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
High School Funneling Light to an Electron: A Size Challenge
- gmalcolm77
- · Replies 1 ·
Undergrad What is the speed of decoherence and its predictions for coherent systems?
- Binax011
- · Replies 8 ·
Undergrad Do I have the correct form for the number of states, the |n>?
- rocdoc
- · Replies 14 ·
Undergrad About general solutions to Schrodinger equation
- betelgeuse91
- · Replies 13 ·
Undergrad Is Light a Particle or a Wave in Different Contexts?
- qnach
- · Replies 4 ·
High School Rest Energy - Kinetic Energy
- orangepeelsnice
- · Replies 3 ·
Undergrad Extending an infinitesimal operator
- davidge
- · Replies 4 ·
Graduate Is the electron a fundamental particle?
- Ostrados
- · Replies 3 ·
Undergrad What is the Wave Function and How Does it Compare to the Schrodinger Equation?
- Xilus
- · Replies 3 ·
Undergrad Is the Planck Length the Ultimate Limit of Measurement?
- nomadreid
- · Replies 5 ·
Undergrad Why does the Dirac equation act on a 4-component spinor?
- Milsomonk
- · Replies 2 ·
Undergrad Does the Uncertainty Principle restrict a particle's path?
- mike1000
- · Replies 29 ·
Undergrad Built an HBT Interferometer but don't get the physics
- Mellowed
- · Replies 1 ·
Undergrad Which ψ do I use for the Expectation Value ?
- SpaceNerdz
- · Replies 3 ·
Undergrad How to synthesize quantum circuits?
- nashed
- · Replies 1 ·
Undergrad Density matrix on a diagonal by blocks Hamiltonian.
- voila
- · Replies 1 ·
Undergrad Difference between statistical and dynamical properties
- junt
- · Replies 4 ·
Undergrad Ionic bonding from a quantum mechanics point of view
- Ron19932017
- · Replies 1 ·
Undergrad Eigenvalues of Fermionic field operator
- Neutrinos02
- · Replies 13 ·
High School What is the amplitude of light?
- Daniel Petka
- · Replies 4 ·
High School Does the quantum field arise from something more fundamental?
- Twodogs
- · Replies 13 ·
Undergrad Doesn't wave duality for massive objects favor pilot-wave?
- Ostrados
- · Replies 11 ·
Graduate Hologram theory and quantum physics = existential crisis
- Noclip1
- · Replies 5 ·
Graduate Duality principle is 'safe and sound'
- StevieTNZ
- · Replies 3 ·
High School Does interference return when measuring with bright light instead of single photons?
- Ostrados
- · Replies 7 ·
Undergrad How are eigenstates and eigenvalues related in quantum mechanics?
- Jimmy87
- · Replies 22 ·
High School Does Dirac's Conclusion on Electron Velocity Still Align With Modern Physics?
- exmarine
- · Replies 7 ·
Undergrad What is the Role of Eigenfunctions in Understanding Quantum Mechanics?
- stevendaryl
- · Replies 14 ·
Undergrad Qubit mixed state density matrix coordinates on a Bloch ball
- maxverywell
- · Replies 2 ·
High School Quantum Mechanics vs. Pilot-Wave thought experiment
- cala
- · Replies 20 ·
Undergrad Path tree for repeated 45° qubit rotation in Aaronson lecture 9
- mike1000
- · Replies 29 ·
Undergrad Are two entangled photons described by the same wavefunction?
- Nickyv2423
- · Replies 6 ·
High School Interference pattern after a particle is detected?
- Nickyv2423
- · Replies 11 ·
Undergrad How does spin relate to the symmetry of a particle?
- kregg87
- · Replies 3 ·
Undergrad Heisenberg's Uncertainty Principle common misconceptions
- Jimmy87
- · Replies 52 ·
Undergrad No r dependence in L operator?
- DoobleD
- · Replies 32 ·
High School Could particles be higher dimensional objects appearing as superpositions?
- zeroace
- · Replies 1 ·
Undergrad How Fermat's principle interprets diffraction and interference
- zhouhao
- · Replies 1 ·
High School Interference pattern, one particle at a time
- MindWalk
- · Replies 25 ·
Undergrad Commuting observables vs. exchanging measurements
- greypilgrim
- · Replies 5 ·
High School Electron in the double-slit experiment
- Jens Lundell
- · Replies 33 ·
High School Why are photons from stimulated emission in phase with the incident photon?
- Karolus
- · Replies 9 ·
Undergrad Cognitive Dissonance and Quantum Mechanics?
- mike1000
- · Replies 18 ·
Undergrad Why does topology matter in determining fermions and bosons?
- Jezza
- · Replies 4 ·
Undergrad How is weak isospin/hypercharge calculated?
- Harry235435
- · Replies 1 ·
Graduate Are there different "types" of renormalization
- ftr
- · Replies 17 ·
High School Here is a good video that explains non-locality simply
- mike1000
- · Replies 18 ·
Graduate Feynman rule for closed fermion loop in QED
- spaghetti3451
- · Replies 4 ·
Graduate Classical universe and experimental choices
- A. Neumaier
- · Replies 17 ·
Undergrad Does Quantum Mechanics Deny Objective Reality Before Measurement?
- RTT
- · Replies 5 ·
High School Does right/left spin reverse in tunneling particles?
- fredt17
- · Replies 17 ·
High School Which mechanism explains Hawking radiation correctly?
- caspeerrr
- · Replies 2 ·
Graduate Can three particles be entangled?
- caspeerrr
- · Replies 2 ·
Undergrad Historic experiments and interpretations in quantum physics
- skanskan
- · Replies 2 ·
Undergrad Expectation value with imaginary component?
- Kenneth Adam Miller
- · Replies 25 ·
Undergrad What mediates the exchange force?
- Ben Wilson
- · Replies 23 ·
Graduate How Do Gamma Matrix Identities Relate to the Charge Conjugation Operator?
- Bala Tala
- · Replies 2 ·
Undergrad Why all the rejection of superdeterminism?
- greypilgrim
- · Replies 112 ·
Undergrad Symmetrized Lagrangian (second quantization)
- Neutrinos02
- · Replies 3 ·
Graduate Flow of charge on fermion propagator
- spaghetti3451
- · Replies 1 ·
High School What are we made of? (IB project)
- Nikola Milekic
- · Replies 8 ·
Insights Examples of Prequantum Field Theories III: Chern-Simons-type Theories
- Urs Schreiber
- · Replies 1 ·
Undergrad Does ΔPΔX = ΔEΔT? Solving the Uncertainty Principle
- mike1000
- · Replies 44 ·
Undergrad Boltzmann with degenerate levels
- jostpuur
- · Replies 34 ·
Undergrad Energy Level Change in Adiabatic Reversible Process
- Sorade
- · Replies 1 ·
High School Understanding Beta Decay: The Role of Quarks, Leptons, and Bosons
- Comeback City
- · Replies 8 ·
Undergrad Photoelectric absorption versus Compton scattering
- cdot1989
- · Replies 5 ·
Undergrad Difference between "realistic" and "predetermined"
- greypilgrim
- · Replies 2 ·
Graduate What Drives the Naming and Structure of One-Particle Irreducible Diagrams?
- spaghetti3451
- · Replies 1 ·
Undergrad Double slit experiment in 3 dimensions?
- mike1000
- · Replies 77 ·
Undergrad Bell's inequality experimental data
- Nivloc
- · Replies 2 ·
Undergrad Calculation of negative energy density in a Casimir cavity
- OrigamiNinja
- · Replies 21 ·
Undergrad Bell scenarios with communication
- DrClaude
- · Replies 1 ·
Undergrad Internal rotation kinetic energy operator
- Konte
- · Replies 2 ·
Insights The Physics of Virtual Particles - Comments
- A. Neumaier
- · Replies 32 ·
Graduate Weinberg: detecting changes to QM using atomic clocks
- Auto-Didact
- · Replies 2 ·
High School Electron moving to lower energy state
- Simon Peach
- · Replies 8 ·
Graduate Quantum Interest Conjecture and negative energy-density
- exvitermini
- · Replies 3 ·
Undergrad LSZ formula assumptions on vacuum and single-particle matrix elements
- Frank Castle
- · Replies 10 ·
Graduate Could someone explain Luders Rule?
- TimH
- · Replies 3 ·
High School Summation vs Integral for Wavefunction Superposition
- Isaac0427
- · Replies 24 ·
Graduate A surprise result using Helmann-type potential
- ftr
- · Replies 3 ·
Undergrad Understanding POVM: A Simple Explanation
- Trixie Mattel
- · Replies 5 ·
Undergrad Do photons that carry orbital angular momentum have mass?
- calinvass
- · Replies 5 ·
Undergrad The "complete state" of an electron
- ExplosivePete
- · Replies 2 ·
Undergrad De Broglie wavelength and wavefunction in quantum tunneling
- nashsth
- · Replies 13 ·
Graduate Why does a which-way detector collapse the wavefunction in the double slit experiment?
- steviereal
- · Replies 72 ·
Undergrad What is the Waveform of Virtual Photons?
- Jeff Root
- · Replies 4 ·
High School Is the Universe Just a Computer Simulation?
- TJung
- · Replies 1 ·
Graduate Is Each Pair in a Tripartite Cubic System in a Bell State?
- salley
- · Replies 2 ·
Undergrad Occam's razor and probability in QM
- simeonz
- · Replies 29 ·
Graduate Why is the Matter wave analogous to photon and derived from it?
- SunRay-dvsh
- · Replies 13 ·
High School Need Listing of Photon and Particle Quantum States
- Adam Computes
- · Replies 5 ·
Undergrad Interpreting These '2 Particles in a Box' Plots
- tomdodd4598
- · Replies 7 ·
Undergrad Is nuclear fission a quantum fluctuation
- rootone
- · Replies 19 ·
Graduate Path integral formula for a state with non-trivial time dependency
- ShayanJ
- · Replies 14 ·
High School Does Material Type Affect Double Slit Interference Patterns?
- hsdrop
- · Replies 15 ·
High School Bypassing Pauli Exclusion principle.
- MathematicalPhysicist
- · Replies 3 ·
Undergrad Are fixup operations required for entanglement in photon splitting?
- edguy99
- · Replies 16 ·
Undergrad Doppler Shift and Light Quanta: Questions on the Nature of Light and Observation
- Andy_K
- · Replies 3 ·