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 Local measurements on an entangled pair. (My understanding)
- ouacc
- · Replies 1 ·
Graduate Feynman propagator as distribution
- schieghoven
- · Replies 11 ·
Graduate Non-Physicist looking for an answer
- GordonBennett
- · Replies 16 ·
Graduate Why doesn't a narrow tube let me measure both photon position and momentum?
- kenewbie
- · Replies 21 ·
Graduate Two body problem of Hidrogen Atom
- torehan
- · Replies 1 ·
Graduate Angular Momentum, Spin and SO(3), SU(2), and Lorentz Group
- Gigi
- · Replies 2 ·
Graduate How Small Can Computers Get Before They Become Phantom Devices?
- leftyguitarjo
- · Replies 2 ·
Graduate Physicists Successfully Store and Retrieve Nothing
- SF
- · Replies 3 ·
Graduate True vacuums with no energy at all inside
- Meatbot
- · Replies 3 ·
Graduate Are the Quantum Numbers real ?
- Valery
- · Replies 8 ·
Graduate A common sense objection to tunneling?
- kenewbie
- · Replies 10 ·
Graduate The Meaning of Schrodingers Equation - In English
- dachikid
- · Replies 10 ·
Graduate Understanding Classical Physics: The Role of Planck Constant
- scarecrow
- · Replies 2 ·
Graduate Quantum computations, irreversibility, unitarity
- kdv
- · Replies 2 ·
Graduate Foldy-Wouthusien velocity operator
- noospace
- · Replies 5 ·
Graduate Why doesn't the hydrogen spectrum show binding energies of 4.53 or 2.26 evolts?
- edguy99
- · Replies 2 ·
Graduate Heisenberg's equation of motion
- noospace
- · Replies 5 ·
Graduate Berry's phase of bloch oscillation
- wdlang
- · Replies 1 ·
Graduate What Conditions Ensure Adiabaticity in a Slowly Varying Harmonic Oscillator?
- wdlang
- · Replies 1 ·
Graduate Spin of the sress-energy tensor in d=2
- navocane
- · Replies 1 ·
Graduate Do lamps emit photons one by one with random delays?
- coke
- · Replies 3 ·
Is the film about liquid nitrogen and superconductors accurate?
- Dimitar
- · Replies 23 ·
Graduate Charge In Schroedinger's Equation
- Chronothread
- · Replies 7 ·
Graduate What is the result of Fourier transformation of functional theta function?
- jarowit
- · Replies 3 ·
High School Getting Involved In High School?
- Glenn900
- · Replies 1 ·
Graduate Minimum possible energy for a particle in a box
- cojewmaw
- · Replies 1 ·
Graduate Momentum as the generator of translation
- jdstokes
- · Replies 8 ·
Undergrad What is the Uncertainty Principle in Quantum Physics?
- maxwilli06
- · Replies 8 ·
Graduate Information RE The Double-Slit Experiment?
- Arkanin
- · Replies 13 ·
Graduate Have you heard about QED coherence in matter?
- mgb2
- · Replies 1 ·
Graduate What's the difference between them
- enricfemi
- · Replies 5 ·
Graduate The idea behind renormalization group.
- mhill
- · Replies 3 ·
Graduate What happed to the other, if one entangled particle is destroyed
- ouacc
- · Replies 5 ·
Graduate Do waves and/or particles exist at all?
- Bosonichadron
- · Replies 8 ·
Graduate Are quantum waves real or just mathematical constructs?
- olcay
- · Replies 18 ·
Graduate How can the Cauchy integral and Fourier integral produce the same result?
- nrqed
- · Replies 317 ·
Graduate Linear terms in loop integrals vanish by symmetry
- auditor
- · Replies 2 ·
Graduate Are Electron Orbits Really Circular or Is It Just an Artist's Depiction?
- hinella
- · Replies 2 ·
Undergrad Converting cm^-1 for Fine-Structure Energy Difference
- somy
- · Replies 2 ·
Graduate Maxwell's equations, Orthogonality, electric and magnetic fields in EM
- nomadreid
- · Replies 27 ·
Graduate How Large Can a Nucleus Get Before Instability Sets In?
- John Richard
- · Replies 6 ·
Graduate Wave-Particle Duality: HotQuanta's Insight
- bennington
- · Replies 3 ·
Graduate Ansatz: Principle, Hypothesis, Boundary Condition?
- navigator
- · Replies 1 ·
Graduate Can virtual particles appear ANYWHERE?
- Meatbot
- · Replies 23 ·
Graduate When do we use notion of effective mass
- amitrt
- · Replies 1 ·
Graduate Noncommuting operators and uncertainty relations
- noospace
- · Replies 3 ·
Graduate Appropriate Concepts in the Formulation of Quantum Mechanics
- dx
- · Replies 30 ·
Graduate How do electrons survive at absolute zero?
- Denton
- · Replies 11 ·
Graduate Is the momentum operator Hermitian only for normalized wavefunctions?
- neelakash
- · Replies 4 ·
Graduate Visualisation of H2 molecule wavefuctions needed
- Ulysees
- · Replies 45 ·
Graduate How Do Frequencies Cancel Out in the Casimir Effect?
- spock0149
- · Replies 1 ·
Graduate What is a contact transformation according to Dirac's Lectures on QFT?
- Sonty
- · Replies 6 ·
Undergrad Wavelength - differences in equations
- The_ArtofScience
- · Replies 4 ·
Graduate Ground State Frequency of Electron in H+
- joecoss
- · Replies 2 ·
Graduate Understanding Hilbert Space in Quantum Mechanics: A Beginner's Guide
- Sterj
- · Replies 31 ·
Graduate Math Required for Quantum Mechanics and General Relativity
- IndustriaL
- · Replies 45 ·
Graduate Why Choose Liouville Representation Over Hamiltonian in Classical Mechanics?
- Vagant
- · Replies 1 ·
Graduate Starting Place For Quantum Physics
- _Mayday_
- · Replies 19 ·
Graduate How can decelerated electrons produce waves if the charge isn't oscillating?
- twinsen
- · Replies 4 ·
Is quantum physics connected to spirituality?
- oooonions
- · Replies 4 ·
Graduate How Does the Photoelectric Effect Transition from Wave to Particle Theory?
- i_island0
- · Replies 13 ·
Undergrad How do light, current, and magnetism relate in the electromagnetic spectrum?
- hobbesglobin
- · Replies 2 ·
Graduate Are Photons Truly Particles or Simply Waves?
- barquentine
- · Replies 4 ·
Graduate Can wave function overlap in potential wells explain attractive forces?
- michael879
- · Replies 1 ·
Undergrad Why Electrons Don't Fall Into Nucleus of Atoms
- TalhaZafer
- · Replies 2 ·
Undergrad What results when sound interacts with an Atom
- Atomic
- · Replies 2 ·
Graduate The exact meaning of the 4 components of the Dirac Spinor
- quantumfireball
- · Replies 14 ·
Graduate Propagator - Hankel function - infinite? - Weinberg
- tiny-tim
- · Replies 7 ·
Graduate Commutation relation for L_3 and phi
- ythaaa
- · Replies 1 ·
Undergrad Undergraduate Lab: Photoelectric Effect Experiment
- arhanbezbora
- · Replies 2 ·
Graduate What is the inner product in state (ket/Hilbert) space.
- jdstokes
- · Replies 2 ·
Graduate Back up a step, before Bell's theorem
- TedS
- · Replies 6 ·
Graduate Does the Phase Factor in Wave Function Matter?
- captain
- · Replies 5 ·
Graduate Opinions on the use of the expression Quantum Leap
- flying fish
- · Replies 20 ·
Graduate Quantum Paradox: Interfering Imaginary Slits?
- dx
- · Replies 2 ·
Graduate The Doppler Effect- According to Quantum Mechanics
- andmir92
- · Replies 2 ·
End of electrons leaving metal
- Ulysees
- · Replies 1 ·
Undergrad Why don't electrons leave a negatively charged metal in air?
- Ulysees
- · Replies 102 ·
Graduate Which Differential Equation Does a Finite Wave Train Follow?
- babblingsia
- · Replies 6 ·
Graduate Physical meaning of the 2 eigenfunctions of Free Particle
- cks
- · Replies 4 ·
Graduate Experimental distinction between states with one and two photons
- DaTario
- · Replies 19 ·
Graduate Why does 2-2 scattering amplitude depend on v₂, v₃, v₄ but not higher coupling constants?
- La Guinee
- · Replies 3 ·
Graduate Commuting metric past Dirac spinors?
- auditor
- · Replies 2 ·
Graduate Why do electrons in my body move through time with me?
- feelalive
- · Replies 2 ·
Graduate Why there isn't missing information in QM
- jackle
- · Replies 16 ·
Graduate What is the Locality Principle in Quantum Mechanics?
- rohanprabhu
- · Replies 7 ·
Graduate Scanning Tunnelling Microscope (STM)
- EIRE2003
- · Replies 5 ·
Graduate Quantum Hall Thruster? (QuantumHallEffect+HallThruster=?)
- sanman
- · Replies 13 ·
Graduate Is Gravity Linked to Quantum Entanglement?
- freewheelin
- · Replies 1 ·
Graduate Functional integral with delta distributions in the exponent
- mhill
- · Replies 2 ·
Graduate Problem resources for QED and quantum field theory at Peskin and Schroeder level
- kvl
- · Replies 6 ·
Graduate What Happens When We Cover Up One Slit in the Double Slit Experiment?
- Mashulike
- · Replies 4 ·
Graduate Hypothesis about Quantum Interference in Time
- peter0302
- · Replies 2 ·
Undergrad Do Photons Decay or Scatter?
- moe darklight
- · Replies 26 ·
Undergrad Can 2px, 2py, 2pz correspond to different magnetic quantum numbers?
- mkbh_10
- · Replies 12 ·
Graduate Can Single Photons Be Isolated and Accelerated?
- ffleming7
- · Replies 9 ·
Graduate Atom can give rise to singlet, doublet, triplet, and quartet states?
- gazepdapi1
- · Replies 4 ·
Graduate Physical Nature of Non-Zero Component in Finite Square Well Bound Eigenstates
- Atomos
- · Replies 9 ·
Graduate Fermi-Dirac statistics valid for electron gas in metals?
- blue2script
- · Replies 5 ·
Graduate The electromagnetic current vanishes identically in the Majorana case
- Urvabara
- · Replies 1 ·