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 Calculating Broglie Wavelength for Helium Superfluid
- glueball8
- · Replies 3 ·
Undergrad Can We See Photons With Naked Eye?
- Sabradin
- · Replies 21 ·
Graduate Revolutionary Experiment Confirms Incompleteness of Quantum Mechanics
- Rade
- · Replies 35 ·
Graduate Photons Detector not yielding which-path info.
- wampeter
- · Replies 44 ·
Graduate Commuting Operators in Sequential Stern Gerlach Experiment
- maverick280857
- · Replies 16 ·
Graduate Measurement and Stern Gerlach Experiments review articles?
- maverick280857
- · Replies 3 ·
Undergrad Distance Between Atoms: How to Measure
- Legion81
- · Replies 8 ·
Graduate Linus Pauling's Hydrogen Atom: MVR=nh/2pi?
- The_ArtofScience
- · Replies 1 ·
Graduate Quantum Mechanics: Learning Bra-Ket Notation
- Reedeegi
- · Replies 4 ·
Graduate Coherent States of the Harmonic Oscillator
- tshafer
- · Replies 2 ·
Graduate Questions about the Density Operator Formulation of Quantum Mechanics
- CPL.Luke
- · Replies 3 ·
Graduate Turning Off a Measuring Device: Wave-to-Particle Possibility?
- Sabradin
- · Replies 11 ·
Graduate How Do Quantum Computers Use Qubits in Superposition for Calculations?
- Nick89
- · Replies 2 ·
Graduate Unveiling the Mysteries of Photon Helicity
- Usaf Moji
- · Replies 2 ·
Graduate Is there any reason the Universe must have a wave function?
- C Rob
- · Replies 3 ·
Graduate How do I calculate the initial alpha for an iterative process in a finite well?
- bluestar
- · Replies 3 ·
Graduate Massless free field equation -> Maxwell's eqn.
- lark
- · Replies 10 ·
Graduate What is a wave function and how does it describe the wave nature of a particle?
- janakiraman
- · Replies 4 ·
Graduate Concept of a renormalizable theory in Weinberg's feild theory book
- nughret
- · Replies 5 ·
Undergrad Understanding the Hamiltonian of a System: Explained for Beginners
- janakiraman
- · Replies 13 ·
Graduate Quantum computing and Nanoscale CAD
- BWV
- · Replies 5 ·
Graduate What Would Happen If 2 Protons Collided?
- Dumbo
- · Replies 1 ·
Graduate Solving Fermions: Finding States & Energies
- guidob
- · Replies 4 ·
Undergrad Why is the Weak Force So Weak?
- carus88
- · Replies 2 ·
Graduate Why spinor bec is called ''spinor bec''?
- wdlang
- · Replies 1 ·
Graduate Why Don't Electrons Fall into the Nucleus Despite the Uncertainty Principle?
- kahoomann
- · Replies 10 ·
Graduate Chirality vs Helicity: Explaining the Difference
- gremezd
- · Replies 6 ·
Graduate Projection postulate - can it be verified?
- ala
- · Replies 17 ·
Graduate Dirac delta spherical potential
- neworder1
- · Replies 5 ·
Graduate What Is the Simplest Picture for Entangled Particles?
- wawenspop
- · Replies 10 ·
Graduate Can anyone improve the Gottesman and Chuang quantum digital signature scheme?
- Dragonfall
- · Replies 2 ·
Graduate Are Ghosts a Scientific Myth or Reality?
- captain
- · Replies 1 ·
Undergrad Finding n for Line Spectra with 400 nm Wavelength
- pisay
- · Replies 1 ·
Undergrad Gravity and its effect on particles/molecules and bonds.
- g__ritchie
- · Replies 7 ·
Undergrad Detecting Single Photon Energy
- splinewave
- · Replies 3 ·
Graduate Questions about some material from Dirac
- JasonJo
- · Replies 1 ·
Graduate Differentiation of an exponential with operators (Peskin p.84)
- gremezd
- · Replies 4 ·
Graduate Is the Integral of the Square of Phase Density Constant in Classical Mechanics?
- xylai
- · Replies 1 ·
Graduate Electrons travel faster than the speed of light
- epkid08
- · Replies 90 ·
Graduate The Principle of Least Action in Quantum Physics
- lugita15
- · Replies 10 ·
Graduate Quantum attraction by exchange of particles
- yoyoq
- · Replies 1 ·
Graduate Pair Annihilation and Conservation of Momentum and Energy Explained
- jk4
- · Replies 3 ·
Graduate Renormalization in Fluidodynamics
- random3f
- · Replies 1 ·
Graduate Total Spin of Two Particles w/ Spin 1
- Usaf Moji
- · Replies 2 ·
High School Basic question on electron, ion and photon excitation
- guorenguoren
- · Replies 1 ·
Algebra Help: Attached File Guide
- cosmology
- · Replies 1 ·
Graduate Is there a description of collapse in QFT ?
- dreynaud
- · Replies 3 ·
Graduate Pair Production and Momentum Transfer in Photon Interactions
- jk4
- · Replies 4 ·
Undergrad Heisenbergs Uncertainty Principle
- Niles
- · Replies 38 ·
Graduate What's wrong with Heisenberg's microscope?
- kahoomann
- · Replies 11 ·
Graduate What is the significance of singlets and gauge invariance in particle physics?
- ledamage
- · Replies 7 ·
Graduate Is probability a Quantum Observable ?
- dreynaud
- · Replies 12 ·
Graduate Can a cat truly be the observer in Schrödinger's thought experiment?
- nepofazz
- · Replies 1 ·
Undergrad Double slit experiment - quick question
- netjim66
- · Replies 3 ·
Graduate What the state of Quantum mechanics (QM) is?
- xylai
- · Replies 15 ·
Graduate Mach-Zehnder Interferometer at Wiki Question
- daniel29208
- · Replies 1 ·
Graduate Question About Harmonic Oscillator in Griffiths - E=0 or E=1/2hw?
- adartsesirhc
- · Replies 2 ·
Graduate What Is the Role of the Hamiltonian in Quantum Mechanics?
- Xezlec
- · Replies 35 ·
Graduate Rotate Photon Polarization: 90 Degrees?
- Dragonfall
- · Replies 2 ·
Graduate Pauli exclusion principle question
- drullanorull
- · Replies 2 ·
Graduate Kinetic Energy in Non-Normalized Particle State
- jalobo
- · Replies 1 ·
Graduate Quantizing a two-dimensional Fermion Oscillator
- jostpuur
- · Replies 88 ·
Graduate Laser Tube Cavities: Increasing Power w/Mirrors?
- mharney1268
- · Replies 4 ·
Graduate Distinguish Orthogonal Qubits: Test & Impact
- Dragonfall
- · Replies 3 ·
Graduate Rotating Bose gases, quantum vortices
- confused_man
- · Replies 9 ·
Graduate Dimensional Regularization of an Integral
- Sunset
- · Replies 2 ·
Graduate What if Planck's Constant was 6.63x10^30?
- the iron maiden
- · Replies 15 ·
Graduate Exclusion Principle and Symmetry in Multi-Electron Systems
- Bobhawke
- · Replies 13 ·
Graduate R. Slansky, Group theory for unified model building
- jpg15
- · Replies 5 ·
Undergrad Why Was "h" Chosen for Planck's Constant?
- FordPrefect
- · Replies 3 ·
Graduate Feynman's QED Lectures: Questions about partial reflection
- STS816
- · Replies 5 ·
Graduate Time depending quantum solution
- timgor
- · Replies 1 ·
Graduate The dangers of heuristic reasoning
- Count Iblis
- · Replies 2 ·
Graduate Clebsch-Gordan coefficients for spin-one particle decomposition
- Marty
- · Replies 16 ·
Graduate Particle in 1-D Box: Pressure Force on Wall
- libai
- · Replies 1 ·
Graduate What are some common questions about Peskin's QFT book?
- ismaili
- · Replies 3 ·
Graduate Is the Born Rule Rooted in Classical Wave Energy Principles?
- ThomasT
- · Replies 5 ·
Graduate Destroying interference pattern of classical waves
- Count Iblis
- · Replies 6 ·
Graduate Why are Photons Massless? Zach's Questions
- zwest135
- · Replies 10 ·
Graduate How does the photon absorption process work in atoms?
- caybo
- · Replies 1 ·
Graduate QFT and local gauge invariance
- losang
- · Replies 5 ·
Graduate Counter example to the Bloch's theorem?
- jostpuur
- · Replies 11 ·
Graduate QFT: Find Poincare Group Generators in QFT
- udaraabey
- · Replies 2 ·
Graduate Does the uncertainty principle break symmetry?
- kahoomann
- · Replies 5 ·
Graduate Why Does a Wave Packet Better Describe a Particle in Quantum Mechanics?
- shubhajit
- · Replies 2 ·
Graduate Understanding Bras and Kets as Vectors and Tensors
- Phrak
- · Replies 154 ·
Graduate FAQ - Do Photons Move Slower in a Solid Medium?
- Usaf Moji
- · Replies 8 ·
Graduate Simulate Light Not Polarized Using Jones Formalism
- gandalf215
- · Replies 6 ·
Graduate Uncovering the Randomness of Thermal Noise and Nuclear Decay
- countrymac
- · Replies 4 ·
Graduate Field operators - how do they work?
- erkokite
- · Replies 6 ·
Graduate What is the significance of parity in group theory?
- xylai
- · Replies 2 ·
Graduate What Is the Cardinality of Bloch Waves in Quantum Mechanics?
- jostpuur
- · Replies 1 ·
Graduate How Do You Compute Non-Integer Powers of Quantum Operators?
- nicksauce
- · Replies 11 ·
Graduate Feynman's perspective on the double slit
- zwest135
- · Replies 11 ·
Undergrad Question about refraction experiments
- jostpuur
- · Replies 2 ·
Undergrad What is the Pauli exclusion principle?
- supernovae
- · Replies 3 ·
Graduate Finding Eigenvalues of Dirac Matrices with Constraint Conditions
- waht
- · Replies 2 ·
Graduate Stark Effect using first order variation theory.
- scorpion990
- · Replies 2 ·
Undergrad Black Body Radiation: Why Maintaining Constant Temp?
- Amith2006
- · Replies 2 ·
Graduate Massless Schrödinger equation
- Orion1
- · Replies 27 ·