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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

Undergrad One does not “prove” the basic principles of Quantum Mechanics
Undergrad Angular Momentum, classical vector analogy?
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Canadian PM 'Explain's' Quantum Computing
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High School What constitutes a measurement of which slit - double slit
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Undergrad Where exactly does QFT differ from QM? (in their formalisms)
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High School Quantum definition of information
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Undergrad Quantum numbers - Total Energy and Orbital Momentum
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High School Disentanglemt of a system of particles
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Undergrad Can Decoherence Create a Superposition of Life and Death?
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High School What is ¨unpolarized¨ light exactly?
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Undergrad Spin 1/2 particle confined to an infinite annular region.
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High School Has the Casimir effect been directly observed?
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Graduate Potential Energy Curve for Ammonia Inversion?
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High School About the Lorentz invariance of Planck constant
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Graduate Is a Hadron a Quasiparticle in Condensed Matter Physics?
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Undergrad Why is the spin of this state equal to one?
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Graduate Symmetry considerations between observer and observed in QM
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Undergrad Determination of electron energy in the 2 slit experiment
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High School Alpha is 1/137th of what? (Fine Structure Constant)
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Undergrad Understanding the Energy Gap and Topology in Topological Phase Transitions"
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Undergrad What is meant by the terminology "single particle state"?
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Undergrad Difference between superposition and mixed state
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Undergrad Where Does Light Come From and How Is It Produced?
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High School What causes recombination of virtual particles?
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High School Is it possible that god does not play dice with the universe, as Einstein said?
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Undergrad Eigenvalue degeneracy in real physical systems
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High School Silly questions about the behaviour of photons
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Graduate What kind of coherence do we have in the ground state of a harmonic oscillator?
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High School FTL communication by Quantum Entanglement
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Undergrad Quantum jitter vs thermal jitter
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Undergrad Hydrogen Atom Photon Emission Wavelength Formula
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Graduate Degenerate perturbation theory -- Sakurai
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Undergrad Polarization entanglement - multiple tests
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High School How Does Environmentally Induced Decoherence Affect Quantum State Reduction?
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High School Is this QM learning pathway sound?
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High School Flashing In And Out of Existence?
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High School What's the confidence level of quantum to macro behavior?
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Undergrad The Debroglie Relation and SR?
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Undergrad A bit confused about Schrödinger's cat
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Graduate How to derive general solution to the Klein-Gordon equation
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Undergrad The Heisenberg cut demystified
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High School Has the existence of Hilbert Space been proven 100%?
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Undergrad Understanding Spinor Rotations
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Undergrad Tensor Product in QM: 1D vs 3D Hilbert Spaces
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High School Bohr vs Einstein: is the Moon there when we are not looking?
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Undergrad Weinberg LN in QM (Section 3.5): Momentum operator
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High School Photon and half-silvered mirror
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High School If all particles were different sizes, would the speed of light stay the same
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Undergrad Why do we require locality in quantum field theory?
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High School Looking for Wilhelm Wien's original paper
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Graduate Single qubit coherence time record
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High School Photoelectric Effect under cutoff frequency
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Undergrad Question regarding the Dirac delta function
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Graduate Fun with Deltas and ##L^2##: Physicists vs Mathematicians
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Graduate Why are low pressure gas discharge lamps thermal sources?
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Graduate Is Rest Mass a subjective quantity?
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High School What's an electron doing between interactions?
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High School Thought experiment violates Heisenberg? (of course not)
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High School Uncovering the Truth: Non-Dualistic Particles Revealed
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Undergrad What specific momentum should be used in the matter wave?
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Undergrad Photon energies from Planck-Einstein: confirmed in practice?
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Undergrad Understanding Bra-Ket Notation in Quantum Mechanics
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Undergrad Direction of magnetic field measured by 2 coherent electrons
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Undergrad Feynman Lecture Vol III Ch. 8 Question -- Heisenberg matrix picture
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Undergrad Beta Radiation: Quark Transformation & Charge Change
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Undergrad Is Ψ2Px an Eigenfunction of L2 or Lz in Quantum Mechanics?
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Undergrad What Is the Tunnel Effect in Time-Independent Quantum Mechanics?
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High School How does entanglement work for spin states?
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Undergrad Why does the kinetic operator depend on a second derivative?
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Undergrad Why is the KE operator negative in QM?
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Undergrad If operators commute then eigenstates are shared
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Undergrad Probability current in positive finite square potential
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High School What is quantum equation of single photon?
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Undergrad Photons on a CCD Vs. the magnetic or electric vector?
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Undergrad Angular momentum ladder operator derivation
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Undergrad How can I confirm Lz=ħ,0,-ħ using operators and eigenfunctions?
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Undergrad Probability distribution plots
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Undergrad Is the wavefunction a physical quantity?
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Undergrad Transition probability and superposition
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Undergrad Demerits radial distribution functions
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Undergrad Heisenberg Uncertainty Principle & Wave Function
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Graduate Quantum Entanglement Harvesting
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Undergrad When can one clear the operator
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Undergrad Rotational-Vibrational Energy state equation derivation
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Undergrad Width of a stationary wave packet as a function of time
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High School Mixed states V superposition V linear combinations?
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Undergrad Square of absolute value of amplitude for a single photon
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Graduate Integration of Schrodinger equation
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Graduate Hamiltonian and constant potential
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Undergrad Question about Quantum teleportation
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Undergrad Quantum Spin Liquid: New State of Matter Explained
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Graduate Performing Bell State Measurement in Teleportation
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Undergrad Density matrices, pure states and mixed states
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Undergrad What is an electron's orbital angular momentum?
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Undergrad A question about reduced density matrices
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Undergrad Technical question about modern Double Slit w/ one photon
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Undergrad Bound electrons vs. free electrons
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Graduate Is Poincare symmetry the real thing?
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Undergrad Status of Adami's solution to Firewall paradox?
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High School What causes reflection to occur in highly absorptive materials?
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Undergrad The most general state function
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