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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 Universal quantum physics
Graduate Why time is not an observable in quantum theory?
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Graduate How to understand the off-diagonal elements
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Graduate Gaussian Integrals for Quantum States of well Defined Momentum
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Graduate Analyzing Bell's inequality for different measurement angles
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Graduate What Are the Origins and Mechanisms Behind the H-α Hydrogen Spectral Series?
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Graduate How Does Hawking Radiation Influence the Black Hole Information Paradox?
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Graduate Bell experiment: Rotate measurement device 180°
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High School Information carrued by photons.
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Undergrad QM: Need Help Applying Fourier Transform
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Graduate Electromagnetism - interaction between the electron and the quarks
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Graduate Elektromagnetic field ~ probability amplitudes
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Graduate Spontaneous Emission + Reversibility
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Graduate Can we ever truly predict the future positions of atoms?
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Graduate Quantum Mechanics: Understanding Particles at a Distance
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Graduate Electron Energy Level Transitions
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Graduate Understanding the Wave Nature of Photons in Double Slit Experiments
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Graduate What happens if you measure the spin of entangled particle second time
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Graduate How Does Quantum Entanglement Enable Faster Than Light Information Transfer?
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Graduate Measuring spin on electrons prepared in various directions
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Graduate Understand Operator Dispersion in Sakurai's "Modern Quantum Physics
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Graduate Double-Slit Experiment With Various Energy Particles
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Graduate Why does a BBO crystal create entangled photons?
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Graduate Double Slit Experiment: Wave-Particle Duality
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Graduate What is the significance of operator conventions in quantum mechanics?
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Graduate Lowest energy state with infinite and finite potential
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Undergrad Reduced Planck's constant and Planck's constant?
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Graduate Can Electron Degeneracy Pressure be Visualized?
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Graduate Hellman-Feynman Theorem: Coulomb Repulsion & Attraction
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Graduate Measurement of entangled particles causes dechorence at a distance?
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Graduate Wave functions for 2D potential with spin interactions
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Graduate Completeness Relation: Significance & Multiplying State Vector
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Graduate Concepts about infinite potential well
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Graduate How do we get the expectation value formula?
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High School Variation of the Double-slit experiment
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Graduate Can continuously (strongly) measured quantities ever change state?
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Graduate Entagled Electrons - measuring both x and y spin
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Graduate Interpreting the Dirac equation
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Graduate Photon-proton/ proton-electron interactions
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Graduate Understanding Wave Packets in Quantum Physics
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Graduate Second quantization of the Schrodinger fields
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Graduate Planck Arriving at a Relation Between Energy and Frequency with h
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Graduate Double slit: Human vs Machine Observer
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Graduate Why Does the 3s Hydrogen Wave Function Use the Polynomial (27-18σ+2σ²)?
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Graduate About the mathematical structure of wave functions
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Graduate Commutator Relations; Conjugate Product of a Dimensionless Operator
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Graduate Is complimentarity an expression of HUP?
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Graduate A problem of momentum representation
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Graduate EPR reasoning with triplet state
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Graduate Poisson Statistics + Photon Detections
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Graduate Principal Difference between electrostatic potntial and gravitational
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Graduate Different representations of spinors
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Graduate Question about delayed choice quantum eraser
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Graduate Suppose you have an electron in the infinite square well
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Graduate Aid for understanding some calculations
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Graduate Why are there fixed electron orbitals?
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Graduate Momentum space particle in a box
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Graduate The quantum statistical approach
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Graduate Are point particles always points?
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Graduate Dumb Question: Is there a Planck length for probability
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Graduate Why is Phase Velocity Greater than Speed of Light?
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Graduate Observation determines outcome term?
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Graduate Fierz Identity Substitution Into QED Lagrangian
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Undergrad Spectral Line Question: True or False?
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Graduate Quantizing Gravity: Uncovering Mathematical Incompatibilities
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Graduate Full reflection of wave function for E = V0
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Graduate Light - stopped or trapped inside a crystal?
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Graduate Quantum effects from an imperfect absorber
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Graduate Space between bound state energies in some potential.
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Graduate Does this article support the existence of FTL particles?
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Graduate Atomic Models: Overlapping N Levels & Possible Alternatives
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Undergrad Uncertainty Principle in Classical Physics
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Graduate What is the status of E=mc^2 in QM/QFT
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High School What Uncertainty Principle actually is?
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Graduate Questions about HUP, entanglement and coherence
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Graduate Exploring the Casimir Effect: Online Resources & Reading
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Graduate Entangled particles inside a black-hole
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Graduate Micro-canonical Ensemble of Ideal Bose Gas
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Graduate Measuring Spin of Electrons Along X, Y & Z Axes
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Graduate The Difference Between Bra Vectors and Covectors
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Graduate Two hermitian commutator anticommut {A,B}=AB+BA=0
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Graduate Delayed Choice Bell-state Quantum Eraser
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Graduate The Earth as its own nuclear magnetic resonance machine
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Graduate Writing a random 2N by 2N matrix in terms of Pauli Matrices
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Graduate Classical Mechanics vs Quantum Mechanics
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Graduate Uncertainty on entangled electrons
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Graduate Clarifying entanglement and complimentarity
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Graduate Renormalization of QFT - the counterterms
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Graduate Question about the double slit experiment
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Undergrad Electron Spin: +-1/2 | Physics Forum Q&A
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Undergrad A hypothetical question about seeing an atom with the naked eye
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Graduate What is quantum field theory trying to explain?
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Graduate Effect of changing probabilities on interference
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Graduate Quick question on ensembles of pure states
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Graduate How can we measure entanglement?
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Graduate Non-interfered vs interfered photons
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Graduate QFT: Point-Like Particles vs Wave-Particle Duality
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Graduate Potential step with E = V0; classically forbidden or allowed?
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Graduate Why are other systems so sensitive to decoherence?
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Graduate Solving Schrod. Eqn. for Potential Barrier with E > V
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Graduate Difference between a normal wave function and a standing-wave function
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