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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Graduate What Are Eigenfunctions and Superpositions in Quantum Measurement?
- jdstokes
- · Replies 3 ·
Graduate Why Does the Measurement Problem Terrify Physicists?
- tommyburgey
- · Replies 50 ·
Graduate Calculating the Stern Gerlach Angle in Magnetic Fields
- pivoxa15
- · Replies 3 ·
Graduate Can wave function interference create unlimited energy?
- The Onion
- · Replies 11 ·
Graduate How small can we see with a STEM?
- jobyts
- · Replies 5 ·
Graduate Is Acceleration Quantization Valid in Quantum Mechanics?
- Sangoku
- · Replies 2 ·
Graduate Path integral in momentum representation
- jostpuur
- · Replies 22 ·
Graduate Are spinors just wavefunctions in the dirac field?
- captain
- · Replies 6 ·
Graduate Do atoms need magnetic and electric fields in quantum mechanics?
- pivoxa15
- · Replies 3 ·
Graduate Angular Momentum of 0 for Electrons in Ground Energy State
- pivoxa15
- · Replies 7 ·
Graduate Wave particle duality again(photons)
- madness
- · Replies 14 ·
Graduate Temporal overlap of light beams
- scarecrow
- · Replies 4 ·
Graduate QED Confinement: Will Charge be Confined if Alpha is Larger?
- carroza
- · Replies 3 ·
Graduate What Force Causes Electron Repulsion in the 1s State?
- pivoxa15
- · Replies 10 ·
Graduate Using BEC to Propel a Solar Sail - What Do You Think?
- Yum Yum
- · Replies 3 ·
Graduate Gauge Transformations and (Generalized) Bogoliubov Transformations.
- strangerep
- · Replies 8 ·
Graduate Spin angular momentum operators
- ehrenfest
- · Replies 5 ·
Graduate Time-Dependent Schrodinger Eq: Integrating Time?
- Pythagorean
- · Replies 1 ·
Graduate Scalar field and spin 1/2 field
- captain
- · Replies 7 ·
Graduate 2 dimensional quantum mechanical situation
- captain
- · Replies 1 ·
Graduate Nuclear Gravitation Field Theory
- Jade Falcon
- · Replies 6 ·
High School How are photons created when you light a match?
- DanielS
- · Replies 13 ·
Graduate Is the wave function the energy eigenfunction of a system?
- Shalini
- · Replies 2 ·
Graduate Does the Klein-Gordon field have a wave functional over field configurations?
- jostpuur
- · Replies 17 ·
Graduate Why Do Textbooks Use Different Signs in Gauge Covariant Derivative Notations?
- captain
- · Replies 1 ·
Graduate Do beam splitters after double slits destroy interference?
- prunthaban
- · Replies 25 ·
What do we mena by energy barrer
- nishu1988
- · Replies 1 ·
Graduate Renormalization group and cut-off
- Sangoku
- · Replies 1 ·
Graduate Can 4 Momentum be an Operator?
- captain
- · Replies 5 ·
Graduate Hamiltonian Symmetry: Implications for Negative Energies and Potential
- Sangoku
- · Replies 2 ·
Graduate (How) is a single photon polarized?
- Richard J
- · Replies 6 ·
Graduate Explaining Quantum Spin Without Math: Is It Possible?
- Hoof47
- · Replies 49 ·
Graduate Symmetric Potential: Reasons for Eigenstate Solutions
- jostpuur
- · Replies 1 ·
Graduate Rewriting a wave function superposition
- T-7
- · Replies 2 ·
High School Does a photon go in all directions when emitted?
- alvaros
- · Replies 244 ·
Graduate Thoughts about ∣Φ>=∣1>*C1+∣2>*C2
- orange juice
- · Replies 4 ·
Graduate What is the canonical commutation relation in quantum mechanics?
- ice109
- · Replies 5 ·
Graduate What Is the Difference Between Albenian and Nonalbenian in Quantum Field Theory?
- captain
- · Replies 3 ·
Graduate Why is the Fourier Transform in QFT Divided by (2pi)?
- captain
- · Replies 11 ·
Graduate What is the relationship between mass and energy for photons?
- Seele
- · Replies 16 ·
Graduate Renormalization and divergent integrals.
- Klaus_Hoffmann
- · Replies 5 ·
Graduate Wave-particle duality and observation in quantum mechanics
- drews
- · Replies 5 ·
Graduate Schrodinger's Equation: Reason for Acceptance?
- captain
- · Replies 8 ·
Graduate Can varying Planck's constant create intermediate quantum-classical states?
- Loren Booda
- · Replies 2 ·
High School Why electrons create an interference pattern in the double slit experiment
- game45165
- · Replies 2 ·
Graduate What are the allowed energies for a quantum harmonic oscillator?
- Moham1287
- · Replies 6 ·
Graduate Does the Correspondence Principle Apply to All Quantum Systems?
- maverick280857
- · Replies 3 ·
Graduate Could undetectable waves carry electrons through both slits?
- sadie
- · Replies 1 ·
Graduate Does Quantum Physics Affect the Cardiovascular System?
- Identity
- · Replies 6 ·
Graduate Dirac's quantization condition and magnetic monopoles
- vincentryan
- · Replies 3 ·
Graduate Probability or Impossibility in QM?
- dkgolfer16
- · Replies 27 ·
Graduate Understanding interference and decoherence
- Talisman
- · Replies 1 ·
Graduate Casimir effect - Does it fit? Or NOT?
- eemaestro
- · Replies 3 ·
Graduate What is the meaning of canonical in quantum mechanics?
- captain
- · Replies 4 ·
Graduate Why does a wave packet form and what is its wave-number spectrum?
- hanson
- · Replies 5 ·
Graduate Can Sub-Atomic Particles Exist in an Unseen Dimension?
- brianthewhitie7
- · Replies 7 ·
Graduate Haag's Theorem, Perturbation, Existence and QFT.
- Son Goku
- · Replies 39 ·
Graduate Slow variables in Nonlinear Schrodinger Equation
- hanson
- · Replies 2 ·
Graduate Can the fabric of space-time transform into virtual particles?
- Nick666
- · Replies 8 ·
Graduate Fourier transform formulation of the dirac delta
- ehrenfest
- · Replies 1 ·
Graduate Can quantum loops solve the particle-in-potential problem?
- Klaus_Hoffmann
- · Replies 4 ·
Graduate Learning about Klein's paradox
- plxmny
- · Replies 7 ·
Graduate Weak measurements? Modified Double slit
- Mephisto
- · Replies 24 ·
Undergrad What does the negative sign mean in the work function calculation for lead?
- Physicist
- · Replies 2 ·
Graduate I've found a way to see electrons (?)
- hrishikesh
- · Replies 3 ·
Undergrad Photodetection Theory: Photo-Oltaic, Photo-Emissive, Photo-Conductive
- DaTario
- · Replies 6 ·
Graduate How do heat, zero point energy and the uncertainty principle relate?
- jackle
- · Replies 4 ·
Graduate What is the velocity of an orbiting electron in an atom?
- Maalolan
- · Replies 1 ·
Graduate Quantum tic-tac-toe and event horizons
- melrose
- · Replies 5 ·
Graduate On Heisenberg Principle - ParticleWave Hybrid
- Llewlyn
- · Replies 1 ·
Graduate Do photons have a small electric charge?
- ArielGenesis
- · Replies 3 ·
Graduate Why doesn't QM make particles zig-zag as they travel?
- vpoko
- · Replies 43 ·
Graduate Is Filming Free Electron Motion in Superfluid Helium Possible?
- Proof.Beh
- · Replies 5 ·
Graduate Quantum optical application of Pascal Principle
- DaTario
- · Replies 2 ·
Graduate Modified Mach-Zehnder Interferometer
- birulami
- · Replies 2 ·
Graduate Are Solitons the Only Type of Waves in Wave Equations?
- Klaus_Hoffmann
- · Replies 7 ·
Graduate Fourier Integral involving a position operator
- maverick280857
- · Replies 27 ·
Graduate How make a confront between energy levels?
- ClubDogo
- · Replies 1 ·
Graduate What is the Concept of a Fractional Dimension Probability Sphere?
- bchui
- · Replies 2 ·
Is a Website a Reliable Source for Random Bits?
- rohanprabhu
- · Replies 3 ·
Undergrad In the formula E=nhf for a photon, what is n ?
- physgirl
- · Replies 3 ·
Graduate What Are Quantum Gates and How Do They Relate to Nuclear Spin?
- quasinerd
- · Replies 1 ·
Graduate Conditions for entanglement to exist
- neorich
- · Replies 5 ·
Graduate Why adj( U(t)) * U(t) = I where U(t) is a propagator in QM?
- ehrenfest
- · Replies 4 ·
Graduate Can path integrals allow particles to exceed the speed of light?
- touqra
- · Replies 3 ·
Graduate The temperature is also quantized?
- maris205
- · Replies 2 ·
Graduate Euler-Lagrange equations in QFT?
- Sunset
- · Replies 11 ·
Graduate Does frequency make sense in terms of one particle?
- vpoko
- · Replies 5 ·
Graduate Electromagnetic field vs. photon(s)
- birulami
- · Replies 5 ·
Graduate Does quantum teleportation preserve personal identity?
- Liger20
- · Replies 22 ·
Graduate When can equations of motion be derived from an action principle?
- smallphi
- · Replies 40 ·
Graduate How do you define and fire a single photon in double slit experiments?
- Phymath
- · Replies 5 ·
Graduate Does Supersymmetry Breaking Compromise Poincare Invariance?
- alphaone
- · Replies 7 ·
Graduate Which formula for the energy of the first orbital of hydrogen is correct?
- physgirl
- · Replies 7 ·
Graduate Why does the propagator equation involve an integral over space?
- ehrenfest
- · Replies 9 ·
Graduate What does it mean that a wave packet has an uncertainty
- ehrenfest
- · Replies 5 ·
High School Does an electron gain velocity when it drops to a lower energy level in an atom?
- Brock
- · Replies 12 ·
Graduate Are Entangled Photons the Same Particle?
- freerangequark
- · Replies 2 ·
Graduate What is the Definition of Measurement in Quantum Physics?
- madness
- · Replies 24 ·
Graduate Can Virtual Particle Annihilation in the Dirac Sea Generate Detectable Light?
- saderlius
- · Replies 13 ·