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 Angular momentum and spin unit
- Edge5
- · Replies 8 ·
Undergrad Particle in a box, boundary co-ordinate change
- I_laff
- · Replies 3 ·
Graduate Infrared divergence from redshifting light in QED
- Ken Gallock
- · Replies 7 ·
Undergrad Introduction to Quantum Mechanics
- Bilal Rajab Abbasi
- · Replies 3 ·
Undergrad Understanding PBR's Additional Assumption
- DrChinese
- · Replies 46 ·
Undergrad Simulations that disprove the PBR theorem
- kurt101
- · Replies 1 ·
Undergrad Derivatives of a normalizable wavefunction
- dyn
- · Replies 7 ·
Undergrad Some more questions about the PBR theorem
- ftr
- · Replies 9 ·
Graduate Covariance of equal time commutation relations
- Betty
- · Replies 3 ·
High School Can liquid helium conduct heat infinitely fast?
- YoungPhysicist
- · Replies 3 ·
Undergrad Is quantum mechanics formulated from 1st principles?
- wmikewells
- · Replies 10 ·
Undergrad Does a Quantum Field Creation Operator Create Particles at a Given Location?
- acegikmoqsuwy
- · Replies 1 ·
Undergrad Detecting Interference Patterns with Large Objects: The Double Slit Experiment
- john taylor
- · Replies 3 ·
Undergrad Calculating the eigenvalue of orbital angular momentum
- TheBlueDot
- · Replies 3 ·
Undergrad What does f(x) represent physically in expectation values?
- Technon
- · Replies 20 ·
High School Double slit experiment w/ light shining thru one aperture only
- sqljunkey
- · Replies 13 ·
Undergrad Can the quantum eraser experiment produce two different interference patterns?
- nomadreid
- · Replies 3 ·
Graduate Scanning Tunneling Microscope I-V curve
- Edge5
- · Replies 1 ·
Undergrad Can Quantum Suicide Be Modified to Create Quantum Insomnia?
- john taylor
- · Replies 6 ·
Undergrad Is Nature Non-Deterministic Due to Nonlocality in Quantum Mechanics?
- msumm21
- · Replies 4 ·
Undergrad What are the fundamental quantum fields and which are physically real?
- ParticleMan
- · Replies 27 ·
Undergrad How Do Entangled Particles Communicate Information in Quantum Mechanics?
- rasp
- · Replies 17 ·
Undergrad Does a free electron have an orbital magnetic moment?
- Edge5
- · Replies 2 ·
High School Understanding Wave-Particle Duality with Water Analogy
- Technon
- · Replies 19 ·
Undergrad Retro-causality thought experiment
- john taylor
- · Replies 5 ·
Undergrad How Would Electron Entanglement Affect Photon Emission
- Strange_matter
- · Replies 4 ·
Undergrad Does spin orbit coupling cause the split in the energy level of the electron?
- Edge5
- · Replies 1 ·
High School China launches quantum-enabled satellite Micius
- arabianights
- · Replies 6 ·
Undergrad Open Source Quantum Mechanics Visualization Software
- ParticleMan
- · Replies 1 ·
Graduate Why does momentum generate only finite translations?
- TroyElliott
- · Replies 10 ·
Undergrad How can electrons have the same spin in triplet state?
- Edge5
- · Replies 6 ·
Undergrad Unitary Processes and Completely Identical Quantum States
- ObjectivelyRational
- · Replies 9 ·
Undergrad How Does the Wavefunction Evolve in Quantum Mechanics?
- dyn
- · Replies 25 ·
High School Does light only behave like a particle when observed?
- JustinB
- · Replies 5 ·
High School Why prefer Hubble law over stretching spacetime for cosmic expansion
- Rene Kail
- · Replies 1 ·
Undergrad What does spin quantum number mean?
- Eve Litman
- · Replies 7 ·
Graduate Do causal principles apply to timelike entanglement and quantum superposition of orders?
- Rene Kail
- · Replies 1 ·
High School How to Determine Particle Probability with Constant Linear Momentum?
- volnei_cipriano
- · Replies 4 ·
Undergrad Fourier's Trick and calculation of Cn
- I_laff
- · Replies 8 ·
Undergrad Are some elementary particles too massive to obey QM?
- rasp
- · Replies 2 ·
Undergrad In the Casimir effect, can you slide plates unopposed by force?
- Christofer Br
- · Replies 3 ·
High School Virtual Particles and nothingness
- AnimaLife
- · Replies 3 ·
Undergrad Why do photons interact with e- but not with other photons?
- Phys12
- · Replies 19 ·
Undergrad Light rays don't interfere with each other
- kent davidge
- · Replies 4 ·
Graduate Why does nonrelativistic quantum theory lack PCT symmetry while QFT has it?
- Nusc
- · Replies 68 ·
Undergrad How Do You Transform Qubit States Between Different Bases on the Bloch Sphere?
- xwkkx
- · Replies 1 ·
Undergrad From Indistinguishable to Completely Identical Particles
- ObjectivelyRational
- · Replies 17 ·
High School Double Slit Experiment with Gamma Rays
- sqljunkey
- · Replies 2 ·
High School Multiverse with and without me
- Tony Dempsey
- · Replies 4 ·
Undergrad Confusion about Dirac notation
- Philip Land
- · Replies 3 ·
Undergrad Probability Amplitudes and the History of Science
- DaTario
- · Replies 24 ·
Undergrad Estimate of ground state energy for the Yukawa potential
- L_landau
- · Replies 1 ·
Undergrad What is the effect of ionization at low densities?
- Swamp Thing
- · Replies 1 ·
Undergrad Do eigenvectors of an operator form a one-dimensional representation?
- kent davidge
- · Replies 11 ·
Undergrad Are there quark "shells", just as electrons have shells?
- GeorgeBaxter
- · Replies 18 ·
Graduate Evaluate this paper on the derivation of the Born rule
- Prathyush
- · Replies 326 ·
Undergrad ?Measuring the Strong Force: Strength vs Distance
- Copernicuson
- · Replies 3 ·
High School How do entangled particles exchange spin information instantaneously?
- Thomas T
- · Replies 43 ·
Undergrad Role of determinate states in quantum mechanics
- MatthijsRog
- · Replies 2 ·
Graduate Polarization vector sums in QED
- Glenn Rowe
- · Replies 5 ·
Graduate Does path integral formulation require quadratic Hamiltonian?
- stevendaryl
- · Replies 19 ·
Graduate Asymptotic states in gauge theories
- samalkhaiat
- · Replies 27 ·
High School Feynman diagram with inconsistent time direction in IB Physics worksheet
- Cardinalmont
- · Replies 3 ·
Undergrad Photons and Heisenberg's Uncertainty Principle
- Meatlofe
- · Replies 12 ·
High School Why would non-locality solve the time paradox in dcqe?
- Emmerich
- · Replies 6 ·
Undergrad Why doesn't decoherence apply to unobserved experiments?
- Machine1701
- · Replies 11 ·
High School Does QM Use n-Dimensional or Infinite Dimensional Integrals?
- benorin
- · Replies 1 ·
Undergrad Obtain simultaneous eigenfunctions?
- John Greger
- · Replies 1 ·
Undergrad Is the Smallest Eigenvalue Always the Ground State Energy?
- Jeff Chen
- · Replies 1 ·
High School How to determine the wavefunction of photons?
- Mathfan7
- · Replies 4 ·
Undergrad Can Quantum Tunneling Occur Through a Material Barrier?
- Swamp Thing
- · Replies 4 ·
Undergrad In QFT people exchange electrons during touching?
- Philipsmett
- · Replies 7 ·
Undergrad Measurement OF a Beamsplitter - Destroys Quantum Interference?
- ObjectivelyRational
- · Replies 61 ·
High School Navigation by detecting anomalies in Earth's magnetic field
- Buzz Bloom
- · Replies 2 ·
High School Does dimensions have the same meaning in the Quantum world?
- Ginosko
- · Replies 2 ·
Undergrad Trying to understand my prof's derivation of Planck's Law
- prodo123
- · Replies 3 ·
Undergrad Solving Operator Problem with Matrix Representation
- Mentz114
- · Replies 16 ·
High School Entropy, irreversability, and the arrow of time
- entropy1
- · Replies 5 ·
Graduate Help Understanding a Quantum Circuit Identity
- CMJ96
- · Replies 5 ·
Undergrad Generalized Momentum is a linear functional of Velocity?
- chmodfree
- · Replies 4 ·
Undergrad Wavelength approaching the Planck length
- YoungPhysicist
- · Replies 3 ·
High School Is the Universe Deterministic?
- benorin
- · Replies 1 ·
Undergrad Why is the momentum operator -iℏ d/dx and position operator x?
- Another
- · Replies 5 ·
Undergrad Photon absorption and electron ejection in the photoelectric effect
- Sandeep T S
- · Replies 1 ·
Undergrad Why does a BEC manifest no atom bunching?
- James2018
- · Replies 1 ·
Undergrad Can an electron be found outside the atom it belongs to?
- mitrasoumya
- · Replies 6 ·
High School What tells us photons were ever in a superposition in EPR
- Andrew Wright
- · Replies 5 ·
Undergrad Want some suggestions for research papers on quantum entanglement
- Hawkingo
- · Replies 6 ·
Undergrad Is Quantum Electrodynamics relevant to every electromagnetic field?
- Anne Ross
- · Replies 20 ·
Graduate Are quantum fields real objects in space?
- JG11
- · Replies 152 ·
High School Why expand energy and states as power series in the perturbation parameter
- whatisreality
- · Replies 3 ·
Undergrad Linear Algebra and Identity Operator Generalized to 3D
- Electric to be
- · Replies 1 ·
Undergrad How does a nanogenerator work in quantum field theory?
- Philipsmett
- · Replies 22 ·
Undergrad Value of orbital angular momentum for two particles
- Decimal
- · Replies 2 ·
Undergrad About the Heisenberg uncertainty principle
- Another
- · Replies 2 ·
Undergrad Would this experiment prove or disprove quantum randomness?
- john taylor
- · Replies 19 ·
Undergrad Wick's theorem and Nucleon scattering
- Ken Gallock
- · Replies 3 ·
Undergrad General Concepts About Fermi-Dirac Distribution
- MartinCort
- · Replies 8 ·
Undergrad Does "Decoherence" really explain anything?
- jon4444
- · Replies 13 ·
Undergrad Are the diagonal elements of a density matrix the squared wave amplitudes?
- Jonathan freeman
- · Replies 16 ·