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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 One does not “prove” the basic principles of Quantum Mechanics
Graduate Conservation of Quantum Information
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Undergrad How to calculate the Lamb Shift in Hydrogen?
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High School Is Human Height Ever Exactly Pi Feet?
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Undergrad A little help with a two particle Hamiltonian
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Undergrad Two Photon Sagnac Source
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Undergrad Mach-Zender-Interferometer with polarizers
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Undergrad Notion of a "clock" in Quantum Mechanics
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Graduate How do entanglement experiments benefit from QFT (over QM)?
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Undergrad Why is a resonant frequency assumed in blackbody radiation?
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Graduate Extra terms in the Action in Zee chapter 1.3?
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Undergrad Why simultaneous detection of wave and particle nature is not possible
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Undergrad Why does the square of the amplitude of a wave function represent P?
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High School Does a field's vacuum density violate conservation of energy?
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Undergrad Conservation of energy and measurement problem
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High School How to obtain state vector for polarised light
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Undergrad Complementarity Of One- And Two-Particle Interference
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Undergrad How to get the wavefunction of a single particle in QFT?
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Undergrad Dark Matter and quantum observable
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High School Classical physics vs quantum physics
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Undergrad Wave function of a scattered particle and cross section
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Graduate Do the time and normal ordering operators commute?
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Graduate Gauge breaking and Faddeev-Popov ghost particles
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Undergrad Does downconversion cause pump photon wavefunction collapse?
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Graduate What is the explanation behind loops as O(h) corrections in tree level diagrams?
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Undergrad Physical Meaning of a Quantum Field
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Undergrad Can a 4x4 matrix act on a 2x2 matrix in a specific way?
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Graduate Bosonic Field operator in this exponential
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Undergrad Bohr model for electron energy states
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High School Quantum Gravity and Special Relativity
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High School Interaction of light with atoms
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Undergrad How does the expectation value of the spin operator evolve over time?
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Undergrad Quantum states: only vectors?
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Graduate Theoretical status of the Landauer Principle
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Why are most molecules in the singlet state instead of the triplet state?
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Undergrad Can two particles be in the same place at the same time?
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Undergrad "Dumb" question : is there an upper bound on the energy of a photon?
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High School Is quantum entanglement a four dimensional force?
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Undergrad What happens to an electron's frequency during absorption of a photon?
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Graduate Derivative of a Lorentz-Transformed Field
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Undergrad Rydberg Equation: Physics and Beyond
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High School Do electrons accelerate when transitioning from one energy state to another?
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Graduate Can Work Be Defined for a Quantum System with a Time-Dependent Hamiltonian?
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Undergrad Solving a quantum harmonic oscillator using quasi momentum
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Graduate Correlation functions of quantum Ising model
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High School Quantum radar and its implications
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Undergrad Schrodinger equation for a free particle in 3d space
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Undergrad Runaway Solutions: Unstable System Implications
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Graduate Understanding a sequence in P&S
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Undergrad What would happen if wavelength could go higher than gamma rays
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Undergrad Attractive van der Waals force between similar atoms/molecules
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Undergrad Who did this experiment with photons?
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Undergrad Why does quantum mechanics believe that gravity is a field?
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Undergrad What Is the Origin of Unruh Temperature and Its Implications?
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Undergrad Quantum field theory: an informative approach
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High School How Are 2D Standing Waves Extended to 3D in Quantum Mechanics?
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Undergrad Question about the quantum harmonic oscillator
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Undergrad How Does a Photon Know Which Slit to Pass Through in a Double Slit Experiment?
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Undergrad Identify the charge and strangeness of particle Y
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High School Why do photons only interact with charged particles?
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Graduate Regarding Coleman's Sine-Gordon Duality
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Graduate Bosonization Formula and its Effects on Fermion Number
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Undergrad Delayed-choice quantum eraser experiment
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High School Can someone help me understand as well as validate this article
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Undergrad Heavier bosons and their function and detection
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Graduate Can decoherence be associated with heat generation?
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Undergrad Is Quantum Mechanics Truly Time-Reversal Symmetric?
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Undergrad Is the product of two hermitian matrices always hermitian?
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High School Understanding Virtual Particles: Speed and Rest Mass
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Graduate Simultanious eigenstate of Hubbard Hamiltonian and Spin operator in tw
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Undergrad Is Time Travel Possible with Entangled Particles?
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Graduate How far can one change a model before it leaves the universality class
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Undergrad Time independent perturbation theory in atom excitation
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Undergrad Anticommutators of the spin-1 representation
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Graduate Is the Landau pole in QED an artifact of perturbative methods?
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Undergrad What is the physical meaning of <p>?
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Graduate Creation/annihilation operators and trigonometric functions
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Undergrad (In)dependence in entanglement experiments
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Undergrad Describing entanglement collapse with absolute time
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Undergrad Relationship between Planck Distribution and Quantization of Energy
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Undergrad Metal Semiconductor contact (Part 2)
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Graduate Understanding the Charge Distribution at the Metal-Semiconductor Interface
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Graduate Find Reduced Mass for Polyatomic Molecules
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Graduate Confusion about 2016 Unruh paper - fluctuating vacuum energy density?
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Graduate Is the Berry connection compatible with the metric?
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Undergrad "Spatial Width," "Coherence Length," and the Measurement Problem
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Graduate Particle production in 1+1D QFT
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High School Beta decay and the down quark.
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Undergrad Influence on world's number and Bell's theorem
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High School Energy Band Diagram: K.E. & P.E. of Electron in Semiconductor
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Undergrad Understanding Bohr's Theory: Spacetime & Energy Momentum Relations Explained
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Undergrad Annihilation/creation operator question
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Undergrad Hermitian operators in QM and QFT
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High School What causes quantum uncertainty?
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High School Is information lost when a photon is absorbed?
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Undergrad How to collapse a water wave through a double slit into particle behaviour?
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Undergrad Energy levels from the propagator
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Undergrad Is an electron's spin always in some definite direction?
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Graduate Proof - gauge transformation of yang mills field strength
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Undergrad High Energy Physics: Positron-Electron Annihilation
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Graduate Collapse in QM: in conflict with SR?
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