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.
Threads
Graduate Virtual Fermions and Pauli Principle
- Marrrrrrr
- · Replies 2 ·
High School How is Bohr's atom model convenient with quantum mechanics?
- Karagoz
- · Replies 3 ·
High School Conditions for paired electrons
- Konstantinos Michos
- · Replies 1 ·
Graduate Are newly created particles in scattering experiments on-shell asymptotic states?
- asimov42
- · Replies 47 ·
Undergrad Hamiltonian after transformation to interaction picture
- lutherblissett
- · Replies 2 ·
Undergrad Does QM allow for a photon to travel at 800,000 km/s?
- gamow99
- · Replies 8 ·
Undergrad Is Hawking Radiation unique? (And one more question)
- Tio Barnabe
- · Replies 3 ·
Graduate Can zero dimensional QFT be real?
- friend
- · Replies 9 ·
Undergrad Entanglement-questions photons
- itoero
- · Replies 1 ·
High School Exciting an H-Atom: Effects on Kinetic Energy
- rahaverhma
- · Replies 1 ·
Undergrad Quantum Tunneling Max Distance
- name123
- · Replies 29 ·
Undergrad Hilbert space in Everettian QM
- Posy McPostface
- · Replies 18 ·
High School Why did Max Planck assume discrete energy values?
- Mikeal
- · Replies 22 ·
Undergrad Why is Quantum Gravity theory still not "finished"?
- Tio Barnabe
- · Replies 44 ·
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 ·