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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.

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Quantum Interpretations and Foundations

Carroll interviews Barandes on Indivisible Stochastic QM

1.3K threadsYesterday, 10:28 PM

Undergrad Carroll interviews Barandes on Indivisible Stochastic QM

Yesterday, 10:28 PM

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Graduate Can Traditional Collision Problems Be Solved Using Quantum Mechanics?

jfy4
May 10, 2011 · Replies 5 · May 12, 2011

Replies: 5

Graduate Infinite gravity and time on the uncertainty principle

vespera
May 11, 2011 · Replies 2 · May 12, 2011

Replies: 2

Graduate Can someone explain HUP with some mathematical rigor?

SeventhSigma
May 10, 2011 · Replies 22 · May 11, 2011

Replies: 22

Graduate Can someone explain to me Locality in field theory?

alemsalem
May 11, 2011 · Replies 1 · May 11, 2011

Replies: 1

Graduate Vile spinors in odd dimensions?

vertices
May 11, 2011 · Replies 1 · May 11, 2011

Replies: 1

Graduate How do they measure the mass of the electron in units of MeV/c*c ?

what_are_electrons
Aug 30, 2004 · Replies 6 · May 11, 2011

Replies: 6

Graduate Why are quantum fluctuations amplified when viewed on a smaller scale?

Mukilab
May 10, 2011 · Replies 5 · May 11, 2011

Replies: 5

Graduate Problems about uncertainty principle

athrun200
May 10, 2011 · Replies 14 · May 11, 2011

Replies: 14

Graduate Relationship between Imaginary Time Green's function and Average Occupancy

a2009
May 9, 2011 · Replies 3 · May 11, 2011

Replies: 3

Undergrad Why is the cube of a unitary operator = identity matrix?

km707
May 11, 2011 · Replies 3 · May 11, 2011

Replies: 3

Graduate Transition from bound states to continuous states

giova7_89
May 9, 2011 · Replies 4 · May 11, 2011

Replies: 4

Graduate Feynman's QED and photon reflection

nhmllr
May 9, 2011 · Replies 5 · May 11, 2011

Replies: 5

Undergrad Double-Slit Experiment & Wave Interference

StevieTNZ
May 8, 2011 · Replies 7 · May 11, 2011

Replies: 7

Graduate What Makes Photons Unique Compared to Matter Waves?

Varon
May 7, 2011 · Replies 12 · May 10, 2011

Replies: 12

Graduate Reversibility on Microscopic Level

StevieTNZ
Apr 7, 2011 · Replies 7 · May 10, 2011

Replies: 7

Graduate Demystifying Photons and Polarizers: Understanding Interaction and Measurement

cragar
May 10, 2011 · Replies 3 · May 10, 2011

Replies: 3

Graduate Difference between Hamiltonian operator and Total energy operator?

annms
May 10, 2011 · Replies 4 · May 10, 2011

Replies: 4

Graduate Understanding the Randomness of Quantum Processes and the Arrow of Time

ejproducts
May 4, 2011 · Replies 9 · May 10, 2011

Replies: 9

Graduate Quantizable nature of the physical world

Kherubin
May 4, 2011 · Replies 11 · May 10, 2011

Replies: 11

Graduate Hacking Quantum Unbreakable Randomness Scrambler

Varon
May 9, 2011 · Replies 4 · May 10, 2011

Replies: 4

Graduate Classical Bell Test | Hans de Vries | Physics-Quest.org

cosmik debris
May 9, 2011 · Replies 2 · May 9, 2011

Replies: 2

Graduate Discrete/Continuous: Two sides of the same coin?

Kherubin
May 5, 2011 · Replies 5 · May 9, 2011

Replies: 5

Graduate Relativistic E/p relations in the WKB Approximation

FunkyDwarf
May 9, 2011 · Replies 1 · May 9, 2011

Replies: 1

Graduate Does spin change under Lorentz boosts?

QuantumCosmo
May 8, 2011 · Replies 2 · May 9, 2011

Replies: 2

Graduate I don't get this Path Integral stuff

nhmllr
May 5, 2011 · Replies 10 · May 9, 2011

Replies: 10

Graduate The logic of a physical system

Fredrik
May 8, 2011 · Replies 1 · May 9, 2011

Replies: 1

Graduate Doubt regarding uncertainty principle

jobsism
Feb 14, 2011 · Replies 22 · May 9, 2011

Replies: 22

Graduate Is the EPR Thought Experiment Misinterpreted in Contemporary Versions?

Varon
May 9, 2011 · Replies 1 · May 9, 2011

Replies: 1

Graduate QM: Spin States of Electrons & Positrons

cragar
May 5, 2011 · Replies 12 · May 9, 2011

Replies: 12

Graduate What parameters of SM can be changed gradually?

Dmitry67
May 5, 2011 · Replies 5 · May 8, 2011

Replies: 5

Graduate Matrix Mechanics & Wave Mechanics

Varon
May 6, 2011 · Replies 7 · May 8, 2011

Replies: 7

Graduate Macro vs QM: Can Bubble Chambers Challenge the Uncertainty Principle?

LAncienne
Nov 26, 2009 · Replies 10 · May 8, 2011

Replies: 10

High School What keeps the electron from falling into the nucleus?

Tregg Smith
May 8, 2011 · Replies 1 · May 8, 2011

Replies: 1

Graduate Freezing Light: Exploring the Equilibrium of Mass and Energy in Photons

paul turbine
May 6, 2011 · Replies 6 · May 7, 2011

Replies: 6

Undergrad Does a Hidden Detector Affect the Double-Slit Experiment?

PositiveGoo
Apr 28, 2011 · Replies 21 · May 7, 2011

Replies: 21

Graduate Can Time Travel Really Avoid Violating Causality?

byron178
Apr 5, 2011 · Replies 61 · May 7, 2011

3

Replies: 61

Graduate Fermi's Golden Rule: Derivation with Discrete & Continuous Spectrum

giova7_89
May 7, 2011 · Replies 3 · May 7, 2011

Replies: 3

Graduate Electron-hole overlap integral for a quantum well

skyboarder2
May 7, 2011 · Replies 1 · May 7, 2011

Replies: 1

Graduate Why some functional integral(in QTF theo)of a product equal product of two the integr

ndung200790
May 6, 2011 · Replies 2 · May 7, 2011

Replies: 2

Graduate Hermitian Operators: Finding Psi(p) from Psi(x)

khemist
May 5, 2011 · Replies 5 · May 7, 2011

Replies: 5

Graduate What really is a Wave Function?

Varon
May 5, 2011 · Replies 5 · May 6, 2011

Replies: 5

Graduate Time-Dependent Perturbations in Schrodinger Equation

Gear300
Apr 25, 2011 · Replies 11 · May 6, 2011

Replies: 11

Graduate Explanation of double slit experiment.

jcsubmit
May 6, 2011 · Replies 2 · May 6, 2011

Replies: 2

Graduate Double-Slit Experiment: Wave or Particle?

Planck1900
May 6, 2011 · Replies 11 · May 6, 2011

Replies: 11

Graduate Why does |s=1,m=1> equal |++> ?

Ethan0718
May 6, 2011 · Replies 3 · May 6, 2011

Replies: 3

Graduate Is a Reverse Quantum Computer Possible?

ChrisWilson68
Apr 26, 2011 · Replies 6 · May 6, 2011

Replies: 6

Undergrad Finding Wavevector in 2D Domain

Crot
May 5, 2011 · Replies 2 · May 6, 2011

Replies: 2

Graduate Can macro quantum entanglement make teleportation possible? i had a

ASD16
May 2, 2011 · Replies 7 · May 6, 2011

Replies: 7

Graduate What causes deviations between Sun and blackbody?

Sybren
May 3, 2011 · Replies 7 · May 5, 2011

Replies: 7

Graduate Right handed or left handed,intrinsic?

ShayanJ
May 3, 2011 · Replies 10 · May 5, 2011

Replies: 10

Undergrad Scattering Techniques: Types & Applications

no86
May 4, 2011 · Replies 2 · May 5, 2011

Replies: 2

Graduate Wave functions and probability densities

jaredogden
May 4, 2011 · Replies 4 · May 5, 2011

Replies: 4

Graduate Polarizations of vector/tensor fields

michael879
May 4, 2011 · Replies 1 · May 5, 2011

Replies: 1

Graduate Experimental Test Limits Predictive Power Beyond Quantum Theory

DrChinese
May 3, 2011 · Replies 11 · May 5, 2011

Replies: 11

Graduate What is the meaning of classical and quantum equations?

ndung200790
May 4, 2011 · Replies 9 · May 5, 2011

Replies: 9

Graduate Position doesn't exist prior to measurement?

Varon
May 4, 2011 · Replies 6 · May 5, 2011

Replies: 6

Graduate Fine structure, exact formula. Dirac.

andrewr
Apr 12, 2011 · Replies 11 · May 4, 2011

Replies: 11

Graduate Macroscopic Quantum Coherence & Macrorealism experiments

StevieTNZ
Dec 1, 2010 · Replies 14 · May 4, 2011

Replies: 14

Graduate Are More Complicated Lagrangians Wrong ?

maverick_starstrider
Mar 3, 2011 · Replies 24 · May 4, 2011

Replies: 24

Undergrad Quantum Breakdown: Explained w/ Basic Math & Analogies

Pjpic
Apr 23, 2011 · Replies 5 · May 4, 2011

Replies: 5

Graduate What is the secret behind the double slit experiment and how has it been solved?

Varon
May 3, 2011 · Replies 8 · May 3, 2011

Replies: 8

Graduate Oscillation time in wave function?

Varon
May 3, 2011 · Replies 2 · May 3, 2011

Replies: 2

Graduate Quantum Physics United with non quantum Physics

evanallmighty
May 3, 2011 · Replies 3 · May 3, 2011

Replies: 3

Graduate Do we need a coincidence counter (for correlation) in delayed erasure?

San K
May 2, 2011 · Replies 44 · May 3, 2011

2

Replies: 44

Graduate Covariant Uncertaintly Principle

jfy4
Apr 28, 2011 · Replies 13 · May 3, 2011

Replies: 13

Graduate Eigenvalue of x^4 Potential: A Mystery Explored

dingo_d
Apr 17, 2011 · Replies 10 · May 3, 2011

Replies: 10

Undergrad Is Superposition Similar to Tossing a Coin?

ƒ(x)
May 2, 2011 · Replies 4 · May 3, 2011

Replies: 4

Graduate What exists in quantum mechanics when we don’t observe?

computerphys
May 2, 2011 · Replies 7 · May 3, 2011

Replies: 7

Graduate Laser light interference on liquid metal. why?

bizzder
May 1, 2011 · Replies 4 · May 3, 2011

Replies: 4

Graduate Wave Length of Photon: How Many Wavelengths Does It Contain?

ValenceE
May 2, 2011 · Replies 1 · May 3, 2011

Replies: 1

Graduate Faster Light: Casimir Vacuum & Quantum Tunnelling

Dmitry67
May 1, 2011 · Replies 6 · May 3, 2011

Replies: 6

Graduate Elementary particles,0-Dimensional?

ShayanJ
Apr 27, 2011 · Replies 12 · May 3, 2011

Replies: 12

Graduate Locality & Determinism beneath the quantum surface?

Fyzix
May 2, 2011 · Replies 6 · May 3, 2011

Replies: 6

Graduate Understanding Interference in Quantum Ray States

Varon
Apr 29, 2011 · Replies 14 · May 2, 2011

Replies: 14

Graduate Dynamics in a Quantum Superposition

Varon
May 2, 2011 · Replies 1 · May 2, 2011

Replies: 1

Graduate When we want to show quantum behavior (like tunneling or double slit)

Lapidus
Apr 30, 2011 · Replies 3 · May 2, 2011

Replies: 3

Graduate Questions on a revised Afshar Experiment

StevieTNZ
May 2, 2011 · Replies 2 · May 2, 2011

Replies: 2

Graduate Newbie Q on quantum entanglement

ObbtiGime
May 2, 2011 · Replies 20 · May 2, 2011

Replies: 20

Undergrad What is a single particle state?

quietrain
May 1, 2011 · Replies 8 · May 2, 2011

Replies: 8

Graduate Position expectation value in harmonic oscillator

Trajito
Apr 29, 2011 · Replies 10 · May 2, 2011

Replies: 10

Graduate Sum over histories, including histories that violate conservation laws?

bcrowell
Apr 28, 2011 · Replies 16 · May 2, 2011

Replies: 16

Graduate QFT vs. Relativistic quantum mechanics

Schreiberdk
Apr 26, 2011 · Replies 23 · May 2, 2011

Replies: 23

Graduate Confusion over compatible measurements

elemental09
Apr 24, 2011 · Replies 9 · May 2, 2011

Replies: 9

Graduate Unraveling the Mystery of Gravity's Non-Renormalizability

ASD16
Apr 30, 2011 · Replies 2 · May 2, 2011

Replies: 2

Graduate Is this a Violation of the Law of Conservation?

Nano-Passion
Apr 22, 2011 · Replies 9 · May 1, 2011

Replies: 9

Graduate Solving Indices Problem in QFT

anony
May 1, 2011 · Replies 2 · May 1, 2011

Replies: 2

Graduate How Does the Hartree Model Account for the Pauli Exclusion Principle?

Auwings2006
Apr 18, 2008 · Replies 5 · May 1, 2011

Replies: 5

Graduate What is the External Field Approximation in Quantum Mechanics?

Miquelyn10
Apr 27, 2011 · Replies 4 · Apr 30, 2011

Replies: 4

A good video on the history of quantum physics

Forestman
Mar 9, 2011 · Replies 3 · Apr 30, 2011

Replies: 3

Graduate Energy Dependence of Scattering Phase Shifts

FunkyDwarf
Apr 30, 2011 · Replies 1 · Apr 30, 2011

Replies: 1

Graduate Is scientific knowledge ultimately limited

himanshu2004@
Apr 29, 2011 · Replies 9 · Apr 30, 2011

Replies: 9

Undergrad Can we directly measure something without changing it?

KingNothing
Apr 29, 2011 · Replies 5 · Apr 30, 2011

Replies: 5

Undergrad Basic question regarding point of view

ketamynx
Apr 29, 2011 · Replies 2 · Apr 29, 2011

Replies: 2

High School Double Slit Experiment: Red Laser vs Green Laser

dalcde
Apr 27, 2011 · Replies 2 · Apr 29, 2011

Replies: 2

Graduate The range of (psi) squared is ?

peeyush_ali
Apr 28, 2011 · Replies 7 · Apr 29, 2011

Replies: 7

Graduate Virtual Particles And Hidden Dimensions

mjacobsca
Apr 27, 2011 · Replies 4 · Apr 29, 2011

Replies: 4

Graduate Do Lagrangian and hidden symm broken Lagr describe the same physics?

ndung200790
Apr 29, 2011 · Replies 3 · Apr 29, 2011

Replies: 3

Graduate Fatal error in computer simulation (photoelectric)

worlov
Apr 23, 2011 · Replies 11 · Apr 29, 2011

Replies: 11

Graduate Hilbert Spaces And Quantum Mechanics

schumi1991`
Apr 22, 2011 · Replies 13 · Apr 29, 2011

Replies: 13

Graduate Energy operator in curved space-time

jfy4
Apr 27, 2011 · Replies 7 · Apr 29, 2011

Replies: 7

sidebar

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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