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 Understanding Barandes' microscopic theory of causality
Graduate Oscillation in Charged Particles
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad What energy do electrons actually take in an orbital?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Probability of a wave function
  • · Replies 3 ·
Replies
3
Views
5K
Graduate What is the generalization of the BAC-CAB rule for operators?
  • · Replies 4 ·
Replies
4
Views
8K
Graduate Can Bosons and Leptons Coexist in Same Space?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Casimir Effect - min. distance between plates
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Reasons for natural occuring forces
  • · Replies 20 ·
Replies
20
Views
3K
Graduate Phase and signal velocity of light inside a medium
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Is a proton's movement considered a subject of Quantum Mechanics?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Where are the anti-particles in a nuclie?
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Exploring Quantum Leap: Causes, Effects, & Possibilities
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Is Teleportation Mathematically or Theroretically Possible
  • · Replies 3 ·
Replies
3
Views
3K
Graduate A question from Weinberg's qft book
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Planck's Constant Related to Velocity of Light?
  • · Replies 5 ·
Replies
5
Views
6K
Graduate Electromagnetic Force: Where Does Virtual Photon Get Its Energy?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Hartree-Fock Method vs. Configuration Interaction
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Does Pauli's Exclusion Principle Prevent Atoms from Coexisting in Stars?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Two Slit Experiment Setup and Variables
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Reasons for phtonic radiation?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Symmetric/Antisymmetric states in nature?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Why Hamiltonian and L^2 Don't Commute in Linear Molecules
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Understanding of double silts experiment
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Atomic & Molecular Symbols: What Do They Mean?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate How is entropy defined by boundary area in Holographic Principle?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is the Casimir Effect the Same for Insulators as for Metals?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Hartree & Hartree-Fock: What's the Difference?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Reduce QED to QM: A Restatement Based on Creation/Annihilation Operators
  • · Replies 14 ·
Replies
14
Views
4K
Graduate Wave function and orbital question
  • · Replies 3 ·
Replies
3
Views
4K
Graduate A single photon traveling in space
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Deterministic Quantum Mechanics?
  • · Replies 22 ·
Replies
22
Views
5K
Graduate How Does a Delta Potential Affect Bound States in a Quantum Infinite Well?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Wave Packet: What Is It? | Abhimanyu
  • · Replies 3 ·
Replies
3
Views
6K
Graduate What do the symbols in quantum equations mean?
  • · Replies 8 ·
Replies
8
Views
10K
Graduate Could space-time be a property of matter in string theory?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate QED: reflection of light in glass
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Can I Tell if a State is Ground State?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate What's actually happening in the photovoltaic effect
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Model QM Behavior of Particle as Probability Waveguide
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Single photon and the double slit
  • · Replies 20 ·
Replies
20
Views
7K
Graduate Negative energy in Dirac theory
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad What path do electrons actually take in an orbital
  • · Replies 42 ·
2
Replies
42
Views
19K
Undergrad Electrons Jumping: What Does it Mean?
  • · Replies 4 ·
Replies
4
Views
6K
Graduate How to Label Spin Hamiltonian by Ms in EPR Experiments?
  • · Replies 4 ·
Replies
4
Views
5K
Graduate Entanglement between particles of no common history
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Is Compton Scattering Valid at 180 Degrees?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Another Stern-Gerlach Question
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Interaction picture (Is there a mistake in QFT books?)
  • · Replies 3 ·
Replies
3
Views
4K
Graduate State of an electron, including spin
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Heuristic explanation of why quantum mechanics plus SR imply antiparticles
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Sudden Approximation and Adiabatic theorem
  • · Replies 1 ·
Replies
1
Views
14K
Graduate Treating operators with continuous spectra as if they had actual eigenvectors?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate IV curve on photoelectric effect
  • · Replies 1 ·
Replies
1
Views
8K
Graduate Phonons vs Gauge Bosons: What's the Difference?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Is There a Link Between the Brain and Dark Energy?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Solving Potential V with Schrodinger Equation
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Fundamental reason behind Aufbau principle
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Adiabatic Spin Manipulation in EPR Experiment
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Looking for Layman's Physical Explanation for the lowest energy level in atoms
  • · Replies 29 ·
Replies
29
Views
5K
Graduate When a particle tunnels where does the energy come from
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Photons determine the property of an electromagnetic wave
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Quantum Fluctuations of Negative Energy
  • · Replies 7 ·
Replies
7
Views
3K
Graduate What is the Lamb-Dicke regime and how does it impact ion trapping experiments?
  • · Replies 2 ·
Replies
2
Views
12K
Graduate Stern-Gerlach Question: Can Interference be Seen?
  • · Replies 12 ·
Replies
12
Views
4K
Graduate Raising and lowering operators acting on spin 1 kets?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Quantized vs. Continuous Variables
  • · Replies 11 ·
Replies
11
Views
7K
Graduate Why Is the Uncertainty Principle Considered Strange?
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Quantum physics vs classical physics
  • · Replies 2 ·
Replies
2
Views
5K
Graduate The Hilbert space of non-relativistic QM
  • · Replies 5 ·
Replies
5
Views
3K
Graduate About momentum operator in other coordinate system
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Quantum Mechanics: Wave-Particle Duality & Paradox
  • · Replies 38 ·
2
Replies
38
Views
7K
Graduate Direct Position Measurement on a Microscopic Scale with Twin Photons
  • · Replies 48 ·
2
Replies
48
Views
9K
Graduate Spin ½ Particles: Turning Twice for Identical Results
  • · Replies 15 ·
Replies
15
Views
6K
Graduate Identical bosons vs. fermions in square potential well
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Gauge Invariance: Classical vs Quantum
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Pauli's Wave Mechanics text. h vs. hbar
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Understanding the Dressed Particle Approach to Quantum Field Theory
  • · Replies 19 ·
Replies
19
Views
11K
Graduate What is Quantum Theory and Why Do Electrons Orbit at Specific Distances?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Product State Bra Order: Correct Form?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Reflection and the measurement, and time irreversibility
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Why do we use short wavelength photons in Compton scattering?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Does the calculated large cosmological constant in falsify QFT?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Quantization and fluid mechanics?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Evaluating Feynman diagram in QFT without external fermion lines
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Understanding Energy Partition in Laser Cavity: Molecules vs. Radiation
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Raising and lowering operators on a ket?
  • · Replies 18 ·
Replies
18
Views
4K
Graduate Orders of magnutide in Heisenberg's uncertainty principle
  • · Replies 3 ·
Replies
3
Views
3K
Graduate The intense laser-atom physics and ionized electron
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Adjoint Operator: Use & Benefits
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Path Integral Doubt: How Did Shankar Deduce S/h>pi?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Heisenberg's Principle: Understanding Time & Energy
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Understanding Spin States in Quantum Mechanics
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Basics of Quantum Chemistry, especially entanglement
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Is a Photon Massless or Does it Have Relativistic Mass?
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Operating on spin angular momenta
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Pulsing a diode laser with very long pulses and very low repetition rates
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Two Identical Particles w/ Spin State s
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Born vs ABL Rules: How Do They Relate to Time Reversal in Quantum Mechanics?
  • · Replies 15 ·
Replies
15
Views
5K
Graduate Greatest accuracy in the |mn> state is |n| = m
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Conjugate Variables: Uncertainty Relation Explained
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Question about the delta function
  • · Replies 1 ·
Replies
1
Views
2K