Quantum Physics Forum

Post thread
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
A Possible Ways to reduce Electron field Emission threshold
  • · Replies 1 ·
Replies
1
Views
1K
I Inner products with spherical harmonics in quantum mechanics
  • · Replies 13 ·
Replies
13
Views
2K
I Schwartz derivation of the Feynman rules for scalar fields
  • · Replies 1 ·
Replies
1
Views
1K
A Does partial tracing make us see things that do not occur?
  • · Replies 7 ·
Replies
7
Views
953
A Finding the Hermitian generator of a Symplectic transformation
  • · Replies 17 ·
Replies
17
Views
2K
I Ideas about observing position and momentum at the same time
  • · Replies 4 ·
Replies
4
Views
2K
I Is the moment of the measurement well defined?
  • · Replies 12 ·
Replies
12
Views
2K
I Schrodinger equation for N particles in a box
  • · Replies 3 ·
Replies
3
Views
2K
A What happens when you commute Sx and Sz in spin operators?
  • · Replies 2 ·
Replies
2
Views
2K
I Form of potential operator of two interacting particles
  • · Replies 3 ·
Replies
3
Views
1K
B Higgs field and nuclear reactions
  • · Replies 7 ·
Replies
7
Views
1K
I Basic question on meaning of momentum operator
  • · Replies 56 ·
2
Replies
56
Views
5K
B Special Relativity violation via Quantum Mechanics?
  • · Replies 12 ·
Replies
12
Views
2K
I What is the role of Relativistic QM?
  • · Replies 40 ·
2
Replies
40
Views
4K
A What do physicists mean when they say photons have a "path"?
  • · Replies 119 ·
4
Replies
119
Views
9K
B Operator as the outcome of a measurement?
  • · Replies 7 ·
Replies
7
Views
1K
I E=hf for massive particles, but which Energy exactly?
  • · Replies 5 ·
Replies
5
Views
2K
I Wavefunction of a free particle has carrier and envelope parts
  • · Replies 8 ·
Replies
8
Views
2K
A Question while I study Modern Quantum physics by Sakurai
  • · Replies 16 ·
Replies
16
Views
3K
A Are Quantum Measurements Truly Special Cases of Unitary Operators?
  • · Replies 1 ·
Replies
1
Views
1K
I Probability when measuring a local observable
  • · Replies 1 ·
Replies
1
Views
1K
I Finding Momentum Mean & Variance from Wavefunction
  • · Replies 5 ·
Replies
5
Views
2K
I The probability density function for the double-slit experiment
  • · Replies 19 ·
Replies
19
Views
3K
I Commutation relations for an interacting scalar field
  • · Replies 3 ·
Replies
3
Views
2K
I Determination of entanglement by observing only one photon
  • · Replies 20 ·
Replies
20
Views
3K
A What is the Bell-like Inequality in Classical Physics?
  • · Replies 6 ·
Replies
6
Views
1K
A Double-Slit Experiment: Momentum & Position
  • · Replies 4 ·
Replies
4
Views
1K
B Virtual photons as force carriers
  • · Replies 29 ·
Replies
29
Views
3K
B Photon Chirality: Left, Right & Beyond
  • · Replies 7 ·
Replies
7
Views
3K
I Difficulty in understanding step in Deriving WKB approximation
  • · Replies 6 ·
Replies
6
Views
2K
B In what way does light behave that is incompatible with waves?
  • · Replies 12 ·
Replies
12
Views
2K
I Multiple questions about eigenstates and eigenvalues
  • · Replies 3 ·
Replies
3
Views
2K
A Generalized Forces and QED/QCD
  • · Replies 14 ·
Replies
14
Views
2K
B Multiple entanglements question
  • · Replies 22 ·
Replies
22
Views
2K
I Collapse of wavefunction into a forbidden eigenstate for a free particle
  • · Replies 75 ·
3
Replies
75
Views
5K
I Wave function using the time dependent Schrodinger equation
  • · Replies 1 ·
Replies
1
Views
1K
A Noether and the derivative of the Action
  • · Replies 3 ·
Replies
3
Views
1K
I Understanding the Irreducible Solution in Classical Harmonic Oscillators
  • · Replies 2 ·
Replies
2
Views
1K
A What is the charge range for two N vacancies in a defect crystal?
  • · Replies 1 ·
Replies
1
Views
910
B Special Relativity and the Measurement Problem of QM
  • · Replies 7 ·
Replies
7
Views
2K
B Entangled particle decoherence question
  • · Replies 4 ·
Replies
4
Views
1K
B "Quantum Field Theory, as Simply as Possible" upcoming publication
  • · Replies 27 ·
Replies
27
Views
3K
I Is the Adjoint of the Position Operator Self-Adjoint?
  • · Replies 6 ·
Replies
6
Views
2K
I Infinite Square Well with an Oscillating Wall (Klein-Gordon Equation)
  • · Replies 1 ·
Replies
1
Views
1K
I How to apply potential operator ##V(\hat{x})##
  • · Replies 2 ·
Replies
2
Views
2K
I Potential Energy of an Electron-Nuclei Interaction in DFT
  • · Replies 1 ·
Replies
1
Views
1K
A Double double slit experiment and path information
  • · Replies 1 ·
Replies
1
Views
1K
B What does it mean that a spin 1/2 particle needs two full rotations?
  • · Replies 6 ·
Replies
6
Views
3K
I Kinetic Energy and Potential Energy of Electrons
  • · Replies 15 ·
Replies
15
Views
3K
I What is the physical meaning of concurence (quantum information)?
  • · Replies 1 ·
Replies
1
Views
1K
A Electron EM Field as Local Gauge Variation of Electron Matter Field
  • · Replies 6 ·
Replies
6
Views
2K
I Clarification on how bra ket works here
  • · Replies 29 ·
Replies
29
Views
3K
I Probability current density of a stationary state
  • · Replies 6 ·
Replies
6
Views
4K
B Pair production -- Seeking clarification of the explanation
  • · Replies 4 ·
Replies
4
Views
1K
I Can Spinors Be Represented as Square Roots of Vectors in Clifford Algebra?
  • · Replies 2 ·
Replies
2
Views
2K
A Probabilities of couples of impacts - Bob and Alice and Young experiment
  • · Replies 16 ·
Replies
16
Views
1K
I Can we accurately predict the properties of gold?
  • · Replies 16 ·
Replies
16
Views
2K
A QED Formulation with Massive Photon Fields
  • · Replies 3 ·
Replies
3
Views
2K
I Can a Path Integral Formulation for Photons Start from a Massless Premise?
  • · Replies 3 ·
Replies
3
Views
2K
I Odds of getting pairs -- QM version
  • · Replies 1 ·
Replies
1
Views
1K
I Why Are There So Few Quantum Time Machine Models?
  • · Replies 13 ·
Replies
13
Views
2K
I Definition of magnetic moment in quantum mechanics
  • · Replies 6 ·
Replies
6
Views
2K
I Does it make sense to speak about the Grandfather paradox in QM?
  • · Replies 3 ·
Replies
3
Views
1K
I Hamiltonian of a particle in a magnetic field
  • · Replies 10 ·
Replies
10
Views
4K
A Majorana representation of higher spin states
  • · Replies 1 ·
Replies
1
Views
1K
A Why Is Dissociation Rate Proportional to Current Raised to the Power of N?
  • · Replies 1 ·
Replies
1
Views
795
A Definition of finite size, radiative and weak magnetism corrections
  • · Replies 3 ·
Replies
3
Views
1K
B Does the Schrödinger Equation Imply a Deterministic Universe?
  • · Replies 4 ·
Replies
4
Views
2K
A Entangled particles in curved spacetime
  • · Replies 4 ·
Replies
4
Views
2K
I Exact dynamics of spin in varying magnetic field
  • · Replies 1 ·
Replies
1
Views
2K
A About Ruling Out Real-Valued Standard Formalism of Quantum Theory
  • · Replies 20 ·
Replies
20
Views
2K
I Quantum Mechanics without time?
  • · Replies 9 ·
Replies
9
Views
1K
I Projection postulate and the state of a system
  • · Replies 9 ·
Replies
9
Views
2K
I Informational Interpretation of quantum mechanics?
  • · Replies 2 ·
Replies
2
Views
1K
I The determination of a particle's spin
  • · Replies 4 ·
Replies
4
Views
1K
B Can probability waves be "focused"?
  • · Replies 14 ·
Replies
14
Views
3K
I How can we observe and measure interacting vacuum?
  • · Replies 1 ·
Replies
1
Views
1K
I How should we interpret the Möbius-strip image of spinors?
  • · Replies 1 ·
Replies
1
Views
2K
I Why ##S_z|+\rangle=\frac{\hbar}{2}|+\rangle##
  • · Replies 8 ·
Replies
8
Views
1K
I Frequency of EM waves in classical and quantum physics
  • · Replies 26 ·
Replies
26
Views
3K
B What proof do we have of wave functions?
  • · Replies 16 ·
Replies
16
Views
3K
I Bell vs Kolmogorov: Unravelling Probability Theory Limits
  • · Replies 93 ·
4
Replies
93
Views
7K
A Call for experiment : Delayed Choice and Quantum Zeno Effect
  • · Replies 18 ·
Replies
18
Views
2K
B Unitarity in GR+QFT: Obeying Full QG Model?
  • · Replies 2 ·
Replies
2
Views
1K
B Wave-Particle Duality -- When is it a wave and when is it a particle?
  • · Replies 27 ·
Replies
27
Views
2K
I What is the difference between charge and force carriers?
  • · Replies 3 ·
Replies
3
Views
1K
I X-ray fluorescence photons question
  • · Replies 5 ·
Replies
5
Views
1K
A Measurement in QFT: Mapping Fields to Theory's Math Formalism
  • · Replies 31 ·
2
Replies
31
Views
3K
B Quantum Entanglement information transmission idea to knock down....
  • · Replies 41 ·
2
Replies
41
Views
5K
A Counting on a computing system
  • · Replies 5 ·
Replies
5
Views
1K
I Where do these time derivatives of Pauli matrices come from?
  • · Replies 4 ·
Replies
4
Views
2K
I What Is the Diameter of a Photon?
  • · Replies 25 ·
Replies
25
Views
2K
A Feynman propagator for a simple harmonic oscillator
  • · Replies 9 ·
Replies
9
Views
4K
I CQED understanding superconducting qbits circuits
  • · Replies 2 ·
Replies
2
Views
1K
I Question about the Which Way experiment & the detectors used
  • · Replies 6 ·
Replies
6
Views
2K
B Are there any empirical tests for the GRW extension of quantum mechanics?
  • · Replies 45 ·
2
Replies
45
Views
4K
I Entropic effects of the Uncertainty Principle?
  • · Replies 2 ·
Replies
2
Views
1K
I Young's Double Slit Experiment: Is it Possible?
  • · Replies 3 ·
Replies
3
Views
1K
What Are the Dimensions of Hilbert Space Elements in Quantum Mechanics?
  • · Replies 14 ·
Replies
14
Views
2K
I What is the spin-boson model for decoherence in a Penning trap?
  • · Replies 2 ·
Replies
2
Views
1K