Quantum Physics Forum

Graduate Why are the transitions in a Caesium atom called D1 and D2?

Graduate Methods of ionisation/excitation

Graduate How to Calculate Second Order Correlation from Master Equation?

Graduate Leó Szilárd invented a feedback protocol1

Graduate Dirac Spinor Algebra: Simplifying Expressions

Graduate Is there always a real solution for every real Hermitian eigevalue problem?

Graduate Can Single Photon Beams Exhibit Coherence?

Graduate Question about Dr. Chinese's example of Bell's Theorem

Graduate Quantized Energy Levels: Understanding the Basis of Schrodinger's Equation

Graduate Calculating <\chi_3|H|\chi_3> w/ Dirac Notation Algebra

Graduate Does this expression has an exact solution?

Graduate Exploring Quantum Theory: Schrödinger's Cat & the Many-Worlds Interpretation

Graduate Quantizing the Klein-Gordon equation

Graduate Is there some reverse of annihilation?

Graduate Unraveling QM Postulate 3: From Origin to Implications

Graduate How can I apply quantum mechanics to describe a photon gas in a box?

Graduate Two-particle fermionic basis states

Graduate Mixed State Eigenfuntion Equations

Undergrad Double slit experiment with electrons and larger particles

Graduate Why do we have to use operators in QM?

Graduate Question on Stern Gerlach experiment

Graduate Lacking information of the general quantum physics explanation

Graduate Elementary QFT question, part 2

Graduate Quantum immortality and engineering your universe?

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Graduate How many believes in Quantum Immortality ?

Graduate QFT Commutator (momentum and Hamiltonian) Issue

Graduate Heisenberg uncertainty principle derivation and canonically conjugate vairables?

Graduate Quantum Coaching on company website

Graduate Is every Hamiltonian necessarily Hermitean?

Graduate Self-learning QFT for mathematicians

Graduate Non-separability and solipsism

Graduate BRST Transformation: Notation & Nilpotency of s Operator

Undergrad Light propagation through polarizers

Graduate Explaining Continuous Time Random Walks: What Is It and How Is It Used?

Undergrad Trouble understanding band theory

Graduate Why vacuum has negative pressure?

Graduate Trouble understanding spin-1 Pauli matrices

Graduate Is There a Connection Between Quantum Physics and the Golden Ratio?

Graduate Entanglement carrying data variant

Graduate Is There an Alternative to Fermi's Golden Rule for E&M Wave Equations?

Graduate Freewill = Macro Quantum Mechanics?

Graduate What Are the Commutator Relations Between Hermitean Operators A and B?

Graduate Spin Angular Momentum matrix of an antineutrino

Graduate Adiabatic Curvature - Deduce the Local Adiabatic Curvature K

Graduate Electromagnetic field in vacuum

Graduate Delayed Quantum Erasure Double Slit with Observer Choice Available

Undergrad Can Energy Be Converted to Mass?

Graduate Wondering about QM whether things are actually all deterministic?

Graduate Cause of the Heisenberg Uncertainty Principle

Graduate A Few Clear Questions on the Nature of Quantum Theory

Graduate How Do Photons Relate to Light's Wave-Particle Duality?

Graduate DoF of a Gauge Boson - Why Only 1 for Virtual Photons?

Graduate Transfer matrix, section in Jan Smit's book on Lattice Fields theory

Graduate Simplified Hausdorf-Campbell formula

Undergrad What Are the Dimensions of One-Dimensional Wave Functions?

Graduate Is the Uncertainty Principle Statistical? And if so

Graduate Find Matrix Representation of Green's Function | References

Graduate The origin of the quantum vacuum?

Graduate Is Quantum Mechanics Applicable to Everyday Life in the Macrocosm?

Graduate Solution to the Klein Gordon Equation

Graduate Pervasiveness of linear operators

Graduate Schroedinger's cat experiment, my question?

Graduate Quantum Entanglement : Spooky action at a distance

Graduate Particle in a box: commuting energy and momentum operators

Graduate Struggling to understand the concept of spin triplets

Graduate Lagragians for spin 1/2 fields

Graduate About the unit of Radial wave function R(r) of Hydrogen atom

Graduate What is the relationship between Hilbert Space and space-time?

Graduate Energy in Schrodinger’s Equation

Graduate Wondering about entanglement at it's most basic level?

Graduate Is space continuous or discrete?

Graduate Second quantization particle current

Graduate Can an Electron's Angular Momentum Change by Absorbing Virtual Photons?

Graduate Why Does a Photon Not Have a Spin Component Sz=0?

Graduate Generator of Rotations: J_x, J_y, J_z Relationship

Graduate Momentum Operators and the Schwartz Integrability Condition

Undergrad Is an Electron a Boson or a Fermion?

Graduate Pauli matrices with two spacetime indices

Graduate Quantum Weirdness: Vacuum Energy & Wave Functions

Graduate Time derivative of a Schrodinger-picture operator?

Graduate Understanding Spinors: Rank-1/2 Tensors & Square Roots of Vectors

Graduate Expectation Value: My Understanding vs. Prof.

Graduate State Vector Concepts in Quantum Mechanics: A Beginner's Guide

Graduate Uncertainty Operators in Nouredine Zettili's Book

Graduate When is the norm of a state equal to 1?

Graduate Quantum Physics: Move of a Particle

Graduate Why is the hidden variable theory wrong?

Graduate Parity operator and change of variable question

Graduate Does the Elitzur-Vaidman Bomb Tester Reveal the Path of a Photon?

Graduate Pan proto experientialism and the quantum exchange interaction

Graduate Negative Probability: Is It Possible?

Graduate Classical radius of nucleons and quarks

Graduate Probability of Polarization Amplitudes - Frank's Question

Graduate Is Quantum Entanglement the Key to Understanding Particle Measurements?

Graduate How to Experimentally Obtain Wavefunction Parameters?

Graduate QFT around fixed classical backgrounds

Graduate On the quantum physical theory of scattering

Graduate Is the Product of Expectation Values Always True in Quantum Mechanics?

Graduate Why Does the Domain Transform to Keep the Time Dependent Operator Self Adjoint?

Graduate Ground State Parity in One-Dimensional Potentials