Quantum Physics Forum

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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 Dimensions of quantum cell automata's state space
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A What is the cause of the Mexican hat potential of the Higgs field?
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A Relationship between Wilson's RG and the Callan-Symanzik Equation
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A Does the existence of a POVM require an ancilla?
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A Measurement of the phase of coherent states
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B How does the EPR paradox work?
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A Quantum Hall Effect Basics: Topological Insulator & Semi-Metal
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B Double slit experiment combined with Stern-Gerlach
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B Wave/Particle Duality: Helical Paths & Planar Projections
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A Has a calculation of the vacuum energy density been done with strings?
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B How does a spinor affect a wave function?
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B Spacetime, quantum field, and aether
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A Off-Forward quark-quark amplitude in momentum space
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I What were the real results of the photoelectric effect experiment?
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A Expectation value in Heisenberg picture: creation and annihilation
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B Question about quantum superposition
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I The quantum state of the Universe
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I The general structure of relativistic QFTs
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I Solving a Particle on the Surface of a Sphere: Obtaining Eigenvalues
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I Can the Helium atom be solved by other methods?
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I Electron Indistinguishability and Repulsion
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B Wave-particle duality of atoms and molecules
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I Strange Hamiltonian of two particles on the surface of a sphere
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I Wavefunction of ionized hydrogen electron
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I Do Bell Experiments Show Local Overlap of Wave Functions Before Measurement?
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I Expansion of Space: Questions on How the Universe Works
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I Boltzmann brains and limitless energy....
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I Acceleration in QFT: Fundamentals, Causes, Quantization
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A The Generalized Capabilities of the Standard Model Lagrangian?
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B Copenhagen Interpretation - Superposition - confirmed?
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I Wavefunction properties tunneling effect
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I Geiger counters and measurement
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I Logical implication vs physical causality
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I Derive the probability of spin at arbitrary angle is cos( )
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A Secular Approximation of Dipole-Dipole Hamiltonian
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I Separability of a Hamiltonian with spin
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A S-Matrix in Quantum Field Theory
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I Why does doping make resonating valence bonds (singlet pairs) mobile?
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I How Do You Break Quantum Entanglement Bonds?
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I Is there spin-charge separation in 2d?
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I Linear combination of states with Pauli's principle
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I Question about Feynman’s path integrals
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I Separable Hamiltonian for central potential
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A Power series in quantum mechanics
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B Derivative of a particle’s energy
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B Statistical Independence in Quantum Mechanics
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I Understanding the diagonal elements of the transition dipole moment
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B Is Quantum Field Theory Understandable Without Advanced Mathematics?
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A 1D Quantum Well - Different width "naming" gives different result ?
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I What is the Role of the Radial Position Operator in Quantum Mechanics?
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I Schrodinger Equation from Ritz Variational Method
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A Computing Correlation functions
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I Understanding Landau Levels for 3D Fermionic Gas in Magnetic Field
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B Low magnification, high resolution, experiments on photon sieves?
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B Wave function won't collapse under a microscope?
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I Spin, Angular Momentum, Momentum, Energy & NRQM
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I Role of Fine Structure Constant in Q.E.D.?
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I Blender Particle Photon Simulation (interesting results w soft bodies)
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I Why don't we consider ##E_{com}## while solving a two body problem?
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A Homodyne detection quantum state tomography
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A POVMs for Infinite Dimensional Hilbert Spaces
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I Doubt in understanding degenerate perturbation theory
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I Simulating physics: the current status of lattice field theories
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I Finding ##S_x## eigenstate using experiments
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I Conventional description of the matter wave
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A Molar heat capacity of CO2 is too high. Why?
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A What is meant by pruning and enrichment?
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I Particle on a cylinder with harmonic oscillator along z-axis
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I Why Can We Use This Mathematical Formula for Mean Value of Measurement?
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B Is gravitized quanta the solution rather than quantum gravity?
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I Can you tell the difference between two neutrons in an alpha particle?
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A Position basis in Quantum Mechanics
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B Are zero-point energy and inertia incompatible?
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I Can someone explain why momentum does not commute with potential?
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I Deriving the Commutator of Exchange Operator and Hamiltonian
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I Modern Atom Model: Is It Perpetual Motion?
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B What happens when 2 beams of light interact?
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I Hamiltonian of a particle moving on the surface of a sphere
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I Matrix element in problem with hydrogen atom
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A Grassmann number: a more rigorous treatment?
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A Another thought experiment about spin 1/2
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I How to find the wavefunction in this case?
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I More doubts in perturbation theory
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I Classical analogy approach to quantum mechanics
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I Is it a fact that vacuum energy exists?
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I Particle on a sphere problem in quantum mechanics and its solution
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A Meaning of "symbol" in algebraic field theory?
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I Classical field in quantum field theory?
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A Could Altering the Past Be Possible with Time Travel?
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I Wavefunction in polar coordinates and its bra ket notation
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I Operator acting on ket state n
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I Effective mass in terms of electron states
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I Time Dependent Sinusoidal Perturbation Energy Conservation
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A Schmidt decomposition - How do I find the matrix related to the state?
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A Constructing the Wigner Function from Measurements of Entangled Photons
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I A doubt regarding position representation of product of operators
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I Position representation of angular momentum operator
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B How Does Photon Polarization Influence Electron State Changes?
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I Applications of the proposed global quantum network of clocks
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B Quantum entanglement and energy conservation
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