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 Does an Electron Attract or Absorb a Photon?
- GarryS
- · Replies 2 ·
Graduate To find the linear momentum of a function
- MontavonM
- · Replies 2 ·
Graduate Mathematical formulation of non-local dynamics in quantum mechanics and spacetime
- riezer
- · Replies 2 ·
Graduate When can massless particle physics be derived from the m→0 limit?
- muppet
- · Replies 1 ·
Graduate Questions about rigid rotating dumbbell molecule
- creepypasta13
- · Replies 1 ·
Graduate How long does it take an electric dipole to emit a photon?
- blenx
- · Replies 12 ·
Graduate Quantum Entanglement and Useful Information
- xeryx35
- · Replies 1 ·
Graduate Neutrinos faster than light speed? What do you guys think?
- Entropee
- · Replies 5 ·
Graduate Born oppenheimer approximation vs adiabatic approximation
- 14lawrenze
- · Replies 4 ·
Graduate Interference between the particles
- jackychenp
- · Replies 3 ·
Graduate Dirac Delta from Continous Eigenfunctions
- Master J
- · Replies 4 ·
Graduate Action-at-a-distance in Sideways EPR-Bell?
- RUTA
- · Replies 93 ·
Graduate Why the renormalization group flow depends only the basic symmetry,but not Lagrangian
- ndung200790
- · Replies 3 ·
Graduate Energy from schrödinger equation
- Gavroy
- · Replies 1 ·
Graduate Dipole approximation in acceleration form
- kknull
- · Replies 1 ·
Graduate Why can't single photon measurements reveal quantum interference in DCQE?
- Daegs
- · Replies 1 ·
Graduate WOW [Possible] Non-local neutrinos at CERN
- DevilsAvocado
- · Replies 1 ·
Graduate X-ray diffraction in the presence of electric potential
- bearcharge
- · Replies 4 ·
Graduate Trying to understand Schrodinger's Equation
- hover
- · Replies 4 ·
Graduate Quantum explanations for adhesion, cohesion, strength and material properties
- mdshameer
- · Replies 2 ·
Graduate Charged particle and virtual photons
- xaratustra
- · Replies 3 ·
Graduate Could High Energy Virtual Particles Destroy a Starship?
- mrspeedybob
- · Replies 97 ·
Graduate Can Bell inequality violations occur in local realistic systems?
- moving-finger
- · Replies 49 ·
Graduate Outer product in Hilbert space
- jdstokes
- · Replies 8 ·
High School Don't bite my head off here right away, I'm only a high school
- escogido
- · Replies 6 ·
Graduate Exploring the Destructive Interference of Probability Waves in Quantum Mechanics
- thebiggerbang
- · Replies 21 ·
High School Understand Atoms: Get Answers to Your Questions
- iTzZh
- · Replies 1 ·
Graduate How to represent operator in matrix form
- phyin
- · Replies 1 ·
Graduate What Are the Best Conceptual Resources for Understanding Quantum Field Theory?
- Prathyush
- · Replies 3 ·
Graduate Why does a photon emit discrete frequencies of light?
- enwa
- · Replies 5 ·
Graduate Double Slit Experiment With Detectors
- StevieTNZ
- · Replies 3 ·
Graduate Special conditions of a wavefunction?
- MontavonM
- · Replies 4 ·
Graduate Ehrenfest theorem derivation in the Heisenberg picture
- McLaren Rulez
- · Replies 19 ·
Graduate How Does a Harmonic Oscillator Behave When Traveling at Constant Velocity?
- tamiry
- · Replies 1 ·
Graduate Is there a connection between a particle's momentum and kinetic energy?
- Black Integra
- · Replies 1 ·
Graduate How can the uncertainty principle and relativity coexist?
- Andru10
- · Replies 14 ·
Graduate Can Gravitons Convey Information Faster Than Light?
- Wallis
- · Replies 11 ·
Graduate Equivalent Expressions: Solve Energy Spectrum Transcendental Equation
- intervoxel
- · Replies 5 ·
Graduate Entanglement Between Different Types of Particles?
- LarryS
- · Replies 3 ·
Graduate Logic gates in excitonic single quantum dot qubits
- scallen
- · Replies 1 ·
Graduate A particular representation of gamma matrices
- array89
- · Replies 3 ·
Graduate The Flash quantum tunneling vibration problem.
- jetwaterluffy
- · Replies 1 ·
Graduate Virtual Particles and Hawking radiation
- rhenretta
- · Replies 16 ·
Graduate How Does the Quantum Harmonic Oscillator Allow Specific State Transitions?
- Kalidor
- · Replies 4 ·
Graduate Why are plane waves not possible representations of states in quantum theory?
- AxiomOfChoice
- · Replies 3 ·
Graduate Infinite Well Problem - Time Independent Schrodinger's Equation
- CB4
- · Replies 2 ·
Graduate Hi Folks,I am currently reading Brian Greene's 'The Fabric of the
- bugatti79
- · Replies 33 ·
Graduate Why does the position expectation value vanish for odd wavefunctions?
- Rabbot
- · Replies 1 ·
Graduate Schrödinger's cat, no superposition
- wsions
- · Replies 7 ·
Graduate Path Integral in first and second quantization
- friend
- · Replies 7 ·
Graduate Lie Derivative and acceleration
- jfy4
- · Replies 3 ·
Graduate When does quantum mechanics turn into Newtonian mechanics?
- conner.ubert
- · Replies 7 ·
Graduate Is Entanglement related to Gravitational Fields?
- cdux
- · Replies 2 ·
Graduate What is application of nonlinear sigma model?
- ndung200790
- · Replies 1 ·
Graduate What is the Meaning of Hilbert Space?
- plasma0073
- · Replies 3 ·
Graduate How do I move from QM to QFT and beyond?
- taylrl3
- · Replies 9 ·
Graduate Orthogonal Eigenfunctions (Landau Lifshitz)
- Master J
- · Replies 7 ·
Graduate How Does Quantum Indeterminacy Relate to the Uncertainty Principle?
- bryan.picc
- · Replies 2 ·
Graduate Is there such thing as an anti-photon?
- conner.ubert
- · Replies 36 ·
Graduate Quantum Mecanics unifing with General Relativity in 5D
- aglo6509
- · Replies 5 ·
Graduate How Are Photonic Crystals Analogous to Matter Waves?
- jbox23
- · Replies 4 ·
Graduate How did Niels Bohr obtain ΔT •ΔE > h?
- Bomicro
- · Replies 7 ·
Graduate What are eigenvalues and eigenstates in quantum mechanics?
- saba sha
- · Replies 1 ·
Graduate Why/how does energy change when measuring position?
- nonequilibrium
- · Replies 7 ·
Undergrad What is Planck's Quantization of Energy?
- DespicableMe
- · Replies 1 ·
Graduate New quantum energy storage proposed
- Stanley514
- · Replies 1 ·
Graduate Relative intensities of Zeeman components
- Acetylene5
- · Replies 1 ·
Graduate Trace of higher powers of Density Matrix
- maverick280857
- · Replies 3 ·
Graduate Quantum Teleportation of 3D objects
- Russellbacica
- · Replies 7 ·
Graduate Why is the adjoint of a bra-ket <φ|ψ>* = <ψ|φ>?
- Alexis21
- · Replies 4 ·
Graduate Very Basic questions on bra-ket notation
- Alexis21
- · Replies 2 ·
Graduate Why does ℏ appear in momentum space Fourier transforms?
- Identity
- · Replies 1 ·
Graduate Is the unitary operator unique?
- Demon117
- · Replies 2 ·
Graduate Experimental Verifications of the UPs?
- nonequilibrium
- · Replies 11 ·
Graduate Time-independent Schrodinger Equation
- ralqs
- · Replies 7 ·
Graduate Why dimensionless coupling in nonlinear sigma model corresponding to temperature?
- ndung200790
- · Replies 5 ·
Graduate Dirac Gamma matrices in the (-+++) metric
- brennan_t
- · Replies 5 ·
Graduate Proca Lagrangian (Math troubles with four vectors)
- Elwin.Martin
- · Replies 6 ·
Graduate Quantum Entanglement and the Big Bang
- atlucas
- · Replies 4 ·
Graduate Is the Hawking vs. Sussking debate still unresolved?
- bostonnew
- · Replies 11 ·
Graduate Are particles fundamental or do they just have wave-like probability amplitudes?
- Vorde
- · Replies 15 ·
Graduate Quantum Transmission Coefficient
- PineApple2
- · Replies 2 ·
Graduate How do you derive the Hilbert space and operator for a given observable?
- nonequilibrium
- · Replies 6 ·
Graduate Continuous Absorption of Energy by Chlorophyl
- Gavroy
- · Replies 2 ·
Graduate Quantum Entanglement - Equal Energy?
- LarryS
- · Replies 6 ·
Graduate What is a c-number and how is it used in quantum mechanics?
- kakarukeys
- · Replies 7 ·
Graduate How to Distinguish Pure and Mixed States in Quantum Mechanics?
- kthouz
- · Replies 7 ·
Graduate Does QM ever violate classical probability theory?
- BWV
- · Replies 25 ·
Graduate Quantum Numbers for Electron Spin
- Gavroy
- · Replies 7 ·
High School Why are some chemicals more reactive?
- nhmllr
- · Replies 2 ·
Graduate Chain rule for commutator (Lie derivative)?
- WraithM
- · Replies 4 ·
Graduate Expansion of a wave fuction in energy eigenfunctions
- zalook
- · Replies 12 ·
Graduate Particle in a box - why must wave function be continuous?
- andrewkirk
- · Replies 2 ·
Graduate Can the Casimir Effect prevent the formation of singularities in black holes?
- merrilee
- · Replies 1 ·
Graduate Diagonalizing Hamiltonian for Multi-Qubit Ising Model
- mehdi86
- · Replies 3 ·
Graduate Is Planck Time Truly a Proven Concept or Still Theoretical?
- bobsmith76
- · Replies 4 ·
Graduate Does electromagnetic radiation occupy space ? How much?
- Atyant.E
- · Replies 4 ·
Graduate Critical Exponents for Quantum Phase Transitions
- ianyappy
- · Replies 1 ·
Graduate Does Quantum Theory Offer a Physical Interpretation of Matter Waves?
- mysearch
- · Replies 14 ·
Graduate QM Text with many worked examples
- Sxlcartron
- · Replies 5 ·