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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

Graduate Understanding Barandes' microscopic theory of causality
High School Antiparticles moving opposite direction in time?
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Undergrad Double slit experiment with observer
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Undergrad Understanding the Derivation of the Ginzburg Criterion for the Ising Model
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High School Are Schrodinger's cat and the double slit experiment the same idea?
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High School Schrödingers cat, is it just mumbo-jumbo?
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Graduate Relationship between bare and renormalized beta functions
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Undergrad Normalization of wave functions
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Undergrad Is the photon field a vector field and a gauge field?
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Graduate Quantitative description of successive Stern-Gerlach measurements
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Undergrad Most Likely Position of an Electron
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Undergrad Commutators, operators and eigenvalues
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Undergrad How non-conscious can an Observer be and cause wave function collapse?
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High School Is the Born rule truly independent from other postulates in quantum mechanics?
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Graduate Don't understand equation with overleftrightarrow symbol
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High School Quantum Physics Can Explain Earth’s Weather
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Graduate Can particles appear and disappear "with" a cause?
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High School Lifespan of a Photon: Debunking the Myth of Time Travel
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Undergrad Why must the state transformation be unitary?
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Undergrad What is the Uncertainty in the Total Weight of a Collection of Similar Items?
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Undergrad The Delayed Choice experiment: Is Photon speed important?
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High School Does the Wavefunction of an Electron Collapse When Captured by a Proton?
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Undergrad The electron is not point-like?
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Undergrad I cannot normalise this: F= Cexp(-r/a)
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Undergrad Question about Photons causing Electron Transitions in Atoms
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High School Question about double-slit experiment
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Undergrad Understanding Ground State Degeneracy in the Transverse Ising Model
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Graduate Feynman loop diagrams and Dyson series for anomalous magnetic moment
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Graduate Photon Bouncing during APD Dead Time in Autocorrelation Measurement
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Graduate Time crystals: They require energy added back into them?
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Graduate Understanding Ghost Fields in QED: Eliminating Unphysical Degrees of Freedom"
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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 Physical Meaning of the Imaginary Part of a Wave Function
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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 De Broglie Wavelength at rest: λ = h/p = h/0 when v=0?
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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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