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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High School Will My Double Slit Experiment Setup Using an Electron Gun Work?
- DLHill
- · Replies 12 ·
Graduate Significance of commutation of operators? position and momentum
- solas99
- · Replies 3 ·
Graduate Difference between eigenvalue and an expectation value
- solas99
- · Replies 1 ·
Graduate Simple example of a POVM measurement that is not projective
- Demystifier
- · Replies 6 ·
Graduate Suppose i am performing the diffraction experiment using a single electron
- nouveau_riche
- · Replies 4 ·
Graduate Operators and commutation of operators
- solas99
- · Replies 3 ·
Graduate Smoothness of W matrix elements and vanishing of W(t) at infinity
- Sam Wong
- · Replies 3 ·
Graduate Strong and weak interactions particles
- Orion78
- · Replies 5 ·
Undergrad Normalizing Data: Unknown Values
- g.lemaitre
- · Replies 2 ·
Graduate Gravity - relationship with Electromagnetism?
- azawah
- · Replies 3 ·
Graduate Modification to the wavefunction with application of an electric field
- solas99
- · Replies 2 ·
Graduate What do s and t mean in the Heitler-London method?
- LagrangeEuler
- · Replies 2 ·
Graduate Math of the uncertainty principle
- Durandarte
- · Replies 3 ·
Graduate Are Observables Only Quantities That Commute with Hamiltonian?
- audioloop
- · Replies 10 ·
Undergrad Energy differences between sub shells
- CAF123
- · Replies 25 ·
Graduate Is time symmetric quantum mechanics being taken seriously in research?
- dm4b
- · Replies 19 ·
Graduate Linear potential well solutions and flat well
- solas99
- · Replies 1 ·
Graduate Potential Step (wave amplitude)
- solas99
- · Replies 1 ·
Graduate Contour integration in propagator
- ianhoolihan
- · Replies 50 ·
Undergrad What is the Wavelength of Earth and its Impact on the Macroscopic World?
- student34
- · Replies 20 ·
Graduate Why does Wien's displacement law predict infinite radiation energy?
- g.lemaitre
- · Replies 1 ·
Graduate Down quarks force vs ten tonnes truck force
- Orion78
- · Replies 4 ·
Graduate Dirac notation expressions as integrals
- maalpu
- · Replies 7 ·
Graduate Is Light the Only Form of Energy Released When Electrons Jump?
- jd12345
- · Replies 13 ·
Graduate Sean Carroll's view of the atom
- g.lemaitre
- · Replies 6 ·
Graduate Is Energy Really Quantized ? (electric Potential enrgy)
- hms.tech
- · Replies 8 ·
Graduate Displacement Operator definition
- McLaren Rulez
- · Replies 4 ·
Graduate Wave function collapse by orbital angular momentum operator Lz
- USeptim
- · Replies 3 ·
Graduate Particle number and resonance with Klein-Gordon waves.
- ianhoolihan
- · Replies 10 ·
Graduate Commutators, propagators, and measurement.
- ianhoolihan
- · Replies 25 ·
Graduate Operator-state correpondence in CFT
- physicus
- · Replies 1 ·
Graduate Why does beta-decay produce a continuous electron energy spectrum?
- Jack_G
- · Replies 1 ·
Graduate P orbital lobes tangent to plane of nucleus
- qhyperbola
- · Replies 4 ·
Graduate Derivation of equation 2-26 in Feynman's quantum mechanics and path integrals
- aife
- · Replies 2 ·
Graduate Is diagonalizing the Fock operator in quantum chemistry matrix mechanics?
- Einstein Mcfly
- · Replies 31 ·
Graduate Non-Orientable Quantum Surface
- JPBenowitz
- · Replies 2 ·
Graduate Matrix rep of operator acting on bras
- dEdt
- · Replies 15 ·
Graduate Mathematical Quantum Statistics: Why is A*rho of trace class?
- Illuvatar
- · Replies 1 ·
Graduate Dimension of <xn,tn|xn-1,tn-1>
- einstein1921
- · Replies 4 ·
Graduate Mathematics behind Planck's hypothesis and Einstein's photon concept
- XtremePhysX
- · Replies 3 ·
Graduate Lorentz-invariant electric charge?
- gulsen
- · Replies 51 ·
Graduate Confusion about derivative operators
- Loro
- · Replies 20 ·
Graduate What do a-causal and non-local mean in quantum mechanics?
- exmarine
- · Replies 7 ·
Graduate How to make relativistic correction to perturbation?
- zhanhai
- · Replies 1 ·
Graduate Why do the X, Y, Z operators switch parity?
- VortexLattice
- · Replies 4 ·
Graduate What is the definition of the spin of a particle?
- AbsoluteZer0
- · Replies 19 ·
Graduate The wave function of hydrogen
- einstein1921
- · Replies 4 ·
Graduate Understanding 'Kronecker Delta' in Feynman's Vol. 3 Lectures on Physics
- maser
- · Replies 2 ·
Graduate Where does the electron go during a quantum jump?
- QuantumHop
- · Replies 7 ·
Graduate Are We Still Entangled Since the Big Bang?
- AlSo
- · Replies 12 ·
Graduate Mediator of electrostatic repulsion
- rrosenthal
- · Replies 3 ·
Graduate What size do particles start to get a quantum effect
- Dammes
- · Replies 6 ·
Graduate What is the Uniqueness of Operators Acting on Bras in Quantum Mechanics?
- dEdt
- · Replies 7 ·
Graduate Dirac's Quantum Mechanics - the definition of the time evolution operator
- Loro
- · Replies 4 ·
Graduate General Formula for atomic emission spectra
- rayclan
- · Replies 1 ·
Graduate Why does the Heisenberg Hamiltonian have a minus sign?
- matematikuvol
- · Replies 1 ·
Graduate How Does the ΔS = 0 Selection Rule Arise?
- pfollansbee
- · Replies 2 ·
Graduate Singlet/Triplet state mixing question
- pfollansbee
- · Replies 5 ·
Graduate Why does the wave function evolve deterministically in quantum mechanics?
- cragar
- · Replies 3 ·
Graduate Pilot wave theory, fundamental forces
- msumm
- · Replies 159 ·
Graduate Understanding Scattering in Quantum Mechanics
- VortexLattice
- · Replies 5 ·
Graduate Anthropomorphic language in quantum superposition
- rasp
- · Replies 3 ·
Undergrad What was the ultraviolet catastrophe
- CrimpJiggler
- · Replies 10 ·
Undergrad Is It Accurate to Measure the Elementary Charge with Just One Oil Drop?
- tvelev92
- · Replies 5 ·
Graduate What is gauge theory and how does it apply to physics?
- vikram_n
- · Replies 7 ·
Graduate Who first solved the hydrogen atom in quantum mechanics?
- wdlang
- · Replies 5 ·
Graduate Maxwell-Bloch equations and operator-products
- Niles
- · Replies 10 ·
Graduate Is It Legal for Electrons to Have Energy Between Atomic Orbitals?
- Ezio3.1415
- · Replies 11 ·
Graduate No logically consistent relativistic quantum theory?
- genericusrnme
- · Replies 8 ·
Graduate Poincare Recurrence and the Klein-Gordon Equation
- JPBenowitz
- · Replies 1 ·
Graduate I am doing a measurement in a system S with the apparatus A, in an
- StarsRuler
- · Replies 2 ·
Graduate Trying to find references for polarization effect of Normal Zeeman Effect
- Ashuron
- · Replies 4 ·
Graduate Effect of phase difference on interference pattern
- San K
- · Replies 4 ·
Graduate Scattering partial wave expansion question
- VortexLattice
- · Replies 5 ·
Graduate How Should I Begin Studying Topological Quantum Field Theory?
- FedEx
- · Replies 1 ·
Graduate Timelike Curves leads to violation of heisenberg uncertainty Relation
- audioloop
- · Replies 4 ·
Graduate Bosons's amplitude to go into the same state at low temperatures
- zalook
- · Replies 1 ·
Graduate Equality of expectation value integral over coordinate space and over energy
- Derivator
- · Replies 3 ·
Graduate Tensor operators in Georgi's Lie algebras book
- Kontilera
- · Replies 3 ·
Graduate Collapse of wave function question
- VortexLattice
- · Replies 12 ·
Graduate 4-point correlation in phi 4 to first order
- jfy4
- · Replies 3 ·
Graduate Partial trace of density matrix
- climbon
- · Replies 1 ·
Graduate A quantum particle at rest viewed from a merry-go-round.
- Spinnor
- · Replies 4 ·
Graduate Question for understanding photon entanglement
- Philosifur
- · Replies 1 ·
Graduate Exponential of operator powers and eigenvalues
- KFC
- · Replies 3 ·
Graduate Klein-gordan Hamiltonian time-independent?
- geoduck
- · Replies 1 ·
Graduate Measurement of spin due to the force on a magnet
- Prathyush
- · Replies 15 ·
Graduate About eq. (5.7.23) in Weinberg's The quantum theory of fields vol. I
- diraq
- · Replies 1 ·
Graduate Quantum Falling Magnet: Lenz's Law Demo?
- gildomar
- · Replies 4 ·
Graduate Dimensions of klein-gordon field
- iangttymn
- · Replies 7 ·
Graduate How close do electrons need to be for Pauli exclusion to apply?
- VortexLattice
- · Replies 9 ·
Graduate What are Virtual Particles and How Do Borrowing and Repaying Work?
- JPBenowitz
- · Replies 28 ·
Graduate Weih's data: what ad hoc explanations do local and non-local models give?
- harrylin
- · Replies 60 ·
Graduate Wave-particle duality is a correct theory of reality
- Ostronomos
- · Replies 14 ·
Graduate Nonlinear evolution of the quantum mechanical state vector
- modaniel
- · Replies 1 ·
Undergrad What is the momentum of an electron?
- iVenky
- · Replies 1 ·
Graduate How does a non-linear Schrodinger equation implies non-unitary evolution?
- IRobot
- · Replies 2 ·
Graduate A question regarding tensor product of hilbert spaces
- azztech77
- · Replies 1 ·
Graduate What Particles Could Have Spin 2 1/2 in Physics?
- ImaLooser
- · Replies 4 ·
Graduate A classical wave as sum of many coherent quantum wavelets?
- lightarrow
- · Replies 7 ·