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 Really quick explanation for gauge theory?
- CookieSalesman
- · Replies 6 ·
Graduate Does the wavefunction tell us what's happening in the system?
- jaydnul
- · Replies 1 ·
Graduate Quantum wave bursting out of 100 jars
- jartsa
- · Replies 8 ·
Graduate Hermitian conjugate of the annihilation operator
- dyn
- · Replies 6 ·
Graduate What does populated mean in perturbation theory?
- carllacan
- · Replies 1 ·
Graduate Why Is Infinite Degrees of Freedom Important for Thermal States?
- specdude
- · Replies 13 ·
Graduate Wave-particle duality confusion
- haisydinh
- · Replies 6 ·
Graduate Ladder operators and the momentum and position commutator
- kmchugh
- · Replies 1 ·
Graduate Continuous (non-discrete) Quantum States
- kq6up
- · Replies 7 ·
Graduate Uncertainty Principle and the Infinite Well
- dyn
- · Replies 5 ·
Graduate Understanding Feynman's Approach to Covalent Bonding in Hydrogen Molecule
- damosuz
- · Replies 17 ·
Graduate Poles Arising in a Scattered Particle in a Delta Potential
- dreinh
- · Replies 1 ·
Graduate What is meant by the frequency of a single photon?
- nabeel17
- · Replies 1 ·
Graduate Conmutative Hermitian operator in degenerate perturbation theory
- carllacan
- · Replies 2 ·
Graduate Finite Square Well: Deriving Eq. (1)
- Bashyboy
- · Replies 1 ·
Graduate Trying to understand the WKB approximation
- phsopher
- · Replies 6 ·
Graduate Use Green's Function calculate photonic density of state
- Jeffrey Yang
- · Replies 4 ·
Graduate Why only spin-1/2 and not higher-covering-space topologies
- MadRocketSci2
- · Replies 1 ·
Graduate How can a particle be in a classically prohibited region?
- SirClueless
- · Replies 24 ·
Graduate Bibliography to understand Fermi, Bose and Boltzmann statistics?
- Tosh5457
- · Replies 9 ·
Graduate What Happens to Photons in the Double Slit Experiment?
- Agramenauer
- · Replies 11 ·
Graduate Pauli exclusion, symmetry, and electric repulsion
- MadRocketSci2
- · Replies 3 ·
Graduate Why does rotational invariance have to do with spin?
- carllacan
- · Replies 1 ·
High School How does cold welding work?
- Crapsghetti
- · Replies 1 ·
Graduate What is intrinsic time-dependence in the Schrödinger picture?
- carllacan
- · Replies 5 ·
Graduate Negating the need for anything actually solid
- RPOL382
- · Replies 3 ·
Graduate What is the meaning of an integrable model being SU(3) invariant?
- Maybe_Memorie
- · Replies 1 ·
Graduate Uncertainty principle and simultaneous measurement of observables
- normvcr
- · Replies 30 ·
Graduate Why don't creation and destruction operators conmute?
- carllacan
- · Replies 5 ·
High School Can someone tell me planck constant?
- Alexander~E=hv
- · Replies 7 ·
Graduate At most explicit time-dependent operator
- carllacan
- · Replies 6 ·
Graduate How does Compton scattering suggest photons?
- kini.Amith
- · Replies 5 ·
Graduate What Happens to Schrodinger's Cat When Measuring an Entangled Atom?
- Vacrin
- · Replies 1 ·
Graduate Commuting, non-commuting, anti-commuting
- Lapidus
- · Replies 3 ·
Graduate Understanding Commutators in Quantum Mechanics: General and Specific Questions
- Drew Carey
- · Replies 6 ·
Graduate Energy levels and Hilbert Spaces
- carllacan
- · Replies 4 ·
Graduate Concerning the sparcity of the real-time quantum propagator
- rudaguerman
- · Replies 2 ·
Graduate Radioactivity and Quantum Zeno Question
- musik132
- · Replies 3 ·
Graduate Iteration method for density equations
- Robert_G
- · Replies 3 ·
Graduate Can Deterministic Chaos Mimic True Randomness?
- Juan Largo
- · Replies 10 ·
Graduate What is Bob's task (Geason and Busch)
- naima
- · Replies 9 ·
Graduate How Does Shot Noise in a Photodiode Lead to White Noise Characteristics?
- aaaa202
- · Replies 2 ·
Graduate In ground state, are spins aligned or anti-aligned?
- Aziza
- · Replies 2 ·
Graduate Finding A Solution Using the Ladder Operators
- Bashyboy
- · Replies 6 ·
Graduate Two atoms in an optical cavity.
- Lerak
- · Replies 6 ·
Graduate Boundary and Continuity Conditions in 2D Potential Problem
- PeteSampras
- · Replies 2 ·
Graduate Stern-gerlach vs zeeman effect = paradox?
- Aziza
- · Replies 1 ·
Graduate What does Pauli mean by quantum causality and commutation at spacelike separations?
- Maximise24
- · Replies 5 ·
Graduate Taylor Series Expansion About a Local Minimum
- Bashyboy
- · Replies 3 ·
Undergrad Potential Barrier for different types of junctions
- Joseph8022
- · Replies 5 ·
Graduate Can We Truly Touch Anything at the Atomic Scale?
- Stjernsen
- · Replies 16 ·
Graduate Simulating Closed Timelike Curves through Quantum Optics
- phys_student1
- · Replies 4 ·
Graduate Can SPDC produce entangled photons at any visible wavelength?
- Xyius
- · Replies 1 ·
Graduate When you measure an entangled particle is it obeying a symmetry law?
- Bi-Curious
- · Replies 21 ·
Graduate How Can We Describe a Coupled System and Heat Bath in Quantum Mechanics?
- hilbert2
- · Replies 5 ·
Graduate Schrödinger's Cat, uncertainty, and observation question
- themadquark
- · Replies 6 ·
Graduate A new look at quantum mechanics?
- naima
- · Replies 13 ·
Graduate Photoelectric Effect: Understanding Kinetic Energy of Electrons
- Esfand Yar Ali
- · Replies 4 ·
Graduate Why doesn't a photon's expanding shell get blocked by obstacles?
- Bi-Curious
- · Replies 5 ·
Graduate Double Stern-Gerlach experiment
- hideelo
- · Replies 1 ·
Graduate Modeling a measurement as unitary
- PeterDonis
- · Replies 38 ·
Graduate Can the bare mass of a photon be set to zero in gauge theories?
- geoduck
- · Replies 3 ·
Graduate Why doesn't the hermitian property of operators work like matrices?
- kq6up
- · Replies 34 ·
Graduate How can I construct singlet, triplet, and more with S=1 ions?
- eastblue
- · Replies 1 ·
Graduate D-Wave quantum computer processor
- .Scott
- · Replies 5 ·
Graduate Does electron interference collapse if detector A is on but unobserved?
- eXmag
- · Replies 18 ·
Graduate Unseen Light's Puzzling Behaviour
- darrin016
- · Replies 16 ·
Graduate Is Probability the Same as Possibility in Quantum Physics?
- multir
- · Replies 14 ·
Graduate Can Tritium Undergo Nuclear Decay in 1 Second or 1 Eon?
- Paul Dirac
- · Replies 13 ·
Undergrad About compton's effect of shift in wavelengths
- Esfand Yar Ali
- · Replies 7 ·
Graduate Double Slit and Shroedinger's Cat
- Weeping Rupee
- · Replies 14 ·
Graduate Planck's law for longer wavelengths
- kevinnn
- · Replies 2 ·
Graduate Unitary time evolution - products of consecutive evolutions
- "Don't panic!"
- · Replies 8 ·
Graduate Heisenberg equation of motion for the Dirac field?
- pellman
- · Replies 9 ·
Graduate Multiple events caused by a single photon
- fredsie
- · Replies 10 ·
Graduate Is the Wave Function a Fundamental Hypothesis in Quantum Mechanics?
- kroni
- · Replies 14 ·
Graduate Why is the anti-neutrino going against time?
- Paul Dirac
- · Replies 5 ·
Graduate What gives an atom its atomic spin?
- Symmetry777
- · Replies 2 ·
Graduate Optics from a Quantum Mechanical stand point
- SquidgyGuff
- · Replies 7 ·
Graduate Origins of the electromagnetic force
- Crapsghetti
- · Replies 11 ·
Graduate Do Quantum Particles Generate Gravity Waves?
- brianhurren
- · Replies 6 ·
Graduate Can entangled electrons transmit messages faster than light?
- DanCarpenter
- · Replies 18 ·
Graduate Nature of Electrons inside an atom
- haisydinh
- · Replies 3 ·
Graduate Behaviour of 3-fermions in a Magnetic Field
- ranytawfik
- · Replies 5 ·
Graduate Do copies of the same system mean many atoms or one atom's levels?
- Robert_G
- · Replies 27 ·
Graduate Why Does Planck's Law Assume Oscillator Energy Applies to Electromagnetic Modes?
- dEdt
- · Replies 1 ·
Graduate How Does a Blackbody Emit Radiation Beyond Its Oscillator Frequencies?
- dEdt
- · Replies 15 ·
Graduate Material for Quantum Transport
- acharya4689
- · Replies 1 ·
Graduate Use of QED equations of motion?
- QuasiParticle
- · Replies 14 ·
Graduate Meaning of the Energy-Time Uncertainty Relation
- MrRobotoToo
- · Replies 3 ·
Graduate Does the uncertainty principle apply at all to photons?
- Reallyfat
- · Replies 34 ·
Graduate Questions about Quantum erasure with causally disconnected choice
- samhealy
- · Replies 2 ·
Graduate Why must the Pauli matrices in the Dirac equation represent physical spin?
- LarryS
- · Replies 11 ·
Graduate Can Raising and Lowering Operators Be Found for an Anharmonic Oscillator?
- hilbert2
- · Replies 3 ·
Graduate Stability against small perturbation.
- wphysics
- · Replies 2 ·
Graduate Will same event happen at a parrallel universe?
- henrywang
- · Replies 2 ·
Graduate What Does A Represent in the Quantum Mechanical Wave Equation Ae^{i(kx-wt)}?
- velo city
- · Replies 2 ·
Graduate Double Slit Experiment with White Light and one Slit colour filtered
- Commando Spaz
- · Replies 5 ·
Graduate The Simplest Eigenfunction for Schrödinger's Wave EQ?
- kq6up
- · Replies 10 ·
Graduate Deriving Bloch equations from Liouville equation with spherical tensors
- TheDestroyer
- · Replies 6 ·