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
High School Irreversibility vs reversibility
- Blue Scallop
- · Replies 57 ·
Undergrad Confused about complex numbers
- snate
- · Replies 2 ·
High School "Distribution" of a particle in different situations
- davidge
- · Replies 6 ·
Undergrad Understanding the Form of the Y(2,0) Spherical Harmonic
- Archeon
- · Replies 3 ·
High School What is the best way to imagine a photon?
- Daniel Petka
- · Replies 25 ·
Graduate Paper Spelunking: "Particle Creation by Black Holes" - S.H.
- wraith
- · Replies 27 ·
Undergrad Is Entanglement Commutative in Quantum Computing?
- Kenneth Adam Miller
- · Replies 4 ·
Undergrad Two orthonormal bases that span the same space
- mike1000
- · Replies 14 ·
Undergrad Help with Math in Quantum Mechanics: Variational Method
- mody mody
- · Replies 4 ·
Undergrad Phase Space and two dimensional Hilbert Space
- Gean Martins
- · Replies 8 ·
Undergrad What does the Hadamard correspond to in hardware?
- Kenneth Adam Miller
- · Replies 12 ·
Undergrad Amplitude moving through detectors
- Swamp Thing
- · Replies 2 ·
Undergrad What Is the Physical Significance of ##\beta_{tot}## in Molecular Polarization?
- Konte
- · Replies 1 ·
Graduate Reduced Density Operator and Entanglement
- Sharkey4123
- · Replies 4 ·
Undergrad How Does Wave Function Collapse Work in Quantum Mechanics?
- Aufbauwerk 2045
- · Replies 22 ·
Undergrad What Is the Meaning of Simultaneous Reality in the EPR Paradox?
- victor94
- · Replies 3 ·
Undergrad What is the significance of the Lande g-factor in nuclear physics?
- teroenza
- · Replies 2 ·
High School The Wave Function of Our World: How Does It Emerge?
- jaydnul
- · Replies 100 ·
Undergrad Do we still experience quantum effects in decohered systems?
- jaydnul
- · Replies 14 ·
Undergrad Time Difference on a quantum level
- Dillion Harper
- · Replies 1 ·
Graduate Bell's theorem mathematical content
- RockyMarciano
- · Replies 35 ·
Undergrad My stupid question about particle-wave duality
- danihel
- · Replies 1 ·
Undergrad What Happens When a Photon Hits an Electron?
- Ivanov
- · Replies 1 ·
Undergrad Question about time-variant Schrodinger's eq'n
- woody stanford
- · Replies 4 ·
Undergrad Question(s) about Dirac notation
- mike1000
- · Replies 8 ·
Undergrad What does the state vector mean?
- mike1000
- · Replies 50 ·
Undergrad Behavior of successive measurements
- mike1000
- · Replies 2 ·
Undergrad Why Does Quantum Mechanics Require Complex Numbers?
- MichPod
- · Replies 5 ·
High School Why is state transition probability symmetric?
- normvcr
- · Replies 2 ·
Undergrad Xt - Understanding Dipole Moment Components in Rigid and Non-Rigid Molecules
- Konte
- · Replies 5 ·
High School Quantization of energy and ultraviolet catastrophe
- physics user1
- · Replies 4 ·
Undergrad Real world process that results in reciprocal wavefunction
- NotASmurf
- · Replies 5 ·
Undergrad Understanding Orthogonality: QM Lectures by Dr. Physics A
- john t
- · Replies 3 ·
Undergrad Photon number state and Doppler shift
- Swamp Thing
- · Replies 4 ·
Undergrad Why is the total number of quantum states = 2n^2 for some n?
- jerronimo3000
- · Replies 3 ·
Undergrad Understanding Change of Basis & Superpositioning of States
- mike1000
- · Replies 30 ·
Undergrad Are superposition states observable?
- mike1000
- · Replies 29 ·
Undergrad Do operators A and Hamiltonian share a set of eigenfunctions if they commute?
- dyn
- · Replies 3 ·
High School Quantum mechanics and the macroscopic
- jaydnul
- · Replies 4 ·
High School How does sideband detection work in a Penning trap?
- joegibs
- · Replies 2 ·
Undergrad Could a Negative Dimension exist
- SakoNova
- · Replies 12 ·
Undergrad Help in understanding a quantum circuit
- victor94
- · Replies 1 ·
Graduate Gauge transformation of gauge fields in the adjoint representation
- spaghetti3451
- · Replies 2 ·
Undergrad Is chirality a conserved quantity?
- haael
- · Replies 2 ·
Undergrad Who will win -- Pauli or Einstein?
- Kaushik_KS
- · Replies 7 ·
Undergrad What does a superposition of states mean in quantum mechanics?
- mike1000
- · Replies 52 ·
High School Scientists evade the Heisenberg uncertainty principle
- wolram
- · Replies 1 ·
Undergrad Understanding Entanglement Measures and the Bloch Sphere Representation
- edguy99
- · Replies 1 ·
Undergrad How do electronics in tranistors tunnel if decohered
- jaydnul
- · Replies 4 ·
Undergrad On-Demand Photon Pairs: Entanglement or Necessity?
- Swamp Thing
- · Replies 6 ·
Undergrad Symmetric, antisymmetric or neither
- fog37
- · Replies 4 ·
Undergrad Calculating the probability density of a superposition
- Archeon
- · Replies 7 ·
Undergrad Spin quantum numbers: correct names and formulae?
- N88
- · Replies 7 ·
Undergrad Quantum-Mechanical treatment of circuits
- davidge
- · Replies 2 ·
Undergrad What does it mean to "drive a particle" in a penning trap?
- joegibs
- · Replies 3 ·
Undergrad QFT, event amplitudes and reversed time....
- asimov42
- · Replies 6 ·
Graduate Flux-flux correlation function under Feynman's path integral
- junt
- · Replies 2 ·
Undergrad Can Electric Fields be Teleported & Entangled?
- Checkster2323
- · Replies 3 ·
Undergrad Classical v. quantum dynamics: Is spin the key difference?
- N88
- · Replies 6 ·
Undergrad Angular momentum raising/lowering operators
- dyn
- · Replies 6 ·
High School Measuring velocity and interference?
- joegibs
- · Replies 5 ·
Undergrad What causes light to diffract in the double slit experiment?
- Ivanov
- · Replies 4 ·
Undergrad Does Relativistic Motion Impact Quantum Optical Experiments?
- Swamp Thing
- · Replies 2 ·
Graduate Coupling constant in Yang-Mills Lagrangian
- spaghetti3451
- · Replies 2 ·
Graduate How a laser resonator generates the standing wave?
- Basov
- · Replies 5 ·
High School How do you build a quantum suicide machine?
- Elias
- · Replies 31 ·
Undergrad How can Spin-up z and spin-down z span the space?
- mike1000
- · Replies 9 ·
Graduate Polarization of gauge bosons and gauge choice
- spaghetti3451
- · Replies 4 ·
Undergrad Momentum cut-off regularisation & Lorentz invariance
- Frank Castle
- · Replies 5 ·
Undergrad Understanding the scalar field quantization
- leo.
- · Replies 5 ·
Graduate Change in the EM field energy due to dispersion of a wave packet
- SergioPL
- · Replies 20 ·
Graduate Manipulation with the Dirac equation
- spaghetti3451
- · Replies 4 ·
Undergrad Classical analogue of quantum contextuality
- Demystifier
- · Replies 23 ·
Undergrad Hong-Ou-Mandel with two beam splitters
- Swamp Thing
- · Replies 5 ·
High School Quantum mechanic has something to do with electromagnetism?
- Massi
- · Replies 1 ·
Undergrad Solution to the Dirac equation
- klabautermann
- · Replies 4 ·
Undergrad What happens when a particle observes itself during quantum tunneling?
- sunmaggot
- · Replies 7 ·
Undergrad What does the magnetic moment of a particle depend on?
- joegibs
- · Replies 2 ·
Undergrad Do quantum linked rings (quantum knots) have energy?
- Noduagga
- · Replies 2 ·
Undergrad What is the physical significance of Bell's math?
- N88
- · Replies 199 ·
Undergrad Does this explain the Zeno effect observed
- Trollfaz
- · Replies 5 ·
Graduate Experimental tests on the reality of the quantum state
- bohm2
- · Replies 4 ·
Graduate Higher Dimension and Randomness
- Kaura
- · Replies 1 ·
Undergrad Solving 2 Electron Spin 1/2 System: Need Help!
- Noora Alameri
- · Replies 5 ·
Undergrad Bound states of a periodic potential well in one dimension
- Chuckstabler
- · Replies 2 ·
Undergrad Finite Square Well: Bond States and Asymmetric Potential Wells
- LagrangeEuler
- · Replies 3 ·
Undergrad What are pure and mixed states in quantum mechanics?
- aveline de grandpre
- · Replies 2 ·
Undergrad Peter Woit's free QT, Groups and Representations ebook
- Greg Bernhardt
- · Replies 5 ·
High School What Are Constrained Quantum States and Their Implications?
- Trollfaz
- · Replies 2 ·
Undergrad Has Planck length been derived rigorously?
- muzukashi suginaiyo
- · Replies 9 ·
High School Does an electron's position collapse when measuring g factor?
- joegibs
- · Replies 17 ·
Undergrad If an electron isn't fundamental, what fields are it made of
- joegibs
- · Replies 3 ·
Undergrad Extended hamiltonian operator for the Hydrogen atom
- PedroBittar
- · Replies 3 ·
Undergrad Interpreting "momentum" in WKB approximation
- deep838
- · Replies 3 ·
High School Particle or Wave? Duality Explained
- rahaverhma
- · Replies 49 ·
Undergrad Elementary particle transformations/couplings
- stg213
- · Replies 3 ·
High School Time & Superposition: Rate of Observation
- Rachel Lee Pierce
- · Replies 7 ·
Graduate Deriving the Kubo Formula for Viscosity in Thermal Relativistic QFT
- Kurret
- · Replies 2 ·
Undergrad What is (rest) mass for a particle?
- calinvass
- · Replies 3 ·
High School Tachyons: Bosons, Force Particles, Messenger Particles?
- Debaa
- · Replies 25 ·