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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

Particle vs Wave Interpretations of QM

1.3K threads23 minutes ago

Undergrad Particle vs Wave Interpretations of QM

23 minutes ago

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Graduate Schrodingers equation for the hydrogen atom.

lavster
Nov 21, 2009 · Replies 2 · Nov 21, 2009

Replies: 2

Graduate History of the Taylor-Phipps version of the Stern-Gerlach experiment

transience
Nov 20, 2009 · Replies 2 · Nov 21, 2009

Replies: 2

Graduate Symmetric and Anti-Symmetric Wavefunctions

Ed Quanta
Apr 11, 2005 · Replies 28 · Nov 19, 2009

Replies: 28

High School Beginners guide to Quantam Mechanics?

Emc²
Nov 17, 2009 · Replies 15 · Nov 19, 2009

Replies: 15

Graduate How can objects have wavelengths?

engi2013
Nov 18, 2009 · Replies 9 · Nov 19, 2009

Replies: 9

Graduate Detection of a non-interacting particle

DrFaustus
Nov 19, 2009 · Replies 9 · Nov 19, 2009

Replies: 9

Graduate Bloch sphere model for many spins?

Gerenuk
Nov 19, 2009 · Replies 1 · Nov 19, 2009

Replies: 1

Graduate Quantum Economies: Phyisical Modeling of Economic Systems

ninar
Nov 16, 2009 · Replies 6 · Nov 19, 2009

Replies: 6

Graduate Alain Aspect's Experiment: Investigating Non-locality and Entangled Photons

Neo_Anderson
Nov 17, 2009 · Replies 20 · Nov 19, 2009

Replies: 20

Graduate Wave function collapse and the statistical nature of quantum states

LAncienne
Nov 15, 2009 · Replies 26 · Nov 18, 2009

Replies: 26

Graduate Entanglement in scattering processes

limarodessa
Nov 18, 2009 · Replies 5 · Nov 18, 2009

Replies: 5

Graduate Charmonium Mass Estimation: Trial Wavefunction for Variational Method

starbud27
Nov 16, 2009 · Replies 3 · Nov 18, 2009

Replies: 3

Graduate Quantum Field Theory and Mereological Nihilism/Atomism

kote
Nov 18, 2009 · Replies 1 · Nov 18, 2009

Replies: 1

Graduate How do fields change if there's no void

Pjpic
Nov 13, 2009 · Replies 8 · Nov 17, 2009

Replies: 8

Graduate Dual slit experiment: closing/opening a slit after the particle passes it. .

Valenciennes
Nov 17, 2009 · Replies 1 · Nov 17, 2009

Replies: 1

Graduate Proving Identity of S12^2 in Two Particle System

evilcman
Nov 17, 2009 · Replies 1 · Nov 17, 2009

Replies: 1

Graduate Are physicists happy with Quantum Mechanics as it is?

stevefaulkner
Nov 14, 2009 · Replies 40 · Nov 17, 2009

2

Replies: 40

Graduate Quick question on the EPR paper

Neo_Anderson
Nov 15, 2009 · Replies 3 · Nov 17, 2009

Replies: 3

Graduate Atomic Components and the Absorption of Photons

daisey
Sep 17, 2009 · Replies 8 · Nov 16, 2009

Replies: 8

Graduate How can something be massless?

VelociBlade
Jan 7, 2009 · Replies 50 · Nov 16, 2009

2

Replies: 50

Graduate What is the Relationship Between Vacuum Energy and Fluctuations?

Haroon1
Oct 5, 2009 · Replies 23 · Nov 16, 2009

Replies: 23

Undergrad Understanding the Relationship between Variables in a Wave Equation

bluestar
Nov 7, 2009 · Replies 5 · Nov 15, 2009

Replies: 5

Graduate Double-Slit Experiment: Does Interference Pattern Change?

shakespeare86
Nov 15, 2009 · Replies 7 · Nov 15, 2009

Replies: 7

Graduate Calc Feynman Amp Q: Chi+ Chi- -> Chi+ Chi-

div curl F= 0
Nov 15, 2009 · Replies 1 · Nov 15, 2009

Replies: 1

Graduate Is Causality in Quantum Mechanics as Clear-Cut as in Classical Mechanics?

Galactor
Nov 9, 2009 · Replies 64 · Nov 15, 2009

3

Replies: 64

Undergrad Relationship Between Energy and Wavelength

pzona
Nov 14, 2009 · Replies 1 · Nov 14, 2009

Replies: 1

Graduate The Born Von Karman Boundary Conditions

Llewlyn
Jul 25, 2007 · Replies 4 · Nov 14, 2009

Replies: 4

Graduate The Quantum Phenomenon and the Staring Phenomenon

SDetection
Nov 12, 2009 · Replies 13 · Nov 14, 2009

Replies: 13

Graduate Bra/Ket Notation: Learn Basics & Find Eigenvalues

The thinker
Nov 14, 2009 · Replies 1 · Nov 14, 2009

Replies: 1

Graduate How can the Planck length be claimed to be the smallest length?

JohnMS
May 6, 2008 · Replies 47 · Nov 14, 2009

2

Replies: 47

Graduate Integrable Quantum Field Theory

wam_mi
Nov 12, 2009 · Replies 1 · Nov 13, 2009

Replies: 1

Graduate Why does the electromagnetic field adjust when a charged field changes phase?

thehangedman
Nov 13, 2009 · Replies 3 · Nov 13, 2009

Replies: 3

Graduate No entropy/environment = no time flow?

dmtr
Nov 2, 2009 · Replies 33 · Nov 13, 2009

2

Replies: 33

Graduate Where Can I Find Resources for Understanding Stern-Gerlach Experiment Math?

phil ess
Nov 13, 2009 · Replies 2 · Nov 13, 2009

Replies: 2

Graduate Integrable Quantum Field Theory

wam_mi
Nov 13, 2009 · Replies 1 · Nov 13, 2009

Replies: 1

Graduate Schrodinger Equation Explained - Get the Answer Now

Mech-Master
Nov 13, 2009 · Replies 5 · Nov 13, 2009

Replies: 5

Undergrad Understanding Decoherence: Simplifying a Complex Concept in Quantum Mechanics

Loren Booda
Nov 12, 2009 · Replies 1 · Nov 13, 2009

Replies: 1

Graduate Why is the Hilbertspace complex?

Sponti
Nov 6, 2009 · Replies 16 · Nov 13, 2009

Replies: 16

Graduate Can someone give me a geometrical description of the math in QM?

superpaul3000
Nov 12, 2009 · Replies 5 · Nov 13, 2009

Replies: 5

Graduate Ladder operators, a technical question

actachyon
Nov 12, 2009 · Replies 1 · Nov 12, 2009

Replies: 1

Graduate QCD Meson Potential: Physics Community Agreement?

BigD
Oct 31, 2009 · Replies 3 · Nov 12, 2009

Replies: 3

Graduate Do gravitons spiral around a monopole?

stealth666
Nov 5, 2009 · Replies 10 · Nov 11, 2009

Replies: 10

Graduate Particles as representations of groups

tulip
Nov 6, 2009 · Replies 12 · Nov 11, 2009

Replies: 12

Graduate Particle Trajectory & Velocity in Bubble Chamber vs HUP

eoghan
Nov 11, 2009 · Replies 7 · Nov 11, 2009

Replies: 7

Graduate Bizzard measurement outcome of Angular Momentum, Why?

wam_mi
Nov 11, 2009 · Replies 1 · Nov 11, 2009

Replies: 1

Undergrad Looking for a More Practical Quantum Mechanics Book?

MattLiverpool
Nov 10, 2009 · Replies 5 · Nov 11, 2009

Replies: 5

Graduate Is it true photons will not produce an interference pattern in a vacuum?

CosmicVoyager
Nov 11, 2009 · Replies 1 · Nov 11, 2009

Replies: 1

Graduate Matter waves are oscillations in what medium?

CosmicVoyager
Nov 8, 2009 · Replies 25 · Nov 10, 2009

Replies: 25

Undergrad Time for photon to reach the furthest point of diffraction?

SorcererXIII
Oct 19, 2009 · Replies 3 · Nov 10, 2009

Replies: 3

Graduate Are Finite Well Bound States Enough for a Complete Basis in Quantum Mechanics?

lttung
Nov 10, 2009 · Replies 1 · Nov 10, 2009

Replies: 1

Graduate Interacting theory lives in a different Hilbert space [ ]

strangerep
Oct 25, 2009 · Replies 77 · Nov 10, 2009

3

Replies: 77

Graduate Is the Placement of Branch Cuts in ln(-s^2-iε) Physically Significant?

RedX
Nov 7, 2009 · Replies 2 · Nov 10, 2009

Replies: 2

Graduate Good Resources for Feynman's Path Integral

raisin_raisin
Nov 8, 2009 · Replies 2 · Nov 10, 2009

Replies: 2

Graduate Can photons affect each other's trajectories?

CosmicVoyager
Nov 9, 2009 · Replies 1 · Nov 10, 2009

Replies: 1

Graduate Clarifying Symmetry in Le Bellac's Quantum Physics

neelakash
Nov 9, 2009 · Replies 4 · Nov 9, 2009

Replies: 4

Undergrad Is the Photon's Energy Doubled in a Coherent Pair?

LitleBang
Nov 3, 2009 · Replies 20 · Nov 9, 2009

Replies: 20

Graduate Can the SR Concept of Reference Frames be Applied to Quantum Mechanics?

LarryS
Oct 31, 2009 · Replies 10 · Nov 9, 2009

Replies: 10

Graduate Why the rank of an irreducible tensor must be an integer?

wdlang
Nov 8, 2009 · Replies 1 · Nov 9, 2009

Replies: 1

Undergrad How Does the Wavefunction Differ for Photons Compared to Electrons?

gabrielh
Nov 5, 2009 · Replies 8 · Nov 8, 2009

Replies: 8

Graduate Discover the Basics of Conformal Field Theory: An Introduction for Beginners

wam_mi
Nov 8, 2009 · Replies 2 · Nov 8, 2009

Replies: 2

Graduate Connection between Dyson's equation and Heisenberg equation of motion

Tanja
Jan 15, 2008 · Replies 7 · Nov 8, 2009

Replies: 7

Graduate What does space quantization of angular momentum actually signify?

I_am_learning
Nov 7, 2009 · Replies 5 · Nov 8, 2009

Replies: 5

Graduate Kochen-Specker for two particles

Gerenuk
Nov 8, 2009 · Replies 1 · Nov 8, 2009

Replies: 1

Graduate Incertitude relations from QFT

TeTeC
Nov 8, 2009 · Replies 1 · Nov 8, 2009

Replies: 1

Graduate When do the laws of general relativity breakdown?

joebloggs
Nov 6, 2009 · Replies 5 · Nov 7, 2009

Replies: 5

Graduate Wave Particle Duality: Diffracting Particles Explained

qazxsw11111
Nov 4, 2009 · Replies 4 · Nov 7, 2009

Replies: 4

Graduate Quantum gases. The ideal Fermi gas

Petar Mali
Nov 7, 2009 · Replies 1 · Nov 7, 2009

Replies: 1

Graduate Parity and Time Reversal symmetries.

MathematicalPhysicist
Nov 5, 2009 · Replies 5 · Nov 7, 2009

Replies: 5

Graduate A Realtively General Question for you Quantum Physicists

USB73
Nov 4, 2009 · Replies 31 · Nov 7, 2009

2

Replies: 31

Graduate Is a double/single slit experiment possible in a gas chamber?

Vdtta
Nov 1, 2009 · Replies 25 · Nov 6, 2009

Replies: 25

Graduate Causality and the Role of Propagator in Quantum Field Theory

wam_mi
Nov 6, 2009 · Replies 5 · Nov 6, 2009

Replies: 5

Graduate Is the Planck mass the smallest possible unit of matter?

Archosaur
Nov 5, 2009 · Replies 2 · Nov 5, 2009

Replies: 2

Graduate Testing if the momentum operator is Hermitian

kkan2243
Sep 8, 2008 · Replies 4 · Nov 5, 2009

Replies: 4

Graduate Stark-broadening and plasma polarization

Jonny_trigonometry
Nov 2, 2005 · Replies 1 · Nov 5, 2009

Replies: 1

Graduate Functional diffential-integral equations

friend
Nov 2, 2009 · Replies 5 · Nov 5, 2009

Replies: 5

Undergrad 2 Questions on superpostion (Double slit experiment)

Thevanquished
Nov 1, 2009 · Replies 13 · Nov 4, 2009

Replies: 13

Graduate Quantum Tunneling: Observed properties of the particle within the barrier.

Repainted
Nov 4, 2009 · Replies 1 · Nov 4, 2009

Replies: 1

Graduate Decoherence: Random System-Environment Interaction Explained

chafelix
Nov 2, 2009 · Replies 6 · Nov 4, 2009

Replies: 6

Graduate Is the S-matrix Consistent with Time Dependent Hamiltonian?

Petar Mali
Nov 4, 2009 · Replies 1 · Nov 4, 2009

Replies: 1

Graduate Is the determinant of a mixed state density matrix always positive?

Fredrik
Nov 2, 2009 · Replies 5 · Nov 4, 2009

Replies: 5

Graduate Why is the transition from 3P1 to 3S1 in Helium forbidden?

Chaosmarch
Oct 31, 2009 · Replies 3 · Nov 3, 2009

Replies: 3

Graduate Standard Model Lagrange Density, 2D vectors, Lattice Theory.

Spinnor
Oct 23, 2009 · Replies 3 · Nov 3, 2009

Replies: 3

Graduate Understanding Quantum Qubits: Up, Down, and Beyond

Alexandr
Nov 2, 2009 · Replies 1 · Nov 3, 2009

Replies: 1

Graduate Relativistic corrections to CHSH vs. Preferred frame

DrChinese
Oct 29, 2009 · Replies 3 · Nov 3, 2009

Replies: 3

Graduate Can the Quantum Zeno Effect be solely attributed to decoherence?

imiyakawa
Nov 2, 2009 · Replies 5 · Nov 3, 2009

Replies: 5

Graduate Is it Possible to Measure Q or P Without Determining x1 and x2 or p1 and p2?

clacker
Nov 2, 2009 · Replies 5 · Nov 2, 2009

Replies: 5

Graduate RD Thought Experement (wikiversity article)

dmtr
Oct 26, 2009 · Replies 2 · Nov 2, 2009

Replies: 2

Undergrad What is the meaning of En^+ or En^-

devoured_elysium
Nov 2, 2009 · Replies 4 · Nov 2, 2009

Replies: 4

Graduate A seeming contrdiction in deriving wave function for delta function potential

kof9595995
Nov 2, 2009 · Replies 2 · Nov 2, 2009

Replies: 2

Graduate Continuity equation for Schrodinger equation with minimal coupling

nembokid
Nov 2, 2009 · Replies 5 · Nov 2, 2009

Replies: 5

Graduate Could the cosmic quantum eraser be used for FTL communication?

A-wal
Nov 1, 2009 · Replies 8 · Nov 2, 2009

Replies: 8

Graduate Density values for e-, p+ and n

delplace
Nov 1, 2009 · Replies 1 · Nov 2, 2009

Replies: 1

Graduate What is the General Form of Solutions for the Schrodinger Wave Equation?

pzona
Nov 1, 2009 · Replies 2 · Nov 2, 2009

Replies: 2

Graduate Does the wavefunction have a zero value anywhere?

imiyakawa
Nov 2, 2009 · Replies 6 · Nov 2, 2009

Replies: 6

Graduate Trying to learn the uncertainty principle

mjc456
Nov 1, 2009 · Replies 2 · Nov 2, 2009

Replies: 2

Graduate Questions for 1-D harmonic oscillators

ray.deng83
Nov 1, 2009 · Replies 3 · Nov 1, 2009

Replies: 3

Graduate Density of a subatomic particle

texasratt
Nov 1, 2009 · Replies 1 · Nov 1, 2009

Replies: 1

High School What is the difference between probability and probability density?

ray.deng83
Oct 31, 2009 · Replies 4 · Nov 1, 2009

Replies: 4

Undergrad Simple Energy Levels confusion

alexgmcm
Nov 1, 2009 · Replies 3 · Nov 1, 2009

Replies: 3

Graduate A relation between photon and electron - need discussion

bpm_vns19
Nov 1, 2009 · Replies 3 · Nov 1, 2009

Replies: 3

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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