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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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Which one is the Planck's constant?

Apr 26, 2005 · Replies 11 · Apr 27, 2005

Replies: 11

Views: 15K

What is the Justification for Using a Delta Function in the Feynman Propogator?

Apr 26, 2005 · Replies 7 · Apr 27, 2005

Replies: 7

Views: 2K

What if the path difference between two routes is different?

Apr 25, 2005 · Replies 2 · Apr 26, 2005

Replies: 2

Views: 6K

Gravity Quantized (~GRAVITON~ )

Apr 24, 2005 · Replies 2 · Apr 25, 2005

Replies: 2

Views: 3K

Need help getting started with QM

Apr 25, 2005 · Replies 4 · Apr 25, 2005

Replies: 4

Views: 2K

What is a isotropic harmonic potential?

Apr 18, 2005 · Replies 2 · Apr 25, 2005

Replies: 2

Views: 4K

Solving a Quantum Field Theory Question on Electron-Positron Pair Creation

Apr 23, 2005 · Replies 5 · Apr 25, 2005

Replies: 5

Views: 3K

Poynting's vector - Observable - Force?

Apr 24, 2005 · Replies 6 · Apr 25, 2005

Replies: 6

Views: 3K

Between classical or quantum statistics

Apr 22, 2005 · Replies 4 · Apr 25, 2005

Replies: 4

Views: 5K

Does Q-superposition have an effect on gravity?

Apr 25, 2005 · Replies 2 · Apr 25, 2005

Replies: 2

Views: 2K

How does light reflection occur after being absorbed by atoms?

Apr 20, 2005 · Replies 10 · Apr 25, 2005

Replies: 10

Views: 3K

QED could precisely predict the magnetic moment of electron

Apr 24, 2005 · Replies 8 · Apr 25, 2005

Replies: 8

Views: 2K

Is Wave-Particle Duality of Matter Truly Understood?

Apr 21, 2005 · Replies 10 · Apr 25, 2005

Replies: 10

Views: 3K

Can Electrons Teleport in Quantum Mechanics?

Apr 18, 2005 · Replies 2 · Apr 25, 2005

Replies: 2

Views: 2K

Equivalence between path integral formulation and matrix formulation

Apr 17, 2005 · Replies 2 · Apr 24, 2005

Replies: 2

Views: 4K

What Are the Possible Total Spins for a Three-Particle Spin-1/2 System?

Apr 24, 2005 · Replies 5 · Apr 24, 2005

Replies: 5

Views: 2K

What other classic quantum experiments are essential for beginners to know?

Apr 22, 2005 · Replies 2 · Apr 24, 2005

Replies: 2

Views: 2K

What substance makes up E and B fields in EM wave

Apr 16, 2005 · Replies 27 · Apr 24, 2005

Replies: 27

Views: 4K

What is the smallest thing we can see with an electron microscope?

Apr 22, 2005 · Replies 10 · Apr 23, 2005

Replies: 10

Views: 7K

Can Angular Momentum Eigenstates Defy the Uncertainty Principle?

Apr 23, 2005 · Replies 5 · Apr 23, 2005

Replies: 5

Views: 2K

Quantum Mechanical Conceptual Problems

Apr 21, 2005 · Replies 4 · Apr 22, 2005

Replies: 4

Views: 3K

Building and Demonstrating the Two-Slit Experiment at Home

Apr 21, 2005 · Replies 3 · Apr 22, 2005

Replies: 3

Views: 6K

Is There a Material That Allows Light to Travel Faster Than in a Vacuum?

Apr 15, 2005 · Replies 2 · Apr 22, 2005

Replies: 2

Views: 2K

Quantum Mystery #1 - Complementarity Principle

Apr 21, 2005 · Replies 6 · Apr 21, 2005

Replies: 6

Views: 2K

What is Pure Energy? E=mc^2 Explained

Apr 21, 2005 · Replies 2 · Apr 21, 2005

Replies: 2

Views: 5K

Convert cm^-1 to eV: Solve with Solution

Apr 14, 2005 · Replies 2 · Apr 21, 2005

Replies: 2

Views: 5K

How Does the Double Slit Experiment Reveal Photon Behavior and Probabilities?

Apr 17, 2005 · Replies 4 · Apr 21, 2005

Replies: 4

Views: 3K

Very specific Q's on the P and H operators

Feb 14, 2005 · Replies 3 · Apr 21, 2005

Replies: 3

Views: 2K

Wave-Particle Duality: Questions Concerning Quantum Mechanics

Apr 18, 2005 · Replies 12 · Apr 20, 2005

Replies: 12

Views: 3K

QM Uncertainty: Uncovering Hidden Variables

Apr 10, 2005 · Replies 46 · Apr 20, 2005

2

Replies: 46

Views: 9K

Can Photons Transfer Only Part of Their Energy to Electrons?

Apr 19, 2005 · Replies 5 · Apr 19, 2005

Replies: 5

Views: 2K

How Does Quantum Measurement Relate to CNOT Gates and Bell's Theorem?

Apr 15, 2005 · Replies 23 · Apr 19, 2005

Replies: 23

Views: 5K

When the unitary evolution is derived from the collapse postulate in QM

Apr 19, 2005 · Replies 3 · Apr 19, 2005

Replies: 3

Views: 3K

Scintillator converts xray photons into visible photons

Apr 18, 2005 · Replies 7 · Apr 19, 2005

Replies: 7

Views: 4K

Need Clarification on Uncertainty

Apr 18, 2005 · Replies 6 · Apr 18, 2005

Replies: 6

Views: 2K

How come light photons penetrate these solutions easily

Apr 11, 2005 · Replies 2 · Apr 18, 2005

Replies: 2

Views: 2K

Is Quantum Redshift the Key to Understanding the Photoelectric Effect?

Apr 13, 2005 · Replies 5 · Apr 17, 2005

Replies: 5

Views: 3K

Electrons & Nucleus: Spinning & Value?

Apr 17, 2005 · Replies 3 · Apr 17, 2005

Replies: 3

Views: 3K

Leonard Little's Theory of Elementary Waves

Apr 17, 2005 · Replies 6 · Apr 17, 2005

Replies: 6

Views: 5K

What point is the entanglement lost

Apr 9, 2005 · Replies 2 · Apr 16, 2005

Replies: 2

Views: 2K

Can Electromagnetic Waves Travel as Photons?

Apr 14, 2005 · Replies 9 · Apr 16, 2005

Replies: 9

Views: 2K

Can Quantum Systems Transport Information Without Altering It?

Apr 15, 2005 · Replies 3 · Apr 16, 2005

Replies: 3

Views: 3K

Can Electromagnetic Waves Generate Voltage and Force?

Apr 15, 2005 · Replies 6 · Apr 16, 2005

Replies: 6

Views: 5K

The Mysterious 3:1 Proportionality in Quantum Mechanics and Genetics

Apr 7, 2005 · Replies 2 · Apr 16, 2005

Replies: 2

Views: 2K

Proving Real & Imaginary Parts of Complex Wavefunction

Feb 16, 2005 · Replies 41 · Apr 15, 2005

2

Replies: 41

Views: 14K

Tunneling Current in Barrier Tunneling: Cu & Al Polarity Reversal

Apr 14, 2005 · Replies 3 · Apr 15, 2005

Replies: 3

Views: 3K

Is Quantum Physics More Fun Than Dancing in the Street?

Apr 14, 2005 · Replies 15 · Apr 15, 2005

Replies: 15

Views: 2K

Teleportation-possible or not?

Mar 31, 2005 · Replies 7 · Apr 15, 2005

Replies: 7

Views: 3K

Exploring Planck's Constant & Temperature: Max Planck's Legacy

Apr 13, 2005 · Replies 6 · Apr 14, 2005

Replies: 6

Views: 3K

Finding Expectation Values & Expressing Eigenstates

Apr 12, 2005 · Replies 15 · Apr 14, 2005

Replies: 15

Views: 3K

What is the general form of the Lagrangian density for a scalar field?

Apr 14, 2005 · Replies 2 · Apr 14, 2005

Replies: 2

Views: 8K

Understanding QFT: 3 Common Questions Answered by Experts

Apr 13, 2005 · Replies 6 · Apr 14, 2005

Replies: 6

Views: 2K

Indistinguishability Of Particles

Apr 13, 2005 · Replies 5 · Apr 14, 2005

Replies: 5

Views: 3K

What is QM? Learn About It Now

Apr 11, 2005 · Replies 3 · Apr 13, 2005

Replies: 3

Views: 2K

Measure in grover's alg and shift phase

Apr 6, 2005 · Replies 1 · Apr 13, 2005

Replies: 1

Views: 2K

Pauli Exclusion Principle, what does it say?

Apr 13, 2005 · Replies 3 · Apr 13, 2005

Replies: 3

Views: 5K

Hydrogen orbitals/Pauli Principle

Apr 12, 2005 · Replies 12 · Apr 13, 2005

Replies: 12

Views: 3K

Is Quantum Mechanics Scale Invariant?

Apr 6, 2005 · Replies 12 · Apr 12, 2005

Replies: 12

Views: 4K

Is Energy Created or Has It Always Existed in the Universe?

Apr 9, 2005 · Replies 5 · Apr 12, 2005

Replies: 5

Views: 2K

So, say the Fine Structure Constant is not a Constant

Apr 11, 2005 · Replies 9 · Apr 12, 2005

Replies: 9

Views: 3K

What is the concept of electron probability wave in quantum mechanics?

Mar 31, 2005 · Replies 5 · Apr 12, 2005

Replies: 5

Views: 10K

Is Quantum Reality Truly Uncertain or Just a Misunderstanding?

Apr 9, 2005 · Replies 27 · Apr 12, 2005

Replies: 27

Views: 4K

Advanced and retarded Green's function

Apr 10, 2005 · Replies 10 · Apr 11, 2005

Replies: 10

Views: 10K

Impossible to predict where a particle will be

Apr 6, 2005 · Replies 11 · Apr 11, 2005

Replies: 11

Views: 4K

What Advanced Mathematics is Essential for Understanding Quantum Mechanics?

Apr 3, 2005 · Replies 9 · Apr 11, 2005

Replies: 9

Views: 3K

Fermi Interaction of Electrons with Nuclei

Apr 9, 2005 · Replies 6 · Apr 10, 2005

Replies: 6

Views: 7K

The concept of Rotation in 3-d in QM

Apr 7, 2005 · Replies 6 · Apr 10, 2005

Replies: 6

Views: 3K

Simultaneous measurement on 1 photon

Apr 3, 2005 · Replies 18 · Apr 9, 2005

Replies: 18

Views: 3K

Questions About Quantum Theory: What's Wrong?

Mar 22, 2005 · Replies 209 · Apr 8, 2005

7

Replies: 209

Views: 28K

Interference in time using double slit

Mar 31, 2005 · Replies 1 · Apr 8, 2005

Replies: 1

Views: 2K

ARRGH Particle Wavefunction Questions

Apr 6, 2005 · Replies 7 · Apr 7, 2005

Replies: 7

Views: 3K

Yang-Mills with light-cone coordinates

Mar 30, 2005 · Replies 2 · Apr 6, 2005

Replies: 2

Views: 3K

EM Radiation Q: Hydrogen Atom Transitions & Frequency

Apr 4, 2005 · Replies 14 · Apr 6, 2005

Replies: 14

Views: 2K

Easy piece about Non commutative geometry ?

Mar 29, 2005 · Replies 2 · Apr 5, 2005

Replies: 2

Views: 2K

Delayed quantum eraser with double slit

Apr 1, 2005 · Replies 2 · Apr 5, 2005

Replies: 2

Views: 3K

Find special double slit experiment

Mar 23, 2005 · Replies 8 · Apr 5, 2005

Replies: 8

Views: 2K

Could the brain be a quantum computer already?

Apr 3, 2005 · Replies 9 · Apr 4, 2005

Replies: 9

Views: 4K

Another inference/detection question

Apr 3, 2005 · Replies 9 · Apr 4, 2005

Replies: 9

Views: 2K

Atom Composition: Boson or Fermion?

Apr 2, 2005 · Replies 4 · Apr 4, 2005

Replies: 4

Views: 3K

Classical and Quantum probabilities

Mar 23, 2005 · Replies 30 · Apr 4, 2005

2

Replies: 30

Views: 6K

Dynamical Quantization: A Non-Lagrangian Approach - Explained and Explored

Mar 26, 2005 · Replies 2 · Apr 2, 2005

Replies: 2

Views: 3K

Quantum Physics / Quantum Mechanics

Mar 31, 2005 · Replies 3 · Apr 1, 2005

Replies: 3

Views: 5K

Simulating spin flips in a quantum measurmenet scheme

Mar 30, 2005 · Replies 2 · Mar 31, 2005

Replies: 2

Views: 2K

Can Dimension and Time be quantized?

Mar 26, 2005 · Replies 14 · Mar 31, 2005

Replies: 14

Views: 3K

Quantum Numbers & Electron Energy

Mar 31, 2005 · Replies 6 · Mar 31, 2005

Replies: 6

Views: 3K

Double slit experiment IN TIME

Mar 3, 2005 · Replies 3 · Mar 31, 2005

Replies: 3

Views: 3K

Predicting Energy Quantization in CM Systems

Mar 23, 2005 · Replies 2 · Mar 31, 2005

Replies: 2

Views: 5K

Particle / Anti-particle Annihilations

Mar 23, 2005 · Replies 2 · Mar 30, 2005

Replies: 2

Views: 3K

Quantum Tunneling Thermoelectric Patents?

Mar 4, 2005 · Replies 2 · Mar 29, 2005

Replies: 2

Views: 2K

Field Theory - bending of light due to

Mar 29, 2005 · Replies 2 · Mar 29, 2005

Replies: 2

Views: 2K

Force carriers / standard model

Mar 24, 2005 · Replies 9 · Mar 29, 2005

Replies: 9

Views: 3K

A question about the adding of potential in Schrodinger equation

Mar 22, 2005 · Replies 2 · Mar 29, 2005

Replies: 2

Views: 2K

What is the definition of log(P) in the von neumann entropy formula?

Mar 29, 2005 · Replies 3 · Mar 29, 2005

Replies: 3

Views: 4K

Quantum Equation: Baseball Player & Spaceship Speed

Mar 28, 2005 · Replies 2 · Mar 29, 2005

Replies: 2

Views: 2K

Understanding CP-Violation in Physics

Mar 27, 2005 · Replies 6 · Mar 29, 2005

Replies: 6

Views: 3K

Universe Quantum Mechanics: Different Electron Configurations & Noble Gases?

Mar 28, 2005 · Replies 2 · Mar 28, 2005

Replies: 2

Views: 1K

What is the Green inverse function for a given propagator?

Mar 18, 2005 · Replies 6 · Mar 27, 2005

Replies: 6

Views: 2K

Particles connected to Antiparticles

Mar 24, 2005 · Replies 19 · Mar 27, 2005

Replies: 19

Views: 4K

Understanding the Rotation Group in Quantum Mechanics: A Comprehensive Guide

Mar 26, 2005 · Replies 4 · Mar 27, 2005

Replies: 4

Views: 3K

Questions about Delayed-Choice Quantum Eraser

Mar 5, 2004 · Replies 8 · Mar 26, 2005

Replies: 8

Views: 5K

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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