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 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 Is There a Deeper Connection Between Orbital Angular Momentum and Particle Spin?
- 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 Understanding the Process of Cold Welding
- 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 & simultaneous measurement
- 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 Quantum Causality: Pauli's Definition Explained
- 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 Question about SPDC (Making entangled photons)
- 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 Photons -- where am I going wrong?
- 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 Understanding Hermitian Operators for QM Beginners
- 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 Double Slit Experiment: Observer Effect & Measurement Problem
- 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 Unraveling the Atomic Spin: Understanding the Building Blocks of Matter
- 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 Quantum entanglement and communication
- 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 Density Operators: What's the Copies of the Same System?
- 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 Spin vs Dirac Equation: Understanding 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 Advanced atomic physx: From Liouville Equation to the Bloch equations
- TheDestroyer
- · Replies 6 ·
Graduate Query about quantum superposition and wave functions
- tim1608
- · Replies 11 ·
Graduate Question about wavefunctions and their Hilbert space
- Tosh5457
- · Replies 8 ·
Graduate Destructive interference - What happens to the energy?
- tim1608
- · Replies 20 ·
Graduate Spin assumption for fermions in potential well.
- ranytawfik
- · Replies 3 ·
Graduate Thermal AND Quantum Fluctuations?
- maverick_starstrider
- · Replies 19 ·
Graduate Planck length and quantized position
- Lit
- · Replies 6 ·
Graduate Did I Mess Up My CHSH Inequality Simulation?
- .Scott
- · Replies 1 ·
Graduate Simultaneous recognition of to change and being constant
- victorvmotti
- · Replies 13 ·
Graduate Measurement of singularity as a particle inside event horizon
- nomadreid
- · Replies 2 ·
Graduate Bell's theorem: actual experiment event by event
- humbleteleskop
- · Replies 70 ·
Graduate How are chemical bonds described by quantum mechanics?
- quantumcat
- · Replies 7 ·
Graduate Collapse of Wavefunction, Double-Slit Experiment
- crissyb1988
- · Replies 2 ·
Graduate What are the SU groups? I.e SU(2), SU(3)?
- RyanTG
- · Replies 4 ·