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 Eigenvalues for X’s Pauli's matrix
- USeptim
- · Replies 2 ·
Undergrad Symmetry and symmetry breaking
- vikram_n
- · Replies 4 ·
Graduate Wave properties of an electron
- physics kiddy
- · Replies 3 ·
Graduate Question on Decoherence and the Delayed Choice Quantum Eraser
- dtdynd
- · Replies 2 ·
Graduate How Do Spin and Symmetry Relate in Particle Physics and SUSY?
- friend
- · Replies 8 ·
Graduate Undergrad w/o formal quantum introduction, having trouble
- agm2010
- · Replies 1 ·
Graduate Total energy vs. energy in a finite region
- giova7_89
- · Replies 2 ·
Graduate Effective field theories, eliminating fields using equations of motion
- rgoerke
- · Replies 3 ·
Undergrad Different formulas, same physics?
- nonequilibrium
- · Replies 8 ·
Graduate Wiegner Eckart theorem, I don't understand it
- Jamalll
- · Replies 3 ·
Graduate Parity switching wave functions for a parity invariant hamiltonian?
- VortexLattice
- · Replies 2 ·
Graduate Is Braket Operation Legal? Elaborate Here
- intervoxel
- · Replies 3 ·
Graduate Isn't all action, spooky action at a distance
- g.lemaitre
- · Replies 15 ·
Graduate What we know about the foundations of Quantum Mechanics?
- Ezio
- · Replies 2 ·
Graduate Is a slit automatically also a detector?
- friend
- · Replies 8 ·
Graduate What are the implications of this experiment?
- StevieTNZ
- · Replies 270 ·
Graduate Zero Point Energy: Harmonic Oscillator vs Rigid Rotator
- Useful nucleus
- · Replies 5 ·
Graduate I am not sure to put this in this secton or computer section
- billa12
- · Replies 2 ·
Graduate Does any field, other than gravity, bend space-time?
- San K
- · Replies 10 ·
Graduate Identical fermions in a box - degenerate states
- dipole
- · Replies 4 ·
Graduate Coherent vs incoherent superposition and probability calculation
- KFC
- · Replies 5 ·
Graduate Entangled photons with perpendicular polarizers: why don't both bells ring?
- JollyOlly
- · Replies 10 ·
Graduate Do Bloch modes in cylindrical rod arrays account for single waveguide modes?
- jxwlhs
- · Replies 1 ·
Graduate Normalization of Radial wavefunction of hydrogen atom
- Arafat Sagar
- · Replies 4 ·
Graduate Covariant Notation: Understanding Its Basics and Applications
- help1please
- · Replies 1 ·
Graduate Velocity Distribution function of molecule at low temperature
- aihaike
- · Replies 3 ·
Graduate Quantum Nonlocality and Causation
- rkn
- · Replies 1 ·
Graduate What is the minimum level of energy in quantum physics and who determined it?
- balulu
- · Replies 5 ·
Graduate Find units of transition dipole moment
- sshrestha
- · Replies 1 ·
Graduate Velocity distribution from position measurements and momentum
- bob900
- · Replies 5 ·
Graduate Source of Casimir effect energy
- gildomar
- · Replies 18 ·
Graduate I can't visualize spin I know that its not just a particle rotating
- Ezio3.1415
- · Replies 6 ·
Graduate Necessity of Bell's experiment
- guillefix
- · Replies 7 ·
Graduate Average Randomness Thought experiment
- ImaBeast
- · Replies 4 ·
Graduate Is there a consensus on Bell's Theorem and its implications?
- CAF123
- · Replies 16 ·
Graduate Role of hermitian and unitary operators in QM
- Inam
- · Replies 2 ·
Graduate Delayed detection in double slit experiments and retrocausality
- friend
- · Replies 9 ·
Graduate New and have a few initial questions.
- Rcbs
- · Replies 21 ·
Graduate Energy quantization and allowed frequency values
- jsicolo
- · Replies 5 ·
Graduate The Role of Eigenvectors and Eigenvalues in Quantum Mechanics
- MadRocketSci2
- · Replies 6 ·
Graduate Polarization four-vector in electron-positron to muon pair production
- ianhoolihan
- · Replies 12 ·
Graduate High energy particles and uncertainty
- Lapidus
- · Replies 1 ·
Undergrad Combining light beams question
- jimgraber
- · Replies 2 ·
Graduate Which order do you take derivative of delta function?
- geoduck
- · Replies 1 ·
Graduate Why Does Bell's Calculation Yield a Negative Cosine?
- Adam Lewis
- · Replies 1 ·
Graduate Interesting New FQXi Contest Essay re: Signal Causality
- nikman
- · Replies 1 ·
Graduate Why cant a particle go through one slit but behave as if it went through both?
- scrappykoala
- · Replies 17 ·
Graduate Help with the Schrödinger Equation.
- 96hicksy
- · Replies 14 ·
Graduate Why do atoms want a full outer shell in quantum mechanics?
- epsilonjon
- · Replies 2 ·
Graduate Degenerate states and wavefunction collapse
- VantagePoint72
- · Replies 9 ·
Graduate Does the Nucleus Have a Wave Function?
- calvinjhfeng
- · Replies 3 ·
Graduate Why do we consider the evolution (usually in time) of a wave function ?
- rajesh_d
- · Replies 2 ·
Graduate Why is the Braid Group Infinite?
- gioialorusso
- · Replies 1 ·
Graduate Classifying electron orbitals by nodes
- tiny-tim
- · Replies 4 ·
Graduate De Sitter Space and Virtual Particles
- JPBenowitz
- · Replies 1 ·
Graduate Quantum numbers for particles in a box
- Aero51
- · Replies 9 ·
Graduate Spin 1/2-Raising and Lowering operators question
- tjny699
- · Replies 9 ·
Graduate Calculating the frequency of the fundamental vibrational mode
- mycotheology
- · Replies 1 ·
Graduate Quantum Harmonic Oscillator Complete System
- YAHA
- · Replies 1 ·
Graduate Propagator for inverted harmonic potential.
- FedEx
- · Replies 1 ·
Graduate Schrodinger's Cat- Cat variations causing loopholes in the paradox?
- Drake Wolfe
- · Replies 5 ·
Graduate How are correlation functions defined for non-uniform operator theories?
- UndeadCat
- · Replies 2 ·
Graduate Properties of derivatives of a wavefunction?
- Torboll1
- · Replies 1 ·
Undergrad What are the shapes of atomic orbitals
- shivamdabas
- · Replies 15 ·
Graduate Dirac Matrix Property? Possible Book mistake?
- silence11
- · Replies 7 ·
Graduate What is the Meaning of Expectation and Deviation of an Operator?
- esornep
- · Replies 5 ·
Graduate Square integrable functions - Hilbert space and light on Dirac Notation
- esornep
- · Replies 4 ·
Graduate Faster than Light Information Sending Solved?
- anthony.zeedy
- · Replies 23 ·
Graduate Can Coherence Be Restored in Quantum Systems?
- San K
- · Replies 9 ·
Graduate How Does Quantum Entanglement Create Spooky Action at a Distance?
- rkn
- · Replies 22 ·
Graduate Wave Function Collapse and Bayesian Probabilty
- unchained1978
- · Replies 5 ·
Graduate Spherical Tensor operators for half-integers
- jfy4
- · Replies 4 ·
Graduate Why do we use Gauge Theories to describe local conservation of charge?
- the_pulp
- · Replies 5 ·
Graduate The Lagrangian formalism of Quantum Field Theory
- S_klogW
- · Replies 8 ·
Graduate Quantum algorithms on Graphs VS Quantum Graphs
- fedonman
- · Replies 4 ·
Graduate If photon speed is constant, how does its momentum vary with frequency?
- Super Kirei
- · Replies 19 ·
Graduate Matrix operators Dirac notation
- Master J
- · Replies 2 ·
Graduate Sanity check: Kitaev's quantum computing book
- Physics Monkey
- · Replies 3 ·
Graduate How Does the Bogoliubov Transformation Apply in BCS Theory with MFA?
- arojo
- · Replies 11 ·
Graduate Difference between a particle and its field
- San K
- · Replies 3 ·
Graduate Dirac notation and conjugate transpose in Sakurai
- Master J
- · Replies 3 ·
Graduate Why the photoelectric cross section decreases with the energy of the photon?
- wdlang
- · Replies 11 ·
Graduate Contextuality and Non-Locality
- audioloop
- · Replies 4 ·
Undergrad Basic question regarding Maxwells distribution
- Rhydo
- · Replies 2 ·
Graduate Relativistic Equation Questions
- CAF123
- · Replies 15 ·
Graduate Is the universe a fermion or a boson?
- bwang8
- · Replies 6 ·
Graduate How is the commutator derived through the general form of expectation value?
- Elekko
- · Replies 17 ·
Graduate Is Degeneracy in Quantum States Equally Probable in Thermodynamic Equilibrium?
- hokhani
- · Replies 3 ·
Graduate Why poles in the propagator correspond to dynamical degrees of freedom
- eoghan
- · Replies 3 ·
Graduate Wave Function Collapse: Observers & Probability in Schrodinger's Cat Experiment
- leonstavros
- · Replies 4 ·
Graduate How do different physics theories describe the nature of time?
- mysearch
- · Replies 19 ·
High School Can anything travel faster than light?
- louisgeorge
- · Replies 6 ·
Graduate Bending Radiation: Heat Pumps and Beating Carnot's Law
- philrainey
- · Replies 4 ·
Graduate The dimensionality of the state space of a quantum system
- jcsd
- · Replies 18 ·
Undergrad What Does Black Light Do to a Blackbody?
- philrainey
- · Replies 4 ·
Graduate Expanding over R and L polarisations
- StevieTNZ
- · Replies 8 ·
Graduate Double slit confusion from observed particle dynamics.
- Sicphys
- · Replies 7 ·
Graduate Do quantum superpositions represent projections from higher dimensions?
- ArtistIC
- · Replies 4 ·
Undergrad General explaination of standard model/particles in general?
- unanimousteen
- · Replies 2 ·
Graduate What is the wave function in the time-independent Schrödinger equation?
- AbsoluteZer0
- · Replies 1 ·