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 Not understanding cosmological constant in field theory
- geoduck
- · Replies 3 ·
Graduate What is the relationship between creation and annihilation operators in k-space?
- Trave11er
- · Replies 4 ·
Graduate Van del waals interaction in qm
- alejandrito29
- · Replies 1 ·
Graduate Is chirality dependent on the representation of the gamma matrices?
- AlbertEi
- · Replies 2 ·
Graduate Quantum Principles of Quantum Computers
- kye
- · Replies 2 ·
Graduate Intuition behind superposition probabilities?
- sciencegem
- · Replies 14 ·
Graduate Understanding Dirac Notation in Quantum Mechanics
- phyky
- · Replies 6 ·
Graduate Understanding Potential Energy in QM
- leinadle
- · Replies 5 ·
Graduate Can measuring photon direction predict which slit it passes through?
- glederfein
- · Replies 2 ·
Graduate Gauge forces and internal symmetries
- kye
- · Replies 9 ·
Graduate Is Heisenbergs uncertainty principle valid?
- edguy99
- · Replies 8 ·
Graduate Free particle wavefunction represent a fixed profile= wavepacket?
- Outrageous
- · Replies 2 ·
Graduate Schrödinger theory, bunch of questions
- fede.na
- · Replies 2 ·
Graduate Expectation value for non commuting operator
- phyky
- · Replies 12 ·
Graduate What does it mean to quantize a field
- copernicus1
- · Replies 4 ·
Graduate Has Wave Function Collapse Been Verified Experimentally ?
- Point Conception
- · Replies 1 ·
Graduate When do electrons display wave properties in the double slit experiment?
- Sunil.Iyengar
- · Replies 10 ·
Graduate What is the relationship between proton and electron spin in atoms?
- zincshow
- · Replies 2 ·
Graduate Quantum harmonics oscillator at high temperature
- alejandrito29
- · Replies 3 ·
Graduate What is wavefunction in the time-dependent schrodinger equation?
- goodphy
- · Replies 6 ·
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 How do you find the vibration frequency of a molecule like melanin?
- 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 Why do electrons need probability orbitals but nuclei don't?
- 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 Why sum for Casimir effect between plates but integral without them
- epislon58
- · Replies 2 ·
Graduate Double delta function potential: two bound states vs one ?
- Aziza
- · Replies 2 ·
Graduate Difference between EM field excitation modes and their energy differences 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 Why can't fermions have coherent states like bosons do?
- 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 Where to start learning the Schrödinger equation
- 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 Equations in arXiv paper 0003044 on electromagnetic theory
- moekuba
- · Replies 2 ·
Graduate Ehrenfest theorem, is there any condition for the operator Q?
- Outrageous
- · Replies 7 ·
Graduate Do moving slits affect the 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 Finding the separable state for Bell inequality violations below π/4
- greypilgrim
- · Replies 6 ·
Graduate Where does kinetic energy come from when an electron falls between hydrogen energy levels?
- bobie
- · Replies 23 ·
Graduate How Does Hawking Radiation Influence the Black Hole Information Paradox?
- Superposed_Cat
- · Replies 18 ·
Graduate Does rotating a Bell measurement device 180° affect locality?
- greypilgrim
- · Replies 5 ·
High School Information carrued by photons.
- medgalis
- · Replies 1 ·
Undergrad Applying the Fourier transform in quantum mechanics
- 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 How can we know the state of a distant particle?
- whiteboard1
- · Replies 36 ·
Graduate Electron Energy Level Transitions
- Jimmy87
- · Replies 3 ·
Graduate What is the wave in the double slit experiment?
- DParlevliet
- · Replies 67 ·