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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Graduate Quantum Mechanics: String vs. Loop Theory
- Louis Cypher
- · Replies 2 ·
Graduate Interferometer questions, pure states?
- trosten
- · Replies 2 ·
High School Why Does Light Always Go Straight?
- scilover89
- · Replies 12 ·
Graduate The Limitations of Applying Relativity to Photons
- NewLocality
- · Replies 9 ·
High School How Quantum Entanglement Works
- Thangalin
- · Replies 4 ·
Graduate How Do You Find the Momentum Space Wave Function for an Infinite Square Well?
- RPI_Quantum
- · Replies 3 ·
Graduate Why Are Photons Massless in Quantum Field Theory?
- The_Thinker
- · Replies 17 ·
Graduate How Does Photon Angular Momentum Affect Zeeman Effect Observations?
- secret2
- · Replies 2 ·
Graduate Very small particles induce other particles
- Sterj
- · Replies 2 ·
Graduate Natural line width and energy uncertainty question
- anonymous299792458
- · Replies 5 ·
Graduate Could you entangle a charmed meson?
- jr.fermi
- · Replies 2 ·
Graduate Working in the Heisenberg picture and comparing with Schrödinger
- RedX
- · Replies 3 ·
Graduate Is a quantum field literally a field undergoing quantum mechanics?
- Gold Barz
- · Replies 14 ·
Graduate Very very very easy quantum exam question
- chrismuktar
- · Replies 2 ·
Graduate How Do We Choose the Right Hilbert Space in Quantum Mechanics?
- Kane O'Donnell
- · Replies 4 ·
Graduate Is Faster-than-light Communication Possible?
- rjensen2
- · Replies 22 ·
Undergrad Is all mass is just rotational inerta?
- The_Thinker
- · Replies 19 ·
Graduate Projection operators in a three-state quantum system
- el_hijoeputa
- · Replies 2 ·
Graduate How does uncertainty princ. apply to photons?
- JesseM
- · Replies 11 ·
Graduate How Do GUT and Quantum Theory Interact at the Extremes of Cosmology?
- einstein_from_oz
- · Replies 12 ·
Graduate What is an Eigenequation and Eigenvalue in the Schrodinger Equation?
- ohhhnooo
- · Replies 2 ·
Graduate Live Forever? Possibilities in Quantum Mechanics
- trosten
- · Replies 20 ·
High School Is Light Dispersed Due to Interference?
- demosthenes_001
- · Replies 3 ·
Undergrad Does a particle stop when bouncing off a wall at 90 degrees?
- MattTuc13
- · Replies 5 ·
Graduate How does a particle know when to send out its messenger?
- The_Thinker
- · Replies 3 ·
Graduate Solving for Momentum in Energy Equation
- RedX
- · Replies 6 ·
Graduate What Is the Peierls Critical Mass Formula?
- uraknai
- · Replies 2 ·
Graduate We can't know the velocity and position of a particle accurately ?
- The_Thinker
- · Replies 4 ·
Graduate Black Body Radiation: Classical Mechanics Can't Explain It
- ohhhnooo
- · Replies 2 ·
Undergrad What is rest mass and why do photons have zero rest mass?
- imran
- · Replies 2 ·
Graduate Why do uncharged neutrons produce magnetic fields?
- jet10
- · Replies 26 ·
Undergrad Is energy conserved for light?
- The_Thinker
- · Replies 4 ·
Graduate Bell's Theorem and Negative Probabilities
- DrChinese
- · Replies 52 ·
Graduate How is a self-adjoint linear operator defined in quantum mechanics?
- trosten
- · Replies 4 ·
Graduate What make system different from environment?
- scilover89
- · Replies 2 ·
Graduate Transition probabilities (basic concepts no math)
- RedX
- · Replies 2 ·
Graduate What does Bell's theorem actually prove about connections between particles?
- cangus
- · Replies 3 ·
Graduate Challenges in building a quantum computer and possible solutions
- Louis Cypher
- · Replies 2 ·
Graduate What is the relationship between quantum spin and classical spin?
- ppnl2
- · Replies 19 ·
Graduate What caused the first quantum fluctuation?
- wolram
- · Replies 6 ·
Graduate Why is Psi Considered a Complex Phenomenon?
- imran
- · Replies 8 ·
Graduate Does observation really mean interaction?
- kaos
- · Replies 24 ·
Graduate Jaynes' quantum syllogism and the pre-Copernican syllogism
- JohnBarchak
- · Replies 2 ·
Graduate Hund's Rules and L-S Coupling: Understanding Limitations and Confusions"
- secret2
- · Replies 2 ·
Graduate Quantum singularity reactor: theoretically possible?
- Tisthammerw
- · Replies 4 ·
Graduate Why are bilinear spinor expressions important in quantum field theory?
- robousy
- · Replies 8 ·
Undergrad What do we call the dimension measured with time?
- notsureanymore
- · Replies 8 ·
Graduate A particle with a mass of 6 MeV has energy in Joules of 6c^2?
- DB
- · Replies 18 ·
Undergrad Electron Wavelength: Find Data Here
- repugno
- · Replies 3 ·
Graduate Picturing wave/particle duality
- SimonA
- · Replies 38 ·
Graduate How Does Schrödinger's Equation Apply to a One-Dimensional Particle in a Box?
- FUNKER
- · Replies 15 ·
Graduate EPR paradox with entangled photons in double slit setups
- DrChinese
- · Replies 46 ·
Graduate Can Loophole-Free Bell Tests Resolve Quantum Nonlocality Debates?
- Caroline Thompson
- · Replies 2 ·
Graduate Uncertainty in heisenbergs uncertainty principle
- niehls
- · Replies 8 ·
Undergrad Learning group theory for quantum mechanics and particle physics
- greatscott
- · Replies 2 ·
Graduate Do quantum computers depend on the many worlds interpretation?
- kaos
- · Replies 23 ·
Graduate Problem with this renormalize quantum theory
- somy
- · Replies 3 ·
How come my shoes are where I left em last night?
- trosten
- · Replies 13 ·
Graduate Is there an archive with important QM articles?
- trosten
- · Replies 6 ·
Graduate Faster than light communication?
- Aphex_Twin
- · Replies 2 ·
Graduate Why don't electrons have infinite mass when moving at nearly the speed of light?
- Muhammad Ali
- · Replies 18 ·
Graduate Is the Law of Conservation of Energy Violated on a Macroscopic Scale?
- sid_galt
- · Replies 7 ·
Graduate Quantum Mechanics Exam Question: Hamiltonian and Energy Eigenvalues
- chrismuktar
- · Replies 6 ·
Graduate A Kalusza-Klein Hidden Variables Theory
- selfAdjoint
- · Replies 8 ·
Graduate EPR cryptography: Bennett, Brassard, and Ekert
- JohnBarchak
- · Replies 5 ·
Graduate Bell's theorem and negative probabilities in spin tests
- DrChinese
- · Replies 24 ·
Graduate How do detectors at double slit slits work and affect interference?
- gonzo
- · Replies 8 ·
Graduate Quantum Mechanics: The Bottom Line from Fuchs and Einstein
- JohnBarchak
- · Replies 3 ·
Graduate Aspect's Experiment Was Flawed
- Maestro
- · Replies 125 ·
Graduate How can we derive quantum mechanical operators?
- Sterj
- · Replies 7 ·
Graduate Chris Fuchs Comments on Quantum Crypto
- JohnBarchak
- · Replies 3 ·
Undergrad Problem involving light as a particle
- lank20125
- · Replies 2 ·
Undergrad Why can two people far apart both see the same distant star?
- notsureanymore
- · Replies 26 ·
Graduate Breaking the Speed Limit of Light
- prj45
- · Replies 4 ·
Graduate Crossing Symmetry and Mandelstam Variables; and (unrelated) external photons
- fliptomato
- · Replies 2 ·
Graduate Incompatability of GRT and Quantum Mechanics
- CarstenDierks
- · Replies 8 ·
Undergrad Is Light Truly Weightless in the Realm of Physics?
- ironbling
- · Replies 2 ·
Graduate How do photons interact with atoms in specular reflection?
- adaml
- · Replies 2 ·
Graduate Is Dirac Notation Standard in QM?
- houserichichi
- · Replies 2 ·
Graduate Capacitor plates and tunneling current
- sid_galt
- · Replies 4 ·
High School Is Space Really a Vacuum and Does it Determine the Size of the Universe?
- pikapika!
- · Replies 3 ·
Graduate Does destroying quantum measurement data restore interference?
- Al Marino
- · Replies 18 ·
Graduate Photoelectric effect and moving from A to B
- Cheman
- · Replies 6 ·
Undergrad Uncertainty Principal and calculating the future :p (Question)
- Supaiku
- · Replies 8 ·
Natural selection acts on the quantum world
- ZapperZ
- · Replies 6 ·
Graduate What is helicity in quantum mechanics?
- Mk
- · Replies 11 ·
Graduate I cann't undestand Quantum Algorithms. How I can?
- cartuz
- · Replies 2 ·
Graduate How do electrons tunnel through vacuum in a scanning tunneling microscope?
- sid_galt
- · Replies 2 ·
Graduate Ew quark/anti quark pops into existence
- wolram
- · Replies 4 ·
Graduate Is the Moon There When Nobody Looks?
- Cosmo16
- · Replies 15 ·
Graduate The universal quantum logic matrix
- Loren Booda
- · Replies 13 ·
Graduate Can someone recommend books about QFT?
- ben_jamin
- · Replies 6 ·
Graduate Fourier transorm problem has me stumped
- jasonc65
- · Replies 3 ·
Undergrad Superconductivity and magnetic fields
- mios76
- · Replies 5 ·
Graduate How do we define observe in QM?
- scilover89
- · Replies 6 ·
Graduate Question(s) related to Nonlinear Shroedinger Model
- jasonc65
- · Replies 6 ·
Graduate Answer for schrodinger cat paradox
- scilover89
- · Replies 7 ·
Graduate Questions on An Introduction to Quantum Field Theory by Peskin and Schroeder
- fliptomato
- · Replies 5 ·
Looking for a clear explanation of quantum physics for non-specialists
- darrenkarp
- · Replies 2 ·
Graduate Why do two electrons in the same state have opposite spins?
- trosten
- · Replies 9 ·