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 Is a photon in the form of a wave or a beam?
- filegraphy
- · Replies 7 ·
High School Introduction to Quantum Physics: Spin
- Nero-53
- · Replies 2 ·
Graduate Quantum mechanics momentum operator
- mohammed.omar
- · Replies 6 ·
Graduate Dimensional analysis of the london penetration depth
- phja
- · Replies 1 ·
Graduate Expressing wave-particle duality with Fourier series
- nshrikhande
- · Replies 28 ·
Graduate How does reflection work at the quantum level?
- boderam
- · Replies 2 ·
Graduate Does the choice of Dirac matrices affect solutions to the Dirac equation?
- paweld
- · Replies 4 ·
Undergrad What do Bosons travel through?
- jaketodd
- · Replies 8 ·
Graduate Is the hamiltonian in the coordinate representation always diagonal?
- zedya
- · Replies 6 ·
Graduate A wave that can only be detected in one location
- LostConjugate
- · Replies 21 ·
Graduate Prior interaction as an unwarranted assumption of EPR
- glengarry
- · Replies 4 ·
High School Name a bunch of famous physics paradoxes
- libbon
- · Replies 4 ·
Graduate Could quantum teleportation be used to teleport humans?
- hammertime
- · Replies 28 ·
Graduate Hund's rule and angular momentum coupling
- daudaudaudau
- · Replies 2 ·
Graduate Gravitationally amplified quantum fluctuations
- gendou2
- · Replies 3 ·
Graduate Conjugate momentum in the hamiltonian
- moobox
- · Replies 2 ·
Share Your Thoughts: An Idea to Consider
- filegraphy
- · Replies 5 ·
Graduate Toy model, contextual particles/non-contextual ensemble
- zonde
- · Replies 2 ·
Graduate Perturbation theory and total derivatives
- ansgar
- · Replies 2 ·
High School What is the equipartition problem in classical physics?
- fsoica
- · Replies 3 ·
Undergrad Converting LED candela to microEinstein per second
- taupune
- · Replies 1 ·
Graduate What is a wave function and its collapse?
- Kathryn0505
- · Replies 21 ·
Graduate Measurement problem -basic definition.
- Dav333
- · Replies 1 ·
Graduate Does the graviton move at the speed of light in any reference frame?
- jaketodd
- · Replies 4 ·
Graduate Can Quantum Physics be weaponized?
- Researcher X
- · Replies 36 ·
Graduate Why is h-bar rather than h used in Planck units?
- diagopod
- · Replies 5 ·
Graduate What does dissipation mean in Seth Lloyd's 1993 quantum computer paper?
- DanSandberg
- · Replies 8 ·
Graduate Domains for relativity vs quantum mechanics
- buddhakan
- · Replies 4 ·
Graduate Understanding Spin Wavefunctions and the Confusion Surrounding Spin 3/2 States
- barnflakes
- · Replies 5 ·
Graduate Uncertainty Principle as impossibility of simultaneity
- hollowsolid
- · Replies 5 ·
Graduate Quantum Fluctuations and Curved Space
- sanman
- · Replies 1 ·
Graduate Delayed Choice Experiment - A thought.
- hankaaron
- · Replies 2 ·
Graduate Is Instant Data Travel Possible Through Quantum Teleportation?
- Jonnyb42
- · Replies 3 ·
Graduate Could heat in motors be minimized when driven with quasiparticles?
- kmarinas86
- · Replies 1 ·
Graduate Wavelength limits of Planck's Law
- Math Jeans
- · Replies 2 ·
Graduate Quantum Immortality: Can Experiments Test Theory Without Risk?
- physAK
- · Replies 1 ·
Graduate Why does the Hartree product not reflect fermion antisymmetry?
- cotyledon
- · Replies 1 ·
Graduate Solving Projector Question on Mixed States
- raisin_raisin
- · Replies 3 ·
Graduate Entanglement and communication speed
- mcjosep
- · Replies 2 ·
Graduate Matrix or differential operator?
- 1Kris
- · Replies 7 ·
Graduate Can photons interact with each other directly?
- DrZoidberg
- · Replies 34 ·
Graduate Can Quantum Mechanics Allow for a Particle's Absolute Sharp Position?
- japrufrock
- · Replies 25 ·
Graduate How does causality emerge from randomness in quantum mechanics?
- ConradDJ
- · Replies 11 ·
Graduate The misterious 'inverted' harmonic oscillator
- zetafunction
- · Replies 1 ·
Graduate Entanglement possible through a higher dimension.
- zeebregts
- · Replies 3 ·
Graduate Wilsonian EFTs and regularization
- metroplex021
- · Replies 3 ·
Graduate Quantum teleportation-is it real?
- jobsism
- · Replies 5 ·
Graduate Understanding Amplitudes for Photon Speed in Feynman's QED
- DanP
- · Replies 16 ·
Graduate What is the Relationship Between Magnetization and Ionization in Neutral Atoms?
- mordechai9
- · Replies 3 ·
Graduate Why does QED predict specular reflection instead of diffuse scattering?
- DanP
- · Replies 2 ·
Graduate Definition of Thermal State of Scalar Field in QFT
- paweld
- · Replies 2 ·
Undergrad Understanding Atom Orbits: Calculating Lost Energy
- Bjarne
- · Replies 1 ·
Graduate Vibrational Vs dissociation energies for diatomic molecules
- EnSlavingBlair
- · Replies 1 ·
Graduate What is the Repulsive Casimir Force?
- DukeLuke
- · Replies 1 ·
Graduate Unstoppable Force, Immovable Object
- PipBoy
- · Replies 1 ·
Graduate Explanation of entropy only takes into account positions?
- dhruv8890
- · Replies 1 ·
High School Why do metals reflect light while individual atoms don't?
- pratik2403
- · Replies 1 ·
Graduate How Do Fermi and Bose Statistics Explain Particle Behavior in Quantum Mechanics?
- jostpuur
- · Replies 5 ·
Graduate Is the particle able to penetrate finite barrier?
- J.Asher
- · Replies 4 ·
Graduate What is a probability amplitude?
- ideogram
- · Replies 5 ·
Graduate Can information be transfered via entaglement?
- Viral Titan
- · Replies 2 ·
Undergrad Do Atoms Literally Behave as Waves?
- cj2222
- · Replies 32 ·
Graduate What is residual Coulomb interaction and why does it exist?
- Sonko
- · Replies 1 ·
Graduate Can a computer be an observer?
- Karl Coryat
- · Replies 71 ·
Graduate How do we measure particle momentum?
- pellman
- · Replies 7 ·
Graduate In a quantum fluid, we know that it is difficult to add or destroy a
- stephenhky
- · Replies 3 ·
Graduate Physical mass in MS scheme and LSZ formula correction in Srednicki CH27
- LAHLH
- · Replies 1 ·
Graduate Dual Light Sources in Dual-Slit Experiment?
- albert cipria
- · Replies 2 ·
Graduate Visualization of entanglement when relative speeds differ greatly
- Kyanzes
- · Replies 3 ·
Graduate Does Electric Charge Have a Definite Value or Does Uncertainty Apply?
- computerphys
- · Replies 10 ·
Undergrad Basic conceptual/intuitive question on molecular vibrations and rotations.
- Animastryfe
- · Replies 1 ·
Graduate What is the Scale Dependence of Coupling Constants in QFT?
- PJK
- · Replies 2 ·
Graduate What does it mean to observe a virtual particle?
- azneternity
- · Replies 2 ·
Undergrad How Much Radiation is Harmful?
- libbon
- · Replies 1 ·
Graduate What is the origin of the strong red line in the sodium emission spectrum?
- Einstein2nd
- · Replies 31 ·
Graduate Normalization of wave function .
- zodas
- · Replies 1 ·
Graduate What would happen if the uncertainty principle was false?
- haael
- · Replies 3 ·
Graduate Photons from separated sources can be entangled - after they were detected
- DrChinese
- · Replies 144 ·
Graduate Is the Wave Function Real? Evidence from the Frankenstein Photon Experiment
- DrChinese
- · Replies 78 ·
Graduate Eigenvalue of momentum for particle in a box
- feynmann
- · Replies 12 ·
Graduate Two-slit experiment and The Truth
- GreatBigBore
- · Replies 35 ·
Graduate Can Quantum Waves Really Have Mass?
- Hoku
- · Replies 32 ·
Graduate How is Compton scattering calculated without using quantum field theory?
- huuha
- · Replies 1 ·
High School Why are some photons reflected and others transmitted through glass?
- skydivephil
- · Replies 3 ·
Undergrad Why does neutral fluorine so reactive?
- idea2000
- · Replies 8 ·
Graduate Photoelectric effect, discrete values of the tangent
- LostConjugate
- · Replies 1 ·
Graduate Deriving Srednicki equation 26.7 for phase space measure
- LAHLH
- · Replies 5 ·
Graduate How do you determine degeneracy for different quantum systems?
- Void123
- · Replies 2 ·
Graduate Momentum in an Infinite Square Well
- Identity
- · Replies 7 ·
Graduate Do black holes agree with the pauli exclusion?
- LostConjugate
- · Replies 13 ·
Graduate Quantum Entanglement (A source saying QE exceeds the Speed of Light)
- Atran
- · Replies 3 ·
Graduate Particle Spin, Isospin, weak Isospin
- billbray
- · Replies 2 ·
Graduate An Idea I've been Thinking of
- prodygi
- · Replies 7 ·
Graduate Consequences of Hardy's paradox and joint weak measurement
- analogdigital
- · Replies 17 ·
Graduate Dirac equation in curvilinear coordinates
- paweld
- · Replies 1 ·
Graduate The action principle in quantum theory
- Dyson
- · Replies 2 ·
Graduate Fermi's Golden Rule (Decay Amplitude)
- getPhysical()
- · Replies 1 ·
Graduate Young experiment in gravity field
- helix
- · Replies 4 ·
Graduate Why does curved surface geometry determine light reflection at the quantum scale?
- madhatter106
- · Replies 1 ·
Graduate How do you measure σ_x and get an eigenstate rather than a number?
- barnflakes
- · Replies 4 ·