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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Graduate Is quantum physics fundamentally incompatible with classical physics?
- Rolliet
- · Replies 26 ·
Graduate Derivation of T1 term in Bloch equations
- kcant6453
- · Replies 5 ·
Graduate Does not finding an electron in a search collapse its wave function?
- rasp
- · Replies 15 ·
High School Is quantum physics a theory of unknowledge ?
- jk22
- · Replies 4 ·
Graduate Why do Black Holes evaporate due to Hawking radiation?
- lightoflife
- · Replies 6 ·
Graduate Using GHz multi-particle entanglement for FTL communication
- r20
- · Replies 16 ·
Graduate Do X-Ray Tracks in Photo Film Suggest Quantum Entanglement?
- Swamp Thing
- · Replies 6 ·
Graduate Can I Make a Casimir Device at Home?
- Electro97
- · Replies 1 ·
Graduate Does entangled polarized photon get through filter?
- entropy1
- · Replies 5 ·
Graduate Total angular momentum operator for a superposition
- DivGradCurl
- · Replies 10 ·
Graduate Harmonic oscillator coherent state wavefunction
- quantum539
- · Replies 4 ·
Graduate Field Excitations and their Collisions
- Ryan Reed
- · Replies 1 ·
Graduate Coherence length of a single photon
- DaTario
- · Replies 5 ·
Graduate Why do we need a normalisation constant for wavefunctions?
- Molar
- · Replies 4 ·
Graduate Does Conscious Observation Influence Quantum State Collapse?
- stfaivus
- · Replies 9 ·
Graduate Is an electron considered a singularity by some physicists?
- lightoflife
- · Replies 5 ·
Graduate QM notes with entanglement, Bell, decoherence, etc.
- Lapidus
- · Replies 5 ·
Graduate Superposition / Probability Wave - frame rate problem?
- Quinnjin
- · Replies 17 ·
Graduate How to Graph an Electron Orbital?
- Ryan Reed
- · Replies 5 ·
Graduate Can this be explained using statistical mechanics only?
- Christian Grey
- · Replies 1 ·
Graduate What do multiple quantum numbers in a ket notation mean?
- leonmate
- · Replies 5 ·
Graduate How does scalar field transform under Lorentz transformation?
- soviet1100
- · Replies 2 ·
Graduate Question on quantum entanglement
- headneophyte
- · Replies 3 ·
Graduate How to Relate \(\frac{1}{m^2}\lambda J^4\) to Figure 1.7.1 in Zee's QFT Book?
- chern
- · Replies 7 ·
Graduate What does spin up and spin down mean in quantum mechanics?
- xXDEMAMAXx
- · Replies 2 ·
Undergrad Implications of the Delayed Choice Quantum Eraser
- Kansas_Cowboy
- · Replies 49 ·
Graduate Dirac Equation - Analytic Solution?
- LarryS
- · Replies 5 ·
Graduate Are Hilbert spaces still necessary?
- burakumin
- · Replies 11 ·
Graduate Ground state and stationary states
- Einstein Jr.
- · Replies 2 ·
Graduate What actually happens when light meets a surface(QED or QM)?
- Christian Grey
- · Replies 2 ·
Graduate Do Spin-Orbit Interactions change the Orbital of an Electron
- Ryan Reed
- · Replies 2 ·
The Dancing WuLi Masters: Fact or Fiction?
- A AM ARYA
- · Replies 5 ·
Undergrad Introduction to relativistic quantum mechanics and maybe QFT
- dsatkas
- · Replies 78 ·
Undergrad Understanding STM Microscopes: The Role of Voltage in Physics
- Nav
- · Replies 1 ·
Graduate What operators are involved in angular momentum states?
- leonmate
- · Replies 5 ·
Graduate Is DCQE erasing information or resetting the system?
- midix
- · Replies 10 ·
Undergrad Schrodinger's cat, the multiverse and isolated systems
- quantumfunction
- · Replies 61 ·
Graduate Hanbury Brown and Twiss effect explanation
- inkskin
- · Replies 28 ·
Graduate Can Non Realism = Non Deterministic Hidden Variable Theory
- Point Conception
- · Replies 33 ·
Graduate Is quantum programming really possible?
- JakesDev96
- · Replies 2 ·
Graduate Thermal Emission and Scattering (Mie or Rayleigh)
- K41
- · Replies 3 ·
Graduate Comments - Some Useful Integrals In Quantum Field Theory
- bhobba
- · Replies 2 ·
Graduate Macroscopic observation of interference?
- Feeble Wonk
- · Replies 10 ·
High School How does quantum tunneling occur without an observer?
- Juraj
- · Replies 114 ·
High School Do each point in solid have a special energy state?
- persia77
- · Replies 5 ·
Graduate Measurement operator for Chsh experiment
- jk22
- · Replies 1 ·
Graduate Quantum Threshold Scheme , no cloning theorem
- Shivam Saluja
- · Replies 1 ·
Graduate Is electron-electron excitation the same as the photoelectric effect?
- CAH
- · Replies 16 ·
Graduate Does the Spin of an Atom's Electrons Affect its Orbital Configuration?
- Ryan Reed
- · Replies 10 ·
Graduate What's the universe collapsing into?
- friend
- · Replies 48 ·
Graduate Is there a difference between an electron anti-neutrino and a positron neutrino?
- Mr. Mackey
- · Replies 1 ·
Undergrad Is the Planck length the smallest measurable length?
- Danyon
- · Replies 9 ·
Graduate Can (almost) all the properties be entangled
- whatdoido
- · Replies 7 ·
Graduate Can uncertainty principle explain why a compressed floor pushes back?
- Vannay
- · Replies 4 ·
Graduate Dimensional analysis on equation including scattering length
- KFC
- · Replies 6 ·
Graduate Does CP Violation Influence Entropy Through Altered Thermal Radiation?
- tzimie
- · Replies 6 ·
High School How Does Quantum Entanglement Not Violate Causality?
- TMO
- · Replies 28 ·
Graduate Double slit experiment - bias towards normal pattern?
- MJE34
- · Replies 15 ·
Graduate Commutator of creation/annihilation operators (continuum limit)
- soviet1100
- · Replies 2 ·
Graduate Weinberg 5.9.34: Is Charge Conservation Resolved?
- stedwards
- · Replies 2 ·
Graduate How to Generate a 3D Grid for Tight Binding Wave Functions?
- wellery
- · Replies 1 ·
Graduate Double slit experiment and mirrors
- m_robertson
- · Replies 1 ·
Graduate Can Electron Teleportation Occur in Small Time Intervals?
- Juraj
- · Replies 3 ·
Graduate Sterman's QFT - 2.7b (on functional derivatives)
- ddd123
- · Replies 3 ·
Graduate What is the accepted interpretation of the quantum nature of matter?
- hellsteiger
- · Replies 47 ·
Graduate QM and Crook's Fluctuation Theorem
- Jimster41
- · Replies 6 ·
Graduate The Significance of the Hermition Conjugate in Wave Functions
- deependra1003
- · Replies 8 ·
Graduate Kim's delayed choice quantum eraser -- Is it really delayed?
- andrewkirk
- · Replies 38 ·
Graduate Delayed choice measurement subsequent analysis
- Cobalt101
- · Replies 1 ·
Graduate How is speed of light in glass defined in QM/QED?
- LarryS
- · Replies 3 ·
Undergrad Empty space in atoms vs orbits
- skepticwulf
- · Replies 11 ·
Graduate Can hidden variable theories assign values to observables?
- naima
- · Replies 10 ·
Graduate Understanding Eigenfunctions and Operators in Quantum Mechanics
- D_Cross
- · Replies 16 ·
Graduate How to construct Slater determinants for helium ground and excited states
- fricke
- · Replies 6 ·
Graduate How different can quantum vacuums be?
- quantumfunction
- · Replies 2 ·
Graduate Relationship between measurement and temperature
- Jimster41
- · Replies 1 ·
Graduate Raman Spectroscopy: Why Peaks of Stokes Higher than Anti-Stokes?
- fricke
- · Replies 3 ·
Graduate Resolution to the Delayed choice quantum eraser?
- Gothican
- · Replies 60 ·
Graduate Polarisation destroying interference pattern for double slit
- andrewkirk
- · Replies 3 ·
Graduate Experimental verification of matter waves?
- Sturk200
- · Replies 12 ·
Graduate Can extra dimensions explain entanglement without superluminal signaling?
- Rosen
- · Replies 11 ·
Graduate Can We Track a Photon's Path in the Double Slit Experiment?
- JoshuaMandlazi
- · Replies 12 ·
Graduate Does classical vacuum permittivity have a QM analog?
- LarryS
- · Replies 12 ·
Graduate Kronecker function products - matrix format
- hermish
- · Replies 3 ·
Graduate What happens to quantum mechanics if Planck constant is zero?
- fricke
- · Replies 9 ·
Insights Some sins in physics didactics - comments
- vanhees71
- · Replies 203 ·
Graduate Do momentum and kinetic energy operators always commute for a free particle?
- fricke
- · Replies 6 ·
Graduate How to estimate the power of laser beam
- KFC
- · Replies 1 ·
Graduate Decoherence and double-slit with eraser
- VALENCIANA
- · Replies 1 ·
Graduate Particle in a box with the finite depth
- fricke
- · Replies 2 ·
Graduate About wavepacket unit and probability
- KFC
- · Replies 49 ·
Graduate Bra's and Ket's independent of basis?
- Nathew
- · Replies 2 ·
Graduate How 2 particles become entangled?
- lightarrow
- · Replies 28 ·
Graduate QED renormalization in Peskin's
- Trifis
- · Replies 10 ·
Graduate Is the potential V=(|x|-a)² exactly solvable in quantum mechanics?
- Kurret
- · Replies 2 ·
Graduate Is Light a Particle or a Wave According to Quantum Theory?
- KiNGGeexD
- · Replies 51 ·
Graduate Wavefunction collaps past/future effect
- batmanmg
- · Replies 3 ·
Graduate What is QCD (quantum chromodynamics)?
- Alfie Simpson
- · Replies 2 ·
Graduate What is the Entropy of a System with Doubly Degenerate Energy Level?
- Philip Wood
- · Replies 4 ·
Graduate Double slit experiment with 2 detectors
- Splizard
- · Replies 3 ·