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.
Sub-forums
Threads
Undergrad Amplitudes, Probabilities and EPR
- stevendaryl
- · Replies 81 ·
Undergrad Deriving Bell's inequality from correlations at different angles
- exponent137
- · Replies 10 ·
Undergrad On the Heisenberg uncertainty relation
- A. Neumaier
- · Replies 49 ·
Undergrad How Do You Calculate the Average Orbital Kinetic Energy for Silicon?
- Ado
- · Replies 5 ·
Undergrad How Does Semiclassical State Counting Relate to Quantum Energy Eigenstates?
- jostpuur
- · Replies 2 ·
Undergrad Gravitational Effect on Electron Eigenstates
- Jim Lundquist
- · Replies 5 ·
Undergrad Odd/even symmetric/antisymmetric
- dyn
- · Replies 1 ·
High School Practical applications of quantum mechanics
- Jazzy Smaff
- · Replies 3 ·
Undergrad Expectation of an operator (observable) how to calculate it
- fog37
- · Replies 11 ·
High School Neutron, White Dwarfs and Degeneracy Pressure
- Jimmy87
- · Replies 1 ·
Undergrad From Pauli spinors to Dirac spinors
- Milsomonk
- · Replies 8 ·
Undergrad Quantum Computing: Learn to Start From Scratch
- Dahvrok
- · Replies 1 ·
Graduate Do all photons really follow all available paths?
- physics pfan
- · Replies 4 ·
High School How close are we to uniting gravity and QM
- ChrisisC
- · Replies 2 ·
Undergrad Questions regarding Hawking radiation
- Buzz Bloom
- · Replies 31 ·
Undergrad What 'Collapses' the Wavefunction of the Universe?
- Ghost117
- · Replies 20 ·
Undergrad Calculating Subsystem B Probability in a Two-System Setup
- nashed
- · Replies 6 ·
Undergrad Examples where mixed states are eigenstates
- oquen
- · Replies 7 ·
Undergrad How Do Symmetry Properties Affect Boltzmann Distributions for Bosonic Particles?
- jostpuur
- · Replies 4 ·
Undergrad The Wavefunction and eigenstates
- Higgsono
- · Replies 13 ·
Undergrad Why isn't tunnelling considered proof of hidden variables?
- scifimath
- · Replies 20 ·
High School Possible Recoherence After Wave Function Collapse?
- oquen
- · Replies 12 ·
Undergrad GRE related question in Quantum
- Silviu
- · Replies 1 ·
High School Has anyone tested a polarization filter sending through photon by photon?
- calinvass
- · Replies 6 ·
Undergrad Equations of motion from Born-Infeld Lagrangian
- OhNoYaDidn't
- · Replies 4 ·
High School Subsystem has no wave function
- mieral
- · Replies 13 ·
Undergrad What bosons mediate the electroweak force above symmetry breaking?
- Lucifuge Rofocale
- · Replies 6 ·
High School Marble Ball as a Subsystem in Quantum Decoherence
- oquen
- · Replies 2 ·
Graduate Photon number needless conservation, consolidation possible?
- kiwaho
- · Replies 5 ·
Undergrad Superfluidic Quantum Computer?
- cuallito
- · Replies 1 ·
Undergrad Spectrum energy of a particle moving on a circumference
- Lola1
- · Replies 5 ·
High School How to make the wave collapse in double-slit experiment
- Tareq Naushad
- · Replies 22 ·
Undergrad Is Observable A Invariant Under Symmetry Generators G_i?
- Kara386
- · Replies 5 ·
Undergrad Stern-Gerlach experiment questions
- Pet Scan
- · Replies 14 ·
Undergrad What is the physical interpretation of eigenstates in quantum mechanics?
- Gianmarco
- · Replies 5 ·
Undergrad Difference between Scattering and Emission of Photons
- JohnnyGui
- · Replies 25 ·
High School How far apart can entangled particles be?
- megacal
- · Replies 42 ·
Undergrad Quantum tunneling in symmetry breaking
- Ranku
- · Replies 5 ·
Undergrad Is entanglement severed by wave function collapse?
- FreeThinking
- · Replies 4 ·
Undergrad Can Photons Be Accelerated by Altering Their Path?
- Mridul Tripathi
- · Replies 6 ·
High School Untangled Photon - Commonplace or Fictional?
- ObjectivelyRational
- · Replies 1 ·
Undergrad Entanglement spin swaps are instantaneous?
- scifimath
- · Replies 10 ·
Undergrad Lagrangian for electromagnetic field derivation
- TimeRip496
- · Replies 3 ·
Undergrad Delayed choice quantum eraser with entangled photons
- yadda
- · Replies 12 ·
Undergrad Can a UV cutoff in vacuum energy preserve Lorentz invariance?
- asimov42
- · Replies 39 ·
High School Starting a quantum mechanics book without the double slit experiment
- mieral
- · Replies 6 ·
Undergrad Applying Euler-Lagrange to (real) Klein-Gordon Lagrangian
- joebentley10
- · Replies 3 ·
Undergrad Maximum practical size of a BEC
- Davephaelon
- · Replies 5 ·
Undergrad On Wave Function Collapse and Accuracy of Energy Measurment
- Electric to be
- · Replies 18 ·
Undergrad Early Quantum Entanglement Experiments basic question?
- Sid2100
- · Replies 11 ·
Undergrad Virtual ensembles vs ordinary statistical ensembles
- A. Neumaier
- · Replies 1 ·
Graduate Vacuum birefringence QFT treatment
- Mordred
- · Replies 1 ·
Graduate Can squeezed light propagate in open space and improve quantum sensing?
- sanman
- · Replies 4 ·
Undergrad A contradiction in quantum mechanics
- Killtech
- · Replies 2 ·
Undergrad Path integral implies superluminal motion?
- substitute materials
- · Replies 16 ·
Undergrad Photon-Photon Coupling (Gamma-Gamma)
- sanman
- · Replies 1 ·
High School Weak nuclear force - circumstances in which it is manifested
- arlesterc
- · Replies 3 ·
Undergrad Are Eigenstates of operators always stationary states?
- fog37
- · Replies 17 ·
Undergrad Distinguishing classical physics vs. quantum physics
- Zafa Pi
- · Replies 115 ·
Undergrad Symmetric, self-adjoint operators and the spectral theorem
- Neutrinos02
- · Replies 5 ·
Undergrad Experiments with two independent particles interfering
- Killtech
- · Replies 12 ·
High School Any good lay explanation of the Schrödinger cat duality?
- Nick Levinson
- · Replies 54 ·
Undergrad Does the electron have charge?
- ftr
- · Replies 42 ·
Undergrad Two-qubit systems and their superposition states
- fog37
- · Replies 18 ·
High School Distinguish Contextual ,Non Local,Non Realistic (Non CFD)
- Point Conception
- · Replies 2 ·
Undergrad Problem with CHSH's version of Bell's inequalities
- facenian
- · Replies 50 ·
Undergrad Classicality in Bell's original reasoning
- A. Neumaier
- · Replies 105 ·
Undergrad NMR: RF-pulse response away from equilibrium
- Nogniks
- · Replies 3 ·
High School Physicists study the quantum vacuum
- wolram
- · Replies 5 ·
Graduate Bell's theorem+Holographic entanglement entropy
- itoero
- · Replies 12 ·
Undergrad Is a Qubit in a Quantum Superposition or a Mixed State?
- Trixie Mattel
- · Replies 2 ·
Undergrad Difference between Quantum Superposition and Mixed States
- Trixie Mattel
- · Replies 1 ·
High School Understanding Light as a Wave: Clarifying Misunderstandings in Modern Physics
- _PJ_
- · Replies 4 ·
Undergrad Short Distance Quantum Physics
- clarkvangilder
- · Replies 3 ·
Undergrad Does observed light travel faster or slower than unobserved?
- scifimath
- · Replies 3 ·
High School Does Cutting an Object Affect Its Hilbert Space or Quantum State?
- oquen
- · Replies 2 ·
Undergrad Quantum Superposition, Linear Combinations and Basis
- gfghfhghfghfgh
- · Replies 1 ·
Graduate Quantum Field theory profound insight antiparticles
- binbagsss
- · Replies 6 ·
Graduate Expanding CCRs, and their underlying meaning
- golanor
- · Replies 5 ·
High School Can Anti-Atoms Produce an Optical Spectrum? New Study Shows Promising Results
- houlahound
- · Replies 1 ·
Undergrad Jaynes on probability in quantum theory
- A. Neumaier
- · Replies 7 ·
High School How Does the Quantum Vacuum Influence Matter and Fundamental Interactions?
- oquen
- · Replies 1 ·
Undergrad Open or closed Casimir system?
- gildomar
- · Replies 10 ·
Undergrad Calculating Modes in a Cavity: Why Use a Spherical Volume?
- Conservation
- · Replies 1 ·
Undergrad Use of polarization to experimentally check photon mass?
- Bolhuso
- · Replies 1 ·
Undergrad Ben Schumacher - Q. Mech. lectures from 2008. Outdated?
- QuantumMechanics
- · Replies 5 ·
Undergrad How would Lorentz violation affect the vacuum's appearance?
- asimov42
- · Replies 12 ·
Undergrad Intrinsic or non-intrinsic properties
- friend
- · Replies 7 ·
Undergrad Quantum wavepackets expanding in free space
- fog37
- · Replies 1 ·
High School Can particles of different types be entangled together?
- rpthomps
- · Replies 6 ·
Undergrad Total angular momentum for antiparallel electrons
- goodphy
- · Replies 22 ·
Undergrad Finding resources and problem sets for Sturm-Liouville equations
- Mordred
- · Replies 2 ·
Undergrad Understanding Quantum Corral images
- fog37
- · Replies 2 ·
Undergrad Does energy poverty impose structure in quantum systems?
- jamie.j1989
- · Replies 8 ·
High School Does information travel faster than light
- wolram
- · Replies 1 ·
Undergrad Rotation operators on a sphere, around x and y axis
- Emily111
- · Replies 2 ·
High School Single-source and multi-source interference
- stevendaryl
- · Replies 7 ·
Undergrad Common eigenfuctions for degeneracy
- goodphy
- · Replies 11 ·
Undergrad Is quantum particle reflection from a mirror a Lorentz boost?
- Pet Scan
- · Replies 1 ·
High School Has the double slit experiment been done in space?
- Gmoneylucky
- · Replies 40 ·