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 How to turn model of Schrödinger's Equation 2D?
- IsaiahvH
- · Replies 6 ·
Undergrad Virtual particles in loop quantum gravity
- JWillis
- · Replies 5 ·
Undergrad Why is the s state spherically symmetric?
- KFC
- · Replies 7 ·
Undergrad Wien's displacement law from Plank's formula
- En Joy
- · Replies 6 ·
Undergrad About precessing directon of angular motion in quantum mechanics
- KFC
- · Replies 4 ·
High School Bell made Simple - Hardy result
- Eye_in_the_Sky
- · Replies 3 ·
High School One single solution for paradoxes
- entropy1
- · Replies 26 ·
High School Where does a quantum experiment *begin*?
- Davor Magdic
- · Replies 244 ·
Undergrad Why are minimum-uncertainty states Gaussian wavefunctions?
- majormuss
- · Replies 3 ·
Undergrad Why does the simple harmonic oscillator trial solution have a 1/2 factor?
- koustav
- · Replies 9 ·
High School QM: Self-Studying vs. University Classes
- kent davidge
- · Replies 1 ·
High School Do photons have mass and how does it affect their existence?
- superkraken
- · Replies 3 ·
Undergrad Can a real electron interact with a virtual positron in perturbative expansion?
- asimov42
- · Replies 19 ·
High School Single Classical-Quantum Physics of Everything?
- ObjectivelyRational
- · Replies 2 ·
High School Can you find a single entangled atom in a haystack.
- BernieM
- · Replies 5 ·
Undergrad Quantum mechanics is random in nature?
- entropy1
- · Replies 190 ·
Undergrad Why do only positive energy eigenfunctions oscillate for a free particle?
- majormuss
- · Replies 7 ·
Undergrad Understanding Complex Coefficients in Quantum Mechanics
- kent davidge
- · Replies 9 ·
Graduate Where does Von Neumann say that consciousness causes collapse
- Giulio Prisco
- · Replies 9 ·
Undergrad Does the Double Slit Experiment Change When We Observe Particle Paths?
- calinvass
- · Replies 5 ·
Graduate Is representation theory worthwhile for quantum?
- Twigg
- · Replies 7 ·
High School Can a Magnetic Field Affect the Path of a Photon?
- kent davidge
- · Replies 3 ·
Undergrad Does macro-object get entangled?
- entropy1
- · Replies 12 ·
Undergrad About quantisation of energy
- Thejas15101998
- · Replies 4 ·
Undergrad Maximally entangled two-qubit Bell states
- kaje
- · Replies 2 ·
Undergrad Selection rules for multiphoton vs single-photon ionization
- phys-student-9
- · Replies 2 ·
Graduate What Are Advanced Dissertation Topics in Quantum Computing?
- FraserAC
- · Replies 4 ·
Undergrad How to discretize the Schrödinger equation with spin
- aaaa202
- · Replies 1 ·
Undergrad Practicality of quantum communications systems
- aquitaine
- · Replies 1 ·
High School Connections with Prime numbers and Quantum Physics?
- HawkI
- · Replies 12 ·
Graduate What is the range of size for quantum effect to happen?
- Tareq Naushad
- · Replies 2 ·
Graduate Observations Helmholtz equation is unable to explain
- Tasell
- · Replies 2 ·
High School Difference between opposite states
- t_r_theta_phi
- · Replies 3 ·
Graduate Did Bohr have a Logical Picture of Wittgenstein?
- Charles Wilson
- · Replies 11 ·
Undergrad Why psi squared instead of psi?
- kent davidge
- · Replies 4 ·
High School Did Schrödinger's equation introduce probability to quantum mechanics?
- Fuinne
- · Replies 2 ·
High School How is the Wave Function Derived in Quantum Mechanics?
- Nipuna Weerasekara
- · Replies 7 ·
Undergrad Why do we require conditions for the Poisson Distribution?
- chi_rho
- · Replies 2 ·
Undergrad Equivalence of SU(2) and O(3) in Ryder's QFT book
- Glenn Rowe
- · Replies 12 ·
High School Quantum eraser and entanglement: alternatives to retrocausality
- whitsona2
- · Replies 3 ·
Undergrad Why is light polarised for the Zeeman effect?
- greswd
- · Replies 12 ·
Undergrad States diagonal in the reference basis
- Plankton
- · Replies 15 ·
Undergrad What happens when excited mercury atoms hit the plate in the Franck-Hertz experiment?
- Helphelphelp
- · Replies 2 ·
Undergrad Building a List of Feynman Diagrams
- woody stanford
- · Replies 3 ·
Undergrad New experiment challenges quantum mechanics
- entropy1
- · Replies 8 ·
High School Position Operator: Mathematically Defined
- Naman Jain Kota
- · Replies 1 ·
High School Quantum view of time versus relativistic view of time
- Jonny Cruz
- · Replies 8 ·
Undergrad Wavelength of a Stationary Particle
- Drakkith
- · Replies 7 ·
Undergrad Quantum superposition from interference?
- exmarine
- · Replies 4 ·
Undergrad Quantum nonlocality in relation to FTL Communication
- Gary0509
- · Replies 8 ·
Graduate How do photons split in spontaneous parametric down-conversion?
- Uriel
- · Replies 10 ·
Undergrad Why are there two different reduced Planck mass formulas?
- Figaro
- · Replies 2 ·
Undergrad How to diagonalize Hamiltonian with Zeeman field
- aaaa202
- · Replies 5 ·
Undergrad Can you explain me the given planks hypothesis better?
- lawrence123456
- · Replies 1 ·
High School Possible Controversial Quantum Topics
- JB321
- · Replies 19 ·
Undergrad Energy associated with matter waves of macroscopic objects
- Heman_s
- · Replies 1 ·
Undergrad Why do Hydrogen bound states span the Hilbert space?
- HomogenousCow
- · Replies 3 ·
High School What does it take to understand quantum mechanics?
- Brandon1989
- · Replies 10 ·
Undergrad What oscillates in matter waves?
- lawrence123456
- · Replies 1 ·
Undergrad Imposition of relativistic constraints on Bell's theorem
- petrushkagoogol
- · Replies 1 ·
Undergrad Can you extract useful work from vacuum energy?
- Kavorka
- · Replies 9 ·
High School Life of free electrons in space
- Tareq Naushad
- · Replies 2 ·
High School Does uncertainty principle apply to photon direction with atomic detector?
- Chris Frisella
- · Replies 8 ·
Undergrad Why can p orbitals hold 8 electrons if the Pauli principle limits 2 per orbital?
- avito009
- · Replies 11 ·
Undergrad What is Quantum Decoherence and How Does it Affect Quantum Systems?
- Katyan Anshuman
- · Replies 1 ·
Graduate Does this experiment truly rule out non-local causality?
- bohm2
- · Replies 13 ·
High School Heisenberg's uncertainty principle and photons
- Comscistudent
- · Replies 6 ·
Graduate How are energy levels and De-Broglie wavelengths related in the Bohr model?
- blackdranzer
- · Replies 2 ·
Graduate Geometric Quantum mechanics -- Worked examples?
- andresB
- · Replies 2 ·
Undergrad Electron configuration vs. Lewis dot structure?
- nehCrM
- · Replies 1 ·
Undergrad Can the 1D Wave Equation Accurately Describe dΨ(x)/dt?
- AleksanderPhy
- · Replies 3 ·
High School From where electron and proton get there charges?
- akashpandey
- · Replies 3 ·
Undergrad Reduced mass effect on gyromagnetic factor
- Khashishi
- · Replies 1 ·
Undergrad Klein-Gordon Equation: Forming a Conservation of Charge
- TimeRip496
- · Replies 5 ·
Graduate Some questions about the Finite Potential Well
- Guaicai
- · Replies 1 ·
High School Are there bosons for the quantum potential field?
- cube137
- · Replies 9 ·
Undergrad How to visualise an instanton?
- mollwollfumble
- · Replies 2 ·
Undergrad What is the role of entropy in particle decay theory?
- ribbie
- · Replies 11 ·
Undergrad How does a single photon camera pixel work?
- woody stanford
- · Replies 5 ·
Graduate Entanglement between nuclei via fission
- looseleaf
- · Replies 10 ·
Graduate How Does the Dirac Spin Exchange Operator Work in Quantum Mechanics?
- MisterX
- · Replies 1 ·
Undergrad Does quantum mechanics obey causality?
- n01
- · Replies 80 ·
High School Quantum communication will allow view the future and past?
- rrguardo
- · Replies 1 ·
Graduate Questions about the Dimensions Analysts changing the equation
- Guaicai
- · Replies 1 ·
High School Shape of elementary particles in QFT, etc?
- icantevenn
- · Replies 41 ·
Undergrad Wavelength of photons exchanged between charged particles
- Sophrosyne
- · Replies 4 ·
Undergrad Why must force-carrying particles be virtual?
- LarryS
- · Replies 9 ·
Undergrad Feedback on my research paper about the Heisenberg Uncertainty Principle
- Chris Hamilton
- · Replies 3 ·
Graduate Is the Quantum State in a Dressed Atom System Pure?
- Chenyb
- · Replies 1 ·
Undergrad Virtual photons [in electrostatic interactions]
- kent davidge
- · Replies 12 ·
Undergrad A few questions about Griffiths book
- Isaac0427
- · Replies 38 ·
Undergrad What's the motivation for bracket notation in QM?
- gulfcoastfella
- · Replies 15 ·
Undergrad Physical eigenstates of systems of n particles of spins sᵢ?
- tomdodd4598
- · Replies 4 ·
Undergrad Does EPR apply to non-commutative variables at one location?
- Adel Makram
- · Replies 39 ·
Undergrad Delayed Choice Black Hole Experiment
- Ontophobe
- · Replies 2 ·
Undergrad What determines which particle escapes in Hawking radiation?
- physics user1
- · Replies 7 ·
Undergrad Do Bob's measurement choices affect Alice's?
- Paul Colby
- · Replies 35 ·
Graduate Commutator of field operator with arbitrary functions
- eudo
- · Replies 2 ·
Undergrad What is the correct explanation of the Casimir force?
- andrew s 1905
- · Replies 49 ·
Undergrad About the time evolution of a wave packet
- KFC
- · Replies 15 ·