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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 Question about discussions around quantum interpretations
Undergrad The last step of this Green's function proof is not clear
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Undergrad Intersection of Condensed Matter Theory + High Energy Physics
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Undergrad Fine Structure Constant - 10 steps
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Graduate Does the Zeno effect freeze all the commuting observables?
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Graduate How Does Position Interact with Spin Angular Momentum in Quantum Mechanics?
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Graduate Question about commutator involving fermions and Pauli matrices
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Undergrad Correlation Matrix of Quadratic Hamiltonian
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Undergrad When do classical mechanics and electromagnetics stop working?
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Graduate Problem evaluating an anticommutator in supersymmetric quantum mechanics
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Undergrad Photoelectric effect and Saturation Current
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Undergrad What makes up the bare mass of elementary particles?
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Undergrad Question about the Photoelectric Effect and the Work Function of a Metal
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Undergrad Looking for resources to learn bra-ket notation
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Undergrad Looking For Help Understanding Bell's Theorem, Hidden Variables & QM
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Graduate First Order in Time Derivatives + Phase Space
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High School Definition of a random variable in quantum mechanics?
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Undergrad Hall Conductivity and Rotational Invariance
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Graduate Are there any hypercomplex time values?
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Undergrad Generic Form of Hermitian Matrix
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Undergrad What Causes Ambiguity in Wick Rotation for Time-Ordered Correlators?
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High School Can we say a photon doesn't exist until the wavefunction collapses?
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Undergrad Boundary conditions for the momentum space SE
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Graduate Wigner Weisskopf method for time varying Perturbation
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Undergrad Why is entanglement necessary in a quantum computer?
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Undergrad How does the quantum of action cause indeterminism?
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Undergrad Measurements and uncertainty principle
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Undergrad In the delayed-choice quantum eraser, why is a stepper motor used?
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High School Entangled quants inside a particle accelarator
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Undergrad How did Sommerfeld arrive at his quantum condition?
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Undergrad Why is Photon Energy Quantized in Terms of Sine Wave Frequency?
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Undergrad Force of an Electron on a Potential Wall?
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Undergrad Understanding the Dirac Delta Identity to Fetter and Walecka's Formula
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Undergrad Klein-Gordon equation and continuity equation
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Undergrad Problem with the polarization of entangled photons
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Undergrad Can AIs act as conscious observers?
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Undergrad Non-wave solution to wave equation and virtual particles
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Undergrad Where does the energy come from?
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Undergrad What Is the Smallest Change Detected by a Multiport Interferometer?
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Undergrad Trouble with Product of Green's Functions
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Undergrad Why do exponential functions occur outside of finite walls?
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Graduate "Nonclassical Advantage in Metrology" paper
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Undergrad Mass Dimension of Fields (Momentum space)
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Undergrad Need help understanding the first single attosecond pulse measurement
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Undergrad Can an atom absorb a photon, yet its total kinetic energy is decreased?
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Undergrad Lindbladian Jump Operators Condition
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Graduate Phase difference between electric and magnetic dipole moment
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Undergrad How Is the Mixed State Density Matrix Represented in Quantum Computing?
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Undergrad Density Matrix of Multiple Qubits
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Undergrad Does the Photon Play a Crucial Role in Quantum Mechanics?
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High School What is causing destructive interference in double slit experiment?
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Graduate Is entanglement also for time-like intervals?
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Undergrad Is entanglement a consequence of the singularity of the early universe?
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Undergrad Looking for resources about tunneling effect on two delta functional barriers
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Undergrad How Is the Integral from (3-22) to (3-23) Calculated in Quantum Mechanics?
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Undergrad Confusion about Scattering in Quantum Electrodynamics
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Undergrad About time-independent non-degenerate perturbation expansion
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Undergrad Magnetic flux through a superconducting ring
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High School Frequency of an EM wave in Classical and Quantum Physics
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Graduate How to draw the angles of the CKM matrix?
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High School Quantum Nonlocality or Non Counterfactual Definiteness?
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High School What is the size of a VHF photon?
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High School Why doesn't the electron "wave" collapse at the double-slit?
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Undergrad Quantum behavior experiment flawed?
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Undergrad Is it possible for a BBO crystal to produce an interference pattern?
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Undergrad Measurement and Thermal Effects Similar?
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Undergrad Recommendations for learning renormalization?
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Graduate Creation and annihilation operator
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Graduate Solving renormalization group equation in QFT
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High School Is Quantum Mechanics necessary for understanding electromagnetic phenomena?
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Undergrad Energies of bound state for delta function potential
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High School Searching for Quantum Mechanics Lecture on Delayed Choice Experiment
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Undergrad How to distinguish between diagonal vs horizontal/vertical polarization?
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Undergrad Point of Demarcation between Quantum and Classical Behavior
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Graduate Are irreversible processes absolutely irreversible, even given infinite time?
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Undergrad Is Calcite a parallel to the Stern-Gerlach experiment?
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Graduate Renormalized vertex functions in terms of bare ones
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Undergrad How does one time-evolve a quantum state with its kernel function?
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Graduate Quantization of real Klein-Gordon field (sign issues)
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Graduate Anti-commutation relation for quantized fields
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Undergrad Black Hole Fire Walls, Brick Walls, and the Casimir Effect
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Undergrad Impossible probability between theoretical possibility and reality
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High School Quantum Entanglement in Practice
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High School Does decoherence prevent 100% of quantum tunneling of macro object?
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Undergrad If we wait infinitely long, will macroscopic objects undergo quantum tunneling?
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Undergrad Can Electrons or Photons Exceed Light Speed?
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Undergrad Questions on the classical interpretation of (normal) Zeeman effect
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High School Wavefunction and Lorentz Invariance
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High School Preference for the notation used for the wave function?
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Undergrad In what chapter do Mehra and Rechenberg discuss Pauli matrices?
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Undergrad Could a quantum computer simulate any system based on different types of logic?
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Graduate Lagrangian in the Path Integral
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Undergrad Question about Stern-Gerlach experiment
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Undergrad Is my interpretation of the g-factor correct?
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High School Direct sum decomposition into orthogonal subspaces
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Undergrad Who was the first to make a Stern-Gerlach experiment with two magnets?
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Undergrad Normalizing factor of wave function
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Undergrad What Is the Difference Between Loss and Cost Functions in Quantum Computing?
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Undergrad Electrical Analog of Aharonov-Bohm Effect
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Undergrad Parallel transport and entanglement
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Undergrad When was the formula for the Stern-Gerlach experiment found?
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