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.
Threads
Graduate Can Entropy of Two-Level Particles Predict Fringe Visibility?
- Heidi
- · Replies 2 ·
Graduate Where did this term in the path integral come from?
- PORFIRIO I
- · Replies 1 ·
High School Actions of subatomic particles while under observation
- Physics4gangsters
- · Replies 7 ·
Undergrad Why use complex conjugate when multiplying different wave functions
- Icycub
- · Replies 14 ·
Undergrad 2-photon interference question
- Killtech
- · Replies 76 ·
High School Could Quantum Fluctuations exist W/out the presence of Spacetime?
- Vanilla Gorilla
- · Replies 6 ·
Undergrad Q re a photon ionizing a hydrogen atom
- Buzz Bloom
- · Replies 1 ·
Undergrad Quantum Measurements with Gravitational Waves
- lightarrow
- · Replies 48 ·
High School Regarding the coherence of a photon pair decaying from Higgs
- DarkMattrHole
- · Replies 2 ·
Graduate Spin-orbital combination and the exclusion principle
- hokhani
- · Replies 18 ·
Graduate Effective Action for Scalar and Fermion Fields
- The black vegetable
- · Replies 4 ·
Undergrad Understanding Matrix Mechanics in Quantum Mechanics
- Jamister
- · Replies 8 ·
High School Can a Thought Experiment with Dice Challenge Bell Inequalities?
- Johan0001
- · Replies 25 ·
Undergrad Why can't we interprete /x> in relativistic QFT as position eigenfunc?
- fxdung
- · Replies 2 ·
High School How long before someone builds a machine to predict the future?
- Quarinteen
- · Replies 21 ·
Undergrad Understanding how to reduce density matrices
- JD_PM
- · Replies 6 ·
Graduate Why does a photon have a defined frequency but is also somewhat localized?
- QuasarBoy543298
- · Replies 4 ·
High School Are Bohr's postulates the same as the Bohr-Bury scheme?
- JackFyre
- · Replies 3 ·
Undergrad Is this something like a Wick rotation?
- Heidi
- · Replies 23 ·
Undergrad What generates black-body photons?
- persab
- · Replies 6 ·
Undergrad Minimize grand potential functional for density matrix
- dRic2
- · Replies 1 ·
Undergrad Asking about Nuclear Magnetic Resonance
- docnet
- · Replies 7 ·
Undergrad Is there a way to translate a particle's spin into regular motion?
- Vanilla Gorilla
- · Replies 38 ·
Graduate Softened potential well / potential step
- hilbert2
- · Replies 5 ·
High School How does a wave collapse not violate the speed of light?
- TheCelt
- · Replies 3 ·
High School Time Crystals & Spin: Engineering a New Reality?
- Vanilla Gorilla
- · Replies 1 ·
Graduate Is there a vibration energy term associated with mesons?
- Pedro de la Torre
- · Replies 1 ·
Graduate Getting particle/antiparticle solutions from the Dirac Equation
- peguerosdc
- · Replies 6 ·
Undergrad Would Black Holes Be Coherent Under Quantum Mechanics?
- Vanilla Gorilla
- · Replies 3 ·
Graduate Finding the probability of making a measurement E1
- Vitani1
- · Replies 17 ·
Undergrad Properties of a unitary matrix
- JHansen
- · Replies 3 ·
Graduate Is the orthocomplement lattice of Hilbert space subspaces atomistic?
- forkosh
- · Replies 1 ·
Undergrad What is the effect of a magnetic field on an atom's magnetic moment?
- Malamala
- · Replies 19 ·
Undergrad The significance of the Dirac notation
- entropy1
- · Replies 100 ·
Undergrad Energy operator in Quantum Mechanics
- Mayan Fung
- · Replies 13 ·
Undergrad Is quantum entanglement just like ordering Schrodinger's Slice pizza?
- Wallace
- · Replies 8 ·
Graduate Wolfram Schommers Projection theory
- Keth
- · Replies 8 ·
Graduate Matrices from Spherical Harmonics with Eigenvalue l+1
- paklin2
- · Replies 14 ·
Undergrad What does an uncertainity of 0 mean?
- CrosisBH
- · Replies 4 ·
Graduate Suggested reading for quantum information applications in QFT
- DrEadgbe
- · Replies 2 ·
Undergrad Extraction of a particular quantum state from a quantum circuit
- ubergewehr273
- · Replies 7 ·
High School Do opposite-axis spin operators simultaneously determine eigenvalues?
- etotheipi
- · Replies 7 ·
High School Wave-Particle Duality Controlled by Single-Photon Self-Entanglement
- Lord Crc
- · Replies 13 ·
High School Does the energy 6.626x10^-34J have any special meaning?
- qnt200
- · Replies 26 ·
Graduate Representation of Z2 acting on wavefunctions
- QFT1995
- · Replies 3 ·
Undergrad Is the wave function a vector or a scalar?
- lightarrow
- · Replies 11 ·
Undergrad Measurement of an entangled Particles in two Different Bases
- randomuser3210
- · Replies 1 ·
High School What is the pattern in a double slit experiment near the slits?
- Heidi
- · Replies 16 ·
Undergrad How to find the photon's path?
- jk22
- · Replies 8 ·
High School Does an electron have kinetic energy when attached to a proton?
- Lolicon
- · Replies 8 ·
High School What does the unit "Js" of the Planck constant mean?
- Fouzan Alaa Almassry
- · Replies 9 ·
Graduate Heisenberg equations of Klein-Gordon Field in Space-Time
- Haorong Wu
- · Replies 41 ·
Undergrad Does intrinsic (e.g., spin) imply elementary (irreducible)?
- nomadreid
- · Replies 9 ·
High School How do photons and other particles gain or lose energy?
- lazarericus
- · Replies 8 ·
High School Quantum Entanglement Communication Radio
- pavqw
- · Replies 1 ·
Undergrad What is the paradox in the EPR paradox?
- bksree
- · Replies 2 ·
Undergrad What does uncertainty mean in Heisenberg's uncertainty principle?
- peguerosdc
- · Replies 10 ·
High School How does the electric field of an electron compare to its probability wave?
- DarkMattrHole
- · Replies 5 ·
Graduate Understanding Cartan subalgebra applied to the n-harmonic oscillator
- JD_PM
- · Replies 6 ·
Graduate Discussing the mathematical formalism of generators (Lorentz Group)
- JD_PM
- · Replies 31 ·
High School How to differentiate b/w two collapsed values in Bell States
- randomuser3210
- · Replies 12 ·
Graduate Trying to make sense of the double slit "experiment"
- Claude
- · Replies 5 ·
Undergrad QED - ordering of Feynman diagram rules
- tomdodd4598
- · Replies 6 ·
Undergrad Measuring Entangled Particles in two different Basis
- randomuser3210
- · Replies 8 ·
Undergrad A query regarding Rotational Invariance
- Student149
- · Replies 29 ·
Undergrad Did anyone create an antihydrogen beam to test if antimatter reverses time?
- LightningInAJar
- · Replies 9 ·
Undergrad Possible paradox in the uncertainty principle?
- PreposterousUniverse
- · Replies 16 ·
High School Simulators for Quantum Mechanics
- wolfy
- · Replies 2 ·
Undergrad A query regarding Spin Entanglement Measurement
- Student149
- · Replies 12 ·
High School Can spontaneous emission be considered a thermodynamic process?
- Karl Coryat
- · Replies 4 ·
Undergrad Stern-Gerlach w. normal distribution if magnets were more separated?
- ndvcxk123
- · Replies 5 ·
High School When the wave function collapses, how long is it collasped?
- wolfy
- · Replies 14 ·
Undergrad Is wavefunction collapse the same as zero variance of an observable?
- PORFIRIO I
- · Replies 2 ·
Undergrad Has this photon experiment ever been done?
- iamcj
- · Replies 4 ·
Undergrad Second-order perturbation theory with parity-odd Hamiltonian
- Malamala
- · Replies 3 ·
High School A few basic questions about the absorption/emission of photons
- Hiero
- · Replies 4 ·
Undergrad Two slit experiment with different sized slits
- Cato
- · Replies 2 ·
High School When are particles in a superposition of states?
- AidenPearce
- · Replies 2 ·
Undergrad Maxwell's Demon and the Uncertainty Principle
- iVenky
- · Replies 6 ·
Undergrad Are photons and light waves equivalent?
- thaiqi
- · Replies 7 ·
Graduate Boundary conditions of eigenfunctions with Yukawa potential
- Riccardo Marinelli
- · Replies 2 ·
Graduate Invariance of discrete Spectrum with respect a Darboux transformation
- QuantumDuality
- · Replies 1 ·
Undergrad Physics from Symmetry: Highly recommended for learning QM
- bhobba
- · Replies 48 ·
Undergrad I don't understand about infinitesimal translation
- Another
- · Replies 4 ·
Undergrad Does vacuum excitation violate the conservation of energy?
- Haorong Wu
- · Replies 7 ·
Undergrad Entanglement of Electrons Through Experiments: What's Possible?
- DarkMattrHole
- · Replies 1 ·
Undergrad What are time crystals and how do they differ from regular crystals?
- Hsopitalist
- · Replies 7 ·
Undergrad Is the small world uncertain, or is that just our perception?
- bt101
- · Replies 13 ·
Undergrad Measurement of Entangled Particles causes up or down spin?
- CarawayBlossom
- · Replies 3 ·
High School Time-reversal of an unknown quantum state
- allisrelative
- · Replies 1 ·
Undergrad Superposition of large objects
- entropy1
- · Replies 26 ·
Undergrad Microscopic and macroscopic physics
- iVenky
- · Replies 2 ·
Undergrad Photon Momentum: The Impact of Light on Movement in Space
- Ebi
- · Replies 3 ·
High School Speed of electrons in a 2-slit experiment
- jeremyfiennes
- · Replies 9 ·
Undergrad Confused about the AC Stark effect
- BillKet
- · Replies 5 ·
Undergrad Are Coin Flips Truly Random Like Quantum Systems?
- Isaac0427
- · Replies 3 ·
Undergrad What Do Phase Space Path Integrals Compute?
- Intrastellar
- · Replies 6 ·
Undergrad Condtion on transformation to solve the Dirac equation
- Markus Kahn
- · Replies 5 ·
High School Do photons, phonons and electrons have mass?
- SSG-E
- · Replies 60 ·
Graduate There is a high concentration of introductory material on wave-particle duality
- cdux
- · Replies 2 ·