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 What is the source of light emitted from combustion reactions?
- Infrasound
- · Replies 3 ·
Graduate Can light be considered as information only?
- p764rds
- · Replies 1 ·
Graduate Are probabilities for Eigen Vectors of Hamiltonians unaffected as time evolves?
- ask_LXXXVI
- · Replies 10 ·
Graduate Antiparticles from the Klein-Gordon equation
- tommy01
- · Replies 13 ·
Graduate Is information ALWAYS conserved in quantum mechanics?
- zeromodz
- · Replies 1 ·
Graduate Definition of Lagrangian Density?
- LarryS
- · Replies 5 ·
Graduate Can recording the dual slit experiment affect future outcomes?
- maquick
- · Replies 3 ·
Graduate Estimating Laser Force: The Relationship Between Photon Momentum and Light Power
- azaharak
- · Replies 6 ·
Graduate Why Does the Quantum Harmonic Oscillator's Equation Yield a Gaussian Curve?
- exponent137
- · Replies 4 ·
Graduate Significance of wave function and its sign
- vaibhavsharma
- · Replies 3 ·
Graduate Do time and space occur in quantum units?
- arcadesonfire
- · Replies 7 ·
Graduate Quantum Randomness and Free Will
- DavidGahan
- · Replies 4 ·
Graduate Quantum Tunneling and Entanglement
- MattRob
- · Replies 2 ·
Graduate Why do the photons produced by a laser have the same phase?
- mrdopebunny
- · Replies 3 ·
Graduate Helium Atom Ionization: Dual Electron Energy?
- Mokdad
- · Replies 2 ·
Graduate Majorana Path Integral: Deriving VEVs of Barred/Unbarred Fields
- LAHLH
- · Replies 5 ·
Graduate Quantum physics and relativity
- scope
- · Replies 8 ·
Graduate Confirming Uncertainty: Electromagnetic Fields in Hilbert Space
- snoopies622
- · Replies 5 ·
Graduate What Happens to Matter Near Absolute Zero and the Role of Bosons?
- physicsnoob12
- · Replies 9 ·
Graduate Canonical Variables: What Are They?
- peeyush_ali
- · Replies 7 ·
Graduate When particles are not being observed do they still exist?
- courtney1111
- · Replies 8 ·
Graduate The Klein-Gordon field as harmonic operators
- y35dp
- · Replies 1 ·
Graduate Prove that eigenstates of hermitian operator form a complete set
- fa2209
- · Replies 2 ·
Graduate Proof of Hellmann Feynman Theorem for TD wavefunctions
- Pablolopez
- · Replies 3 ·
Graduate Is superposition a valid assumption in classical systems?
- elduderino
- · Replies 3 ·
Graduate Non-differentiable path in path integral?
- kof9595995
- · Replies 9 ·
Graduate The inconsistency of quantum nonlocality
- yoda jedi
- · Replies 3 ·
Graduate The solution to the Shordinger's eq.
- rbwang1225
- · Replies 2 ·
Graduate Quantum Entanglement: Entanglable particles?
- nuiluidwde
- · Replies 2 ·
Graduate Bell Measurement on 3-qubit GHZ state?
- DodongoBongo
- · Replies 1 ·
Graduate Correlation between electronic band structure of an atomic species
- thinktank1985
- · Replies 1 ·
Graduate What determines the number of electrons in an atom
- thinktank1985
- · Replies 7 ·
Graduate Any quantum analog for Betrand's theorem?
- kof9595995
- · Replies 11 ·
Graduate Runaway Solution in QED: A Discussion with Lorenzo
- Sleuth
- · Replies 1 ·
Graduate The electron as a wave: what is it that waves
- carwe
- · Replies 3 ·
Graduate Normalizing the ground state wavefunction of hydrogen
- aaaa202
- · Replies 4 ·
Graduate What happens when objects reach the event horizon?
- physicsnoob12
- · Replies 1 ·
Graduate I dont understand why info cant be sent with entangled tripletes
- antonio glez
- · Replies 13 ·
Graduate Proof of Momentum Operator as Hermitian: Step-by-Step Guide
- aaaa202
- · Replies 4 ·
Graduate Hamiltonian-momentum commutator
- jarvinen
- · Replies 2 ·
Graduate Is Quantum Mechanics Really Dependent on Randomness and Probability?
- Phrak
- · Replies 16 ·
Graduate Errors in an article about electromagnetic fields and inductors
- Bararontok
- · Replies 8 ·
Graduate How do linear operators act on bras vs kets?
- aaaa202
- · Replies 2 ·
Graduate Does speed=frequency*wavelength for electrons?
- AdrianMay
- · Replies 13 ·
Graduate How Are Multiplets in Group Theory Related to Spin States in Quantum Mechanics?
- valleyman
- · Replies 2 ·
Graduate Superluminal instantaneous influence
- scope
- · Replies 5 ·
Graduate When to use ℏ, h, h/2 or ℏ/2 in Heisenberg's uncertainty principle?
- lavster
- · Replies 1 ·
Graduate Variable speed of light in QED
- exponent137
- · Replies 1 ·
Graduate What Are the Strange Results of Second Quantization?
- Hymne
- · Replies 4 ·
Graduate Why particle and antiparticle have the same mass?
- ndung200790
- · Replies 16 ·
Graduate Explicit form of time evolution operator
- bluesunday
- · Replies 10 ·
Graduate Does observation make particles and objects real in quantum mechanics?
- Elvin12
- · Replies 69 ·
Graduate How to derive the Breit equation (Pauli approximation) in position space?
- cddong
- · Replies 3 ·
Graduate How to understand electrostatics field in quantum level?
- ndung200790
- · Replies 1 ·
Graduate What Are the Matrix Forms of the Six Generators of Group SO(4)?
- YOBDC
- · Replies 8 ·
Graduate Coulombic interaction between the proton and electron of a hydrogen atom
- Demon117
- · Replies 2 ·
Graduate Proving the general hermitian operator property from the basis definition
- aaaa202
- · Replies 1 ·
Graduate Uncertainty Principle Hypothetical question
- NetMage
- · Replies 19 ·
Undergrad What is the largest size for identical particles?
- scope
- · Replies 4 ·
Graduate Temporaly uncertainty principle
- IRobot
- · Replies 74 ·
Graduate Can superposition be tested by gravity?
- cryptist
- · Replies 43 ·
Graduate Can a quantum formalism exist without a Hamiltonian Formalism
- elduderino
- · Replies 10 ·
Graduate Finding Spectrum of Hamiltonians
- curtdbz
- · Replies 4 ·
Graduate Analog of Hawking Radiation Observed?
- Phyisab****
- · Replies 8 ·
Graduate Question on delta potential function
- Brown Arrow
- · Replies 9 ·
Graduate Golden ratios in quantum mechanics?
- Loren Booda
- · Replies 4 ·
High School What is the purpose of studying the operator?
- aliaa.afify
- · Replies 2 ·
Graduate Why they call them Lie groups.
- AdrianMay
- · Replies 19 ·
Graduate Schrodinger's equation and the Diffusion equation
- snkk197
- · Replies 1 ·
Graduate How do Pauli and Dirac Matrices Relate to Quaternions?
- Hymne
- · Replies 2 ·
Graduate How Are Commutation Relations Derived in Quantum Field Theory?
- Chopin
- · Replies 4 ·
Graduate QFT: Srednicki's Book: What Does a(x) Represent?
- Hymne
- · Replies 2 ·
Graduate Time independent Klein–Gordon equation with boundary conditions.
- Spinnor
- · Replies 1 ·
Graduate Ladder operators for angular momentum
- Tvdmeer
- · Replies 4 ·
Graduate Worked Out Example of Consecutive Observations in QM
- boderam
- · Replies 3 ·
Graduate The cause of entanglement / coupling
- Talisman
- · Replies 17 ·
Graduate Dirac's explanation of negative energy states
- paweld
- · Replies 1 ·
Graduate Two Bosons in a Box: Is it 2/3?
- nonequilibrium
- · Replies 3 ·
Graduate Why is Schrodinger's Equation complex?
- Colin_Smith
- · Replies 39 ·
Graduate What Happens to Rainbow Fringes with Monochromatic Red Light Diffraction?
- luckis11
- · Replies 1 ·
Graduate Bell's theorem proof. Does it really proofs anything?
- 0xDEAD BEEF
- · Replies 93 ·
Undergrad Quantum Singularities - What Is It?
- !Live_4Ever!
- · Replies 17 ·
Graduate Why energy level transitions only absorb or emit photons？
- arielleon
- · Replies 4 ·
Graduate Equation describing particle with spin higher than 1/2
- paweld
- · Replies 5 ·
Graduate What is complex quantum mechanics?
- ber70
- · Replies 1 ·
Graduate Simultaneous diagonalization of two hermitian operators
- y.moghadamnia
- · Replies 2 ·
Graduate Which wave function and operator is responsible for the Double Slit Experiment?
- curtdbz
- · Replies 4 ·
Graduate Intuitions on a Dual Vector Space
- sineontheline
- · Replies 6 ·
Undergrad What is the electromagnetic field?
- bendavis78
- · Replies 2 ·
Graduate Time independent operators and Heisenberg eq - paradox?
- pellman
- · Replies 4 ·
Graduate Can you explain the phenomenon of stimulated emission in lasers?
- atmdw
- · Replies 3 ·
Graduate Is It Possible to Create a Perfect Square Using Planck Lengths?
- ianfort
- · Replies 3 ·
Graduate Does Quantum Physics Prove there is no such thing as Matter?
- n4esa
- · Replies 7 ·
Graduate Quantum immortality. Are we immortal?
- Dremmer
- · Replies 1 ·
Graduate Trapped Ion Computing Question
- jonlg_uk
- · Replies 4 ·
Graduate Effects of a 10^60 Decrease in Solar Photon Energy on Earth's Temperature
- bhsmith
- · Replies 2 ·
Graduate HiLets say I have a Hamiltonian which is invariant in e.g. the
- Niles
- · Replies 4 ·
Graduate Uncertain principle and Noether theorem?
- ndung200790
- · Replies 3 ·
Graduate From Heisenberg to Superposition states
- skynelson
- · Replies 6 ·
Graduate Understanding Weinberg's QFT Proof of Annihilation/Creation Operator Sum
- scottbekerham
- · Replies 2 ·