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 QM: Coordinate & Momentum Representation w/ Fourier Transform
- LagrangeEuler
- · Replies 1 ·
Graduate How Do You Compose Three Ket Vectors in Quantum Mechanics?
- copernicus1
- · Replies 7 ·
Graduate Is there any evidence at all for quantum counscoiusness
- batmanandjoker
- · Replies 10 ·
Graduate HUP and Conservation of momentum
- g.lemaitre
- · Replies 19 ·
Undergrad Schrodinger equation dedution step?
- tsuwal
- · Replies 5 ·
Graduate A physical example approximating the idealized situation
- ENDLESSYOU
- · Replies 1 ·
Graduate Shadow on Wall: Light Blur from Wave or Quantum?
- xzardaz
- · Replies 2 ·
Graduate What is the mathematical intuition behind operator embedding?
- jshrager
- · Replies 2 ·
Graduate Bounding the speed of `spooky action at a distance'
- thenewmans
- · Replies 14 ·
Graduate Understanding the de Broglie Wave Function - Need a Little Help?
- Roodles01
- · Replies 4 ·
Graduate Bell State of two non-orthogonal modes
- McLaren Rulez
- · Replies 9 ·
Graduate Scope of Pauli's Exclusion Principle
- Aniket1
- · Replies 3 ·
Graduate Why Does Phase Velocity Differ in Relativistic and Non-Relativistic Cases?
- qbslug
- · Replies 1 ·
Graduate Wave Particle Duality: Is It Mass-Energy Equivalence?
- GeneralOJB
- · Replies 1 ·
Graduate Translation operator. Infinite potential well.
- LagrangeEuler
- · Replies 9 ·
Graduate About spin being an internal symmetry
- jtceleron
- · Replies 2 ·
Graduate Entangled States and the Mystery of Wave Function Collapse
- edpell
- · Replies 3 ·
Graduate Commuting Operators and Eigenfunctions in One Dimension
- LagrangeEuler
- · Replies 4 ·
Graduate Relationship Between the Probability Current and Continuity Equation
- darfmore
- · Replies 1 ·
Graduate Understanding the Physical Meaning of Orthogonality Condition in Functions
- pluspolaritons
- · Replies 4 ·
Graduate How to measure the external quantum efficiency of OLEDs?
- Mr. Johnson
- · Replies 4 ·
Graduate Polarization states directly measured : What did this experiment do?
- Coin
- · Replies 16 ·
Graduate Uncertainty about Heisenberg Uncertainty Principle
- Steve Brown
- · Replies 22 ·
Graduate Can anyone explain quantum gates
- pleasehelpmeno
- · Replies 4 ·
Graduate Can Negative Energy Be Produced in Small Amounts Through the Casimir Effect?
- Chemist@
- · Replies 9 ·
Graduate About Schrödinger-Heisenberg connection
- snoopies622
- · Replies 5 ·
Graduate The dirac equation of the hydrogen atom
- Kamper
- · Replies 5 ·
Graduate Density matrix for bell states
- pleasehelpmeno
- · Replies 6 ·
Graduate Understanding the Why of Pauli Exclusion
- anorlunda
- · Replies 7 ·
Graduate Observables, Measurements and all that
- spookyfw
- · Replies 5 ·
Graduate Lorentz contraction in the Quantum realm
- fermi
- · Replies 2 ·
Graduate Hydrogen molecule in a small box, thought experiment
- edpell
- · Replies 3 ·
Undergrad Understanding the Relationship between Planck's Constant and Frequency
- petr1
- · Replies 3 ·
Graduate What Happens When the Universe is Reduced to the Planck Length?
- DrZoidberg
- · Replies 4 ·
Graduate What affects the probability of finding a system in the ground state?
- LagrangeEuler
- · Replies 1 ·
Graduate Could Quantum Entanglement Allow for Faster Than Light Communication?
- Crazymechanic
- · Replies 13 ·
Graduate How can we measure the reality in quBits?
- o0_manifold_0o
- · Replies 4 ·
Graduate On my way to Heisenberg uncert. princ.
- 71GA
- · Replies 1 ·
Undergrad How Do Experimental Physicists Measure Momentum?
- nonequilibrium
- · Replies 24 ·
Graduate Source of Virtual Particles in Space?
- Ty1erC
- · Replies 67 ·
Graduate How is QED solved non-perturbatively, basic outline.
- Spinnor
- · Replies 7 ·
Graduate QFT Ground State Analysis: Understanding e^(-iHT) |0>
- silverwhale
- · Replies 3 ·
Graduate Photon into matter - antimatter pair production question.
- esmeralda4
- · Replies 1 ·
Graduate Two questions on Clebsch-Gordan coefficients
- Yoran91
- · Replies 3 ·
Graduate Quick beginner question on wave-particle duality
- Hercuflea
- · Replies 4 ·
Graduate Breaking wavefunction into pieces
- copernicus1
- · Replies 1 ·
Graduate Why Must Quantum Physics Involve Discrete Quanta?
- TGlad
- · Replies 9 ·
Graduate Why don't virtual particles cause decoherence?
- Mukilab
- · Replies 131 ·
Graduate I question the double-slit experiment:
- Symmetry3
- · Replies 4 ·
Graduate Prove that the angular momentum operator is hermitian
- Septim
- · Replies 3 ·
Graduate Pauli Exclusion Principle and Entanglement
- g.lemaitre
- · Replies 3 ·
Graduate Why is Schrodinger's Cat entangled? Or is it not?
- QuantumPixel
- · Replies 3 ·
Graduate Can Physicists Unravel the Mysteries of Einstein-Rosen Bridges and Wormholes?
- Kutt
- · Replies 12 ·
Graduate Understanding Quark-Gluon Vertex in QCD Feynman Rules
- Einj
- · Replies 7 ·
Graduate Qubit Spin Convention: |0> & |1> Eigenvectors?
- lewis198
- · Replies 1 ·
Graduate A little Bra-Ket notation theorem that I don't get
- Excimer
- · Replies 13 ·
Graduate The Free Particle Wave Function: A Flawed Model?
- rays
- · Replies 10 ·
Graduate Spin orbit coupling and hydrogen problem
- aaaa202
- · Replies 1 ·
Graduate Effect of photon detection mid-way between (double) slit and screen
- San K
- · Replies 2 ·
Graduate Is Spin Networks Still Relevant in Quantum Gravity Research Today?
- TGlad
- · Replies 2 ·
Graduate Solving Carbon Nanotube Model with Lz & Ly Expectation Values
- aaaa202
- · Replies 3 ·
Graduate Time derivative of creation/annhilation operators
- pleasehelpmeno
- · Replies 3 ·
Graduate Simultaneity of Uncertainty Principle
- tomwilliam2
- · Replies 3 ·
Graduate Why are Bell's inequalities violated?
- JK423
- · Replies 97 ·
Graduate Gaussian function to derive Heisenberg's uncertainty principle
- 71GA
- · Replies 19 ·
Graduate Constructing a Toffoli gate with qubit gates?
- randomafk
- · Replies 1 ·
Graduate Collapse of state vector for continuous eigenvalues
- bob900
- · Replies 3 ·
Undergrad Paul Dirac's 1933 research paper
- sudu.ghonge
- · Replies 3 ·
Graduate Proving Pauli Matrices are Generators of SU(2)
- LayMuon
- · Replies 11 ·
Graduate Will an electron vibrating in a 1D radiates?
- thitchen
- · Replies 7 ·
Graduate Understanding Spin Orbit Coupling: Deriving the Hamiltonian
- aaaa202
- · Replies 1 ·
Graduate About interchange phase of identical particles in Weinberg's QFT book
- kof9595995
- · Replies 5 ·
Graduate A question about Heizenberg uncertainty.
- ndung200790
- · Replies 8 ·
Graduate I don't understand why -1/2 is the higher energy level and +1/2 is the
- duggielanger
- · Replies 1 ·
Graduate Group velocity in infinite square well
- 8Apeiron8
- · Replies 3 ·
Undergrad Black body and continuous spectrum
- jaumzaum
- · Replies 3 ·
Graduate I am getting into a mess with the HUP
- MHD93
- · Replies 12 ·
Graduate A question on the product of two real linear operators
- Excimer
- · Replies 2 ·
Undergrad The heck with the Cat, what about the Human?
- jmoorhea
- · Replies 8 ·
Graduate What is the state vector after measuring
- aaaa202
- · Replies 7 ·
Graduate Understanding the Translational Operator and Its Applications
- matematikuvol
- · Replies 10 ·
Graduate What is a pure quantum state and a mixed quantum state?
- rsaad
- · Replies 4 ·
Graduate Maxwell's equations from U(1) symmetry
- Thoros
- · Replies 5 ·
Graduate Is radioactive decay reversible in time?
- Izzhov
- · Replies 2 ·
Graduate Quantum Communication: Two-Way Messaging Without Physical Link?
- Stanley514
- · Replies 3 ·
Graduate Is the Book's Photon Calculation Off by a Factor of 1000?
- Fluxthroughme
- · Replies 5 ·
Graduate Heisenberg's uncertainty principle invalidated?
- quantumphilosopher
- · Replies 23 ·
Graduate Questions about entanglement from a non-physicist
- pkrahn
- · Replies 12 ·
Graduate Interference pattern calculations for unequal slits per QM theory
- San K
- · Replies 5 ·
Graduate Isomorphism symmetry group of 6j symbol
- Yoran91
- · Replies 4 ·
Simple Normalization/schrodinger equation problem
- Normalization
- · Replies 1 ·
Undergrad Diffraction and Probability Amplitude
- Johnleprekan
- · Replies 7 ·
High School What is Orbital Angular Momentum?
- Johnleprekan
- · Replies 3 ·
Graduate Quantum mechanics in multiple dimensions
- aaaa202
- · Replies 9 ·
Undergrad Quantization of Energy: Planck's Constant & Standing Waves
- ENDLESSYOU
- · Replies 2 ·
Graduate Is the wave-function description of photon location incomplete?
- San K
- · Replies 8 ·
Graduate Proof that all operators are linear
- dEdt
- · Replies 12 ·
Graduate Quantum field theory, photons, and polarization.
- Spinnor
- · Replies 9 ·
Graduate The Nature of Knowledge in Quantum Mechanics
- kebugcheck
- · Replies 30 ·
Graduate Double slit experiment - no interference in the vicinity of light
- sryzdn
- · Replies 2 ·