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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 On computing quantum waves exactly from classical action
Graduate Spontaneous parametric down-conversion practicalities
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Graduate How Do You Compute Derivatives in Dirac Notation with Mathematica?
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Graduate How Close Are We to Reaching the Landau Pole in QED?
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Graduate Is there an intermediate 'particle' to pair production?
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Undergrad What is Touching: Examining the Microscopic Level
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Graduate Understanding the Equation 2.14 and its Application in Srednicki's Theory
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Graduate Collapse of Pauli exclusion principle
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Graduate Why do subatomic particles act the way they are?
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Graduate How does the substitution in equations 3.2.4 and 3.2.5 work?
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Graduate How is Hardy's Paradox resolved in quantum mechanics?
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Graduate Combining Hamiltonians for a Two-Particle System
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Graduate Angular momentum and hydrogens atom
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Graduate Some confusion about Ballentine Sec 3.3 Generators of Gallilei Groups
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High School Atomic Energy Levels: Discrete vs Continuous
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Undergrad Photon Generation Questions and Answers
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Graduate What is a 'magnetic substate'? (Magnetic-Optical Traps)
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Graduate Is Quantum Physics the theory of everything if
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Graduate Is the concept of degeneracy in quantum states always applicable?
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Graduate Quantum mechanical resistivity
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Graduate Consider parity then it is no longer enough to talk about two spinors
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Graduate Annihilation - matter/antimatter
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Graduate Research on Black Hole Questions: Membranes vs Non-String Universe
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Graduate How Do Holes and Time Influence Calabi-Yau Manifolds in String Theory?
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Graduate Point Particles vs. String Theory
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Graduate What Is the True Nature of Vacuum Space in Quantum Mechanics?
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Graduate Is Quantum Mechanics Tried, True, Wildly Successful, and Wrong?
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Graduate Understanding Dirac Notation: A Simplified Explanation for Scientists
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Graduate How Do Gravitons and Photons Compare in Quantum Theory?
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Graduate How Does the Infinite Potential Well Illustrate the Uncertainty Principle?
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Graduate Does Electron Superposition Eliminate Angular Momentum?
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Graduate Superpositons of a uranium atom
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Graduate Quantum Teleportation Research: Particles & Distances
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Graduate Discretization of Lz: Does m Have to Be Integer?
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Graduate Wave Equation in 2 Dimensions - Basic
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Graduate SU(2) in Standard Model and SUSY extensions
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Graduate Massless Particles: Gauge Bosons, Photons & Gluons
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Graduate What is the advantage of the truncated wigner approximation?
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Graduate How do renormalization and dressed particles eliminate self-energy?
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Graduate Uncertainty of a single photon in light scattering question
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High School Do Electrons in Higher Energy Orbitals Move Faster Than Those in Lower Ones?
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Graduate What is an Eikonal Factor in QED and QCD?
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Graduate Polarization Eraser & Entanglement
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Graduate Question about the Klein Gordon Propagator
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Graduate Density Matrix Doubt: Can Coherance Be Zero?
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Undergrad Quantum Chemistry vs Physics: A Student's Dilemma
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Graduate How to solve generalised eigenvalue problems?
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Graduate What is the true nature of vacuum energy in quantum physics?
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Graduate Wanted: quotes that encourage thinking of experiments instead of measurements
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Graduate The significance of commutation
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Graduate Quantum Computing: Find People With Knowledge & Experience
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Graduate Quantum Gravity and time's arrow
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Graduate Is Weak Isospin Conserved in Particle Physics?
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Graduate Quantum Mechanics and Special Relativity (violations)
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Graduate What is the value of the fine structure constant at Planck energy?
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Graduate Commuting operators => Common eigenfunctions?
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Graduate Entanglement, causality and local realism
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Graduate How does CMBR differ from ether (SR self study - Question from W. Rindler)
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Graduate Transmission function(probability) T(E) in tight binding
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Graduate From Cartan's Theory of Spinors, x1^2 + x2^2 + x3^2 = 0
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Graduate How is Single Photon Polarization Determined in Free Space?
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Graduate What does the eigen equation in quantum mechanics mean physically?
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Graduate Does Multi Path Integral Formulation Violate Special Relativity?
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Graduate Poincare-representation of majorana spinor
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Undergrad Compton effect vs photolectric effect
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Graduate What would be outcome of experiment?
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Graduate Questions on chapter 95 in Srednickis QFT book, Supersymmetry
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Graduate A pair of 2D harmonic oscillators at a point and Dirac eq.
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Graduate Gauge invariance of superpotential
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Graduate Electron Orbit: Exploring Kenneth W. Ford's Quantum World
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Graduate Relation between decay rate (lifetime) and spectral width
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Graduate Understanding Ansatz in Quantum Mechanics: Types and Applications
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Graduate Quantum Mechanical analogy of Newton's third law
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Graduate Question about a harmonic oscillator integral
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Graduate Photoelectric effect and light polarization in Wikipedia
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Graduate Why fundamental quantization of energy is hv?
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Graduate KP 8 Band Model: Exploring Quantum Well Structures
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Graduate Pre-requisites for path integral formulation?
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Graduate Operator in exponential function and generating function
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Graduate Massless representations of the Poincare group
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Graduate Derivation of Uncertainty Princple
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Graduate Why do photons have no rest mass and cannot have a charge?
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Graduate Difficulties in Canonical Quantization and Tensor Relations in Elementary QFT
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Graduate What Is the Schwarz-Hora Effect and Its Implications on Quantum Mechanics?
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Graduate A mental picture of entanglement?
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Graduate Do Weyl Spinors Have Well-Defined Helicities Across Different Masses?
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Graduate Normalization of Wave-Function
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Graduate Is the principal objection to decoherence thermodynamical?
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Graduate Uncertainty principle in classical mechanics boundary
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Graduate What is the Derivation of the Schrodinger Equation for Matter?
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Graduate Quantum Kinetic Theory by M. Bonitz: Traces over Commutators
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Graduate Can BECs Show Us Decoherence in "Slow Motion"?
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Graduate Quantization of Orbits: Explained
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Graduate How Are Allowed Wave Vectors Calculated in Carbon Nanotubes?
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Undergrad Weak and strong interaction are attactive or repulsive force?
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Graduate Basic question on a vector superfield
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Graduate Black hole laser or condensate?
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Graduate Super-position / Duality Physically Real?
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Graduate The Significance of Decoherence in the Quantum-to-Classical Transition
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Graduate Beta Function for QED: 20/9 or 8/3?
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Graduate Understanding Counterterms: Demystifying Srednicki's Equation 9.25
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