Quantum Physics Forum

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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 Universal quantum physics
High School Penrose collapse and Superposition
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Undergrad Is there any operator for momentum in terms of t?
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High School CPT Symmetry: Proving the Theorem & Lorentz Transformation
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Undergrad Limit to the max size of a Nucleus
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Undergrad Vanishing Hamiltonian for quantum path integral
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Graduate Feynman rules for a 0-dimensional field theory
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Undergrad Path integral and causally disconnected parts of universe....
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High School Quantum Oscillator States: Is the Ladder Operator Enough?
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Graduate Function integration of a Gaussian integral
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Graduate Why quantum mechanics looks so different from classical one?
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Graduate How to Calculate Probability using Density Operator?
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Undergrad Anderson Localization and general disorder of matter?
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High School Can position eigenstates be considered qubits in quantum computing?
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Undergrad Simon's Algorithm: Solving the Mystery of f(x+s)
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Undergrad How can you detect which path an electron will take in a double-slit experiment?
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Graduate Utility of path integral formulation of quantum mechanics
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Insights Why Is Quantum Mechanics So Difficult? - Comments
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Undergrad Probability of one-photon loss from a cavity
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Undergrad Why is the Kinetic Energy Operator Differentiated Twice Instead of Squared?
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High School Question about photocell experiment
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High School Does QM allow for entropy decrease of a closed system?
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Undergrad Why Is the Limit ##\hbar \rightarrow 0## Called the Semiclassical Limit?
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Graduate Where does statistical physics/mechanics fit in with QFT,GR?
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Undergrad Beam in specific photon number state?
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High School Understanding Pure States in Quantum Mechanics: From Atoms to Electrons
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Undergrad Localization of particles and disorder at the quantum level?
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Undergrad Wave particle duality and phonons
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Graduate Projection trick to obtain time-ordered correlator
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Graduate Partition function in quantum field theory
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Graduate Path integral computes time-ordered products
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Undergrad Why can't we use negative values of n in the 1D particle in a box system?
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Graduate 3D oscillator trapped away from centre
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Undergrad Green's Function: Hamiltonian and Density of States Explained
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Undergrad How does Bell make this step in his proof?
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High School Collision of identical fermions
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Graduate What is the meaning of this equation?
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High School How Does DeBroglie Wavelength Influence Our Understanding of Dark Matter?
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Undergrad The typical and the exceptional in physics
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Graduate If light is quantized, why are EM spectrum and Blackbody spectrum continuous?
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Undergrad Is Light a Particle or a Wave: What’s the Real Answer in Modern Physics?
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Undergrad QFT for the Gifted Amateur Question (2)
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Undergrad Does the wavefunction evolve only to the future?
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High School Is wave particle duality really wrong?
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Undergrad Are there other types of operators that can produce real eigenvalues?
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High School Uncertain position and momentum -- A property of particles?
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Undergrad Origin of geometric similarities between multipoles & AO's
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High School How does Quantum Teleportation Work?
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High School Is Consciousness Influencing Branch Selection in Quantum Decoherence?
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Graduate Quantum Field Theory for the Gifted Amateur: Fourier Transforms & Excitations
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Undergrad Spin Eigenvectors: | + > vs | - >?
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Graduate Mathematical Format of Lagrangian vs Symmetries
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High School How do I calculate electron acceleration by gravitational waves
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Undergrad Equation Name & Description: What Is It?
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Graduate Can we derive quantification of energy mathematically?
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High School Virtual Particles; Making the Universe an Open System?
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Undergrad Plane wave solution to Dirac equation
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Undergrad Schroedinger Equation from Variational Principle
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Undergrad Scientific American Entanglement Movie
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High School Why do quantum effects arise due to microscopic size?
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Graduate Experimental values for screening constants? (Slater rules)
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High School Help with relationships in equations ΔX/L = λ/d?
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Undergrad Are we in a simulation and quantum tunneling?
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Undergrad Can we find a quantum analogue of the Bertrand paradox?
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High School Why the square of the wave function equals probability?
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Undergrad Degenerate Perturbation Theory
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High School How and why do quantum fields interact with each other?
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Undergrad Eigenstates of two Coupled Harmonic Oscillator
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High School Projection Operator: What Math Operation Does it Represent?
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Undergrad Is dψ/dx zero when x is infinite in QM?
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Undergrad Schrödinger's Equation Infinite Potential Well
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High School How is the Hydrogen Atom's Wave Function Separable?
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High School All the Universe belong to Quantum Mechanics?
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Undergrad QFT for the Gifted Amateur Question?
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Undergrad Planck's constant and quantization of energy
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Graduate Does spacetime lose its determinism in third dimension?
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Undergrad A two-fold quantum delayed-choice experiment
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Undergrad Classical Mechanics v Quantum Mechanics
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Undergrad What causes Heisenberg's uncertainty principle?
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Undergrad Clarification virtual photons, real photons
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Undergrad Hidden Variables in Bell Experiments: State or Detector Dependent?
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High School About the delayed choice quantum eraser experiment
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High School Double Slit Simulator: Online Visualization & Path Variations
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High School Understanding Spin: A Basic Explanation for Beginners in Physics
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Undergrad Debunk these news stories (QM Radar)
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Graduate Confusion about Derivation of Vacuum Rabi Rate
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High School Random transfer in entanglement
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High School The Universe: A Planck Clock Exploration
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Undergrad CFD - Counterfactual Definiteness
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Undergrad What Is The Nature Of Absorption Randomity?
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High School Quantum superposition of Coulomb potential
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Undergrad Harmonic Oscillator in 3D, different values on x, y and z
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High School Can Gravitons Interact with Magnetic Fields and Explain Light Bending?
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High School The electron field as values of what quantity?
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Undergrad Strong force and superposition
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Undergrad Eigenvalues, eigenvectors and the expansion theorem
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High School Uncertainty Principle - uncertainty in mass.
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High School Photon Dimensions: Wave or Particle?
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Undergrad When is a given state an eigenstate of a given operator?
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Undergrad QM has never made a prediction contradicted by experiment
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High School Chinese quantum experiment - explain please
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