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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

A Universal quantum physics

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What is Decoherence and How Does It Solve Schrodinger's Cat Paradox?

Dec 14, 2004 · Replies 17 · Dec 15, 2004

Replies: 17

Views: 5K

What Are Stationary States in Quantum Mechanics?

Dec 11, 2004 · Replies 10 · Dec 15, 2004

Replies: 10

Views: 7K

Complex amplitude,Feynman diagrams

Dec 8, 2004 · Replies 2 · Dec 15, 2004

Replies: 2

Views: 6K

Time and Space: Illusions or Truths?

Dec 8, 2004 · Replies 6 · Dec 15, 2004

Replies: 6

Views: 3K

Wavefunctions space in Quantum Physics

Dec 13, 2004 · Replies 11 · Dec 14, 2004

Replies: 11

Views: 3K

What is ASE and What Does Measuring its Spectrum Tell Us?

Dec 7, 2004 · Replies 2 · Dec 14, 2004

Replies: 2

Views: 3K

How is the Tensor Product Defined and Used in Vector Spaces?

Dec 8, 2004 · Replies 4 · Dec 13, 2004

Replies: 4

Views: 3K

Is Spin 1/2 Really That Difficult to Understand?

Dec 11, 2004 · Replies 7 · Dec 12, 2004

Replies: 7

Views: 3K

Math and Quantum Theory Assistance on a Forum: Tips for Entering Formulas

Dec 4, 2004 · Replies 2 · Dec 11, 2004

Replies: 2

Views: 2K

Perturbation and Variational Theory

Dec 4, 2004 · Replies 2 · Dec 11, 2004

Replies: 2

Views: 3K

Using a weight function for inner product/normalization

Nov 28, 2004 · Replies 5 · Dec 11, 2004

Replies: 5

Views: 4K

Is There Energy in Magnetic Fields?

Jun 26, 2004 · Replies 5 · Dec 10, 2004

Replies: 5

Views: 11K

QM field separation principle

Dec 9, 2004 · Replies 2 · Dec 9, 2004

Replies: 2

Views: 2K

Atomic Structure: Explaining n=6 Shell & Largest Angular Momentum Quantum Number

Dec 2, 2004 · Replies 2 · Dec 9, 2004

Replies: 2

Views: 3K

Photoelectric effect - scattering differential cross section

Dec 7, 2004 · Replies 3 · Dec 9, 2004

Replies: 3

Views: 9K

Solving Ladderoperator Problem for c_+ Expressed in j and m

Dec 8, 2004 · Replies 3 · Dec 9, 2004

Replies: 3

Views: 2K

Classical Tunneling: Instantons Explained

Dec 6, 2004 · Replies 3 · Dec 8, 2004

Replies: 3

Views: 3K

Quark confinement in early universe

Dec 1, 2004 · Replies 2 · Dec 8, 2004

Replies: 2

Views: 2K

Is the Formula for Calculating Cross Sections in Quantum Mechanics Correct?

Dec 2, 2004 · Replies 9 · Dec 7, 2004

Replies: 9

Views: 3K

How is the wavefunction defined in the double slit experiment for electrons?

Dec 7, 2004 · Replies 2 · Dec 7, 2004

Replies: 2

Views: 2K

What Makes Quantum Entanglement So Spooky?

Dec 5, 2004 · Replies 12 · Dec 7, 2004

Replies: 12

Views: 8K

Photon Question: Attraction and Repulsion

Nov 26, 2004 · Replies 7 · Dec 7, 2004

Replies: 7

Views: 2K

Understanding Heat and Molecular Vibration: Causes and Confusion Explained - Ty

Nov 30, 2004 · Replies 2 · Dec 7, 2004

Replies: 2

Views: 2K

Quantum Mechanics & F=ma: What Replaces F=ma in Atoms?

Dec 4, 2004 · Replies 7 · Dec 7, 2004

Replies: 7

Views: 3K

Why Does the Expectation Value Depend on the Space Used?

Nov 24, 2004 · Replies 8 · Dec 6, 2004

Replies: 8

Views: 4K

Momentum probability Distribution

Dec 6, 2004 · Replies 5 · Dec 6, 2004

Replies: 5

Views: 18K

From the Schrödinger equation to the wavepacket reduction axiom

Nov 30, 2004 · Replies 2 · Dec 6, 2004

Replies: 2

Views: 2K

Quantum Numbers: Meaning & Significance

Nov 28, 2004 · Replies 2 · Dec 5, 2004

Replies: 2

Views: 3K

The Causality Problem and Tunneling: An Overview

Dec 5, 2004 · Replies 3 · Dec 5, 2004

Replies: 3

Views: 2K

Quantum Mechanics vs Classical Theory: Applying Them to Different Scales

Nov 30, 2004 · Replies 9 · Dec 5, 2004

Replies: 9

Views: 2K

What is the role of canonical momentum in quantum mechanics?

Nov 18, 2004 · Replies 28 · Dec 4, 2004

Replies: 28

Views: 18K

Why must the solution to the hydrogen atom's angular equation only be one term?

Dec 2, 2004 · Replies 10 · Dec 3, 2004

Replies: 10

Views: 3K

Is There an Equation for Quantum Randomness?

Nov 27, 2004 · Replies 27 · Dec 3, 2004

Replies: 27

Views: 5K

What Are Wayne Myrvold's Key Insights on Quantum Entanglement?

Nov 24, 2004 · Replies 2 · Dec 3, 2004

Replies: 2

Views: 3K

X Rays vs. Radio Waves - Danger to Humans.

Nov 27, 2004 · Replies 13 · Dec 3, 2004

Replies: 13

Views: 24K

Understanding the Significance of Schrödinger Equation in Quantum Mechanics

Dec 1, 2004 · Replies 12 · Dec 3, 2004

Replies: 12

Views: 5K

A question about energy in a harmonic potential

Nov 21, 2004 · Replies 6 · Dec 2, 2004

Replies: 6

Views: 2K

Particle in a Box: Solving Qs on Lowest Energy & Highest Probability

Dec 2, 2004 · Replies 3 · Dec 2, 2004

Replies: 3

Views: 3K

Hydrogen atom and probabilities

Nov 30, 2004 · Replies 6 · Dec 2, 2004

Replies: 6

Views: 5K

Is Movement Just Tiny Quantum Jumps Through Space?

Nov 24, 2004 · Replies 2 · Dec 1, 2004

Replies: 2

Views: 16K

Magnetic Monopoles: Size, Quantization, and Existence in Space

Dec 1, 2004 · Replies 2 · Dec 1, 2004

Replies: 2

Views: 3K

Can anyone help me with this problem regarding photoelectrons?

Nov 24, 2004 · Replies 4 · Nov 30, 2004

Replies: 4

Views: 4K

Accelerated Detector in Minkowski Vacuum: Effects & Quantification

Nov 24, 2004 · Replies 4 · Nov 30, 2004

Replies: 4

Views: 2K

Quantum vs GR: How BIG is Time?

Nov 26, 2004 · Replies 2 · Nov 29, 2004

Replies: 2

Views: 3K

Infinite Energy Through Extradimensions?

Nov 23, 2004 · Replies 13 · Nov 28, 2004

Replies: 13

Views: 5K

Is a photon an EM wave packet?

Nov 24, 2004 · Replies 6 · Nov 27, 2004

Replies: 6

Views: 12K

Can a Casimir Engine Defy Inertia in a Spinning Centrifuge?

Nov 15, 2004 · Replies 4 · Nov 27, 2004

Replies: 4

Views: 2K

Understanding Photon Absorption in Molecules: Causes and Implications

Nov 20, 2004 · Replies 2 · Nov 27, 2004

Replies: 2

Views: 3K

Exploring Entanglement Measures: Bridging Physics and Quantum Information Theory

Nov 23, 2004 · Replies 14 · Nov 26, 2004

Replies: 14

Views: 4K

MRI: proton relaxation signal direction

Nov 19, 2004 · Replies 2 · Nov 26, 2004

Replies: 2

Views: 5K

Does Superfluid Helium Behave as a Single Particle with Unified Spin?

Oct 20, 2004 · Replies 2 · Nov 25, 2004

Replies: 2

Views: 3K

Is my methodology for learning density functional theory correct?

Nov 4, 2004 · Replies 2 · Nov 25, 2004

Replies: 2

Views: 3K

Center of Mass Problem: Treating Corrections

Nov 18, 2004 · Replies 2 · Nov 25, 2004

Replies: 2

Views: 2K

What Spectral Series Appear in the Absorption Spectrum of Ground State Hydrogen?

Oct 20, 2004 · Replies 2 · Nov 25, 2004

Replies: 2

Views: 3K

Schrodinger probability problem

Nov 16, 2004 · Replies 2 · Nov 25, 2004

Replies: 2

Views: 4K

Photoelectric Effect: Light Particle or Wave?

Nov 18, 2004 · Replies 2 · Nov 24, 2004

Replies: 2

Views: 2K

Could someone explain fire on the atomic level?

Nov 23, 2004 · Replies 2 · Nov 24, 2004

Replies: 2

Views: 3K

Can Multiple Routes in Wave-Particle Duality Be Observed?

Nov 21, 2004 · Replies 5 · Nov 24, 2004

Replies: 5

Views: 2K

How does the kinetic nature of music relate to physics?

Oct 31, 2004 · Replies 2 · Nov 24, 2004

Replies: 2

Views: 2K

Understanding the Equation for High Speed Energy

Nov 23, 2004 · Replies 4 · Nov 23, 2004

Replies: 4

Views: 4K

Question about wavefunction prob.

Nov 20, 2004 · Replies 7 · Nov 23, 2004

Replies: 7

Views: 2K

Probability distribution problem

Nov 22, 2004 · Replies 6 · Nov 23, 2004

Replies: 6

Views: 3K

IBM 7-qubit NMR Quantum Computer

Nov 22, 2004 · Replies 3 · Nov 23, 2004

Replies: 3

Views: 6K

What is the derivation of the Pauli Exclusion Principle?

Nov 21, 2004 · Replies 6 · Nov 22, 2004

Replies: 6

Views: 4K

Is there a typo in this vector wave-function transformation?

Nov 17, 2004 · Replies 2 · Nov 21, 2004

Replies: 2

Views: 2K

Is an Electromagnetic Wave Truly 2D or 3D in Nature?

Nov 18, 2004 · Replies 4 · Nov 20, 2004

Replies: 4

Views: 12K

Where Is the Intersection of Quantum Physics and Spirituality Leading?

Nov 19, 2004 · Replies 12 · Nov 20, 2004

Replies: 12

Views: 3K

Number of Quantum Levels & Math Defining Them: Hydrogen

Sep 4, 2004 · Replies 11 · Nov 20, 2004

Replies: 11

Views: 3K

Wave particle duality & double slit

Nov 17, 2004 · Replies 18 · Nov 20, 2004

Replies: 18

Views: 5K

Does the Frequency of a Photon Reveal Its Age in the Universe's Evolution?

Nov 8, 2004 · Replies 22 · Nov 20, 2004

Replies: 22

Views: 14K

A Poll about Quantum Tunnelling

Nov 14, 2004 · Replies 9 · Nov 19, 2004

Replies: 9

Views: 4K

Exploring Fields: Electromagnetic, Strong, Weak, Gravitational & Higgs

Nov 9, 2004 · Replies 4 · Nov 19, 2004

Replies: 4

Views: 2K

Explain me Einstein-Podolski-Rosen effect

Nov 14, 2004 · Replies 7 · Nov 19, 2004

Replies: 7

Views: 3K

Where is all this Energy comming from?

Nov 18, 2004 · Replies 5 · Nov 19, 2004

Replies: 5

Views: 2K

Solved: Is Fermi-Dirac a Solution of Boltzmann Equation?

Nov 10, 2004 · Replies 2 · Nov 19, 2004

Replies: 2

Views: 2K

Antiferromagnetic/ferromagnetic coupling

Nov 8, 2004 · Replies 2 · Nov 19, 2004

Replies: 2

Views: 15K

Everything in the universe is deterministic

Nov 11, 2004 · Replies 2 · Nov 18, 2004

Replies: 2

Views: 2K

Does Mass Decrease as it Emits Gravitational Force?

Nov 16, 2004 · Replies 5 · Nov 18, 2004

Replies: 5

Views: 2K

What is the largest quantity of superfluid ever created?

Nov 15, 2004 · Replies 2 · Nov 18, 2004

Replies: 2

Views: 3K

What Are the Best Quantum Physics Books for Undergraduates?

Nov 14, 2004 · Replies 8 · Nov 18, 2004

Replies: 8

Views: 6K

Max Planck & UV Catastrophe: Explained in Detail

Nov 18, 2004 · Replies 2 · Nov 18, 2004

Replies: 2

Views: 3K

Understanding Quantum Mechanics 101

Nov 16, 2004 · Replies 2 · Nov 17, 2004

Replies: 2

Views: 2K

Quantum Randomness Explained: A Beginner's Guide

Nov 10, 2004 · Replies 15 · Nov 17, 2004

Replies: 15

Views: 5K

Two black holes and a particle.

Nov 16, 2004 · Replies 4 · Nov 17, 2004

Replies: 4

Views: 2K

Is the Higgs Field a New Perspective on Gravity Beyond General Relativity?

Nov 16, 2004 · Replies 4 · Nov 17, 2004

Replies: 4

Views: 2K

Heisenberg's uncertianty principle

Nov 9, 2004 · Replies 2 · Nov 17, 2004

Replies: 2

Views: 2K

Explaining Acceleration of Electron in Bohr Model

Nov 15, 2004 · Replies 11 · Nov 16, 2004

Replies: 11

Views: 6K

Help me make sense of this quantum universe

Nov 15, 2004 · Replies 5 · Nov 16, 2004

Replies: 5

Views: 2K

Can Different Wavelengths Measure Particle Momentum and Position Simultaneously?

Nov 15, 2004 · Replies 5 · Nov 16, 2004

Replies: 5

Views: 2K

What Natural Phenomena Produce Coherent Light in Lasers?

Nov 5, 2004 · Replies 9 · Nov 15, 2004

Replies: 9

Views: 5K

The Standard Model: Leptons, Quarks & Bosons

Nov 15, 2004 · Replies 6 · Nov 15, 2004

Replies: 6

Views: 3K

Quantum Mechanical Simple Harmonics Question

Nov 14, 2004 · Replies 3 · Nov 15, 2004

Replies: 3

Views: 3K

Critique My Explanation of QM re: the Observer,

Nov 11, 2004 · Replies 23 · Nov 13, 2004

Replies: 23

Views: 4K

Debrolie Redshift missing energy?

Nov 12, 2004 · Replies 4 · Nov 13, 2004

Replies: 4

Views: 3K

Are Quantum Mechanics and Relativity Logically Compatible Theories?

Nov 12, 2004 · Replies 7 · Nov 13, 2004

Replies: 7

Views: 8K

What Sets Chronon Apart from Planck's Time?

Sep 21, 2003 · Replies 5 · Nov 13, 2004

Replies: 5

Views: 8K

Normalize Wave Function: Find A Value

Nov 11, 2004 · Replies 3 · Nov 12, 2004

Replies: 3

Views: 8K

Evaluating Commutator for Operators on f(x)

Nov 10, 2004 · Replies 17 · Nov 12, 2004

Replies: 17

Views: 4K

What are the main algorithms used in quantum computing?

Oct 14, 2004 · Replies 26 · Nov 12, 2004

Replies: 26

Views: 5K

Sum-over-histories+Light cone=?

Nov 5, 2004 · Replies 8 · Nov 11, 2004

Replies: 8

Views: 3K

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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