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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.

Quantum Interpretations and Foundations

Graduate Understanding Barandes' microscopic theory of causality
Graduate How to derive or verify Hartree product?
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Graduate Sakurai page 181: Time evolution of ensembles
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Graduate Electrons viewed in real time for the first time ever
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Graduate Harmonic solutions as Riemannian oscillators ?
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Graduate What is the maximum energy density of EM radiation and its effects?
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Graduate Fock space and the Brillouin condition
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Graduate For a electron orbiting around the nucleus, why must it be in phase?
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Graduate Can a Photon be thought of as a bit?
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Graduate Uncertainty principle regarding a narrow optical fibre?
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Graduate Meaning of σ & π Bonds in Molecules Quantum Mechanics
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Graduate Past Uncertnity: Can We Calculate It?
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Graduate How can an asymptotic series give accurate results as in QED?
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Graduate Virtual particales and black holes.
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Graduate Quantum objects and the law of identity over time
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Graduate Why Does Planck Time Exist?
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Graduate Vacuum expectation value and lorenz (trans) invariance
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Graduate Forming Hydrogen wave functions with real spherical harmonics
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Graduate Understanding the Tensor Product Space: What is the Motivation Behind It?
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Graduate Self-adjointness of H, particular example
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Graduate What Challenges Arise in QM/QFT with Non-Separable Hilbert Spaces?
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Graduate Question about Interference Patterns in Kim Delayed Choice Eraser
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Graduate Texas A&M Photonless Communication
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Graduate Quantum physics explanation problem
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Graduate Proof of second quantization operators
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Graduate Understanding the Use of Controlled Not Gates in Quantum Computing
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Graduate The uncertainty principle and the measurement postulate
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Undergrad Is Zero Point Energy Truly Unattainable?
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Graduate Debye model in Statistical Physics
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Graduate Quantum Entanglement, and Information.
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Graduate Sakurai page 91: Simple Harmonic Oscillator, trouble understanding
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Graduate Understanding the renormalization group
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Graduate Renormalization procedure (Peskin and Schroeder)
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Graduate QM: Neutrino Polarization - Oscillation & Mass Polarization
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Graduate What do creation operators measure?
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Graduate Spontaneous parametric down-conversion and energy-momentum cons.
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Graduate [Double slit experiment] if we look back at slit, what we'll see?
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Graduate General relativity and quantum mechanics
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Graduate Measuring effective (renormalized) coupling constants
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Graduate Landau-Lifschitz : Photon helicity states
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Graduate Sakura page 85: how to do this proof?
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Graduate Can quantum operators be pictured in terms of wave packets?
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Graduate Gravity and the double slit experiment
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Undergrad A question about the double slit experiment
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Undergrad Uncertainty principle using 2 detectors
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Graduate Question about the double-slit experiment
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Graduate Dimension of Rays in Hilbert Space
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Graduate Schroedinger's cat from the cat's point of view
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Graduate The Holographic Universe: Dividing Reality into Bits
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Graduate Shortest wavelenght emmited by a black body
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Graduate Goldstone boson state, conserved current
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Graduate Interaction between Neutrons/Neutrinos
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Graduate Sakurai page 54: Is this a Taylor expansion?
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Graduate Delayed Choice Quantum Eraser Question
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Graduate Precise measurements in Quantum Mechanics
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Graduate Dimensional regularization and renormalization scale.
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Graduate What’s wrong with this EPR-Bell FTL Gedankenexperiment?
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Graduate Where does the energy come from?
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Graduate Can Free Fundamental Particles Absorb Photons?
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Graduate Double slit experiment with electrons
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Graduate What is the true nature of an atom and how can we visualize it?
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Graduate RG equation and invariance of the vertex function under scaling(Ryder)
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Graduate Quantum Mechanical Operators - A Question Or Two
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Graduate Understanding the Landau Pole Phenomenon in Quantum Field Theory
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Graduate Why is weak force short range action?
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Graduate Why don't quantum fluctuations cause us to fall through the floor?
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Graduate Tensor coupling and 6j/9j symbols
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Graduate What is the nature of sound from the quantum perspective?
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Winning Nobel Prize: Friend's Experiment to Prove Electron Not a Particle
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Graduate Modern Quantum Mechanics: J.J. Sakurai's eq. (1.7.31) Explained
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Graduate Forming the most general two qubit entangled state & parametrizing it.
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Graduate Antiparticles identical in qft
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Graduate Double-slit interference pattern measurement with entangled photons
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Undergrad Does a photon have energy if its mass is 0?
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Graduate Transmission and Reflection on a potential step
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Graduate What is the Connection Between Antiparticles and Vacuum in Physics?
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Graduate Derivation of Spin-orbit Coupling
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Graduate Para / Ortho Hydrogen (H2) Spins
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Graduate What is the difference between anti-particle & exotic matter
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Graduate Why wouldn't this experiment allow superluminal communication?
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Graduate Sakurai : Approximations in the construction of Quantum theory
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Graduate Is single particle interference explainable via entanglement?
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Graduate Unraveling the Mysteries of Intensity vs Wavelength
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Graduate Complete set of stationary solutions
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Graduate Product of three gamma matrices
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Graduate Polarization of photon-Peskin and Schroeder
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Undergrad Two general questions about wave functions
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Graduate Harmonic Oscillator: Energy Explained
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High School Uncertanity Principle in Macrocosm
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Graduate Rotation operator quantum mechanics
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Graduate Counterterms Feynman Rules Derivation
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Graduate Quantum Eraser Interference Patterns
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Graduate Wigners Theorem And Linerarity
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Graduate Nuclear charge and atomic orbitals
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Graduate Virtual photons and long range force carrier
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Graduate What does local causality mean?
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Graduate Heisenburgs Uncertainty Principle in a narrow tube?
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Graduate Is CPT-Invariance Sufficient for Lorentz Covariance and Locality?
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Graduate Planck's radiation law: Act of desperation
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Graduate Quantum mechanics probability
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Graduate Representation of Lorentz group and spinors (in Peskin page 38)
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