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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

Is the quantum wave function a real object or a mathematical tool?
Graduate Energy Level Transitions, transition time for e- to change energy states in atom
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Graduate How is Eq. 31 Derived in the Foldy Wouthuysen Paper?
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Graduate Angular momentum ladder operators and state transitions
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Graduate Why won't this information sending work?
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Graduate What causes superpositions to collapse when particles are observed?
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Graduate Understanding Group Velocity for Wave Packets in a 1-D Particle in Box
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Graduate Feynman Diagrams: Does Distance Affect Electromagnetic Interaction?
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Graduate What is a virtual photon and how is it used in quantum field theory?
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Graduate Entangled particles and relativity
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Graduate Confusion (8) from Weinberg's QFT.(Lippmann-Schwinger eqn)
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Graduate Transformation properties of derivative of a scalar field
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Graduate So, does God play dice with the Universe or not?
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Graduate Wavefunction collapse and antisymmetry
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Graduate Phase and Gauge Transformations
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Graduate Conceptual underpinning(s) of the QM projection postulate
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Graduate Critique This Simple Faster Than Light Mechanism - Possible?
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Graduate What is the Origin of Spin 1/2 in Quantum Field Theory?
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Graduate Spin in Fundamental Particles: Intrinsic Angular Momentum & Atomic Orbitals
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Graduate Understanding energy transfer during the process of entanglement
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Graduate Gravitational Field Paradox Explanation?
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Graduate Does hamiltonian/energy eigenstate always exist?
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Graduate Why are the only possible values of an operator its eigenvalues?
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Graduate [quantum tunneling] Debate with a friend, am I right?
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Graduate A simple definition to Non-Relativistic Quantum mechanics?
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Graduate Commutation Relationships and Operator Functions
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Graduate Simultaneous measurement article
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Graduate Hermitian operator <=> observable?
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Graduate Constructing quantum operators
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Graduate Interference of two independent electron beams?
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Graduate How to expand the average <(N - <N>)^2>
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Graduate Complex Vector Space Analogy To Quantum Mechanics
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Graduate Heisenberg uncertainty principle
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Graduate Coherent state of photons in a laser
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Graduate Some thoughts on the hidden variables interpertation
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Graduate Can Quantum Theory Apply to Large-Scale Universe Phenomena?
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Graduate Calculating Secondary Electron Energy After 2 MeV Photon Scattering
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Graduate The electron - couple questions
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Undergrad Understanding the Quantum of Light: The Mystery of Photons Explained
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Graduate Double Slit Experiment Question
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Graduate Determinism & Scale: Quantum Effects on Macroscopic Objects
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Graduate Completeness relation for polarization vectors
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High School What is the box in particle in a box?
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Graduate Is commutativity transitive for non degenerate eigenvalues?
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Graduate Magnetic moment of the electron and spin
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Graduate What is Isospin and How Does it Relate to the Strong Force?
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Graduate Wave-Particle Duality: Random Photon Emission
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Graduate Is objective reality possible under orthodox QM?
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Graduate Change in fine structure constant
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Graduate How did Schrodinger's model improve Bohr's model?
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Graduate Stationary States and time-independent states (aren't they the same?)
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Graduate Quantum particle in a rigid box with 2 given wavefunctions solving for energies
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Graduate What does a deBroglie wave look like?
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Graduate Amount of energy required to change the spin of a photon
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Graduate Probability of finding particle
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Graduate Bras and kets vs. Einstein summation convention
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Graduate Quantum Distance? (See me derive it.)
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Graduate Is the Hydrogen Energy Level Formula Truly Degenerate in j?
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Graduate Why must Quantum Computers be reversible?
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Graduate Could a Semiconductor Plate Alter the Casimir Effect?
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Graduate The Origins of Quantum Physics
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Graduate What happens to the wave function after it collapses?
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Undergrad Bohr model electron wavelengths
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Graduate How Do Quantum Statistics Affect Energy Level Degeneracies in a SHO?
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Graduate Angle Between Spins: Alpha & Beta | Why?
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Graduate Looking for suggestions for an experiment involving Quantum theory and Biology?
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Graduate Quantum Computer, how to actually build one?
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Graduate Schrodinger equation, lowest potential energy
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Graduate Sign confusions on CFT (yellow book) Page 29
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Graduate Wave Function Question: Understanding |0,f\rangle & \hat{c}_{\vec{k},\sigma}^+
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Undergrad Heisenberg s uncertainity principle
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Undergrad Where does the energy for electron movement in orbitals originate?
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Graduate Measuring Electron Position with Photon: The Uncertainty Principle
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Graduate Photon Wave Packet Envelope Question
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Graduate Understanding Tensor Integration Notation for 4-Dimensional Space
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Graduate The picture in the addition, you see one integral equation and I have
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Graduate Are Spin and Quantum States Independent in Wave Functions?
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Graduate Spontaneous Symmetry Breaking -Conceptual Question
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Undergrad Simple harmonic oscillator- the probability density function
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Graduate Trace of a Matrix: Definition & Analysis
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Graduate Why can the spin and the angular momentum transform to each other?
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Graduate Limit to SHO / EM field analogy
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Undergrad Are Pauli Matrices Unitary and Do Their Complex Conjugates Match?
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Graduate Understanding the Disappearance of 2*A^*<A> and 2*B^*<B> in Derivations
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Graduate Why Do Photons Disappear in a Perfectly Sealed Box?
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Graduate Why Does Quantum Mechanics Use Complex Probability Amplitudes?
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Graduate Green's function for Klein-Gordon equation in x-space
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Undergrad Kenetic Energy of a Particle due to Speed
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Undergrad Why does electromagnetic radiation (energy) excite electrons?
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Graduate Do Electron Holes Have Spin Angular Momentum?
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Graduate Can we measure the effective mass of charge carriers using a centrifuge?
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Graduate Need clarification on quantum indeterminism
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Graduate Entanglement across different frames of references
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Graduate Questions about information in QM
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Graduate Unitarity of Time-evolution Operator
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Graduate Encyclopedia of Gamma Matrix Representations?
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Graduate A couple of easy questions related to quantum mechanics
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Graduate Time Dependence of Expectation Values
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Graduate Understanding Normalization Factors in Scientific Research
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Graduate Could Electrons Exist in 4 Dimensions?
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Graduate What is Heisenberg Uncertainty Formula?
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