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 Predicting a diffraction pattern without the limiting assumption
- cosgriffc
- · Replies 1 ·
Graduate Can PEAR results fit with the Everett interpretation of QM?
- hyperds
- · Replies 5 ·
Graduate Why can spherical-wave states be described by E, l and m quantum numbers?
- rbwang1225
- · Replies 1 ·
Graduate Length of a one-dimensional box with an electron inside
- HuntMBryan
- · Replies 2 ·
Graduate Why does quantum entanglement work?
- kakarot1905
- · Replies 6 ·
Undergrad Can someone explain CP violation simply?
- Kvm90
- · Replies 1 ·
Graduate I have a very limited knowledge of the quantum but I was wondering if
- aspiring_one
- · Replies 3 ·
Graduate Why does ψ̄ψ give a number while ψψ̄ gives a matrix for Dirac spinors?
- CGH
- · Replies 6 ·
Graduate Why does the quantum eraser only erase information 50% of the time?
- StevieTNZ
- · Replies 4 ·
Graduate IRC calculations in Quantum Chemistry
- brydustin
- · Replies 4 ·
High School Why do entangled particles show correlated changes when measured separately?
- akmafia001
- · Replies 3 ·
Graduate What Are the Origins of Entangled Particles?
- edguy99
- · Replies 2 ·
Graduate Explanation of uncertainty principle
- TheBlackNinja
- · Replies 9 ·
Graduate Can Traditional Collision Problems Be Solved Using Quantum Mechanics?
- jfy4
- · Replies 5 ·
Graduate Infinite gravity and time on the uncertainty principle
- vespera
- · Replies 2 ·
Graduate Can someone explain HUP with some mathematical rigor?
- SeventhSigma
- · Replies 22 ·
Graduate Can someone explain to me Locality in field theory?
- alemsalem
- · Replies 1 ·
Graduate Vile spinors in odd dimensions?
- vertices
- · Replies 1 ·
Graduate How do they measure the mass of the electron in units of MeV/c*c ?
- what_are_electrons
- · Replies 6 ·
Graduate Why are quantum fluctuations amplified when viewed on a smaller scale?
- Mukilab
- · Replies 5 ·
Graduate Problems about uncertainty principle
- athrun200
- · Replies 14 ·
Graduate Relationship between Imaginary Time Green's function and Average Occupancy
- a2009
- · Replies 3 ·
Undergrad Why is the cube of a unitary operator = identity matrix?
- km707
- · Replies 3 ·
Graduate Transition from bound states to continuous states
- giova7_89
- · Replies 4 ·
Graduate Why does angle of incidence equal reflection when source and detector distances differ?
- nhmllr
- · Replies 5 ·
Undergrad Double-Slit Experiment & Wave Interference
- StevieTNZ
- · Replies 7 ·
Graduate Why do photons produce electromagnetic waves and other particles don't?
- Varon
- · Replies 12 ·
Graduate Reversibility on Microscopic Level
- StevieTNZ
- · Replies 7 ·
Graduate Do photons pass through polarizers without interaction?
- cragar
- · Replies 3 ·
Graduate Difference between Hamiltonian operator and Total energy operator?
- annms
- · Replies 4 ·
Graduate Does quantum randomness reverse under time reversal?
- ejproducts
- · Replies 9 ·
Graduate Quantizable nature of the physical world
- Kherubin
- · Replies 11 ·
Graduate Hacking Quantum Unbreakable Randomness Scrambler
- Varon
- · Replies 4 ·
Graduate Classical Bell test by Hans de Vries
- cosmik debris
- · Replies 2 ·
Graduate Are discrete and continuous phenomena two sides of the same coin?
- Kherubin
- · Replies 5 ·
Graduate Relativistic E/p relations in the WKB Approximation
- FunkyDwarf
- · Replies 1 ·
Graduate Does spin change under Lorentz boosts?
- QuantumCosmo
- · Replies 2 ·
Graduate I don't get this Path Integral stuff
- nhmllr
- · Replies 10 ·
Graduate The logic of a physical system
- Fredrik
- · Replies 1 ·
Graduate Doubt regarding uncertainty principle
- jobsism
- · Replies 22 ·
Graduate Is the EPR Thought Experiment Misinterpreted in Contemporary Versions?
- Varon
- · Replies 1 ·
Graduate Does measuring one electron's spin instantly determine the other's in helium?
- cragar
- · Replies 12 ·
Graduate What parameters of SM can be changed gradually?
- Dmitry67
- · Replies 5 ·
Graduate Why does matrix mechanics work without the wave concept?
- Varon
- · Replies 7 ·
Graduate Do bubble chamber tracks violate the uncertainty principle?
- LAncienne
- · Replies 10 ·
High School What keeps the electron from falling into the nucleus?
- Tregg Smith
- · Replies 1 ·
Graduate Can light be frozen and what does frozen light look like?
- paul turbine
- · Replies 6 ·
Undergrad Does a Hidden Detector Affect the Double-Slit Experiment?
- PositiveGoo
- · Replies 21 ·
Graduate Can Time Travel Really Avoid Violating Causality?
- byron178
- · Replies 61 ·
Graduate Fermi's golden rule with discrete and continuous spectrum
- giova7_89
- · Replies 3 ·
Graduate Electron-hole overlap integral for a quantum well
- skyboarder2
- · Replies 1 ·
Graduate Why some functional integral(in QTF theo)of a product equal product of two the integr
- ndung200790
- · Replies 2 ·
Graduate Hermitian Operators: Finding Psi(p) from Psi(x)
- khemist
- · Replies 5 ·
Graduate What really is a Wave Function?
- Varon
- · Replies 5 ·
Graduate Time-Dependent Perturbations in Schrodinger Equation
- Gear300
- · Replies 11 ·
Graduate Explanation of double slit experiment.
- jcsubmit
- · Replies 2 ·
Graduate How can a single photon exist as a wave of possibility before measurement?
- Planck1900
- · Replies 11 ·
Graduate Why does |s=1,m=1> equal |++> ?
- Ethan0718
- · Replies 3 ·
Graduate Is a Reverse Quantum Computer Possible?
- ChrisWilson68
- · Replies 6 ·
Undergrad Finding Wavevector in 2D Domain
- Crot
- · Replies 2 ·
Graduate Can macro quantum entanglement make teleportation possible? i had a
- ASD16
- · Replies 7 ·
Graduate What causes deviations between Sun and blackbody?
- Sybren
- · Replies 7 ·
Graduate Right handed or left handed,intrinsic?
- ShayanJ
- · Replies 10 ·
Undergrad Types of scattering techniques and their applications
- no86
- · Replies 2 ·
Graduate Wave functions and probability densities
- jaredogden
- · Replies 4 ·
Graduate Polarizations of vector/tensor fields
- michael879
- · Replies 1 ·
Graduate Experimental Test Limits Predictive Power Beyond Quantum Theory
- DrChinese
- · Replies 11 ·
Graduate What is the meaning of classical and quantum equations?
- ndung200790
- · Replies 9 ·
Graduate Position doesn't exist prior to measurement?
- Varon
- · Replies 6 ·
Graduate Fine structure, exact formula. Dirac.
- andrewr
- · Replies 11 ·
Graduate Experiments on macroscopic quantum coherence and macrorealism
- StevieTNZ
- · Replies 14 ·
Graduate Are More Complicated Lagrangians Wrong ?
- maverick_starstrider
- · Replies 24 ·
Undergrad Why don't quantum effects work at large scales?
- Pjpic
- · Replies 5 ·
Graduate What is the secret behind the double slit experiment and how has it been solved?
- Varon
- · Replies 8 ·
Graduate Oscillation time in wave function?
- Varon
- · Replies 2 ·
Graduate Quantum Physics United with non quantum Physics
- evanallmighty
- · Replies 3 ·
Graduate Do we need a coincidence counter (for correlation) in delayed erasure?
- San K
- · Replies 44 ·
Graduate Covariant Uncertaintly Principle
- jfy4
- · Replies 13 ·
Graduate Ground state eigenvalue of x^4 potential lower than x^2
- dingo_d
- · Replies 10 ·
Undergrad Is Superposition Similar to Tossing a Coin?
- ƒ(x)
- · Replies 4 ·
Graduate What exists in quantum mechanics when we don’t observe?
- computerphys
- · Replies 7 ·
Graduate Laser light interference on liquid metal. why?
- bizzder
- · Replies 4 ·
Graduate Wave Length of Photon: How Many Wavelengths Does It Contain?
- ValenceE
- · Replies 1 ·
Graduate Does quantum tunnelling allow faster-than-light propagation?
- Dmitry67
- · Replies 6 ·
Graduate Elementary particles,0-Dimensional?
- ShayanJ
- · Replies 12 ·
Graduate Can Bell inequalities be reconciled with local determinism?
- Fyzix
- · Replies 6 ·
Graduate Understanding Interference in Quantum Ray States
- Varon
- · Replies 14 ·
Graduate Dynamics in a Quantum Superposition
- Varon
- · Replies 1 ·
Graduate When we want to show quantum behavior (like tunneling or double slit)
- Lapidus
- · Replies 3 ·
Graduate Questions on a revised Afshar Experiment
- StevieTNZ
- · Replies 2 ·
Graduate Newbie Q on quantum entanglement
- ObbtiGime
- · Replies 20 ·
Undergrad What is a single particle state?
- quietrain
- · Replies 8 ·
Graduate Position expectation value in harmonic oscillator
- Trajito
- · Replies 10 ·
Graduate Sum over histories, including histories that violate conservation laws?
- bcrowell
- · Replies 16 ·
Graduate QFT vs. Relativistic quantum mechanics
- Schreiberdk
- · Replies 23 ·
Graduate Why does measuring A collapse into a simultaneous eigenstate of B?
- elemental09
- · Replies 9 ·
Graduate Why can't gravity be renormalized?
- ASD16
- · Replies 2 ·
Graduate Why don't electrons lose mass when radiating electromagnetic energy?
- Nano-Passion
- · Replies 9 ·
Graduate Solving Indices Problem in QFT
- anony
- · Replies 2 ·
Graduate How Does the Hartree Model Account for the Pauli Exclusion Principle?
- Auwings2006
- · Replies 5 ·