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 Methods for deriving harmonic oscillator wavefunctions
- SemM
- · Replies 8 ·
Undergrad Classical chaos and quantum mechanics
- A. Neumaier
- · Replies 65 ·
Undergrad Why doesn't sigma change in Weinberg's one-particle state definition?
- hgandh
- · Replies 1 ·
Undergrad I am interested in Schrodinger equation with tempor. element
- Viorel Popescu
- · Replies 1 ·
Graduate Decoherence in the double slit experiment
- Agrippa
- · Replies 33 ·
Undergrad Effect of momentum distribution on probability density
- WWCY
- · Replies 4 ·
Graduate I'm getting the wrong inner product of Fock space
- hideelo
- · Replies 11 ·
High School (N+1) enhancement of spontaneous emission, why not (N+1/2)
- Spinnor
- · Replies 17 ·
Graduate Entanglement in Ultracold Chemistry and Physics
- bt623
- · Replies 1 ·
Graduate Mathematical Quantum Field Theory - Gauge symmetries - Comments
- Urs Schreiber
- · Replies 17 ·
Graduate Velocity dependence of operators in Inonu-Wigner contraction
- hideelo
- · Replies 1 ·
Undergrad About the strength of a perturbing potential
- ftft
- · Replies 1 ·
Undergrad Thought experiment about wave functions
- ftr
- · Replies 29 ·
Graduate Is [\vec{p}^2, \vec{p} \times \vec{L}] Equal to Zero?
- LagrangeEuler
- · Replies 2 ·
Undergrad Probabilities for degenerate eigenvalues?
- LarryS
- · Replies 3 ·
Graduate Operator Identity: Quantum Mechanics Explanation w/ References
- LagrangeEuler
- · Replies 7 ·
High School How do you calculate the uncertainty in T using graphs?
- heavystray
- · Replies 16 ·
Graduate Mathematical Quantum Field Theory - Reduced Phase Space - Comments
- Urs Schreiber
- · Replies 4 ·
Graduate Understanding Dirac Equation Spinor Boosts
- Josh1079
- · Replies 7 ·
Graduate Mathematical Quantum Field Theory - Observables - Comments
- Urs Schreiber
- · Replies 8 ·
Undergrad What Books Explain Quantum Physics Experiments and Interpretations Objectively?
- Risk
- · Replies 7 ·
Undergrad Orbital electrons in stationary states?
- fox26
- · Replies 15 ·
High School Quantum Theory and its Precision
- Jimmy87
- · Replies 22 ·
Undergrad Why is position-space favored in QM?
- LarryS
- · Replies 19 ·
Graduate Two-Photon Excitation: Theory and Applications
- kmcguir
- · Replies 3 ·
Graduate Clebsch Gordan coefficients
- LagrangeEuler
- · Replies 1 ·
Undergrad What are the limits of the boundaries for the Schrödigner equation
- SemM
- · Replies 19 ·
Graduate Can wavepackets be used to solve ODEs in Hilbert spaces?
- SemM
- · Replies 5 ·
High School Do all non-commuting observables generate an uncertainty principle?
- Anupama
- · Replies 3 ·
High School Entanglement and pair-production and annihilation
- HAYAO
- · Replies 2 ·
Undergrad What does the path integral randomize in position measurements?
- LarryS
- · Replies 2 ·
High School Should quantum theory be rebuilt on different foundations?
- slow
- · Replies 10 ·
Undergrad Understanding Spin States in Hilbert Space
- member 545369
- · Replies 7 ·
Undergrad Should the energy density of the vacuum be zero?
- jcap
- · Replies 8 ·
Undergrad Is Bell's Theorem Inconsistent with Quantum Mechanics?
- emuc
- · Replies 55 ·
Graduate Implementing Higher Degrees of Freedom
- Fluxation
- · Replies 1 ·
Undergrad Time Delay on Multiple Photons when travelling from one plac
- Cael
- · Replies 5 ·
Undergrad Why does the magnetic moment precess without changing angle in Stern-Gerlach?
- WWCY
- · Replies 5 ·
Graduate Qubit error rate of QKD BB84 protocol
- Pattarasak
- · Replies 1 ·
Graduate Law of transformation of vectors due to rotations
- LagrangeEuler
- · Replies 5 ·
Graduate About nonhermiticity in plasmonic dimers
- Dan Zar
- · Replies 1 ·
Undergrad How to calculate the photons/pulse of Laser diode?
- Pattarasak
- · Replies 3 ·
Graduate What is the Wavelength of the Pilot Wave in the Pilot Wave Theory?
- sha1000
- · Replies 4 ·
Undergrad Why does a quantum system with many degrees of freedom imply orthogonality?
- Erland
- · Replies 2 ·
High School Understanding Bell’s inequality
- rede96
- · Replies 36 ·
Undergrad Spin and polarization basis problem?
- Mentz114
- · Replies 22 ·
Undergrad How Does Dirac Notation Simplify Quantum Mechanics for Harmonic Oscillators?
- jstrunk
- · Replies 17 ·
Graduate Quantum measurement operators with Poisson distribution
- Danny Boy
- · Replies 6 ·
Undergrad What's the interval between photons in stimulated emission?
- Enty
- · Replies 2 ·
Graduate Fiber Optics Bandwidth Question
- gxiv
- · Replies 2 ·
Undergrad Rotational Transitions: What Are They?
- john t
- · Replies 1 ·
Graduate How Do Quantum Measurements Impact System Coherence?
- Danny Boy
- · Replies 1 ·
Undergrad Can virtual energy fluctuations in empty space have real effects?
- jcap
- · Replies 2 ·
Graduate Commutation Relation: Hi Parity Operator?
- fatema
- · Replies 4 ·
Graduate Von Neumann Entropy of a joint state
- Danny Boy
- · Replies 3 ·
Undergrad Davison-Germer experiment - Bragg condition
- Strides
- · Replies 2 ·
Graduate Coupling constants with fractional dimensions
- hilbert2
- · Replies 2 ·
Undergrad The Role of Causality in Primary and Secondary Physics
- Johan0001
- · Replies 14 ·
Graduate Mathematical Quantum Field Theory - Fields - Comments
- Urs Schreiber
- · Replies 82 ·
High School Where is the mistake -- violation of Heisenberg uncertainty
- MichPod
- · Replies 23 ·
Graduate Proving Gamma 5 Anticommutes with Gamma Matrices
- classy cal
- · Replies 3 ·
Graduate Non-selfadjointness and solutions
- SemM
- · Replies 23 ·
High School Quantum Superposition: Is It Limited or Unlimited?
- Allen_Wolf
- · Replies 2 ·
Graduate Interesting article on gravity and the zero-point energy
- SemM
- · Replies 2 ·
Undergrad Delayed Choice / Quantum Eraser Experiment Question?
- Phillane
- · Replies 5 ·
Undergrad How to identify admissible functions in QM by simple math?
- SemM
- · Replies 2 ·
Undergrad Is the Wavefunction Speed in Quantum Mechanics Wrong?
- fox26
- · Replies 8 ·
Undergrad Understanding Gauge Symmetry: A Review of the Schrödinger Equation
- arlesterc
- · Replies 3 ·
Undergrad Normalisation constant expansion of spinor field
- Josh1079
- · Replies 2 ·
High School Can we build a microscope to see an atom?
- Helloworld75344
- · Replies 4 ·
High School Double slit experiment question
- ElanaC
- · Replies 6 ·
High School What happens to virtual photons when an EMF is extinguished?
- Fluxation
- · Replies 8 ·
Undergrad Checking the effect an operator has on a state
- whatisreality
- · Replies 1 ·
Undergrad Why do measurements prefer eigenstates of the observable?
- intervoxel
- · Replies 1 ·
Undergrad Are entanglement correlations truly random?
- entropy1
- · Replies 92 ·
High School Is action quantization the origin of uncertainty in position-momentum measurements?
- Rigel XIX
- · Replies 19 ·
Graduate Building on QP from 5 reasonable axioms
- normvcr
- · Replies 34 ·
Graduate Mathematical Quantum Field Theory - Free Quantum Fields - Comments
- Urs Schreiber
- · Replies 1 ·
Graduate Schwartz equation 2.72 field expansion
- John Fennie
- · Replies 4 ·
Undergrad Can Exact Joint Probability Distributions Predict Violations in CHSH Tests?
- Mentz114
- · Replies 14 ·
Undergrad The Rabi Problem: Solving with the Semiclassical Approach
- Vineesha
- · Replies 4 ·
High School Does Copenhagen interpretation require conscious observation?
- Trollfaz
- · Replies 6 ·
Graduate How Does the Wavefunction for n-Particles Relate to One-Dimensional Systems?
- SemM
- · Replies 9 ·
Graduate Justification for no properties before measurement
- ggraham76
- · Replies 120 ·
Undergrad How Do Different Representations in Quantum Mechanics Compare?
- SemM
- · Replies 7 ·
Undergrad Spontaneous parametric down conversion photons
- Dadface
- · Replies 5 ·
Graduate Who wrote "Ch 6 Groups & Representations in QM"?
- pellis
- · Replies 3 ·
High School Does this connect Quantum Theory and Special Relativity?
- QuantumTheoryThinker
- · Replies 8 ·
Undergrad Force as a Time Derivative of ihk
- Bob Dylan
- · Replies 6 ·
Graduate Berry phase and parallel transport
- Joker93
- · Replies 22 ·
Graduate Path Integral of a Spontaneously Broken Theory
- JRudolfo
- · Replies 15 ·
Undergrad Feynman's Thesis, 3 Principles
- jamie.j1989
- · Replies 2 ·
Graduate Mathematical Quantum Field Theory - Quantization - Comments
- Urs Schreiber
- · Replies 15 ·
Undergrad What is the difference between virtual and real particles in string theory?
- Souhardya Nandi
- · Replies 10 ·
High School Gravity and spin 2 representation
- jk22
- · Replies 1 ·
Undergrad Source of energy for quantum tunneling of a particle
- SameerTahir
- · Replies 27 ·
Graduate What Are the Average Tunneling Electron Energies in a Ti/Nb2O5/Ti MIM Device?
- PhilQ
- · Replies 6 ·
High School Biggest Bosenova: Milligram Range Feasible?
- stefanbanev
- · Replies 6 ·
Undergrad Wheeler's delayed choice doesn't change the past
- Alfredo Tifi
- · Replies 157 ·
Undergrad Field operators and the uncertainty principle
- phoenix95
- · Replies 8 ·