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

Graduate Universal quantum physics
Graduate What exactly is the Sigma-ket-bra?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Is it possible for photons to dissappear in vacuum.
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Research Problem - 4-body Decay
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why are even and odd functions orthogonal in quantum mechanics?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Thermodynamic Evidence for Water as a Quantum Mechanical Liquid
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Quantifying the unQuantifyable?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Classically a particle cant exist in a region where V>E
  • · Replies 31 ·
2
Replies
31
Views
8K
Graduate Mass of field for small fluctuations
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Fourier Transform of a productof Green functions
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How Does Electron Screening Affect Charged Particle Scattering in Atoms?
  • · Replies 4 ·
Replies
4
Views
5K
The Mystery of Lamb's Paper on the Photoelectric Effect
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Operator in second quantization
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Collapse of wavefunction - how long it takes?
  • · Replies 19 ·
Replies
19
Views
4K
Graduate Why is -ih/2pi d/dx associated with the momentum operator in X basis?
  • · Replies 22 ·
Replies
22
Views
10K
Graduate Please point me to more info about these Feynman statements
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Fermions must be described by antisymmetric and bosons by symmetric
  • · Replies 18 ·
Replies
18
Views
4K
Graduate Introduction to Quantum Mechanics
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Reflection coefficient of step potential
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Why Does Spin Add? Quantum Mechanics Explained
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What does AB correspondence reveal about measuring devices in quantum mechanics?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Raising and lowering operators
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How Does the Charge Conjugate Dirac Field Transform in Quantum Field Theory?
  • · Replies 8 ·
Replies
8
Views
6K
Graduate Why Photon Spin on Z Direction Must be +1 or -1
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Bhor's rule breaking energy levels
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Why Distance Between Lines of Hydrogen Spectrum Decreases
  • · Replies 3 ·
Replies
3
Views
10K
Graduate Heisenberg Uncertainty Principal
  • · Replies 25 ·
Replies
25
Views
4K
Graduate Quantum physics and equivalence principle
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Angular momentum - integer or half-integer
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Software to compute quantum mechanical and thermodynamics properties of ions
  • · Replies 1 ·
Replies
1
Views
2K
Graduate HUP & Non conservation of energy
  • · Replies 22 ·
Replies
22
Views
4K
Graduate The Understanding of Particle-Wave Duality (Can it be fully understood?)
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Calculating the Mass of the Electron: Theory vs. Experiment
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why Can't I Show the Simple Identity for the Spin-1 Operator in This Paper?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate How to debunk a quantum mystic?
  • · Replies 32 ·
2
Replies
32
Views
12K
Graduate Discover Oscillator Applications in Electromagnetic Fields and Crystal Physics
  • · Replies 6 ·
Replies
6
Views
10K
Graduate Quantum mechanics - question about the system
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Confusion about preparing ensemble of particles and no-cloning theorem
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What's the Force Acting on an Isolated Electron at (0,0,0)?
  • · Replies 40 ·
2
Replies
40
Views
7K
Graduate Attractive force between potential wells
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Estimate ground state energy with HU
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Experimental realization of Stern-Gerlach SGy filter
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Symmetry and irreducible representation
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Probability is square of amplitude or it's product with complex conjugate?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Compton Scattering formula for 180 degree scattering.
  • · Replies 5 ·
Replies
5
Views
10K
Graduate Photon entanglement and fair sampling assumption
  • · Replies 99 ·
4
Replies
99
Views
16K
Graduate I want a good refrence for su(2) and it's aplecation
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Double slit experiment - with molecules?
  • · Replies 26 ·
Replies
26
Views
8K
Graduate Distinguishing between two quantum states
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Why Use Free Particle Eigenfunctions for One-Dimensional Quantum Problems?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Does Observation Influence Reality in Quantum Physics?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Entanglement - the Latest Insights?
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Difference between s-matrix and interactive field propagator?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How Does the Fermi Energy of Bare Protons Influence Chemical Reactions?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate How to Derive Pauli's Equation from Dirac's Equation in a Weak Field?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Measurement effect upon wave function
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Solid state quantum entanglement?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Homogeneous and inhomogenous relaxation time
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Quantum electromagnetic interference
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Experiments for time-energy uncertainty relation
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Solving QFT Problem: Deriving <k'|(\partial_\mu \phi^\dag)\phi|k>
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Schmidt decomposition and bipartite system
  • · Replies 8 ·
Replies
8
Views
7K
Graduate What Are the Unitaries in the Clifford Group?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate FTL Messaging: Does Violating Causality Follow?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Is the electromagnetic field quantized?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Effect of Intensity and Frequency on Photoelectric Current
  • · Replies 1 ·
Replies
1
Views
3K
Graduate QFT general properties operators
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Is the locality of the propagator affected by the value of M?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Quantum Entanglement: Bell's Telephone - Possible FTL Comms?
  • · Replies 5 ·
Replies
5
Views
9K
Graduate A Very Convincing Quantum Experiment?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Some Explanation with Pauli's Spin Matrices
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Confused about Parity Operator & Degeneracy in Quantum Mechanics
  • · Replies 4 ·
Replies
4
Views
8K
Graduate What Does the EPR Paper Reveal About Einstein's Views on Reality?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Is It Too Late to Learn Quantum Field Theory After Years in a Different Career?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Time Localization Same As Indeterminacy?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why can't their be zero-energy at the atomic scale
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Relaxation time and spatial width
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Time as a Basis Vector in Quantum Mechanics
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Can BM explain MUH?Is BM Incompatible with MUH and Consciousness?
  • · Replies 19 ·
Replies
19
Views
4K
Graduate What Determines the Lineshape in a Two-Level System with Spontaneous Emission?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Some explanation with spin qantum No
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Lie groups and angular momentum
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Is Planck's constant the key to understanding a quantum?
  • · Replies 60 ·
3
Replies
60
Views
9K
Graduate Implications of Quantum physics
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad What is meant by ths wave-particle duality of electrons?
  • · Replies 2 ·
Replies
2
Views
7K
Undergrad Why do two particles hold themselves together in a vacuum?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Confusion on Meaning of Momentum
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Desintegration of particle into 2 fermions
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Second order approximation in time independent perturbaton theory
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is Quantum Energy Teleportation Experimentally Viable?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Are Autoionizing States Necessary for Accurate Wavepacket Representations?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is Matter Infinitely Divisible?
  • · Replies 29 ·
Replies
29
Views
13K
Graduate Is it possible to capture (contain?) and electron?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What is Wave-Particle Duality in Quantum Physics?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Can We Use Quantum Mechanics to Reset Our Biological State?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Angular momentum and Hamiltonian commutator
  • · Replies 5 ·
Replies
5
Views
8K
Graduate Time Ordered Integrals Explained - Quantum Mechanics
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Degenerate pertubation theory when the first order fails
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why Tachyons Aren't Allowed in Physics Theory
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Quantum Energy Teleportation and Decoherence
  • · Replies 2 ·
Replies
2
Views
3K
Graduate How Do You Calculate the Position of a Neutron Using Wave Functions?
  • · Replies 1 ·
Replies
1
Views
2K