Quantum Physics Forum

• Poll

Graduate Questions regarding a paradox.

Graduate Why Can't Free-Particle Wave Functions Be Normalized Over Their Entire Range?

Graduate Quantum control of a looped beam.

Graduate Normalization of a free particle quantum state

Graduate Why wave function should goto 0 f faster than 1/sqrt(x) at infinity

Graduate Photon Average Energy in a Cavity Resonator

Graduate Learning Dirac Notation: Writing Hamiltonian for 3 States

Graduate How Are Planck Time and the Expression \(\sqrt{\frac{\hbar c^5}{G}}\) Related?

Graduate Does Quantum Mechanics Allow for a Time Operator?

Graduate Is the Uncertainty Principle affected by the number of particles in a system?

Undergrad Two hydrogen atom with same spin can form H_2?

Graduate What is an Observer in Quantum Physics?

Graduate Proving Shouten identity in QFT

Graduate Classically predicted ionisation energy of H

Graduate Wavepacket Dispersion and how this links to particle behaviour

Graduate The quantomic oscillator's amplitude

Graduate Why does Lagrangian in QFT only include first order derivative of field?

Graduate Why are eigenvalues the allowable values in quantum mechanics?

Graduate What corresponds to a static field in QFT

Graduate How Does Polarization Relate to Photon Degeneracy?

Graduate Heisenburg's Uncertainty Principal and the definition of randomness

Graduate What is the physical system that follows the Pauli exclusion principle?

Graduate Quantum entanglement and wireless electricity

Graduate 1st order pertubation on 2 level system

Graduate Could Zero-Point Energy Be Weaponized?

Graduate 1st order Pertubation energy and wavefunction

Undergrad Light intensity and polarization

Graduate Position and Momentum Operators

Graduate If all states are stationary, what causes atoms to radiate then?

Graduate My personal criticism to Quantum theory and Human conscience

Graduate Fine structure correction in H atom

Graduate 2 Time Dimension in the Quantum Realm?

Graduate Why Consider Our Position Between Past and Future in Quantum Physics?

Graduate Solution of Schrodinger equation for free electron

High School Does light lose any any energy in a vacuum?

Graduate Need a book that explains linear vector space

Graduate Verifying Lorentz algebra commutation relations from Peskin & Schroeder 3.18

Graduate Updates on Penrose Quantum Mirror Experiment

Graduate Pauli Matrices: Calculating Expression

Graduate Misunderstanding about measuring the spin of the electron

Graduate Scattering theory - Regular solution

Graduate Is light a photon or a wave? (concrete question)

Graduate Two-level atom Hamiltonian transformation with Wigner D matrix

Graduate Are Units Truly Fundamental in Physics According to Duff's Theory?

Graduate Do Gravitons Attract Other Gravitons?

Graduate Can neutrons be used to stablize other particles?

Graduate Is the following correct about virtual particles

Graduate Hamiltonian with position spin coupling

Graduate How Virtual Particles Give Rise to the electromagnetic force

Graduate Wigner Matrix or Wigner D-Matrix?

Undergrad Do Electrons Behave Like Bar Magnets?

Graduate Can quantum superposition help decide poker hands?

Graduate Electronic Excitation: Absorbing and Re-emitting Photons

Graduate Entanglement & GR: Can We Measure Universe Info?

Graduate Is Feynman's QED book still relevant to modern quantum physics?

Graduate Are wave functions and quantum waves synonyms?

Undergrad How does the LS coupling scheme work?

Undergrad Alpha Decay from Uranium: Electrical or Strong Nuclear Force?

Graduate A Bell Theorem with no locality assumption?

Graduate New (apparent) confirmation of virtual particles.

Graduate Is biological life a product of a probability wave

Graduate Quantum fluctuations and momentum

Graduate Virtual particles and quantum fluctuation

Undergrad Phonon vs Photon: What's the Difference?

Graduate Physical significance of normalizing a wave function?

Graduate Quantization of vector field in the Coulomb gauge

Graduate The double slit and wave particle nature.

Graduate What is the definition of particle(s) in QM?

Graduate Electric charge in quantum field theory

Graduate Square of modified Dirac equation

Graduate Where in physics does randomness occur?

Graduate Stability of Unstable Particles at High Energies: Third Generation

Graduate Calculating Vacuum Fields at Different Frequencies

Graduate Is True Randomness Possible in Our Determined Universe?

Graduate Typo error or correct wavefunction?

Graduate What is the explanation for the sequence in the Mandl QFT textbook (p.53)?

Graduate Why Is Spin-Orbit Coupling Selective in Phosphorescence Transitions?

Undergrad I am trying to figure out how to refer to two overlapping uncertainty

Graduate Propagator for matrix fields (based on Srednicki ch80, p490)

Graduate Why quantum mechanics doesn't scale to macro objects

Graduate Expectation value of a product of operators

Graduate How to form a picture in mind of coherent state?

Graduate Speed of transmission in quantum entanglement

Graduate Fate and Schrodinger's Equation

Graduate Schrodinger's Cat - your opinions

Graduate Schrödinger equation in momentum space and number of solutions

Graduate Stress energy tensor in extended standard model

Graduate Why does partial trace over A give the reduced state's expectation value?

Graduate Is there an interference pattern within a non-interference pattern?

Graduate Can the 'shape' of the universe be described at the Plank scale?

Graduate EPR and Lorentz transformation

Graduate Are super-operators always writable in a basis independent form?

Graduate Do virtual particles exist or not?

Graduate What Does h.c. Signify in Quantum Mechanics Formulas?

Graduate Can Free Particle Have Sharp Energy?

Graduate How is spin rotation measured?

Graduate How to arrive at Bessel function solution to 1D polynomial potential

Graduate Why Hermitian instead of self-adjoint?

Graduate Why are identical particles indistinguishable?

Graduate Question on observer of double-split experiment