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.
Threads
Graduate Conservation of angular momentum (central force)
- HAMJOOP
- · Replies 3 ·
Graduate Coherent States: Ʃ(|α|2)n = 1?
- Hazzattack
- · Replies 3 ·
Graduate Time-dependent SE for 'discrete' time steps
- DougD720
- · Replies 1 ·
Graduate Photons as virtual particles in High energy
- da_steve
- · Replies 22 ·
Graduate Entangled Particles: Can They Be Distinguished?
- Learningd
- · Replies 2 ·
Graduate How to determine the product of two Hermitian operators is Hermitian
- lonewolf219
- · Replies 7 ·
Graduate Could element 137 electrons become superluminal in a retrocausal atom?
- Superposed_Cat
- · Replies 4 ·
Graduate Combine Hamiltonians of two different bases
- TheDestroyer
- · Replies 13 ·
Graduate Why are wavefunctions represented as eigenvectors?
- Superposed_Cat
- · Replies 11 ·
Graduate Why all the clinging to locality?
- greypilgrim
- · Replies 96 ·
Graduate Using Quantum Dots for Single Photon Creation in Lab Research
- Xyius
- · Replies 8 ·
Graduate Pauli's exclusion principle
- Ravi Mohan
- · Replies 2 ·
Graduate Find Frequency of Molecular Vibration for Melanin, Serotonin, & Insulin
- Dakai
- · Replies 3 ·
Graduate Where to learn the matrix formulation of QM
- Superposed_Cat
- · Replies 3 ·
Graduate What causes the electron spin collapse
- USeptim
- · Replies 13 ·
Graduate Feynman Lectures and Uncertainty Principle
- forcefield
- · Replies 6 ·
Graduate Are Bound States Always Entangled in Quantum Mechanics?
- metroplex021
- · Replies 1 ·
Graduate Simple electron recoil question
- johne1618
- · Replies 7 ·
Graduate Interaction between wavefunction of two particles
- San K
- · Replies 16 ·
Graduate Solving [H,x] Operator Algebra
- FarticleFysics
- · Replies 2 ·
Graduate Contractions of indices of the 4-vectors
- nikol
- · Replies 2 ·
Graduate The phrase, predictions of quantum mechanics
- hiddenvariable
- · Replies 22 ·
Graduate Why is wave/particle duality so hard to imagine?
- cytochrome
- · Replies 7 ·
Graduate Open Problems in Interplay between QM & 2nd Law of Thermodynamics?
- Geremia
- · Replies 3 ·
Graduate Phrase 'the field is in [certain] representation of a [certain] group'
- Stan324
- · Replies 2 ·
Graduate Has this experiment been done?
- StevieTNZ
- · Replies 2 ·
Graduate Emission of photons by vibrational relaxation of molecules
- ns_phonon
- · Replies 12 ·
Graduate What does 0 amplitude mean in waves and quantum physics?
- MathewsMD
- · Replies 5 ·
Graduate Direct calculation of the propagator
- SamuraiJack
- · Replies 3 ·
Graduate What is the physical meaning for a particle in harmonic oscillator ?
- Outrageous
- · Replies 11 ·
Graduate Rotation and Boost Commutating on the Same Axis
- JordanGo
- · Replies 3 ·
Graduate Understanding N-point Correlation Functions in Particle Scattering Processes
- copernicus1
- · Replies 3 ·
Graduate Why can you only contract one field in the Wilson approach to renormalization?
- nikol
- · Replies 3 ·
Graduate Uncertainty principle asymmetric with respect to time?
- bcrelling
- · Replies 7 ·
Undergrad Orbitals and Nucleus - Quick question
- Elpinetos
- · Replies 2 ·
Graduate Adding Angular Momentum is commutative, right?
- TheDestroyer
- · Replies 4 ·
Graduate Can Two Photons Really Form Bound States?
- Claustral
- · Replies 4 ·
Undergrad Why are waves represented as complex numbers?
- Superposed_Cat
- · Replies 10 ·
Graduate Sum or Integral? Understanding the Calculation of Casimir Effect Measurements
- epislon58
- · Replies 2 ·
Graduate Double delta function potential: two bound states vs one ?
- Aziza
- · Replies 2 ·
Graduate Question about quantum of excitations in QED
- lightarrow
- · Replies 5 ·
Undergrad Probability rate of calculation
- Simontmitchell
- · Replies 2 ·
Graduate Unbound particle through potential
- omiros
- · Replies 1 ·
Graduate Hamiltonian matrix off diagonal elements?
- TheDestroyer
- · Replies 4 ·
Graduate Fermions and Coherent States: What's the Connection?
- ShayanJ
- · Replies 9 ·
Graduate Do photons carry more than energy, momentum and angular momentum?
- jarekd
- · Replies 44 ·
Graduate Where is the boundary between quantum and classical mechanics?
- alexay95
- · Replies 11 ·
Graduate Solving Schrödinger Equation: Step-by-Step Tutorial
- Superposed_Cat
- · Replies 18 ·
Graduate Is Velocity in Quantum Mechanics Meaningless?
- hokhani
- · Replies 6 ·
Undergrad Feynman lectures and electron path
- forcefield
- · Replies 1 ·
Graduate Many Particle in a one dimensional box
- dev70
- · Replies 5 ·
Graduate Rotation of Spin Operator and Vector in 3D Space
- jk22
- · Replies 1 ·
Graduate What Is the Physical Significance of Planck Units and Their Derivation?
- jbar18
- · Replies 4 ·
Graduate UP regarding value of a field and its rate of change
- Suwailem
- · Replies 5 ·
Graduate Sommerfeld uncertainty principle
- arivero
- · Replies 1 ·
Graduate Antimatter Why does it annhiliate on contact with ordinary matter?
- Superposed_Cat
- · Replies 4 ·
Graduate Is the Number of Colors in QCD Limited to Just 3?
- stevendaryl
- · Replies 5 ·
Graduate Entanglement to speak faster than light
- friend
- · Replies 15 ·
High School Confusing that light is the only wave that doesn't move through
- xirow
- · Replies 7 ·
Graduate Why does particle size affect EM radiation scattering
- Justin Hawk
- · Replies 2 ·
Graduate Can anyone make sense of these equations in this pdf
- moekuba
- · Replies 2 ·
Graduate Ehrenfest theorem, is there any condition for the operator Q?
- Outrageous
- · Replies 7 ·
Graduate Stillness of Systems: Physics Laws & Double-Slit Experiment
- StevieTNZ
- · Replies 5 ·
Graduate Finding the operators for time derivatives of observables
- snoopies622
- · Replies 1 ·
Graduate Why time is not an observable in quantum theory?
- rpt
- · Replies 137 ·
Graduate How to understand the off-diagonal elements
- phdphysics
- · Replies 2 ·
Graduate Gaussian Integrals for Quantum States of well Defined Momentum
- lukka
- · Replies 10 ·
Graduate Analyzing Bell's inequality for different measurement angles
- greypilgrim
- · Replies 6 ·
Graduate What Are the Origins and Mechanisms Behind the H-α Hydrogen Spectral Series?
- bobie
- · Replies 23 ·
Graduate How Does Hawking Radiation Influence the Black Hole Information Paradox?
- Superposed_Cat
- · Replies 18 ·
Graduate Bell experiment: Rotate measurement device 180°
- greypilgrim
- · Replies 5 ·
High School Information carrued by photons.
- medgalis
- · Replies 1 ·
Undergrad QM: Need Help Applying Fourier Transform
- Radarithm
- · Replies 4 ·
Graduate Electromagnetism - interaction between the electron and the quarks
- forcefield
- · Replies 20 ·
Graduate Elektromagnetic field ~ probability amplitudes
- birulami
- · Replies 1 ·
Graduate Spontaneous Emission + Reversibility
- StevieTNZ
- · Replies 3 ·
Graduate Can we ever truly predict the future positions of atoms?
- Ahmed_usa
- · Replies 5 ·
Graduate Quantum Mechanics: Understanding Particles at a Distance
- whiteboard1
- · Replies 36 ·
Graduate Electron Energy Level Transitions
- Jimmy87
- · Replies 3 ·
Graduate Understanding the Wave Nature of Photons in Double Slit Experiments
- DParlevliet
- · Replies 67 ·
Graduate What happens if you measure the spin of entangled particle second time
- Elvin12
- · Replies 2 ·
Graduate How Does Quantum Entanglement Enable Faster Than Light Information Transfer?
- Magna Visus
- · Replies 11 ·
Graduate Measuring spin on electrons prepared in various directions
- Jeronimus
- · Replies 1 ·
Graduate Understand Operator Dispersion in Sakurai's "Modern Quantum Physics
- HubertP
- · Replies 2 ·
Graduate Double-Slit Experiment With Various Energy Particles
- StevieTNZ
- · Replies 1 ·
Graduate Why does a BBO crystal create entangled photons?
- greypilgrim
- · Replies 8 ·
Graduate Double Slit Experiment: Wave-Particle Duality
- Sunil.Iyengar
- · Replies 25 ·
Graduate What is the significance of operator conventions in quantum mechanics?
- xdeimos
- · Replies 3 ·
Graduate Lowest energy state with infinite and finite potential
- omiros
- · Replies 2 ·
Undergrad Reduced Planck's constant and Planck's constant?
- Numeriprimi
- · Replies 2 ·
Graduate Can Electron Degeneracy Pressure be Visualized?
- Positron137
- · Replies 2 ·
Graduate Hellman-Feynman Theorem: Coulomb Repulsion & Attraction
- Septim
- · Replies 5 ·
Graduate Measurement of entangled particles causes dechorence at a distance?
- craigi
- · Replies 50 ·
Graduate Wave functions for 2D potential with spin interactions
- BeauGeste
- · Replies 1 ·
Graduate Completeness Relation: Significance & Multiplying State Vector
- wasi-uz-zaman
- · Replies 1 ·
Graduate Concepts about infinite potential well
- VHAHAHA
- · Replies 6 ·
Graduate How do we get the expectation value formula?
- Outrageous
- · Replies 8 ·
High School Variation of the Double-slit experiment
- Just Wondering
- · Replies 7 ·
Graduate Can continuously (strongly) measured quantities ever change state?
- James MC
- · Replies 15 ·
Graduate Entagled Electrons - measuring both x and y spin
- Jeronimus
- · Replies 21 ·