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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

A question about quantum entanglement
Graduate Time dependent perturbation theory
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Graduate Energy levels for a different plancks constant
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Graduate Density Matrix (pure state) Property
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Graduate Understanding Schrödinger's Cat Experiment and the Many Worlds Interpretation
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Graduate Planck's Inspiration to Solve Blackbody Radiation
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Graduate Commute Operators: Hi Niles - Find Out Now
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Graduate Spin, Anti-matter and all that jazz.
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Graduate How does interacting Lagrangian have form of product of fields?
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Graduate Grover's Algorithm/Superposition?
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Graduate Who Can Apply the Operator on a Wave Function to Measure an Observable?
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Graduate Energy: Discrete or Continuous
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Graduate Basic question about how spin changes in time
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Graduate Symmetry factors (Srednicki, figure 9.11)
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High School If we saw x-ray waves could we see the inside of the objects?
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Graduate Quantization of Klein-Gordon Field
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Graduate Weak Electron Interaction: Virtual Photon Effects?
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Graduate What is the significance of the E/M ratio in modern physics?
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Graduate Quantum Mechanics Questions: Superposition, Bohm Mechanics
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Graduate Question about the uncertainty principle?
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Graduate Puzzled about electromagnetic field behaving like oscillators
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Graduate Srednicki Bar Notation: Understanding (39.8)
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Graduate Pauli exclusion principle between 2 identical fermions
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Graduate What is the difference between left and right Weyl spinors in particle physics?
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Graduate Why the discrepancy in muonic H Bohr radius? 285 fm or 256 fm?
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Graduate No uncertainty principle for scalar particles?
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Graduate Can anyone confirm the ground state Bohr radius for muonic hydrogen?
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Graduate Is There a Contradiction in Weinberg's QFT Book on Simultaneous Eigenstates?
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Graduate Can Quantum Entanglement Solve the Mystery of Quantum Gravity?
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Graduate Wavefunction really like a wave?
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Graduate What Experiment Demonstrates the Particle Behavior of Electrons?
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Graduate Spin-2 Particles & Representations of SO(3)
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Graduate Understanding the Two Types of Density Operators in Quantum Mechanics
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Graduate Regarding normalization of the eigen basis vectors
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Graduate Is Space Quantized in Electromagnetic Fields?
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Graduate Can I Calculate Traces and Cross Sections in QED Using Gamma Matrices?
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Graduate Understanding Pauli X Matrix in Z & X Bases
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Graduate Newton-Wigner operator for K-G filed
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Graduate Solving the Dirac Equation for the Hydrogen Atom
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Graduate An identity for functions of operators
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Graduate Questions about the Photoelectric Effect
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Graduate Measuring one slit in double slit experiment
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Graduate Deep space Communication hypothetical question
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Graduate Can weak interaction be defined as a force related to distance between objects?
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Graduate Understanding Matter Waves and the de Broglie Hypothesis in Quantum Physics
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Graduate Worm Hole Idea: Electron talk at Great Distance
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Graduate Equalities for Paulimatrix averages
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Graduate Annihilation Operators: Prove af(a^\dagger)|n>=df(a^\dagger)/da|0>
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Graduate Could Centripetal Force Be the Key to Understanding Gravity?
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Undergrad Orbitals and Shells: Explained
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Graduate Ryder, QFT, 1985, pg. 40, Eq. (2.69) K = sigma?
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Graduate Proving "If f is Simultaneously an Eigenfunction of L^2 & L_z
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Graduate Displacement operator for coherent states?
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Graduate The Hydrogen Atom (Schrodinger vs original Bohr theory)
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Graduate Wave Formula by complex analysis
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Graduate Double Slit Experiment: Q&A on Photon Detection
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Graduate Can Entangled Particles Still Show Interference in Quantum Experiments?
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Graduate Deck of Cards and Planck Time?
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Graduate Second Quantization: Explaining Creation/Annihilation Operator Transformation
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Graduate Probability of finding a state
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Graduate Can't find that on the dictionary
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Undergrad Maximum detectable wavelength of a photoresistor
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Graduate Do Commuting Operators Always Share a Common Basis of Eigenvectors?
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Graduate Ryder: QFT: 1985: pp. 34-36: SU(2) and O(3)
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Graduate Is a Radio Wave Raser Feasible and How Would It Function?
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Undergrad Energy Levels: What Happens if First Level Contains More Than 2 Electrons?
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Graduate Uncertainty principle and double-slit interference?
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Graduate Quantum Mechanics - Ritz variational principle
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Graduate Decoherence over long distances - thought expt
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Graduate Is QM Phase Inherently Relativistic?
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Graduate What means 'coherence' in quantum mechanics?
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Graduate Wavefunction of Macroscopic Objects
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Graduate Proving Unachievability of Absolute Zero: Uncertainty Principle
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Graduate Entanglement and two particle system
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The reality of the quantum world - article
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Graduate Question about quantum superpostion
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Graduate Is the harmonic oscillator Hamiltonian an unbounded operator?
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Graduate In principle limitations of hidden variable theories
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Graduate Entaglement and hidden variables
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Graduate Optical Transitions: Free Info on Spontaneous Emission & Rabi Frequency
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Graduate Adibatic Approx.(i.e., Born-Oppenheimer)
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Graduate What is a 'representation' in Field Theory
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Graduate Is it possible a virtual photon is massive particle?
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Graduate What does Wikkepedia mean when they talk about Quantum tunnelling
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Graduate The conjugate of a Wave-Function
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Graduate Why is psi equal to psi' in vector expressions in QM?
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Graduate Composite Bosons: Understanding Their Behavior at Near Absolute Zero
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Graduate Why are the transitions in a Caesium atom called D1 and D2?
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Graduate Methods of ionisation/excitation
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Graduate How to Calculate Second Order Correlation from Master Equation?
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Graduate Leó Szilárd invented a feedback protocol1
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Graduate Dirac Spinor Algebra: Simplifying Expressions
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Graduate Is there always a real solution for every real Hermitian eigevalue problem?
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Graduate Can Single Photon Beams Exhibit Coherence?
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Graduate Question about Dr. Chinese's example of Bell's Theorem
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Graduate Quantized Energy Levels: Understanding the Basis of Schrodinger's Equation
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Graduate Calculating <\chi_3|H|\chi_3> w/ Dirac Notation Algebra
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Graduate Does this expression has an exact solution?
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Graduate Exploring Quantum Theory: Schrödinger's Cat & the Many-Worlds Interpretation
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Graduate Quantizing the Klein-Gordon equation
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Graduate Is there some reverse of annihilation?
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