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 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 ·
Undergrad Particle in the box eigenfunctions
- fog37
- · Replies 60 ·
Undergrad What Are Quantum Operators and the Role of Hermitian Matrices in Degeneracy?
- Karolus
- · Replies 10 ·
Undergrad Harmonic Oscillator equivalence
- Adolfo Scheidt
- · Replies 8 ·
Graduate Applying Wick's theorem to non-number-conserving quadratic Hamiltonians
- mupsi
- · Replies 14 ·
High School Why did famous people think consciousness causes collapse?
- low inhibition
- · Replies 43 ·
High School "Decoherence usually requires interaction with something macroscopic and an environment"
- fanieh
- · Replies 1 ·
Undergrad "Iterativity" of quantum potential?
- itssilva
- · Replies 14 ·
High School Understanding Environment-Induced Superselection in Quantum Systems
- fanieh
- · Replies 3 ·
Undergrad A few questions about Feynman's QED Lecture
- JohnnyGui
- · Replies 14 ·
Undergrad The absolute value of the frequency in quantum mechanics
- mccoy1
- · Replies 2 ·
High School Double slit experiment -- consciousness and information
- Viopia
- · Replies 52 ·
Undergrad Rotational excitation of quantum particle
- quantumSpaghetti
- · Replies 1 ·
Graduate Is my solution of time-dependent Schrodinger equation right?
- extranjero
- · Replies 10 ·
High School Why does cutting a pencil create new branches in the many-worlds interpretation?
- oquen
- · Replies 18 ·