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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

Graduate Universal quantum physics
Graduate Bosons's amplitude to go into the same state at low temperatures
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Graduate Equality of expectation value integral over coordinate space and over energy
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Graduate QM: What are Tensor Operators & How to Understand Georgi's Definition?
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Graduate Collapse of wave function question
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Graduate 4-point correlation in phi 4 to first order
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Graduate Partial trace of density matrix
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Graduate A quantum particle at rest viewed from a merry-go-round.
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Graduate Question for understanding photon entanglement
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Graduate Understanding Exponential of Operator: Expansion and Eigenvalues Explained
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Graduate Klein-gordan Hamiltonian time-independent?
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Graduate Measurement of spin due to the force on a magnet
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Graduate About eq. (5.7.23) in Weinberg's The quantum theory of fields vol. I
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Graduate Quantum Falling Magnet: Lenz's Law Demo?
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Graduate Dimensions of klein-gordon field
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Graduate Question about quantum numbers:
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Graduate What are Virtual Particles and How Do Borrowing and Repaying Work?
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Graduate Weih's data: what ad hoc explanations do local and non-local models give?
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Graduate Wave-particle duality is a correct theory of reality
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Graduate Nonlinear evolution of the quantum mechanical state vector
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Undergrad What is the momentum of an electron?
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Graduate How does a non-linear Schrodinger equation implies non-unitary evolution?
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Graduate A question regarding tensor product of hilbert spaces
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Graduate What Particles Could Have Spin 2 1/2 in Physics?
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Graduate A classical wave as sum of many coherent quantum wavelets?
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Graduate Eigenvalues for X’s Pauli's matrix
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Undergrad Symmetry and symmetry breaking
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Graduate Wave properties of an electron
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Graduate Question on Decoherence and the Delayed Choice Quantum Eraser
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Graduate How Do Spin and Symmetry Relate in Particle Physics and SUSY?
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Graduate Undergrad w/o formal quantum introduction, having trouble
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Graduate Total energy vs. energy in a finite region
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Graduate Effective field theories, eliminating fields using equations of motion
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Undergrad Different formulas, same physics?
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Graduate Wiegner Eckart theorem, I don't understand it
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Graduate Parity switching wave functions for a parity invariant hamiltonian?
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Graduate Is Braket Operation Legal? Elaborate Here
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Graduate Isn't all action, spooky action at a distance
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Graduate What we know about the foundations of Quantum Mechanics?
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Graduate Is a slit automatically also a detector?
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Graduate What are the implications of this experiment?
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Graduate Zero Point Energy: Harmonic Oscillator vs Rigid Rotator
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Graduate I am not sure to put this in this secton or computer section
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Graduate Does any field, other than gravity, bend space-time?
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Graduate Identical fermions in a box - degenerate states
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Graduate Help clarify the probability of pure states and mixture of states
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Graduate A simple quantum experiment: what have I got wrong?
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Graduate Bloch modes and normal waveguide modes- help to clear up
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Graduate Normalization of Radial wavefunction of hydrogen atom
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Graduate Covariant Notation: Understanding Its Basics and Applications
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Graduate Velocity Distribution function of molecule at low temperature
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Graduate Quantum Nonlocality and Causation
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Graduate What is the minimum level of energy in quantum physics and who determined it?
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Graduate Find units of transition dipole moment
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Graduate Defining velocity distribution
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Graduate Source of Casimir effect energy
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Graduate I can't visualize spin I know that its not just a particle rotating
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Graduate Necessity of Bell's experiment
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Graduate Average Randomness Thought experiment
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Graduate Is there a consensus on Bell's Theorem and its implications?
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Graduate Role of hermitian and unitary operators in QM
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Graduate Can Sending Signals Through Time Help Predict the Future?
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Graduate New and have a few initial questions.
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Graduate Layman question about quantum theory.
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Graduate The Role of Eigenvectors and Eigenvalues in Quantum Mechanics
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Graduate Polarization vector in Peskin & Schroeder QFT
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Graduate High energy particles and uncertainty
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Undergrad Combining light beams question
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Graduate Which order do you take derivative of delta function?
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Graduate Why Does Bell's Calculation Yield a Negative Cosine?
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Graduate Interesting New FQXi Contest Essay re: Signal Causality
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Graduate Why cant a particle go through one slit but behave as if it went through both?
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Graduate Help with the Schrödinger Equation.
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Graduate Why do atoms want a full outer shell in quantum mechanics?
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Graduate Degenerate states and wavefunction collapse
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Graduate Does the Nucleus Have a Wave Function?
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Graduate Why do we consider the evolution (usually in time) of a wave function ?
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Graduate Why is the Braid Group Infinite?
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Graduate Classifying electron orbitals by nodes
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Graduate De Sitter Space and Virtual Particles
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Graduate Question About Quantum Numbers
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Graduate Spin 1/2-Raising and Lowering operators question
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Graduate Calculating the frequency of the fundamental vibrational mode
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Graduate Quantum Harmonic Oscillator Complete System
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Graduate Propagator for inverted harmonic potential.
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Graduate Schrodinger's Cat- Cat variations causing loopholes in the paradox?
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Graduate How are correlation functions defined for non-uniform operator theories?
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Graduate Properties of derivatives of a wavefunction?
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Undergrad What are the shapes of atomic orbitals
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Graduate Dirac Matrix Property? Possible Book mistake?
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Graduate What is the Meaning of Expectation and Deviation of an Operator?
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Graduate Square integrable functions - Hilbert space and light on Dirac Notation
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Graduate Faster than Light Information Sending Solved?
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Graduate Can Coherence Be Restored in Quantum Systems?
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Graduate How Does Quantum Entanglement Create Spooky Action at a Distance?
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Graduate Wave Function Collapse and Bayesian Probabilty
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Graduate Spherical Tensor operators for half-integers
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Graduate Why do we use Gauge Theories to describe local conservation of charge?
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Graduate The Lagrangian formalism of Quantum Field Theory
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Graduate Quantum algorithms on Graphs VS Quantum Graphs
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Graduate Energy of a Photon: Frequency, Intensity, Momentum
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