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 "Observer Effect" referring to two different things?
- Gerinski
- · Replies 39 ·
Graduate Can entanglement swapping determine the absolute velocity of an object?
- Mal Cevalo
- · Replies 15 ·
High School Collision of photon and proton
- sanpokhrel
- · Replies 4 ·
Undergrad Double slits seen from the plane
- TMV
- · Replies 2 ·
High School So Quantum Fluctuations don't exist?
- Tio Barnabe
- · Replies 54 ·
High School Is the Momentum Explanation in Marcella's Paper Consensus Among Physicists?
- fanieh
- · Replies 26 ·
Undergrad Why expectation values show N±√N fluctuations
- Agrippa
- · Replies 12 ·
Graduate Interference in electron conductance through e.g. molecule?
- jarekduda
- · Replies 1 ·
Undergrad Why doesn't a measurement collapse act like a preparation?
- john t
- · Replies 8 ·
High School Energy absorbed by an electron
- sanpokhrel
- · Replies 9 ·
Undergrad Is there a simplified spin-orbit coupling equation?
- HAYAO
- · Replies 2 ·
Undergrad Is the Hamilton-Jacobi Formalism a Classical Analogue to Quantum Wave Functions?
- fanieh
- · Replies 62 ·
Undergrad How does total internal reflection occur in quantum mechanics?
- Pritamstar
- · Replies 3 ·
High School Particle pair creation probability
- calinvass
- · Replies 1 ·
Undergrad Why the velocity operator commutes with position (Dirac equation)
- zhouhao
- · Replies 1 ·
High School Avoiding unexpected observations
- sweet springs
- · Replies 1 ·
Undergrad Find a calculation of Schrödinger's cat experiment?
- Joe Cool
- · Replies 34 ·
Undergrad Can the PBR Theorem Prove the Reality of Quantum States?
- fanieh
- · Replies 91 ·
Undergrad How does quantum entanglement communication work?
- Frenemy90210
- · Replies 4 ·
Undergrad What's the physics description of "existence" ?
- Arman777
- · Replies 4 ·
High School Does Heisenberg's uncertainty principle imply no free will?
- ddjj77
- · Replies 54 ·
Undergrad Three-particle entanglement states and measurement outcomes
- bluecap
- · Replies 59 ·
Undergrad Is momentum variance quantized in a finite universe?
- asimov42
- · Replies 10 ·
Undergrad Why do waves need to match object size for interaction?
- Mr rabbit
- · Replies 9 ·
High School Gravitational radiation on transition?
- Tio Barnabe
- · Replies 6 ·
Undergrad Principle of superposition of states
- Alex Cros
- · Replies 14 ·
Undergrad Applying the Principle of Relativity to Quantum Mechanics
- S Steinhauer
- · Replies 16 ·
Undergrad Is all correlation related to quantum entanglement?
- friend
- · Replies 3 ·
Undergrad QM Incompleteness: Can We Predict Uncertainty?
- Johan0001
- · Replies 43 ·
High School Does QM state that Space is made of nothing?
- mpolo
- · Replies 30 ·
High School Question regarding Light by Light Scattering
- Curious13
- · Replies 3 ·
Undergrad Understanding Quantum Cascade Lasers
- Karl330
- · Replies 3 ·
High School Does QM implicitly define an aether?
- Nocturnals
- · Replies 23 ·
Graduate Charge conjugation in Peskin and Schroeder
- diegzumillo
- · Replies 4 ·
Undergrad Zero-point energy vs measured zero momentum in ground state
- asimov42
- · Replies 4 ·
Undergrad Energy operator and the Hamiltonian operator: Are they same?
- arpon
- · Replies 33 ·
Undergrad QFT in Euclidean or Minkowski Spacetime
- LarryS
- · Replies 23 ·
Undergrad Experiment: Spin Rotation Operator
- arpon
- · Replies 4 ·
High School What are the potential uses of time crystals?
- CuriousMark
- · Replies 1 ·
Undergrad Math of Spreading Wavefunction
- bluecap
- · Replies 7 ·
High School Photon detection in the EPR experiment
- kurt101
- · Replies 3 ·
High School Is a pure state a kind of mixed states?
- sweet springs
- · Replies 3 ·
High School Quantum communication satellite
- pranj5
- · Replies 13 ·
High School Does electron motion blur explain why it appears smeared out?
- efdee
- · Replies 2 ·
Undergrad Compatibility of Quantum Mechanics and Special Relativity
- Mal Cevalo
- · Replies 43 ·
Undergrad Quantum communication question
- Trollfaz
- · Replies 3 ·
High School What does a superposition of eigenstates represent physically?
- Karolus
- · Replies 8 ·
High School Matter/antimatter entanglement
- jerromyjon
- · Replies 20 ·
Undergrad Povm's and Von Neumann Meaurements
- bhobba
- · Replies 4 ·
Undergrad Klein-Gordon propagator derivation
- chingel
- · Replies 13 ·
Undergrad What if the Hamiltonian in Dirac's equation weren't linear in momentum?
- Tio Barnabe
- · Replies 4 ·
Graduate Can the wave function show turbulence?
- sgphysics
- · Replies 1 ·
Graduate Several ground state calculations at once
- hilbert2
- · Replies 2 ·
Undergrad Pauli Spin Operator Eigenvalues For Two Electron System
- xdrgnh
- · Replies 7 ·
Undergrad Mixed states vs pure states - physical POV
- SchroedingersLion
- · Replies 65 ·
Graduate What is the LSZ reduction formula and how does it relate to propagators?
- bengeof
- · Replies 1 ·
Graduate Why do fermionic fields use Grassmann numbers?
- bengeof
- · Replies 3 ·
Graduate Correlation properties of quasi-thermal light
- kvantarina
- · Replies 7 ·
Undergrad Understanding Hilbert Subspace for Two-Particle Entangled Systems
- bluecap
- · Replies 81 ·
High School Information transfer using entanglement?
- entropy1
- · Replies 31 ·
High School Why is quantum entanglement surprising if it conserves spin?
- Tio Barnabe
- · Replies 42 ·
Undergrad Conservation laws during particle decay?
- LarryS
- · Replies 3 ·
Undergrad Why is "consciousness causes collapse" unprovable or unfalsiable?
- Trollfaz
- · Replies 15 ·
Graduate Hubbard model diagonalization in 1D K-space for spinless Fermions
- Luqman Saleem
- · Replies 1 ·
Undergrad Von Neumann measurement scheme
- bluecap
- · Replies 2 ·
Undergrad Particles of matter as Bosons?
- bbbl67
- · Replies 17 ·
High School What is the physical interpretation of n-particle correlation function in QFT?
- bengeof
- · Replies 4 ·
Undergrad Relativistic Quantum Mechanics vs Quantum Field Theory
- Tio Barnabe
- · Replies 5 ·
Undergrad Why the Quantum Theories are flawed
- Mac01
- · Replies 6 ·
Graduate Enhancing Spontaneous emission in a vacuum standing wave
- SchroedingersLion
- · Replies 4 ·
Graduate Analytical evaluation of r^l integral
- squareroot
- · Replies 2 ·
Graduate Quantum Optics - transition from pure to mixed state
- SchroedingersLion
- · Replies 4 ·
Undergrad The box notation and Lagrangians in field theory
- aqualone
- · Replies 5 ·
High School Why don't electrons align the same way in a magnetic field?
- calinvass
- · Replies 4 ·
High School Is the electron a particle or field?
- Pedraam
- · Replies 8 ·
Undergrad Atom as a harmonic oscillator of radition
- PainterGuy
- · Replies 14 ·
High School Does this theorem “theoretically” falsify macrorealism?
- Daria K
- · Replies 3 ·
Undergrad Quantum entanglement information
- calinvass
- · Replies 43 ·
High School Physicists measure complementary properties using quantum cloning
- .Scott
- · Replies 7 ·
Undergrad What is the behavior of real magnets when passed through Stern-Gerlach gates?
- calinvass
- · Replies 11 ·
Undergrad Can quantum superpositions be observed
- Trollfaz
- · Replies 7 ·
High School Uncertainty of a Gaussian wavepacket
- Isaac0427
- · Replies 10 ·
High School Why does a the Wave Function collapse?
- mpolo
- · Replies 8 ·
Undergrad Derivation of the radial equation
- davidge
- · Replies 2 ·
High School How did Caltech's photon teleportation work?
- satyesu
- · Replies 2 ·
High School What are quantum states and quantum information?
- satyesu
- · Replies 1 ·
Undergrad Complex scalar field commutation relations
- TeethWhitener
- · Replies 16 ·
High School "probability of finding the electron" (teaching QM)
- Borek
- · Replies 24 ·
High School Is energy really probabilistic in quantum mechanics?
- cube137
- · Replies 5 ·
Undergrad Wave function of electrons and the double slit experiment
- rahaverhma
- · Replies 2 ·
High School Does an electron orbit in a plane from its own reference frame?
- Doomsday92
- · Replies 4 ·
Undergrad Schrodinger equation and Heisenberg equation of motion
- Josh1079
- · Replies 4 ·
Undergrad The nature of quantum interference
- Mentz114
- · Replies 4 ·
Undergrad Proposal for a peculiar double-slit experiment
- Pelion
- · Replies 11 ·
Undergrad The propagator and the Lagrangian
- redtree
- · Replies 7 ·
High School Can retrocausality explain the wave properties in the double slit experiment?
- Realgent
- · Replies 6 ·
Graduate Anomalous field dimension in the on-shell scheme
- aqualone
- · Replies 1 ·
Graduate Majorana Lagrangian and Majorana/Dirac matrices
- mbond
- · Replies 3 ·
High School What Happens to High-Energy Particles in Cosmic Rain?
- Suppaman
- · Replies 3 ·
High School "travel time" of appearing and disappearing?
- Suppaman
- · Replies 11 ·