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
Threads
Graduate Does quantum physics treat time as absolute or relative?
- ivan
- · Replies 19 ·
Graduate A photon as a phonon in ether?
- kcodon
- · Replies 18 ·
Graduate How does ⟨x|p̂|ψ⟩ equal -iℏ∂ψ/∂x?
- BeauGeste
- · Replies 15 ·
Graduate What is the relationship between wave functions and molecules?
- Mephisto
- · Replies 4 ·
Graduate Is Modern Aether Theory Valid Against Einstein's Relativity?
- kcodon
- · Replies 10 ·
Undergrad About the radiation of blackbody
- arron
- · Replies 4 ·
Graduate Operator in non-orthogonal basis
- j_dirac
- · Replies 5 ·
Graduate Who Developed the Sequential Stern-Gerlach Apparatus and Formalism?
- phyfor
- · Replies 2 ·
Graduate Complex simple Lie algebras classification
- Reperio
- · Replies 1 ·
Undergrad How The Mass Of an Electron Was Worked Out
- Homewoodm01
- · Replies 4 ·
Graduate Very basic questions about QFT
- nrqed
- · Replies 12 ·
Graduate Understanding Spin 1/2 Particles - Writing Expressions
- quantumlooser
- · Replies 1 ·
Undergrad What factors determine the ability of a substance to transmit light?
- kcodon
- · Replies 8 ·
Graduate Afshar 2 slit experiment-peer review
- Photongod
- · Replies 19 ·
Undergrad What is the force that holds atoms together in a substance?
- arul_k
- · Replies 5 ·
Graduate Photons, particles and wavepackets
- jostpuur
- · Replies 102 ·
Can a Cat with Toast Defy the Laws of Physics in Quantum Mechanics?
- Remnant
- · Replies 5 ·
Graduate Is Quantum Chaos Real Despite Contradictions in Physics?
- Quantum River
- · Replies 12 ·
A Book on Quantum Physics by a Russian Author
- zapp
- · Replies 1 ·
Graduate Can atoms produce sound waves and be silenced by wave cancellation?
- ShadowWorks
- · Replies 6 ·
Undergrad What do the basic notations in quantum physics mean?
- xusword
- · Replies 4 ·
Graduate How Do Photons Exhibit Wave Interference?
- free_electron
- · Replies 7 ·
Graduate What does the quantum Fourier transform do to the input register in Shor's algorithm?
- michael879
- · Replies 2 ·
Graduate Commutator with r, p_r and angular momentum
- omyojj
- · Replies 3 ·
Graduate Validity condition for time-independent perturbation theory
- cks
- · Replies 1 ·
Graduate Photon Particle Wave or Straight?
- jobyts
- · Replies 5 ·
Graduate Is the Casimir Effect a Viable Source of Free Energy?
- Hippodag
- · Replies 17 ·
Graduate Gordon decomposition an right current
- OOO
- · Replies 15 ·
Graduate Pure Electron Diffraction Experiments
- lalbatros
- · Replies 3 ·
Graduate Quantum uncertainty and digital data
- paulselhi
- · Replies 1 ·
Graduate The use of Eigenvalues/function in QM
- AcidBathSDMF
- · Replies 9 ·
Graduate Field Quantization: Is "Forces Exchanged by Particles" a Deep Concept?
- Ratzinger
- · Replies 2 ·
Graduate How do instantaneous potentials avoid contradicting special relativity?
- jostpuur
- · Replies 3 ·
Graduate Tracking or tagging a single atom in a gas
- learningphysics
- · Replies 7 ·
Undergrad Binding Energy in U-235 and daughter atoms
- physmurf
- · Replies 5 ·
Graduate What is the Significance of Substituting p for -p in the Klein-Gordon Equation?
- M. Kohlhaas
- · Replies 3 ·
Graduate Unique to within a constant factor?
- cks
- · Replies 4 ·
Graduate Free-Air Transmission and Quantum Effects?
- JDługosz
- · Replies 3 ·
Graduate What does the probability current represent physically?
- Rahmuss
- · Replies 7 ·
Graduate Does fast measurement prevent decoherence in qubits?
- michael879
- · Replies 1 ·
Graduate Interference of two particles - how does it work?
- Anthus
- · Replies 10 ·
Graduate Why must W matrix elements match H0 eigenvalue differences?
- cks
- · Replies 3 ·
Graduate Entanglement and two electrons separated by the universe
- Alan J.
- · Replies 2 ·
Graduate Distinguishing between superposition and hidden information
- michael879
- · Replies 13 ·
Graduate Does measuring one entangled electron's spin on a different axis change the other's?
- Xori
- · Replies 4 ·
Graduate Physical Meaning of QM Expectation Values and other ?s
- Rahmuss
- · Replies 40 ·
Graduate Application of true randomness
- Xori
- · Replies 3 ·
Graduate How is electron formed? Why does it travel?
- Skhandelwal
- · Replies 36 ·
Undergrad Why can't electrons absorb excess photon energy and re-emit it?
- kcodon
- · Replies 7 ·
Undergrad How to Explain Wave Phase Difference Physically?
- mcquarr
- · Replies 2 ·
Graduate Are spin matrices only for spin 1/2, or do they exist for arbitrary spin?
- captain
- · Replies 2 ·
Graduate How exactly does diagonalization work and how is it useful in qm?
- captain
- · Replies 2 ·
Graduate What is a Spinor? Is it the Coefficients of a State Ket?
- captain
- · Replies 8 ·
Graduate Propagation speeds in literature
- jostpuur
- · Replies 6 ·
Graduate Why are Bloch eigenstates the only solutions in a periodic potential?
- tim_lou
- · Replies 25 ·
Graduate Understanding Light Propagation for Quantum Field Theory
- captain
- · Replies 11 ·
Graduate What is renormalization and what does it do?
- captain
- · Replies 21 ·
Graduate Deriving the Klein-Gordon field Hamiltonian from Peskin & Schroeder
- hellfire
- · Replies 10 ·
Undergrad Does Light Ever Travel Faster or Slower Than Speed C?
- journeytospace
- · Replies 1 ·
Graduate What does SU(2)_L × U(1)_Y gauge symmetry mean in electroweak theory?
- americanforest
- · Replies 3 ·
Graduate Which Formula Correctly Represents the Kinetic Orbital Momentum of an Electron?
- C_Ovidiu
- · Replies 2 ·
Graduate Finding Einstein’s Hidden Variable
- RandallB
- · Replies 39 ·
Graduate Collapses against conservation laws
- jostpuur
- · Replies 13 ·
Graduate Is quantum mechanics fundamentally probabilistic or deterministic?
- Proggle
- · Replies 19 ·
Graduate Simultaneous Entanglement of Particles: Frame of Reference Considerations
- idea2000
- · Replies 2 ·
Graduate How do Maxwell's equations relate to quantum electrodynamics?
- idea2000
- · Replies 14 ·
Graduate Watching a wavefunction gradually collapse
- marcus
- · Replies 2 ·
Graduate Best books on relativistic quantum mechanics for graduates
- iamquantized
- · Replies 5 ·
Graduate Why Hilbert Space is Necessary for Quantum Mechanics
- cesiumfrog
- · Replies 26 ·
Graduate How Does Chirality Impact the Dirac and Weyl Equations?
- iamquantized
- · Replies 2 ·
Graduate When is the Interaction representation used and why?
- DonnerJack
- · Replies 2 ·
Graduate DDCS: Understanding What it Measures
- TimNguyen
- · Replies 1 ·
Graduate Hamiltonian and energy momentum tensor
- captain
- · Replies 2 ·
Graduate Quantum Leap FTL: Is it Possible?
- yuiop
- · Replies 3 ·
Graduate Why Do We Need Wave Packets in Water Waves?
- hanson
- · Replies 6 ·
Graduate How Do Delta-Like Potentials Affect Normal Modes in a 1D Elastic String?
- Slaviks
- · Replies 1 ·
Graduate What are the Decay Modes of the Higgs? Recommendations for Further Reading
- americanforest
- · Replies 2 ·
Graduate Struggling with quantum mechanics basics in college
- bender
- · Replies 11 ·
Graduate Schrödinger equation: macro level
- _Andreas
- · Replies 2 ·
Graduate Lagrangian and hamiltonian formalism
- captain
- · Replies 13 ·
Graduate Can the Hamiltonian be derived directly from the Schrödinger equation?
- joarb
- · Replies 7 ·
Graduate What is meant by a two state system in Sakurai's treatment of Stern-Gerlach?
- neelakash
- · Replies 4 ·
Undergrad How are the formulas in QM derived?
- arzie2000
- · Replies 10 ·
Graduate Does Photons bouce off eachother
- bassplayer142
- · Replies 4 ·
Undergrad Molecular switch and mobius molecules.
- melrose
- · Replies 5 ·
Graduate What are the two principles that prevent walking through a wall?
- pivoxa15
- · Replies 30 ·
Graduate Teleportion of particles in Vienna in 2000
- lboeckl
- · Replies 3 ·
Graduate Understanding Mediators and Contact Interactions in Quantum Mechanics
- eraemia
- · Replies 3 ·
Graduate Is Time Composed of Discrete Units in Physics Literature?
- teleport
- · Replies 5 ·
Graduate Quantum Erasure 9903047 - Issues
- zekise
- · Replies 17 ·
Graduate Does the Schrödinger equation explain spin and the Pauli Exclusion Principle?
- Rade
- · Replies 1 ·
Graduate What does it mean for a field to be quantized?
- captain
- · Replies 24 ·
Graduate Why does i\hbar(∂/∂t + iΩ) equal the conjugate form?
- dream_chaser
- · Replies 2 ·
Graduate Why does observation collapse the wave function if photons interact with particles anyway?
- tommyburgey
- · Replies 17 ·
Graduate Linearity of A Hermitian Operator
- buraqenigma
- · Replies 6 ·
Graduate Does observation or knowledge collapse the wavefunction in the double slit experiment?
- Morga
- · Replies 13 ·
Graduate Answers of questions in mathematics of classical and quantum physics
- ercagpince
- · Replies 1 ·
Graduate What is the difference between neutrino helicity and chirality?
- JDługosz
- · Replies 12 ·
Graduate Q concerning Schrödinger’s equation
- JDługosz
- · Replies 6 ·
Graduate Energy required to create electron positon pair
- emanaly
- · Replies 2 ·