · Replies 1 ·
Undergrad Two particles Dirac type equation question
- ftr
- · Replies 2 ·
High School Do Black Holes Destroy Information?
- TheQuestionGuy14
- · Replies 17 ·
Undergrad Photon Directionality: Do Opposite Photons Change Direction?
- intervoxel
- · Replies 4 ·
High School Is Max Born's probabilistic proposal artificial?
- slow
- · Replies 10 ·
Undergrad The weak force as an attractive force
- cmcraes
- · Replies 13 ·
Undergrad How good is this PBS video at explaining weak hyper-charge?
- cmcraes
- · Replies 1 ·
Undergrad What is the meaning of coherent states of mean photon number
- Nur Ziadah
- · Replies 1 ·
Undergrad What happens if B measures the x-axis spin in an entangled pair?
- jeremyfiennes
- · Replies 11 ·
Undergrad Quantum Zeno effect to influence a particle's movement
- Pierre Parent
- · Replies 15 ·
Undergrad How Does the Dirac Equation Utilize Component Functions in Its Derivation?
- exponent137
- · Replies 2 ·
Undergrad Tunneling through a finite potential barrier
- BearY
- · Replies 3 ·
Undergrad Is Braket Notation Causing Confusion in Quantum Mechanics?
- DuckAmuck
- · Replies 7 ·
High School Quick question about Bloch's sphere
- Joao
- · Replies 2 ·
Undergrad Why is radioactive decay so rare?
- cmcraes
- · Replies 1 ·
Undergrad History of the Universe and measured outcomes
- entropy1
- · Replies 12 ·
Graduate Vacuum in QFT: Fock space or effective potential?
- Krudak Krudak
- · Replies 1 ·
Undergrad SU(3) Generators & Physical Quantity Corresp.
- fresh_42
- · Replies 11 ·
Graduate Helium atom, variation method and virial theorem
- Aleolomorfo
- · Replies 1 ·
Undergrad Perturbative versus nonperturbative quantum mechanics
- Riotto
- · Replies 14 ·
Graduate How Does a Particle's Energy State Change in a Non-Uniform 2D Corridor?
- hilbert2
- · Replies 2 ·
Undergrad How to pick an operator onto which the wavefunction collapses
- fluidistic
- · Replies 5 ·
High School The setup of "2012 entanglement between photons that (....)"
- Joao
- · Replies 25 ·
Undergrad Help with Schoedinger´s equation when V(x)=0
- DaTario
- · Replies 9 ·
Undergrad Find the energy from the graph of the wave function
- HastiM
- · Replies 1 ·
Undergrad Determining the state from observation?
- pellman
- · Replies 11 ·
Undergrad Correlation setup between past and present
- entropy1
- · Replies 6 ·
High School Can we observe 2 electrons at the same time?
- DARKSYDE
- · Replies 22 ·
Undergrad Does the concept of infinite parallel universes justify absurdities?
- bland
- · Replies 4 ·
Undergrad What's the effect of E-field for an electron in a solid?
- howl
- · Replies 1 ·
High School Library of Babel quantum state
- Juanchotutata
- · Replies 4 ·
Graduate Cause and effect and quantum field theory
- arupel
- · Replies 3 ·
Graduate Discrete Models for Arguments and Continuous Variables in Quantum Mechanics
- Derek P
- · Replies 1 ·
Undergrad Spin Angular Momentum Dirac Equation
- Bob Dylan
- · Replies 4 ·
Undergrad What does this equation for a free particle mean?
- Rob Turrentine
- · Replies 20 ·
Undergrad Photon emission, power output (and black holes)
- asimov42
- · Replies 47 ·
Insights Interview with Mathematician and Physicist Arnold Neumaier - Comments
- A. Neumaier
- · Replies 38 ·
Graduate Semi Classical Explanation of Stimulated Emission
- Super Sujan
- · Replies 4 ·
Graduate Rigorous interacting effective QFT in d=4?
- Gedankenspiel
- · Replies 18 ·
Graduate Information of system vs system, apparatus and environment
- Danny Boy
- · Replies 1 ·
Undergrad Heisenberg and the wave-particle dualism
- parton
- · Replies 7 ·
Undergrad Ehrenfest Theorem: Enunciate & Implications for Classical/Quantum Mechanics
- mjda
- · Replies 2 ·
Undergrad Heisenberg Uncertainty vs Measurement Error
- Derek P
- · Replies 48 ·
Undergrad Is the Dirac free equation actually free
- ftr
- · Replies 13 ·
Graduate Equation in a paper about Dicke states
- Danny Boy
- · Replies 2 ·
Graduate What does this article mean? (The holographic principle and M-cosmology)
- Suekdccia
- · Replies 1 ·
Undergrad Two particle system, products and entanglement
- fog37
- · Replies 35 ·
Graduate Is irreducibility justified as a Wightman axiom?
- Peter Morgan
- · Replies 4 ·
Undergrad Epistemic view of the wave function leads to superluminal signal
- MichPod
- · Replies 41 ·
Undergrad Help with a partition function calculation
- hammer123
- · Replies 1 ·
Undergrad Help with partition function calculation
- hammer123
- · Replies 1 ·
Undergrad Does quantum physics predict all isotope decays
- bland
- · Replies 1 ·
Graduate Decoherence of measurement outcomes
- Johny Boy
- · Replies 2 ·
High School Subatomic particles and the observer
- Kenneth Boon Faker
- · Replies 32 ·
Undergrad Stefan-Bolzmann law in n-dimensions, what is wrong
- exponent137
- · Replies 1 ·
Undergrad Generalizing the Bell Inequality for Arbitrary Measurement Axes
- lowea001
- · Replies 1 ·
High School A view of the double-slit experiment
- Qhmu
- · Replies 58 ·
High School CDP: Non Classical Correlations at Spacelike Separation
- Point Conception
- · Replies 1 ·
Undergrad Qualitative plots of harmonic oscillator wave function
- eprparadox
- · Replies 3 ·
Undergrad Does measuring an atom collapse the wavefunction of its parts?
- friend
- · Replies 6 ·
High School Quantum entanglement and special relativity
- kochanskij
- · Replies 9 ·
High School The HUP in absence of observers
- Gerinski
- · Replies 4 ·
High School A couple of questions about photons and superposition..
- Karagoz
- · Replies 6 ·
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 Measurement Problems in Quantum Mechanics: Wave/Particle Duality
- 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 Proof of Kaku (8.18): Completing the Square and Using Spiegel's Result
- rocdoc
- · Replies 12 ·
High School Why 50% of entangled photons pass through the polarizer?
- Karagoz
- · Replies 8 ·
Graduate Anyone here study quantum mechanics for fun?
- Dusty912
- · Replies 25 ·
Undergrad What were Newton's thoughts on 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 QM Orthogonality: Separate & Independent Eigenvalues?
- 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 ·