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 Solution to uncertainty principle
- CyberShot
- · Replies 9 ·
Graduate Are All Two-Particle Wave Functions Products of One-Particle Wave Functions?
- majed_q8i
- · Replies 10 ·
Graduate Quantum/Computational Chemistry
- IPnano
- · Replies 4 ·
Undergrad Is the Conservation of Energy ever violated?
- GoldPheonix
- · Replies 14 ·
Undergrad Where Do Photons Go After They Are Created?
- magicman54494
- · Replies 3 ·
Graduate Newbie problem about <a|b> and |a> <b|
- member 141513
- · Replies 4 ·
Graduate Are Mixed States Classical? | Niles
- Niles
- · Replies 1 ·
Graduate Can Blackbody Radiation Explain Heat Absorption in Hollow Cavities?
- psholtz
- · Replies 19 ·
Graduate Does the probability wave suggest past, present and future are illusory?
- jamjr1979
- · Replies 1 ·
High School Why can't atoms touch if they repel each other electromagnetically?
- CyberShot
- · Replies 14 ·
Graduate Do real particles or virtual particles form the fundamental building blocks?
- sujiwun
- · Replies 69 ·
Graduate Overlap integrals and eigenstates problem
- randybryan
- · Replies 2 ·
Undergrad Can a sinlge photon be polarised?
- _PJ_
- · Replies 11 ·
Graduate Direct products in quantum mechanics
- RedX
- · Replies 1 ·
Graduate G-factor Relation to Energy Perturbations
- QuantumClue
- · Replies 3 ·
Graduate Green's functions denominator singularity and density of states
- Master J
- · Replies 6 ·
Graduate Why discontinue(quantum)characteristic ultimately relates with probability in QM?
- ndung200790
- · Replies 7 ·
Graduate Is all electromagnetic radiation quantized?
- harrylin
- · Replies 25 ·
Graduate Positronium, Hydrogen, Schrodinger Equation
- andrewr
- · Replies 18 ·
Graduate Is There an Alternative to Anti-Commutation for Quantizing Fermions?
- kof9595995
- · Replies 2 ·
Graduate Do superposition states from the Schrödinger equation remain solutions as time evolves?
- StevieTNZ
- · Replies 4 ·
Graduate What stage are we at in Quantum Mechanics?
- bugatti79
- · Replies 10 ·
Graduate How are entangled particles captured and contained?
- waylon318
- · Replies 6 ·
Graduate Hot research problems in theoretical quantum optics and cavity QED
- physland
- · Replies 2 ·
Graduate What happens to energy transferred to an electron if it's not enough for a quantum jump?
- _PJ_
- · Replies 3 ·
Graduate Are there degrees of quantum entanglement?
- CosmicVoyager
- · Replies 4 ·
Graduate Boundedness of quantum observables?
- A. Neumaier
- · Replies 174 ·
Graduate Stern Gerlach Experiment, bra(c)kets etc
- bugatti79
- · Replies 2 ·
Graduate How is a quantum computer simulated?
- TriKri
- · Replies 1 ·
An awesome video on the double slit experiment
- Forestman
- · Replies 7 ·
Graduate How many periods of a photon are involved in proton energy level transistion?
- fred1234
- · Replies 3 ·
Graduate Is the Bohr radius smaller than expected?
- HarryWertM
- · Replies 10 ·
High School What is the Concept of a Potential Well?
- Bassalisk
- · Replies 1 ·
Graduate Why is subatomic behavior quantized instead of continuous?
- Forestman
- · Replies 12 ·
Graduate Who is Richard Borcherds and What is His Contribution to QFT?
- mitchell porter
- · Replies 10 ·
Graduate Density Functional Theory and the Local Density Approximation
- JMedley
- · Replies 8 ·
Graduate Two-photon decay wavelengths in hydrogen atoms
- zincshow
- · Replies 4 ·
Graduate I am working out of Sakurai and he says the integral with respect to
- Berko
- · Replies 5 ·
Undergrad Heat of a solid under high pressure
- dBrandon/dC
- · Replies 1 ·
Graduate How does Grover's algorithm search if the Oracle requires knowing the solution?
- gulsen
- · Replies 11 ·
Undergrad Orientation of Lowest Energy Photons from Hydrogen
- HarryWertM
- · Replies 3 ·
Undergrad Why can an electron in Compton scattering absorb a partial photon energy?
- Physicist
- · Replies 13 ·
Graduate Schrodinger's equation for H atom Some questions
- McLaren Rulez
- · Replies 5 ·
Graduate Problems understanding photons
- lazarus1907
- · Replies 7 ·
Graduate Can quantum field theory explain the g-factor in the Dirac equation?
- kof9595995
- · Replies 14 ·
Graduate Virtual Particles and Radioactivity
- Blair Nelson
- · Replies 15 ·
Graduate Entangled Lotto: Simulating Mermin's Bell Gedanken Experiment
- rlduncan
- · Replies 1 ·
Graduate Are Stern-Gerlach Filters Modeled by Hermitian Operators in Quantum Mechanics?
- Ray
- · Replies 1 ·
Graduate How to calculate reflection and transmission matrices for a Rashba Hamiltonian
- sokrates
- · Replies 1 ·
Graduate What Are the Key Concepts and Equations in Quantum Field Theory?
- StevieTNZ
- · Replies 9 ·
Graduate Are Fourier Transforms Truly Unique in Non-Covariant Gauges?
- RedX
- · Replies 19 ·
Graduate Quantum mechanical civilization
- alvarogz
- · Replies 4 ·
Undergrad Why is a photon released when an electron moves to a more stable level
- bobsmith76
- · Replies 4 ·
Graduate LSZ reduction coeffs etc (Srednicki)
- LAHLH
- · Replies 10 ·
Graduate Mathematical models, the 'real world' and quantum mechanics
- BernieM
- · Replies 7 ·
Graduate Generating Functional for Yukawa Interactions
- Phileas.Fogg
- · Replies 1 ·
Graduate Genereral:Questions about Srednicki's QFT
- haushofer
- · Replies 85 ·
Graduate Node and Nodless wavefunction?
- new_986
- · Replies 3 ·
Graduate Finding a reference for the Weyl rule derivation
- MathematicalPhysicist
- · Replies 3 ·
Graduate How do i perform a measurement of a many body system?
- spocchio
- · Replies 3 ·
Graduate Is Planck's Original Deduction Correct by Today's Physics Standards?
- aleazk
- · Replies 7 ·
Graduate What happens to electron spin under Lorentz transformation?
- alemsalem
- · Replies 4 ·
Graduate What is observable in a relativistic quantum field theory?
- A. Neumaier
- · Replies 26 ·
Graduate Meaning of SO(4) - SU(2)xSU(2)
- IRobot
- · Replies 12 ·
Graduate The maximum size of an object which can be teleported
- Dmitry67
- · Replies 30 ·
Graduate Wavefunction squared is Prob. Density?
- shredder666
- · Replies 9 ·
Graduate Dot product within the commutator
- sheelbe999
- · Replies 15 ·
Graduate Resources for learning bra-ket algebra
- mess1n
- · Replies 1 ·
Graduate How Did Quantum Field Theory and Renormalization Address Infinities in Physics?
- crisis
- · Replies 1 ·
Graduate What are the equations for angular momentum?
- AdrianMay
- · Replies 2 ·
Graduate Quantum entanglement vs relativity of time
- jackfield
- · Replies 9 ·
Graduate Covariant derivative in gauge theory
- ismaili
- · Replies 8 ·
Graduate Can we prove that there is a maximal complete set of commuting
- pythagoras88
- · Replies 3 ·
Graduate Why don't atoms self-destruct?
- QuantumClue
- · Replies 6 ·
Graduate What Are the States in Quantum Field Theory?
- Azrael84
- · Replies 147 ·
Graduate Understanding Quantum Numbers and Their Limits in Particle States
- UndeniablyRex
- · Replies 1 ·
Undergrad I2 Gas Molecules: Uncertainty in the Double Slit Experiment?
- FredT
- · Replies 3 ·
Graduate Delayed choice and information erasure
- Upisoft
- · Replies 51 ·
Graduate Why does combining SR with QM require a multiparticle picture?
- qsa
- · Replies 3 ·
Graduate New Feynman Rules in QED from Counterterms
- blackie1008
- · Replies 4 ·
Graduate Why does the QFT propagator spread beyond infinitesimal distances?
- RedX
- · Replies 3 ·
Graduate Conditions for translational invariance in space/time for a 2-point function?
- AJS2011
- · Replies 6 ·
Graduate Where can I learn how to manipulate operators?
- k4ff3
- · Replies 7 ·
Graduate Quantum Optics and Coherence Functions
- Niles
- · Replies 20 ·
Undergrad Correct units to derive Ryberg Constant in ev
- BWV
- · Replies 6 ·
Graduate How Is Spatial Coherence Derived from Heisenberg's Uncertainty Principle?
- Gavroy
- · Replies 1 ·
Graduate Field is more fundamental than particles
- exponent137
- · Replies 28 ·
Graduate Can electrons occupy superpositions of two basis states without violating Pauli exclusion?
- alemsalem
- · Replies 4 ·
Graduate Gauge symmetry for spin 1/2 fields
- Lapidus
- · Replies 14 ·
Graduate What was the quantum state at t=0 (big bang). Many thanks.
- thenaturalist
- · Replies 2 ·
Graduate Entagled pair and speed of light
- edpell
- · Replies 2 ·
Graduate Riemann vs. Lebesgue integral in QM
- AxiomOfChoice
- · Replies 12 ·
Graduate Operator-Valued Functions in Quantum Field Theory: Degrees of Freedom?
- plasmon
- · Replies 1 ·
Graduate Can an operator change a wave equation without changing the system?
- ShayanJ
- · Replies 9 ·
High School How to explain uncertainty principle to a freshman
- yxgao
- · Replies 11 ·
Graduate Double Slit Exp: What Really Happened?
- pb23me
- · Replies 1 ·
Graduate Why quantum field theory is not called quantum mechanics of changeable number particl
- ndung200790
- · Replies 10 ·
Graduate Rigorous construction of asymptotic states in φ⁴ theory
- A. Neumaier
- · Replies 29 ·
Graduate Many Boson Wavefunction (Non-Interacting)
- Master J
- · Replies 1 ·
Graduate Joy Christian's disproof of Bell
- ajw1
- · Replies 70 ·