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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 "The wavefunction never collapses"
Graduate Why is free field called free ?
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Graduate Is Degeneracy Relevant in Classical Physics and Quantum Mechanics?
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Graduate What is the Mistake in Deriving the EM Hamiltonian?
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Graduate Entangled Photon Repeater = FTL Communication?
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Graduate How many quantum numbers would the system have overall?
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Graduate Insight, spontaneous ordering?
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Graduate Time-Independent Schrödinger Equation
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Graduate Different masses of particles and anti-particles
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Graduate Hydrogen atom with discrete nonlinear Schrödinger equation
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Graduate Casimir effect: threshhold distance?
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Graduate About the n-point Green functions in position-space
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Graduate Wave-packets with opposite momenta.
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Graduate What Are the Assumptions Behind the Groenewold-van Hove Theorem?
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Graduate How do we know the value of spin?
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Graduate How to understand braket two state?
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Graduate Quantum Computing problem [Quantum Teleportation] (Nelson and Chuang)
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Graduate Differentiating the complex scalar field
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Graduate Nondegenerate Eignefunctions as Linear Combinations
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Graduate How Can You Calculate Landau Level Orbitals and Wavefunctions?
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Undergrad An Introduction to Hilbert Space: Physically Explained
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Undergrad How Are Slits Made for the Double Slit Experiment?
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Graduate Why is there a time dilation in relativity and what are its implications?
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Graduate Full knowledge of polarisation angle.
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Graduate Unable to decrypt emission/absorption matrix element
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Graduate Quantum entanglement between fermions
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Graduate QM: Is this a Spherical Harmonic Identity?
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Graduate Understanding the 5 DiVincenzo Criteria for a Scalable Quantum Computer
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Graduate Feynman rules for Majorana fields (based on Srednicki)
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Undergrad Understanding Electron Orbitals: The Role of Photons in Orbital Changes
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Graduate Solving Schrodinger's Eqn for Quantum Ring: Boundary Conditions?
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Graduate Is There a Boson for Magnetic Force in Quantum Mechanics?
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Graduate Stern-Gerlach With 3 Magnets
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Undergrad Interference of different lights
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Graduate Quantum Electrodynamics in Curved Spacetime
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Graduate Wick rotation and interference
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Graduate Single photon wave like propagation
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Graduate Some questions about perturbative expansion of S matrix
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Graduate Interactions between virtual and real particles
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Graduate Why Does Equivalence Principle Imply Non-Existence of Higher Spin Fields?
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Undergrad Quantum Mechanics e-2, Bransden & Joachain
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Graduate How do the wave-functions of particles and anti-particles differ?
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Graduate What happens in this thought experiment?
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Graduate Velocity of qm particle in a box
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Graduate Speed of photons through dual slit.
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High School The velocity of electrons (question)
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Graduate General Relativity, Quantum Mechanics, Motion and Virtual Particles Oh my
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Graduate Unknown well-known equation in Sakurai
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Graduate Bra-ket Notation: Explained in Layman's Terms + How to Notate
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Graduate Quantum Decoherence: Understanding Contradictions
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Graduate How Do Helium Lamps Produce Light?
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Graduate How can I deform electron orbitals?
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Undergrad What is the Doppler Shift of Matter?
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Graduate How Does the Schrödinger Equation Account for Rest Mass Energy?
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Graduate Entangled particles - Correlations
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Graduate Why Must Dirac Matrices in Minkowski Space Be at Least 4x4?
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Graduate Hamiltonian mechanics and the electric field
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Graduate Time travel and the double slit experiment?
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High School Difference between coherent light and polarized light
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Graduate Casimir Effect? Seems there is a simpler solution than virtual-particles.
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Graduate Where can I find Dirac's original papers?
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Graduate The Landau-Zener transition & spin-flipping in an external field
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Graduate How do I compute the 3D Fourier transform of a point charge potential?
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Graduate A confusion from David tong's notes on QFT
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Undergrad Question about double slit experiment
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Graduate QED Renormalization: Feynman Diagrams with Counterterms on External Legs
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Graduate Neutron Dipole Moment: Parity, Time Reversal Symmetry
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Graduate Uncertainty Principle: My Solid State Physics Class
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Graduate What separates one particle from another?
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Graduate Shankar's treatment of Dirac's delta-function
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Graduate Bare Charges of Identical Particles: Is It Possible?
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Graduate QED:WeakForce:QCDU(1):SU(2):SU(3)T^1:T^2:T^3 ?
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Graduate What Wave Patterns Emerge from Randomized Buoy Generators on a Calm Lake?
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Graduate Wave function (orbital) rotation matrix
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Graduate Quantum double slit experiment
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Graduate Which way detector (hardware) information
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Graduate Quantum vacuum, virtual particles and ''friction''
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Graduate Empty space can set objects in motion
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Graduate Rainbows and wave-particle duality
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Graduate Is the wave-function frequency of subatomic particles affected by gravity?
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Graduate Some confusions about interaction picture, in peskin
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Graduate Relativistic quantum mechanics and causality
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Graduate Double slit experiment question
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Undergrad Photoelectric effect experiment
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Graduate The projetive Hilbert space of coherent state.
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Graduate How are free fields and static fields in QFT interconnected?
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Undergrad Schrodingers Cat is sbserved whilst in the box
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Graduate Consecutive Measurements on One of an Entangled Pair
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Graduate New Type of Entanglement - Time
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Graduate Electrons traversing a Potential well
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Graduate Should QM or QED be used?
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Graduate Understanding Convergence Factors in Physics Textbooks
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Graduate Understanding Cutkosky's Rules for Bhabha Scattering and the Optical Theorem
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Undergrad What Happens When Photon Strikes an Electron?
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Undergrad What is the value, in joules, of one quantum of energy?
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Graduate Why is the behaviour at infinity important in classifying gauge theory states?
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Graduate Special Relativity and Entanglement
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Graduate Help with intuition concering braket sandwich
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Graduate How Do Canonical Transformations Translate from Classical to Quantum Mechanics?
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Graduate Quantum Field is Observable, Not State Property
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Graduate What is the Relationship Between Quantum and Classical Path Integrals?
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