Quantum Physics Forum

Post thread
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.

Sub-forums

Quantum Interpretations and Foundations

How valid is the indivisible interpretation of quantum mechanics?
1.3K threads
Graduate How valid is the indivisible interpretation of quantum mechanics?
Graduate Varying mass in Schrodinger Equation
  • hermitian
  • · Replies 1 ·
Replies
1
Graduate Is Quantum Measurement Uncertainty Due to Methods or the Act of Observation?
  • mechaxl
  • · Replies 9 ·
Replies
9
Graduate Ensuring Clean Quantum Measurements in the Stern-Gerlach Experiment
  • sokrates
  • · Replies 31 ·
2
Replies
31
Graduate Quantum corrections to force laws
  • RedX
  • · Replies 3 ·
Replies
3
Graduate Dirac Equation Derivation with Inhomogeneous Lorentz Group in QFT Book
  • nklohit
  • · Replies 4 ·
Replies
4
Graduate Alternate formulation of Dirac Notation
  • IttyBittyBit
  • · Replies 1 ·
Replies
1
Graduate Srednicki Path Integrals eq 6.22
  • maverick280857
  • · Replies 6 ·
Replies
6
Graduate What is the essence of quantization?
  • massless
  • · Replies 3 ·
Replies
3
Undergrad Bohr's Quantization of Angular Momentum
  • msavg
  • · Replies 2 ·
Replies
2
Graduate Quantum uncertainty on macroscopic scale
  • litewave
  • · Replies 2 ·
Replies
2
Undergrad Electron Transition: Why Doesn't Excited Electron Absorb Extra Photon?
  • alamdar
  • · Replies 4 ·
Replies
4
Graduate Understanding the Infinite Square Well Problem | Bound States & Eigenfunctions
  • quasar_4
  • · Replies 3 ·
Replies
3
Graduate Can Quantum Mechanics Explain the Paradox in Modified EPR Experiments?
  • zonde
  • · Replies 14 ·
Replies
14
High School How Does Light Become Polarized by Reflection?
  • Fadi A.Saif
  • · Replies 1 ·
Replies
1
Graduate Bundle of energy, but does it have mass?
  • myrhinobutt2
  • · Replies 1 ·
Replies
1
Graduate Dirac delta function is continuous and differential
  • astro2cosmos
  • · Replies 4 ·
Replies
4
High School Thomas Young's Double Slit Experiment
  • Cmertin
  • · Replies 5 ·
Replies
5
Graduate Momentum conservation in the photoelectric effect
  • SergioPL
  • · Replies 23 ·
Replies
23
Graduate About an (informal, discussion-oriented) Quantum Physics model
  • snnmbr
  • · Replies 2 ·
Replies
2
Graduate Why is linear algebra essential in understanding quantum mechanics?
  • luisgml_2000
  • · Replies 4 ·
Replies
4
Graduate Questions on Quantum Physics: Compton's Scattering & Dirac's Relativistic Energy
  • kof9595995
  • · Replies 6 ·
Replies
6
Graduate Quantum Measurements and Macroscopic Objects
  • Jimmy84
  • · Replies 7 ·
Replies
7
Graduate Nuclear magnetic resonance dipole dipole interaction
  • xfshi2000
  • · Replies 1 ·
Replies
1
Graduate Understanding the Wavefunction: Interpreting its Role in Quantum Mechanics
  • madness
  • · Replies 5 ·
Replies
5
Graduate Derived form of plancks distance
  • bpm_vns19
  • · Replies 1 ·
Replies
1
Graduate Pion Nucleon Scattering and Group Theory in Quantum Field Theory
  • Physiana
  • · Replies 2 ·
Replies
2
Graduate Wilson loops (srednicki eqn. 82.37)
  • RedX
  • · Replies 7 ·
Replies
7
Graduate Wick rotation is consistent with caculus?
  • PRB147
  • · Replies 5 ·
Replies
5
Graduate Having trouble understanding the wave function collapse.
  • elfmotat
  • · Replies 38 ·
2
Replies
38
Graduate How Does Bifurcation in Dynamical Systems Influence Information Generation?
  • Gargamel
  • · Replies 1 ·
Replies
1
Graduate If a system is made of 3 atoms with no degeneracy with energy levels
  • iontail
  • · Replies 4 ·
Replies
4
Graduate Solving the Measurement Problem: Imagine Yourself in a Room
  • hagopbul
  • · Replies 8 ·
Replies
8
Graduate Quantum Locality: Resolving QM and SR Compatible?
  • DrChinese
  • · Replies 3 ·
Replies
3
Graduate Reconstruction of potential V(x)
  • zetafunction
  • · Replies 1 ·
Replies
1
Graduate Self-Adjoint Operators and Reversible Logic gates
  • karatemonkey
  • · Replies 6 ·
Replies
6
Graduate About Feynman's 'QED:The strange theory of light and matter'
  • penguin007
  • · Replies 9 ·
Replies
9
Graduate Did Scientists Prove Current Measurements Change the Past?
  • Wangf
  • · Replies 8 ·
Replies
8
Graduate Understanding Unpolarized Current & Light
  • sokrates
  • · Replies 10 ·
Replies
10
Graduate I think I have good questions About superposition and splitting
  • Wangf
  • · Replies 19 ·
Replies
19
Graduate Negative energy photon emission
  • tickle_monste
  • · Replies 8 ·
Replies
8
Graduate How Can Degenerate Perturbation Theory Help Identify Zero Order Eigenstates?
  • hermitian
  • · Replies 5 ·
Replies
5
Graduate Quantum Superposition Explained - Is It Possible?
  • Greg_Jones
  • · Replies 1 ·
Replies
1
Graduate Reality, locality and determinacy.
  • alexepascual
  • · Replies 16 ·
Replies
16
Graduate What is the relationship between quantum bits and classical measurements?
  • Red_CCF
  • · Replies 27 ·
Replies
27
Graduate New Law of Physics Could Explain Quantum Mysteries
  • Baboon
  • · Replies 3 ·
Replies
3
Graduate Photons do not travel in straight lines
  • tickle_monste
  • · Replies 40 ·
2
Replies
40
Graduate Transition from QFT to Classical Physics using Path Integrals?
  • RedX
  • · Replies 2 ·
Replies
2
Graduate Entropy and the Uncertainty Principle
  • IttyBittyBit
  • · Replies 7 ·
Replies
7
Graduate Euclideanizing Action: Refs & Fermionic/Spin-1 YM Actions
  • TriTertButoxy
  • · Replies 1 ·
Replies
1
Quick Question: Normalising phi for the Hydrogen atom.
  • mrausum
  • · Replies 2 ·
Replies
2
Graduate Problem with Path Integral Expressions in Peskin And Schroeder Section 9.1
  • maverick280857
  • · Replies 4 ·
Replies
4
Graduate One atom in space what happens
  • Quantom
  • · Replies 2 ·
Replies
2
Graduate Simplified Heisenberg Hamiltonian; Linear combinations of basis states
  • Skatch
  • · Replies 2 ·
Replies
2
Graduate Is the Classical Limit of Quantum Field Theory a Valid Inquiry?
  • maverick280857
  • · Replies 3 ·
Replies
3
Graduate Why is Rabi frequency important in physics?
  • KFC
  • · Replies 4 ·
Replies
4
Graduate How does the interaction between two quantum systems form entanglement?
  • alexepascual
  • · Replies 3 ·
Replies
3
Graduate Sampling at 1/n Planck Time: Synchronizing Samplers and Analyzing Data Values
  • Hippasos
  • · Replies 3 ·
Replies
3
Graduate What is the Weyl symbol and its relation to the propagator in QFT?
  • maverick280857
  • · Replies 4 ·
Replies
4
Graduate Pauli's exclusion principle and cooper pairs
  • noblegas
  • · Replies 7 ·
Replies
7
Graduate Quantum Leaping & Perpetual Motion?
  • Kryptech
  • · Replies 3 ·
Replies
3
Graduate Does particle interaction take time?
  • wilco97531
  • · Replies 7 ·
Replies
7
Graduate Quantum Cosmology - Imaginary Time
  • putongren
  • · Replies 1 ·
Replies
1
Graduate Quantum Theory & Null Hypothesis: Impact & Obsoleteness
  • Hippasos
  • · Replies 3 ·
Replies
3
Graduate Path Integral Propagator Normalization in Lewis Ryder's QFT book
  • maverick280857
  • · Replies 9 ·
Replies
9
Graduate Photoelectric and Compton Effects
  • Red_CCF
  • · Replies 6 ·
Replies
6
Graduate What Are the Forbidden Regions in Finite Square Wells?
  • Mike89
  • · Replies 2 ·
Replies
2
Graduate Is the Born Approximation in Cohen-Tannoudji vol 2 textbook accurate?
  • MathematicalPhysicist
  • · Replies 1 ·
Replies
1
Graduate What's the total angular momentum operator for a system of two particles?
  • AxiomOfChoice
  • · Replies 1 ·
Replies
1
Graduate Photon wavelength quantization?
  • espen180
  • · Replies 2 ·
Replies
2
Undergrad Where do electromagnetic waves not penetrate through holes?
  • Edi
  • · Replies 8 ·
Replies
8
Graduate Can Bethe Ansatz Solve Multiple Fermionic Particles in a 1D Infinite Well?
  • xlines
  • · Replies 1 ·
Replies
1
Graduate Understanding Spin Density Matrix Invariance
  • baru
  • · Replies 1 ·
Replies
1
Graduate What do you think these Weak Measurement, Quantum Uncollapse Tests. Re-write QM?
  • Wangf
  • · Replies 29 ·
Replies
29
Graduate Can a Quantum Mechanic Fix Your Physics Problems?
  • kldickson
  • · Replies 5 ·
Replies
5
Graduate Time and Space Theory (pleas critic and give your ideas)
  • Raakam
  • · Replies 1 ·
Replies
1
High School Seeking Point Particle Explanation
  • AndyDufresne
  • · Replies 29 ·
Replies
29
Graduate Fermions in bound states and their wavefunctions
  • ZombieCat
  • · Replies 3 ·
Replies
3
Graduate Hilbert space dimension contradiction
  • adjklx
  • · Replies 23 ·
Replies
23
Graduate What preliminary knowledge of QM should I know before learning QFT
  • MathematicalPhysicist
  • · Replies 8 ·
Replies
8
Graduate Invariance of Schrödinger's equation
  • tommy01
  • · Replies 3 ·
Replies
3
Graduate What is the significance of the LSZ reduction formula in Srednicki's QFT book?
  • haushofer
  • · Replies 9 ·
Replies
9
Unreliable Sci-Fi Writer Attributes Quantum Flux
  • flatmaster
  • · Replies 3 ·
Replies
3
Graduate Why is a probe field necessary in pump-probe experiments?
  • KFC
  • · Replies 4 ·
Replies
4
Graduate Little fundamental question
  • facenian
  • · Replies 3 ·
Replies
3
Graduate Diffraction Grating Video (QED)
  • maverick_starstrider
  • · Replies 2 ·
Replies
2
Graduate Answer Me Precisely: Electronic Density Probability
  • Karrar
  • · Replies 5 ·
Replies
5
High School Cave of the Winds, CO - photons
  • neg entropy
  • · Replies 3 ·
Replies
3
Graduate Why Do Electromagnetic Interactions Involve Photons as Mediators?
  • tiny-tim
  • · Replies 2 ·
Replies
2
Graduate Is free will possible in Conway and Kochen's FW theorem?
  • Descartz2000
  • · Replies 4 ·
Replies
4
Undergrad Understanding Atom Excitation: Natural vs Triggered Movement and Photon Emission
  • wavingerwin
  • · Replies 3 ·
Replies
3
Are there any real quantum experiment videos available online?
  • maverick_starstrider
  • · Replies 10 ·
Replies
10
Graduate Question on function of operators
  • facenian
  • · Replies 6 ·
Replies
6
Graduate Are Quantum Boundaries Indefinite?
  • wittgenstein
  • · Replies 4 ·
Replies
4
Undergrad I really with spin quantum number.
  • Sunny09
  • · Replies 1 ·
Replies
1
Graduate Second Quantization: What Is It?
  • hagopbul
  • · Replies 1 ·
Replies
1
Graduate Wavefunction for particle inside a disk
  • lolgarithms
  • · Replies 13 ·
Replies
13
Undergrad Photoelectric Effect and light as a particle
  • Cmertin
  • · Replies 6 ·
Replies
6
Graduate Non-degenerate and degenerate perturbation theory
  • Lucien1011
  • · Replies 13 ·
Replies
13
Graduate Virtual Particles: Real or Not?
  • wittgenstein
  • · Replies 5 ·
Replies
5
Graduate Energy, Time, Position, Momentum which is more fundamental?
  • compton
  • · Replies 4 ·
Replies
4