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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 New interpretation for the double slit experiment with light?
Graduate Cross Section Calc. in Peskin QFT - How to Deal with g^μν.g_μν?
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High School Illusion that shell, subshell and orbitals are the same
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Graduate Ballentine-sections 3.2 and 3.3
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Graduate John Wheeler's Legacy: A Look at His Impact on Physics
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Graduate Can we violate Bell inequalities by giving up CFD?
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Graduate Why do electrons have band widths or energy bands?
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Graduate Eigenvalue of lowering operator
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Graduate What's the unitary matrix equivalent to a beam splitter?
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Graduate Transmission and Reflection amplitude
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Graduate Temporary dipole moments and energy conservation
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Graduate Ballentine's (3.49) and (3.50)
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Graduate How Does QED Explain the Electromagnetic Force
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Graduate Matrix form of Density Operator
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Graduate Equipartition of energy in Rayleigh-Jeans law
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Undergrad Hydrogen Spectra: Absorbtion in White Light Explained
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Graduate Hamiltonian defined as 1st derivative
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Graduate What actually triggers the collapse of the wave function ?
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Graduate Quantum Mechanics - Induction Method
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Undergrad Is the Big Bang Theory the end of time, not beginning?
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Graduate What happened to the denominator?
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Graduate Excitation of two-atom state by single photon : FTL hope?
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Graduate Potential energy in strong- and weak- nuclear interaction
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Graduate Schrödinger Eq: Questions on Mass, Uncertainty & Pi
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Graduate Can future events affect the past?
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Graduate Comments - How Fundamental is the Arrow of Time?
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Graduate Simple Harmonic Oscillator Zero Probability Points
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Graduate What is the Concept of Colour Force in Quantum Physics?
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Graduate Indivisible units of time and the quantum eraser experiment
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Undergrad Why is information that cannot be seen called entropy?
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Graduate What is the derivation for the vacuum density of states in the Purcell effect?
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Graduate Calculating the Average Value of Square Spin for a Composite System
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Graduate Are Neutrinos Tachyons? The Mystery of Massless Particles Explained
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Graduate Do we need quantum mechanics to explain biological stuff?
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Graduate QM Sankar 2nd edition -- gram schmidt process on example 1.3.2
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Undergrad Is matrix hermitian and its eigenvectors orthogonal?
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Graduate Double Slit Question: Path Information & Observer's Experiences
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Graduate Unruh Effect: Instantly Gaining Information from Acceleration
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Graduate Clarifying the Meaning of "Random" in Quantum Physics
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Graduate Quantum conditions for position and momentum operators
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Graduate What is the Schmidt Rank and Its Role in Measuring Entanglement?
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Graduate What is the wave function for the whole system/atom ?
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Graduate Single electron wave packet in Fock space?
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Graduate Heisenberg Uncertainty Principle clarification
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Undergrad Bohr's Hydrogen Model: Does Electron Absorb All Energy?
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Graduate Schrödinger equation for 2 particles
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Graduate How do we solve for equation 1.8.7 on page 33 of Shankar's QM 2nd Edition?
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Graduate How can potentials be well-defined without violating U.P.?
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Graduate Derivation of Time Dependent Schrodinger Equation
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Graduate Quantum Zeno Effect: What is the argument?
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Graduate Measuring Rabi Oscillations in a Two State Atom
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Undergrad What Is the Mass Defect of a Hydrogen Atom?
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Graduate Understanding the Energy of Photon Pulses in the James-Cummings Model
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Graduate Orbital Angular Momentum: Need at least 2 particles?
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Graduate Gravitation and Decoherence : New Scientist Article
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Graduate Different Ways of Trapping A Single Atom?
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Graduate Understanding the Fixed Energy of Electrons in Bohr's Orbit
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Graduate Electron double slit experiment
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Graduate What Does 0.1 Expected Photon Per Pulse Mean in Quantum Cryptography?
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Graduate Double slit interference from antenna
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Graduate What Are the Key Differences Between 3D Nano-Materials and Bulk Materials?
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Graduate Dimensionality of the wavefunction in relative state
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Graduate Newbie question about quantum physics
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Graduate Assume or discover? Is this a false dichotomy?
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Graduate Quantum Spectrum of a Hamiltonian with Linear Potential
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Graduate Does expansion a(t) affect QM probability density?
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Graduate Measuring Electron Recoil from Photon Emission: Experiments & Methods
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Graduate Photons from two sources versus one source
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Graduate Quantum Entanglement: Experiments Showing Limitless Distance
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Graduate Bounds of Integration for Random Oriented particle
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Graduate What is meant actually by superposition?
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Graduate Measurement problem in classical probability
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Graduate What is the global and local symmetry in gauge theory?
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Graduate What is the relationship between photons and electrons in quantum field theory?
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Graduate The relation between classical from quantum vs measurement perspective
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Graduate If probability wave is true wouldn't there be flickering?
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Graduate Quantum field theory questions?
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Graduate Compute subband structure of graphene
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Graduate What if dark energy is just orphan energy floating around in the universe?
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Graduate What are some good pedagogical QM papers?
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Graduate Relativistic Boltzmann (including QM) equation from entropy?
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Graduate How Is the Cross Section Related to the Imaginary Part of the Action?
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Measurement Rules Quantum Universe
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Graduate Heisenberg uncertainty principle calculations
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Graduate What is renormalization exactly?
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Graduate How far do W+ - and Z guage bosons travel in m?
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Graduate What Dictates the Spin Direction of an Electron?
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Graduate General solution for the time-dependent Schrödinger equation
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Graduate Delayed choice experiment article on science alert
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Graduate Question about harmonic poential trap
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Graduate Measurement, Quantum Wierdness and Single-Effect Events
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Graduate Understanding Photon Absorption in Radio Wavelengths: 3 Key Questions Explored
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Graduate Can Electrons Bounce Off Voltage Potentials?
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Graduate Can Quantum Physics Redefine Our Understanding of Free Will?
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Graduate Quantum State of Cards: Is the Top Card Set Before Viewing?
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Graduate Is there a quantum theory of other entities besides particles and fields?
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Graduate Two different ways? (probability denstities and currents)
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Graduate When are isomorphic Hilbert spaces physically different?
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Graduate Position measurement in Non-Relativistic QM
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Graduate Bell's Inequality - A misintepretation of probability?
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Graduate How Can You Access Time Reversibility in Quantum Mechanics?
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