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 Born rule for macroscopic objects
- durant35
- · Replies 1 ·
Undergrad Quantum Physicists Examine Orch Theory and Consciousness
- Pyrus
- · Replies 7 ·
Undergrad On uniqueness of density matrix description as mixed state
- stevendaryl
- · Replies 5 ·
Undergrad Underlying reality re deBroglie equation
- Cobalt101
- · Replies 6 ·
High School Matrix exponential and applying it a random state
- td21
- · Replies 1 ·
Graduate Does increasing photon flux density increase attenuation?
- texasnano
- · Replies 8 ·
Graduate Change of coordinates in quantum phase space
- dft5
- · Replies 1 ·
Undergrad Explanation of the EPR paradox
- arupel
- · Replies 18 ·
High School Does the Higgs field gravitate?
- newjerseyrunner
- · Replies 2 ·
Undergrad Psi-epistemic arguments against reality of quantum states
- msumm21
- · Replies 5 ·
Graduate What are L+ and L- matrices for l=3 ?
- niloun
- · Replies 1 ·
High School QM: Quantization Dependent on Spatial Confinement?
- fog37
- · Replies 3 ·
Undergrad Solving Schrodinger's equation
- LSMOG
- · Replies 8 ·
High School Guessing trial wave function with variational method
- physicist 12345
- · Replies 5 ·
Undergrad Srednicki KG equation: why exclude negative energy solutions with step function
- TeethWhitener
- · Replies 9 ·
Undergrad What can this observable represent?
- OhNoYaDidn't
- · Replies 2 ·
Undergrad How Can Two Simultaneous Measurements Be Compared in Single Photon Entanglement?
- akvadrako
- · Replies 18 ·
Undergrad Why can't atoms accept energy from static electric fields?
- Electric to be
- · Replies 10 ·
Graduate Problem with Bose-Einstein Condensation
- ShayanJ
- · Replies 2 ·
Undergrad Trying to understand how spontaneous emission works
- Groucho
- · Replies 9 ·
High School Why are there only two colorful metals?
- Buffu
- · Replies 24 ·
High School Trajectory of photon or electron in double slit
- learis
- · Replies 6 ·
High School Can the electron g-factor be calculated from the golden ratio?
- HawkI
- · Replies 2 ·
Undergrad Is it possible to send information with entanglement?
- newjerseyrunner
- · Replies 6 ·
High School When was the first double slit experiment done using a detector?
- aceleratio
- · Replies 4 ·
High School Does "wave–particle duality" exist in low frequency waves?
- Dante Meira
- · Replies 5 ·
Graduate Is There a Possibility of Quantum Events Creating Cats?
- clarkvangilder
- · Replies 41 ·
Undergrad Do these relations have any physical significance
- ftr
- · Replies 9 ·
Undergrad Delayed choice quantum eraser with actual 'choice'?
- greypilgrim
- · Replies 2 ·
High School Does mass increase with velocity in different reference frames?
- Ganoash
- · Replies 7 ·
Undergrad Electron Degeneracy Pressure not Fundamental?
- FallenApple
- · Replies 3 ·
High School Did Einstein and Bohr disagree on whether reality requires observation?
- ChrisisC
- · Replies 6 ·
High School How much could quantum computers improve on conventional computers?
- ChrisisC
- · Replies 8 ·
High School Maths used in Quantum physics, specifically particle physics
- ChrisisC
- · Replies 3 ·
Undergrad Boltzmann brains and other low probability events
- durant35
- · Replies 35 ·
High School Double slit experiment for layman
- wolram
- · Replies 2 ·
Undergrad Ratio between spontaneous/stimulated emission
- greypilgrim
- · Replies 1 ·
Graduate Large scale Quantum computing developments
- 1oldman2
- · Replies 8 ·
Graduate A need for an exactly solvable model
- Demystifier
- · Replies 25 ·
Undergrad Mandel quantum eraser: No signal/idler-correlations needed?
- greypilgrim
- · Replies 3 ·
High School Why do Dirac equation solutions have spin even at zero momentum?
- DiracPool
- · Replies 6 ·
High School How does beta disintegration work?
- adolphysics
- · Replies 1 ·
Undergrad Why does the Coulomb potential give discrete energy eigenvalues in quantum mechanics?
- jonjacson
- · Replies 20 ·
Undergrad Is there any way to get a geometrical description of QM
- nashed
- · Replies 12 ·
Undergrad Why don't vacuum fluctuations cause Anderson-like localization?
- asimov42
- · Replies 22 ·
Undergrad Why do quarks prefer to live on top of fluctuating gluon fields?
- FallenApple
- · Replies 6 ·
High School Is Energy Truly Quantized in De Broglie's Equation?
- _PJ_
- · Replies 1 ·
Undergrad How important is light in the Observer Effect?
- Dennis Z
- · Replies 3 ·
Graduate Quantum states and representation freedom
- fog37
- · Replies 31 ·
Undergrad If an object is not quantized does it have a wave function?
- Nickyv2423
- · Replies 12 ·
Undergrad How Does Shankar's PQM Derive Schrödinger's Equation?
- hideelo
- · Replies 1 ·
Graduate How does the magnetic field B appear when rewriting the Dirac equation?
- TimeRip496
- · Replies 4 ·
Undergrad The nature of wavefunctions collapse
- Jilang
- · Replies 10 ·
Undergrad Can individual observables become entangled while others remain separate?
- fog37
- · Replies 1 ·
Graduate How do you visualize quantum spin?
- Scott99
- · Replies 1 ·
Graduate Variation in Schwinger's quantum action principle
- Neutrinos02
- · Replies 1 ·
Undergrad The Arrow of Time and the Reversibility of Decay Processes in Physics
- Abdullah Qasmi
- · Replies 45 ·
High School Is the wave function collapse asymmetrical in time?
- IvicaPhysics
- · Replies 2 ·
High School Boundary between Quantum and Relativity
- rharrex
- · Replies 3 ·
Undergrad Criss-cross multiple double slit experiment paths?
- pittsburghjoe
- · Replies 4 ·
Graduate Ground state wave function from Euclidean path integral
- ShayanJ
- · Replies 12 ·
Undergrad Why Use Different Components for E>0 and E<0 in Dirac Equation?
- TimeRip496
- · Replies 1 ·
High School Understanding Fourier Transform for Wavefunction Representation in K Space
- Physgeek64
- · Replies 4 ·
Undergrad State Representation in QM and Vector Spaces
- fog37
- · Replies 4 ·
Undergrad Lorentz invariance of quantum theory
- Narasoma
- · Replies 2 ·
High School SMBC comic about the Heisenberg uncertainty principle
- collinsmark
- · Replies 20 ·
High School What is the UV catastrophe and how does it challenge classical physics?
- Asmaa Mohammad
- · Replies 2 ·
Undergrad I can determine the photon path in delayed erasure
- djorkaef
- · Replies 3 ·
Undergrad Information isolation limits many-worlds branching in quantum systems
- .Scott
- · Replies 2 ·
High School Measuring entangled electrons on different spin axes
- rede96
- · Replies 18 ·
Undergrad Why does inserting a complete set give an extra delta function term?
- jim burns
- · Replies 15 ·
High School Double slit and DCQE with future prediction
- TJung
- · Replies 13 ·
High School What are some easy ways to show quantum mechanics
- malcome123
- · Replies 26 ·
High School The Chinese have proposed teleportation of a bacteria
- Nicky665
- · Replies 5 ·
High School Why is Quantum Physics so Strange?
- ChrisisC
- · Replies 39 ·
Undergrad Why doesn't macroscopic superposition occur like quantum superposition?
- garrettwittag
- · Replies 20 ·
Undergrad Energy associated with entangled particles
- MCB
- · Replies 2 ·
Undergrad Is Energy Entanglement Possible?
- LarryS
- · Replies 31 ·
Undergrad Most Ridiculous Papers You've Ever Read
- Nosebgr
- · Replies 3 ·
High School Why is P²/2m the kinetic energy operator in the Hamiltonian?
- kidsasd987
- · Replies 4 ·
Undergrad Finding electron spin probabilities in a two-electron system
- voila
- · Replies 12 ·
Undergrad Why is the Pauli Exclusion Principle not a force?
- dsanz
- · Replies 101 ·
Undergrad Why do different Lagrangians related by a total derivative give different quantum systems?
- klpskp
- · Replies 10 ·
High School Bose Condensate: The Repulsive Nature and Inability to Penetrate Ceramic
- fanieh
- · Replies 3 ·
Undergrad One Way vs. Entangled Cryptography
- Zafa Pi
- · Replies 5 ·
Undergrad Commutator Properties: [A,B]C+B[A,C]=[A,B](C+B)?
- Kyle Nemeth
- · Replies 2 ·
Undergrad Peres-Horodecki criterion for a 3-qubit system
- MMS
- · Replies 2 ·
Undergrad Proving The Church-Turing-Deutsch Principle
- n01
- · Replies 39 ·
Graduate Why doesn't electron self-energy diverge if photons can be absorbed by other electrons?
- feld
- · Replies 3 ·
High School Build a "full" wave function without data in simple problems
- DoobleD
- · Replies 7 ·
Insights Interview with physicist David J. Griffiths
- Greg Bernhardt
- · Replies 15 ·
High School Is the Heisenberg Uncertainty Principle Equivalent to One Bit of Information?
- Nicky665
- · Replies 5 ·
Undergrad Does the electron field carry information about its charge
- ftr
- · Replies 3 ·
Undergrad Physical significance of nodes?
- Sheldon Cooper
- · Replies 4 ·
Undergrad Will the kinetic energy operator change with a variable shift?
- Konte
- · Replies 3 ·
Graduate How to calculate the Wigner function for an entangled state
- khfrekek92
- · Replies 4 ·
Undergrad How are quantum bits implememted?
- JohnsonJohnson
- · Replies 1 ·
Undergrad Why do we need perturbation theory
- LSMOG
- · Replies 2 ·
Undergrad Qubits: Can We Store Information Again After Read?
- bzt
- · Replies 4 ·
Undergrad Double slit experiment with electrons
- Davephaelon
- · Replies 3 ·