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Quantum Physics Forum

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

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TISE in the position representation- basic question

Jan 25, 2013 · Replies 5 · Jan 27, 2013

Replies: 5

Views: 2K

Correct understanding of symmetrization requirement?

Jan 23, 2013 · Replies 5 · Jan 27, 2013

Replies: 5

Views: 5K

Rotation Operator: Spin 1/2 vs Spin 1

Jan 26, 2013 · Replies 7 · Jan 27, 2013

Replies: 7

Views: 3K

Sound in Bose Einstein Condensates.

Jan 14, 2013 · Replies 8 · Jan 27, 2013

Replies: 8

Views: 5K

Can an Electron Have Zero Kinetic Energy in a Confined Space?

Jan 26, 2013 · Replies 6 · Jan 26, 2013

Replies: 6

Views: 2K

Why are the entries in the matrix arranged the way they are?

Jan 26, 2013 · Replies 4 · Jan 26, 2013

Replies: 4

Views: 2K

What is the meaning of differential cross section in scattering theory?

Jan 25, 2013 · Replies 4 · Jan 26, 2013

Replies: 4

Views: 2K

Equipment required to to the electron double slit experiment ?

Jan 21, 2013 · Replies 3 · Jan 26, 2013

Replies: 3

Views: 2K

Excite Photon: Can It Be Done?

Jan 22, 2013 · Replies 36 · Jan 25, 2013

2

Replies: 36

Views: 6K

How Do Coherence and Entanglement Affect Photon Interference?

Jan 25, 2013 · Replies 1 · Jan 25, 2013

Replies: 1

Views: 2K

Analytical Bra-Ket Tensor Products: Rules & Wolfram Mathematica

Jan 25, 2013 · Replies 1 · Jan 25, 2013

Replies: 1

Views: 2K

Entanglement/event horizon red/blue shift

Jan 24, 2013 · Replies 4 · Jan 25, 2013

Replies: 4

Views: 2K

Pair production and pair annihilation

Jan 25, 2013 · Replies 1 · Jan 25, 2013

Replies: 1

Views: 2K

Electromagnetically Induced Transparency Molecular Atom Selectivity?

Jan 16, 2013 · Replies 6 · Jan 24, 2013

Replies: 6

Views: 2K

Can Quantum Physics and Poetry Coexist in Understanding Reality?

Jan 15, 2013 · Replies 14 · Jan 23, 2013

Replies: 14

Views: 4K

Do properties associated with photons also apply to other bosons?

Jan 23, 2013 · Replies 3 · Jan 23, 2013

Replies: 3

Views: 2K

Solution to the Schrodinger equation

Jan 22, 2013 · Replies 1 · Jan 22, 2013

Replies: 1

Views: 2K

What are the kinds of mesurements that affect the wave function?

Jan 22, 2013 · Replies 7 · Jan 22, 2013

Replies: 7

Views: 2K

[MSc thesis ideas] Solar PV with use of quantum physics

Jan 13, 2013 · Replies 2 · Jan 22, 2013

Replies: 2

Views: 3K

SU(2) a double cover for Lorentz group?

Jan 16, 2013 · Replies 25 · Jan 22, 2013

Replies: 25

Views: 9K

The double slit experiment – What do I need to know?

Jan 15, 2013 · Replies 9 · Jan 22, 2013

Replies: 9

Views: 3K

How long does entanglement last?

Jan 21, 2013 · Replies 2 · Jan 21, 2013

Replies: 2

Views: 5K

Was there quantum mechanics before it was discovered?

Jan 8, 2013 · Replies 8 · Jan 21, 2013

Replies: 8

Views: 3K

Doubt in hidden variable concepts

Jan 10, 2013 · Replies 2 · Jan 21, 2013

Replies: 2

Views: 2K

Local realism ruled out? (was: Photon entanglement and )

Jan 13, 2010 · Replies 823 · Jan 21, 2013

28

Replies: 823

Views: 132K

Another question about bell inequality

Jan 20, 2013 · Replies 1 · Jan 20, 2013

Replies: 1

Views: 2K

Linear Sigma Model Invariance Under O(N)

Jan 19, 2013 · Replies 4 · Jan 20, 2013

Replies: 4

Views: 2K

Quantum mechanics for the nucleus?

Jan 20, 2013 · Replies 3 · Jan 20, 2013

Replies: 3

Views: 2K

Qubits and common calculations

Jan 20, 2013 · Replies 3 · Jan 20, 2013

Replies: 3

Views: 2K

Does light accelerate to its speed or is it instant?

Jan 18, 2013 · Replies 7 · Jan 20, 2013

Replies: 7

Views: 3K

QM Interpretation & Young's Exp: Electron Position Defined?

Jan 19, 2013 · Replies 1 · Jan 19, 2013

Replies: 1

Views: 2K

Wave functions for Coherence and Entanglement

Jan 19, 2013 · Replies 4 · Jan 19, 2013

Replies: 4

Views: 2K

Significance of Dirac to Wave Mechanics Model

Jan 19, 2013 · Replies 2 · Jan 19, 2013

Replies: 2

Views: 2K

What is the issue with an infinite universe on a N-sphere?

Sep 1, 2012 · Replies 55 · Jan 19, 2013

2

Replies: 55

Views: 10K

What Does Integrability Mean in Physics and Mathematics?

Jan 18, 2013 · Replies 6 · Jan 19, 2013

Replies: 6

Views: 3K

Infinity potential hole - transition to base state

Jan 14, 2013 · Replies 2 · Jan 19, 2013

Replies: 2

Views: 2K

Understanding Spin: Unpacking the Concept of Electron Angular Momentum

Jan 17, 2013 · Replies 1 · Jan 19, 2013

Replies: 1

Views: 2K

Thermal Equilibrium: Exchange of Kinetic Energy

Jan 13, 2013 · Replies 7 · Jan 18, 2013

Replies: 7

Views: 2K

Understand Faddeev-Popov Trick: Equation 9.53 Explained

Jan 16, 2013 · Replies 12 · Jan 18, 2013

Replies: 12

Views: 5K

Is there entanglement other than 50/50 energy? of the pump photon

Jan 17, 2013 · Replies 2 · Jan 18, 2013

Replies: 2

Views: 2K

Could Virtual Particles Explain the Acceleration of Galaxies?

Jan 17, 2013 · Replies 14 · Jan 17, 2013

Replies: 14

Views: 3K

In downconversion, can you get coherence between the signals from two sources?

Jan 11, 2013 · Replies 27 · Jan 17, 2013

Replies: 27

Views: 4K

Possibility of superluminal signals using quantum entanglement

Jan 13, 2013 · Replies 6 · Jan 17, 2013

Replies: 6

Views: 3K

Solutions of the free one-particle Klein Gordon equation

Jan 17, 2013 · Replies 1 · Jan 17, 2013

Replies: 1

Views: 1K

Physical meaning of wavefunction parameters x and t

Jan 13, 2013 · Replies 5 · Jan 17, 2013

Replies: 5

Views: 3K

Tunneling in a non-subatomic particles

Jan 16, 2013 · Replies 3 · Jan 17, 2013

Replies: 3

Views: 2K

Transition Dipole Moment and Electron Transfer

May 5, 2007 · Replies 6 · Jan 16, 2013

Replies: 6

Views: 14K

Formula for Commutator of f(n), a, a+ Bose operators

Jan 12, 2013 · Replies 11 · Jan 15, 2013

Replies: 11

Views: 2K

Is Dirac's equation still useful after QED is developed?

Jan 13, 2013 · Replies 18 · Jan 15, 2013

Replies: 18

Views: 5K

How can we add Angular Momenta in Quantum Mechanics?

Jan 14, 2013 · Replies 7 · Jan 15, 2013

Replies: 7

Views: 2K

Temporal complementarity- single and two-photon interference

Jan 14, 2013 · Replies 1 · Jan 15, 2013

Replies: 1

Views: 1K

How Do You Transition Between These Two Physics Equations?

Jan 14, 2013 · Replies 4 · Jan 15, 2013

Replies: 4

Views: 2K

Probability and quantum possibilities

Jan 13, 2013 · Replies 5 · Jan 14, 2013

Replies: 5

Views: 2K

Time independent Schrödinger equation

Jan 14, 2013 · Replies 2 · Jan 14, 2013

Replies: 2

Views: 2K

Is it a misprint in QFT book of Peskin?

Jan 14, 2013 · Replies 1 · Jan 14, 2013

Replies: 1

Views: 2K

Transmission and Processing of Information via Quantum Entanglement

Jan 14, 2013 · Replies 1 · Jan 14, 2013

Replies: 1

Views: 2K

Wheeler Feynman absorber theory and non locality

Jan 14, 2013 · Replies 1 · Jan 14, 2013

Replies: 1

Views: 2K

Are There Experiments Superior to Bell's Tests for Proving Quantum Entanglement?

Jan 13, 2013 · Replies 2 · Jan 13, 2013

Replies: 2

Views: 2K

Pair production - conservation of momentum VS conservation of energy

Jan 13, 2013 · Replies 9 · Jan 13, 2013

Replies: 9

Views: 16K

Pair production - which theory does it belong to

Jan 13, 2013 · Replies 5 · Jan 13, 2013

Replies: 5

Views: 2K

Understanding delayed choice experiment

Jan 12, 2013 · Replies 5 · Jan 13, 2013

Replies: 5

Views: 2K

Recording of data stopping interferrence pattern

Jan 7, 2013 · Replies 8 · Jan 13, 2013

Replies: 8

Views: 3K

Schrodinger's Cat - An Alteration

Jan 12, 2013 · Replies 2 · Jan 13, 2013

Replies: 2

Views: 2K

Uncertainty, Symmetry, and Commutators

Jan 6, 2013 · Replies 25 · Jan 12, 2013

Replies: 25

Views: 5K

Does different observer affect double slit particle experiment

Mar 23, 2010 · Replies 26 · Jan 12, 2013

Replies: 26

Views: 16K

Finding Matrix Elements of Operators in Quantum Mechanics

Jan 11, 2013 · Replies 2 · Jan 11, 2013

Replies: 2

Views: 2K

Amount of energy required to change path of a photon

Jan 11, 2013 · Replies 4 · Jan 11, 2013

Replies: 4

Views: 2K

Probability density from Wave Function

Jan 9, 2013 · Replies 2 · Jan 11, 2013

Replies: 2

Views: 3K

What is the correct convention for anti-fermions in Feynman diagrams?

Jan 10, 2013 · Replies 6 · Jan 11, 2013

Replies: 6

Views: 3K

Uncertainty principle,examining the «principle» part

Jan 11, 2013 · Replies 2 · Jan 11, 2013

Replies: 2

Views: 2K

Question About the Photoelectric Effect for Lower Frequencies

Jan 10, 2013 · Replies 1 · Jan 11, 2013

Replies: 1

Views: 2K

Reversal of limits of integration in the derivation of probability current density

Jan 6, 2013 · Replies 7 · Jan 10, 2013

Replies: 7

Views: 3K

Solving Gaussian Potential - Analyzing Energy Differences

Jan 9, 2013 · Replies 7 · Jan 10, 2013

Replies: 7

Views: 4K

Applying Schrodinger's Cat Experiment

Jan 4, 2013 · Replies 34 · Jan 10, 2013

2

Replies: 34

Views: 5K

Spin Quantum # in Triplet state

Jan 9, 2013 · Replies 1 · Jan 9, 2013

Replies: 1

Views: 2K

Production of bound states of slow fermions- Peskin 5.3

Jan 8, 2013 · Replies 3 · Jan 9, 2013

Replies: 3

Views: 3K

What is spin in subatomic particles

Jan 5, 2013 · Replies 5 · Jan 9, 2013

Replies: 5

Views: 2K

Has the Uncertainty Principle been defeated?

Jan 9, 2013 · Replies 3 · Jan 9, 2013

Replies: 3

Views: 2K

Electromagnetism its counterpart particle? And can it be used to create a PMF?

Jan 6, 2013 · Replies 4 · Jan 9, 2013

Replies: 4

Views: 2K

Are There Any Cases of Non-Constant Particle Mass in Solid State Theory?

Jan 9, 2013 · Replies 3 · Jan 9, 2013

Replies: 3

Views: 1K

Electron Exclusion via EIT/CPT?

Jan 6, 2013 · Replies 19 · Jan 9, 2013

Replies: 19

Views: 3K

Electron excitation, and inhibition with EIT/CPT?

Jan 8, 2013 · Replies 1 · Jan 8, 2013

Replies: 1

Views: 2K

How exactly do raising/lowering operators let you know the form of M?

Jan 8, 2013 · Replies 5 · Jan 8, 2013

Replies: 5

Views: 2K

Unraveling the Mystery of Observation & Wave Function Collapse

Jan 6, 2013 · Replies 8 · Jan 8, 2013

Replies: 8

Views: 3K

Can we apply superposition principle for states in Fock space?

Mar 21, 2011 · Replies 21 · Jan 7, 2013

Replies: 21

Views: 5K

Solving SE Numerically for Periodic Potential

Jan 7, 2013 · Replies 2 · Jan 7, 2013

Replies: 2

Views: 2K

What does touch look like in the subatomic world?

Jan 4, 2013 · Replies 5 · Jan 7, 2013

Replies: 5

Views: 3K

State callback in photon teleportation

Jan 7, 2013 · Replies 1 · Jan 7, 2013

Replies: 1

Views: 1K

What Does It Mean When Field Quanta Are Not Spatially Localized?

Dec 29, 2012 · Replies 4 · Jan 7, 2013

Replies: 4

Views: 2K

Can a particle entangle with itself?

Jan 2, 2013 · Replies 8 · Jan 7, 2013

Replies: 8

Views: 4K

Space between objects when Normal force equals 0

Dec 22, 2012 · Replies 9 · Jan 7, 2013

Replies: 9

Views: 2K

Can 2D Systems Simplify Path Integrals in 4D Minkowski Space?

Jan 6, 2013 · Replies 3 · Jan 7, 2013

Replies: 3

Views: 2K

Popular accounts of quantum computing

Jan 6, 2013 · Replies 1 · Jan 7, 2013

Replies: 1

Views: 2K

Macroscopic superpostion and hidden variable theories

Jan 5, 2013 · Replies 1 · Jan 7, 2013

Replies: 1

Views: 2K

Why Does One Photon of Light Cause the Emission of One Electron?

Dec 27, 2012 · Replies 11 · Jan 7, 2013

Replies: 11

Views: 2K

Infinite Universe, All Combinations of Matter Exist

Jan 5, 2013 · Replies 15 · Jan 6, 2013

Replies: 15

Views: 7K

What is Spin in Elementary Particles?

Dec 16, 2012 · Replies 6 · Jan 6, 2013

Replies: 6

Views: 3K

Photonic Properties Determining Charge

Jan 4, 2013 · Replies 10 · Jan 6, 2013

Replies: 10

Views: 3K

Quantum Gas Below Absolute Zero

Jan 6, 2013 · Replies 6 · Jan 6, 2013

Replies: 6

Views: 3K

What Factors Influence the Lifetimes of He S=1,0 States in Quantum Mechanics?

Jan 2, 2013 · Replies 7 · Jan 6, 2013

Replies: 7

Views: 2K

Quantum Physics

Quantum physics, or quantum mechanics, is a branch of physics that explores the behavior of matter and energy at the smallest scales, where classical physics principles break down. It introduces the concept of quantization, suggesting that certain properties, such as energy levels, are quantized and can only exist in discrete values.

Quantum mechanics encompasses wave-particle duality, where particles like electrons exhibit both wave and particle characteristics. The theory is probabilistic, relying on probability amplitudes to predict outcomes, and features phenomena like superposition, where particles can exist in multiple states simultaneously.

Quantum physics has transformed our understanding of the microscopic world, leading to technologies like transistors and lasers, and continues to provoke profound questions about the nature of reality and the role of observation in shaping it.

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