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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
High School Help interpret quantum states of molecular rotation and torsion
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Graduate SU(2) and SU(3) representations to describe spin states
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Undergrad How to get the energy eigenvalue of the Hamiltonian: H0+λp/m ?
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Undergrad What do the authors of the paper mean here exactly by path integral?
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High School Virtual particles and Heisenberg
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Undergrad Solving the Schrodinger Equation for a particle being measured
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Undergrad What is the energy of an atom in a magnetic trap as a function of position?
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Undergrad Entangled, mixed state with conditional entropy zero
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Undergrad QED Picture of static EM Fields
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Graduate Asymptotic states in the Heisenberg and Schrödinger pictures
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Undergrad About the position of electrons (uncertainty)
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Undergrad Question about Commutators and Uncertainty
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Undergrad Measuring electron spin and measuring entangled electron spin
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Undergrad Delayed Choice Quantum Eraser with altered beam splitter
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Undergrad Why is BBO the most used crystal for second-order nonlinear optics?
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High School QM randomness vs chaotic determinism?
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Undergrad Energy Non-Conservation in Quantum Mechanics
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Undergrad Delayed choice quantum eraser setup with no beam splitter
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Undergrad How to prove that the L and S (of the total angular momentum commute?
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High School Particle Movement in Quantum Mechanics
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Undergrad HUP for spin seems violated: 0 x sy > sz/2...?
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Undergrad On a constructive method of quantum state preparation (Ballentine)
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Undergrad Trying to understand why electrons fill orbitals the way they do
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High School Is there a probability in QM that an event happens at time t?
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Undergrad General argument that entanglement can only be created locally
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Undergrad What role does Quantum Mechanics play in a internal combustion engine?
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High School Gravitrons vs Photons: how come light and gravity exist?
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Graduate In light of new evidence, what might be behind the Casimir Effect?
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Undergrad What Is Bell's Theorem and Why Does It Matter?
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Graduate Confused about going from relativistic to non-relativistic Hamilonian
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Undergrad Solutions of the Bloch equations for MRT
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High School The nature of anti-particles and anti-matter (a dilettante asks)
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Graduate Is the Fractional Quantum Hall Effect an emergent property?
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Undergrad How exactly does spooky action at a distance violate SRT?
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Graduate K-point mesh and Monkhorst-Pack
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Graduate How can a 'Principle' produce a 'Force'?
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Graduate Method for delaying photon 140ms+ while maintaining entanglement?
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Undergrad Spontaneous Symmetry Breaking and quantum mechanics
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Undergrad Phenomena: Recent + Documented
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Graduate Importance of Densities in QFT
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Graduate Two Slit Interference Experiment Variations
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High School Double slit experiment, expensive gear?
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Undergrad What does ## \psi^{*}\hat{H}\psi ## mean?
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Undergrad Can We Accurately Measure Momentum in the Lab?
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High School Extremely elementary questions about QM
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Graduate QFT S-matrix explanations are incomprehensible
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Graduate What exactly does 'Locality' in Gauge Theory mean?
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Graduate Potential between Photons via Delbruck Scattering
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Graduate What is the geometry of a gauge potential in the A-B experiment?
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High School Light, Photons, Waves, Particles: Wave-Particle Duality....
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Undergrad Double slit as a function of time
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Graduate Proving BF action is a difference of Chern-Simons actions
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Undergrad Some questions about this vintage periodic table
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High School What happens to excess energy when an electron gets excited by light?
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Graduate How to derive the quantum detailed balance condition?
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Undergrad Can anyone explain me this quantum entanglement experiment
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Graduate Why does the description of a composite system involve a tensor product?
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Graduate Ground state calculation with a time averaged wave function
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Undergrad Photon Entanglement: Identifying & Using an Entangled Pair
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Undergrad Confusion Regarding a Spectral Decomposition
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Undergrad Can we now explain the Fine Structure Constant?
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Undergrad Do EM waves have negative frequency inside negative-index materials?
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Undergrad How can I model squeezed states in 3D optical modelling software?
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Undergrad Confusions I have regarding Measurements in Quantum Mechanics
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Undergrad How Do Gauge and Phase Symmetries Differ in Quantum Systems?
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High School Interferometry: Photons Needed for Interference Pattern
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Graduate Anti-symmetric tensor question
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Undergrad Where do the vibrational modes of molecules come from?
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Undergrad How is the Schrodinger equation related to the Heisenberg equation?
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Graduate Why Can't I Derive Eq.(7) from Phys.Lett.B Vol.755?
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Undergrad Is photon energy negative in a negative-index metamaterial?
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Undergrad Force carrier particle trajectories and warped spacetime
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Undergrad Do Two Photons in a Radiative Cascade Exhibit Directional Correlation?
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Undergrad The speed of forces, and applying relativity to force carriers
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Undergrad Callan-Symanzik equation for Effective Potential
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Undergrad Quantum Circuit Confusion On Time Evolution
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Undergrad Can the Lieb-Robinson Bound be Intuited from the Taylor Series of an Operator?
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High School What is the nature of de Broglie matter wave? Is it longitudian or transverse?
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Undergrad Interpreting Unitary Time Evolution
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Undergrad Generating Entangled Electron Pairs
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Undergrad A hurdle in quantum computing I've never been able to figure out
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Undergrad Quantum Mechanics vs Einstein: Light Btwn Black Holes, Double Slit Experiment
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Undergrad Is there a Crookes radiometer device with photoelectric effect?
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Undergrad Entanglement may reveal more about black holes? ...Even micro ones!
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Undergrad What is the limit in size that two particles/objects can be entangled?
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High School Is it possible to get the photoelectric effect in red color frequency?
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Undergrad Spectroscopy: vibronic and rotational transitions
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Undergrad Antisymmetrizing a Factorized Polynomial Vanishes?
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Undergrad Is there a generator of entangled photons with fixed polarization?
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Graduate Identity with Gamma matrices and four-vector contractions
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Undergrad Time dependence of operators in the Schrödinger picture
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Undergrad Help with a derivation from a paper (diatomic molecular potential)
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Undergrad Singlet Halperin State Construction
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Undergrad What is a False Vacuum? Understanding its Properties and Energy Differences
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Undergrad Hawking's latest contribution, is this an implication?
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High School What Distinguishes Wavefunction from Superposition in Photon Behavior?
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High School Does Wavelength Affect Uncertainty in Macroscopic Objects?
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Graduate Number of particles in canonical ensemble
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Undergrad JC Model in Python: Advice & Feedback Needed - Jon Poplett
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Undergrad Emission Spectrum & Energy: Exciting Hydrogen Vapor
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