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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 On computing quantum waves exactly from classical action
Undergrad Where does the energy come from?
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Undergrad What Is the Smallest Change Detected by a Multiport Interferometer?
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Undergrad Trouble with Product of Green's Functions
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Undergrad Why do exponential functions occur outside of finite walls?
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Graduate "Nonclassical Advantage in Metrology" paper
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Undergrad De Broglie Wavelength at rest: λ = h/p = h/0 when v=0?
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Undergrad Mass Dimension of Fields (Momentum space)
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Undergrad Need help understanding the first single attosecond pulse measurement
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Undergrad Can an atom absorb a photon, yet its total kinetic energy is decreased?
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Undergrad Lindbladian Jump Operators Condition
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Graduate Phase difference between electric and magnetic dipole moment
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Undergrad How Is the Mixed State Density Matrix Represented in Quantum Computing?
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Undergrad Density Matrix of Multiple Qubits
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Undergrad Does the Photon Play a Crucial Role in Quantum Mechanics?
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High School What is causing destructive interference in double slit experiment?
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Graduate Is entanglement also for time-like intervals?
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Undergrad Is entanglement a consequence of the singularity of the early universe?
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Undergrad Looking for resources about tunneling effect on two delta functional barriers
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Undergrad How Is the Integral from (3-22) to (3-23) Calculated in Quantum Mechanics?
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Undergrad Confusion about Scattering in Quantum Electrodynamics
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Undergrad About time-independent non-degenerate perturbation expansion
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Undergrad Magnetic flux through a superconducting ring
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High School Frequency of an EM wave in Classical and Quantum Physics
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Graduate How to draw the angles of the CKM matrix?
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High School Quantum Nonlocality or Non Counterfactual Definiteness?
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High School What is the size of a VHF photon?
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High School Why doesn't the electron "wave" collapse at the double-slit?
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Undergrad Quantum behavior experiment flawed?
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Undergrad Is it possible for a BBO crystal to produce an interference pattern?
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Undergrad Measurement and Thermal Effects Similar?
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Undergrad Recommendations for learning renormalization?
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Graduate Creation and annihilation operator
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Graduate Solving renormalization group equation in QFT
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High School Is Quantum Mechanics necessary for understanding electromagnetic phenomena?
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Undergrad Energies of bound state for delta function potential
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High School Searching for Quantum Mechanics Lecture on Delayed Choice Experiment
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Undergrad How to distinguish between diagonal vs horizontal/vertical polarization?
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Undergrad Point of Demarcation between Quantum and Classical Behavior
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Graduate Are irreversible processes absolutely irreversible, even given infinite time?
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Undergrad Is Calcite a parallel to the Stern-Gerlach experiment?
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Graduate Renormalized vertex functions in terms of bare ones
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Undergrad How does one time-evolve a quantum state with its kernel function?
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Graduate Quantization of real Klein-Gordon field (sign issues)
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Graduate Anti-commutation relation for quantized fields
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Undergrad Black Hole Fire Walls, Brick Walls, and the Casimir Effect
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Undergrad Impossible probability between theoretical possibility and reality
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High School Quantum Entanglement in Practice
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High School Does decoherence prevent 100% of quantum tunneling of macro object?
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Undergrad If we wait infinitely long, will macroscopic objects undergo quantum tunneling?
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Undergrad Can Electrons or Photons Exceed Light Speed?
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Undergrad Questions on the classical interpretation of (normal) Zeeman effect
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High School Wavefunction and Lorentz Invariance
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High School Preference for the notation used for the wave function?
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Undergrad In what chapter do Mehra and Rechenberg discuss Pauli matrices?
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Undergrad Could a quantum computer simulate any system based on different types of logic?
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Graduate Lagrangian in the Path Integral
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Undergrad Question about Stern-Gerlach experiment
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Undergrad Is my interpretation of the g-factor correct?
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High School Direct sum decomposition into orthogonal subspaces
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Undergrad Who was the first to make a Stern-Gerlach experiment with two magnets?
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Undergrad Normalizing factor of wave function
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Undergrad What Is the Difference Between Loss and Cost Functions in Quantum Computing?
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Undergrad Electrical Analog of Aharonov-Bohm Effect
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Undergrad Parallel transport and entanglement
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Undergrad When was the formula for the Stern-Gerlach experiment found?
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High School Help interpret quantum states of molecular rotation and torsion
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Graduate SU(2) and SU(3) representations to describe spin states
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Undergrad How to get the energy eigenvalue of the Hamiltonian: H0+λp/m ?
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Undergrad What do the authors of the paper mean here exactly by path integral?
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High School Virtual particles and Heisenberg
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Undergrad Solving the Schrodinger Equation for a particle being measured
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Undergrad What is the energy of an atom in a magnetic trap as a function of position?
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Undergrad Entangled, mixed state with conditional entropy zero
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Undergrad QED Picture of static EM Fields
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Graduate Asymptotic states in the Heisenberg and Schrödinger pictures
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Undergrad About the position of electrons (uncertainty)
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Undergrad Question about Commutators and Uncertainty
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Undergrad Measuring electron spin and measuring entangled electron spin
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Undergrad Delayed Choice Quantum Eraser with altered beam splitter
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High School [SOLVED] Regarding the Superposition of Two Plane Waves
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Undergrad Why is BBO the most used crystal for second-order nonlinear optics?
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High School QM randomness vs chaotic determinism?
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Undergrad Energy Non-Conservation in Quantum Mechanics
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Undergrad Delayed choice quantum eraser setup with no beam splitter
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Undergrad How to prove that the L and S (of the total angular momentum commute?
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High School Particle Movement in Quantum Mechanics
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Undergrad HUP for spin seems violated: 0 x sy > sz/2...?
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Undergrad On a constructive method of quantum state preparation (Ballentine)
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Undergrad Trying to understand why electrons fill orbitals the way they do
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High School Is there a probability in QM that an event happens at time t?
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Undergrad General argument that entanglement can only be created locally
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Undergrad What role does Quantum Mechanics play in a internal combustion engine?
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High School Gravitrons vs Photons: how come light and gravity exist?
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Graduate In light of new evidence, what might be behind the Casimir Effect?
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Undergrad What Is Bell's Theorem and Why Does It Matter?
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Graduate Confused about going from relativistic to non-relativistic Hamilonian
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Undergrad Solutions of the Bloch equations for MRT
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High School The nature of anti-particles and anti-matter (a dilettante asks)
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Graduate Is the Fractional Quantum Hall Effect an emergent property?
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Undergrad How exactly does spooky action at a distance violate SRT?
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