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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

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