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
Undergrad Double slit experiment - quick question
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What the state of Quantum mechanics (QM) is?
  • · Replies 15 ·
Replies
15
Views
4K
Graduate Mach-Zehnder Interferometer at Wiki Question
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Question About Harmonic Oscillator in Griffiths - E=0 or E=1/2hw?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate What Is the Role of the Hamiltonian in Quantum Mechanics?
  • · Replies 35 ·
2
Replies
35
Views
6K
Graduate Rotate Photon Polarization: 90 Degrees?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Pauli exclusion principle question
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Kinetic Energy in Non-Normalized Particle State
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Quantizing a two-dimensional Fermion Oscillator
  • · Replies 88 ·
3
Replies
88
Views
23K
Graduate Laser Tube Cavities: Increasing Power w/Mirrors?
  • · Replies 4 ·
Replies
4
Views
5K
Graduate Distinguish Orthogonal Qubits: Test & Impact
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Rotating Bose gases, quantum vortices
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Dimensional Regularization of an Integral
  • · Replies 2 ·
Replies
2
Views
5K
Graduate What if Planck's Constant was 6.63x10^30?
  • · Replies 15 ·
Replies
15
Views
6K
Graduate Exclusion Principle and Symmetry in Multi-Electron Systems
  • · Replies 13 ·
Replies
13
Views
3K
Graduate R. Slansky, Group theory for unified model building
  • · Replies 5 ·
Replies
5
Views
5K
Undergrad Why Was "h" Chosen for Planck's Constant?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Feynman's QED Lectures: Questions about partial reflection
  • · Replies 5 ·
Replies
5
Views
6K
Graduate Time depending quantum solution
  • · Replies 1 ·
Replies
1
Views
2K
Graduate The dangers of heuristic reasoning
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Clebsch-Gordan coefficients for spin-one particle decomposition
  • · Replies 16 ·
Replies
16
Views
7K
Graduate Particle in 1-D Box: Pressure Force on Wall
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What are some common questions about Peskin's QFT book?
  • · Replies 3 ·
Replies
3
Views
5K
Graduate Is the Born Rule Rooted in Classical Wave Energy Principles?
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Destroying interference pattern of classical waves
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Why are Photons Massless? Zach's Questions
  • · Replies 10 ·
Replies
10
Views
4K
Graduate How does the photon absorption process work in atoms?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate QFT and local gauge invariance
  • · Replies 5 ·
Replies
5
Views
8K
Graduate Counter example to the Bloch's theorem?
  • · Replies 11 ·
Replies
11
Views
5K
Graduate QFT: Find Poincare Group Generators in QFT
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Does the uncertainty principle break symmetry?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Why Does a Wave Packet Better Describe a Particle in Quantum Mechanics?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Understanding Bras and Kets as Vectors and Tensors
  • · Replies 154 ·
6
Replies
154
Views
23K
Graduate FAQ - Do Photons Move Slower in a Solid Medium?
  • · Replies 8 ·
Replies
8
Views
8K
Graduate Simulate Light Not Polarized Using Jones Formalism
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Uncovering the Randomness of Thermal Noise and Nuclear Decay
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Field operators - how do they work?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate What is the significance of parity in group theory?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What Is the Cardinality of Bloch Waves in Quantum Mechanics?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How Do You Compute Non-Integer Powers of Quantum Operators?
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Feynman's perspective on the double slit
  • · Replies 11 ·
Replies
11
Views
6K
Undergrad Question about refraction experiments
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad What is the Pauli exclusion principle?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Finding Eigenvalues of Dirac Matrices with Constraint Conditions
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Stark Effect using first order variation theory.
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Black Body Radiation: Why Maintaining Constant Temp?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Massless Schrödinger equation
  • · Replies 27 ·
Replies
27
Views
9K
Graduate Is the Entropy of the Universe Zero? Entropy as Entanglement)
  • · Replies 10 ·
Replies
10
Views
14K
Graduate Lagrangians in Quantum Mechanics
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Can Random Symmetry Breakings Explain Quantum Oddities?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Do protons and neutrons have a wavefunctions?
  • · Replies 3 ·
Replies
3
Views
8K
Undergrad What Happens to Matter if Electron Orbit Speed is Slowed?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Does Schrodinger's Cat Qualify as an Observer in Quantum Mechanics?
  • · Replies 24 ·
Replies
24
Views
5K
Graduate Negative energy in Dirac equation
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Electromagentic Field vs. Gravity Field
  • · Replies 12 ·
Replies
12
Views
3K
Graduate What is the purpose of using a potential well to model a particle's confinement?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Understanding Atom Orbital Calculations: Wave Equations, Calculus, and Matrices
  • · Replies 5 ·
Replies
5
Views
10K
Graduate Questions on Virtual Particles
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Hydrino and Inverse Quantum States
  • · Replies 3 ·
Replies
3
Views
4K
Graduate The Mach-Zehnder interferometer experiment
  • · Replies 19 ·
Replies
19
Views
13K
Graduate Some Confusion with Path Integrals
  • · Replies 17 ·
Replies
17
Views
4K
Graduate What is the Significance of Planck's Constant and its Reduced Form?
  • · Replies 13 ·
Replies
13
Views
9K
High School Spectral Lines - What Determines Their Width?
  • · Replies 5 ·
Replies
5
Views
9K
Graduate Degenerate matter total energy
  • · Replies 15 ·
Replies
15
Views
3K
Graduate How can we reconcile the different vector dimensions in QM equations?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Looking for heterostructures articles
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Difference between Mixed State and Superposition
  • · Replies 6 ·
Replies
6
Views
10K
Graduate What is the smallest Quantum of Energy?
  • · Replies 4 ·
Replies
4
Views
13K
Graduate Understanding Orthogonal Integral on Introduction to Quantum Mechanics
  • · Replies 3 ·
Replies
3
Views
5K
Graduate How is the 4-momentum 4-vector defined in relativistic QM?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Why do we have the Heisenberg principle?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate The physical meaning of Schrödinger's equation
  • · Replies 2 ·
Replies
2
Views
14K
Undergrad Looking for resources to do with energy transfer.
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Solving Shrodinger Eqn for Constrained System: Negative Energy Levels?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate What is the relationship between Special Relativity and Quantum Mechanics?
  • · Replies 22 ·
Replies
22
Views
4K
Graduate Understanding Expectation Value in Quantum Mechanics: A Closer Look
  • · Replies 1 ·
Replies
1
Views
3K
Graduate One-dimensional box of some width with a particle inside
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Wave Function Zero At Infinity?
  • · Replies 22 ·
Replies
22
Views
16K
Graduate Can Quantum Tunneling Explain the Proton's Energy Source?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Grover's algorithm on entangled states
  • · Replies 1 ·
Replies
1
Views
3K
Graduate How close are mankind to creating a quantum computer?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Matter Waves As Standing Waves
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Linearity of momentum operator
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Understanding the Compton Effect: Derivation of the Equation
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Graviton energy and frequency/wavelength?
  • · Replies 9 ·
Replies
9
Views
9K
Graduate Viruses and Quantum Mechanical Spreading
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Probability Wave Function Ψ(r,t): Time Independence
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Why do different frequency EM Waves behave different ?
  • · Replies 20 ·
Replies
20
Views
5K
Undergrad Trace in statistical mechanics
  • · Replies 7 ·
Replies
7
Views
10K
Graduate Uncertainty Principle: Position Uncertainty of Electrons
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Separating Hamiltonian functions. Helium atom.
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Total Angular Momentum of Many Particles
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Connecting n-Point Functions, Feynman Diagrams & S-Matrix
  • · Replies 8 ·
Replies
8
Views
5K
Graduate Self-taught Quantum Field Theory
  • · Replies 40 ·
2
Replies
40
Views
22K
Graduate Group Theory Q: Deriving (10.80) Detail Calc
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Calculating Non-abelian Anomalies: Who Can Do It?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Explaining Basic Quantum Mechanics to Unkraut
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Shifting Constraints in the Particle in a Box System
  • · Replies 1 ·
Replies
1
Views
2K
Graduate QFT: Invariant Measures & Rotational Invariance Explained
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Observation and the Double Slit Expt
  • · Replies 7 ·
Replies
7
Views
4K