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Quantum Interpretations and Foundations

How valid is the indivisible interpretation of quantum mechanics?
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Graduate How valid is the indivisible interpretation of quantum mechanics?
Undergrad Why are cumulants extensive and moments are not?
  • annaphys
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Undergrad Quantum state variable for entangled system
  • nomadreid
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Undergrad Location of the quantum effect
  • homerwho
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Undergrad Rigged Hilbert Space X: Eq (1) and (2)
  • TTT
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Undergrad Higgs Boson: What Gave Quarks & Leptons Mass?
  • Ranku
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14
Undergrad Cosmic Rays could reveal if we're actually living in a simulation?
  • Endypanzer
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Graduate Classical limit of the propagator
  • crises
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Undergrad How Do Quantum Equations Predict Outcomes in Research?
  • stef3679
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Undergrad Can Different Shapes of Slits Affect the Diffraction Pattern of Single Photons?
  • DenniSys
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Undergrad What happens if a low energy photon collides with an atom in the ground state?
  • fxdung
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Undergrad QM & Motion: Is There Consensus?
  • Zelebg
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High School The nature of virtual photons in quantum electrodynamics
  • Sophrosyne
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6
Undergrad QED & In-Ground Electrons: Why No Photon Emission?
  • fxdung
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9
Graduate Fermion mass terms in Peskin and Schroeder's book
  • Geonaut
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6
Undergrad Taking a partial trace of a multipartite state for measurement
  • beefbrisket
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Undergrad Using the Variational Method to get higher sates
  • ExplosivePete
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3
Undergrad An elementary question about rotations
  • Silicon-Based
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Undergrad Why in BEC we must separate number of particles of ground state?
  • fxdung
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5
Graduate Vibrational relaxation through electron-hole pairs
  • thearif333
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Undergrad Do macro objects get entangled?
  • entropy1
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Undergrad Why don't Cooper electrons accelerate infinitely?
  • member 666967
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Graduate Stuck on evaluating this functional determinant
  • TroyElliott
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2
Undergrad Difference between electrodynamic suspension (EDS) & quantum levitation?
  • kipling_01
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Undergrad Integral in a variational principle problem
  • MrMuscle
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3
Graduate Expectation Value of a Stabilizer
  • Johny Boy
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Graduate Constructive QFT - current status
  • Auto-Didact
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Graduate Vector and Axial vector currents in QFT
  • RicardoMP
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Undergrad Even/Odd solutions for particles in boxes
  • MaestroBach
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6
Undergrad Best sources to understand the Wigner-Eckart theorem?
  • andresB
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1
Undergrad Why does the energy level of an electron in an atom have a width?
  • fxdung
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3
Undergrad Question regarding a Free particle and Hilbert space (QM)
  • CGandC
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5
Undergrad What Do Most Physicists Call the Quantum-To-Classical Cut?
  • bhobba
  • · Replies 24 ·
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24
Undergrad Compatible observables and commutator
  • Haynes Kwon
  • · Replies 1 ·
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1
Graduate Gauge Invariance of the Schrodinger Equation
  • Diracobama2181
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9
High School Electrons in a nonmoving conductor and non-varying magnetic field
  • PainterGuy
  • · Replies 6 ·
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6
Graduate Reading canonical commutation relations from the action (QHE)
  • binbagsss
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4
Undergrad Uncertainty between position and angular frequency - is this correct?
  • Negatratoron
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2
Undergrad Questions about Rotation Groups in Physics
  • Blub
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7
Graduate E-writing Action on a different slice of space-time, Quantum Hall Effect
  • binbagsss
  • · Replies 1 ·
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Undergrad Summary of the Universe (2019 version)
  • IvanC
  • · Replies 1 ·
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1
Undergrad Matrix Representation of the Angular Momentum Raising Operator
  • hnicholls
  • · Replies 7 ·
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7
Graduate Qubit Energy Level Required to be Unevenly Separated
  • metamaterial
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1
Graduate What Is the Renormalized Gluon Dressing Function?
  • RicardoMP
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1
Undergrad Deduce if the spectrum is discrete/continuous from the potential
  • QuasarBoy543298
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Undergrad Is the wavefunction always an analytic signal?
  • olgerm
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Graduate What Are the Key Insights into Electron Triplet States in Quantum Physics?
  • allisonpw
  • · Replies 14 ·
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14
High School Probability of spin in the +x direction
  • srallaba
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3
Undergrad Why do we need two representations of SU(3)
  • Jelly-bean
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8
Undergrad How can the photon wave function be described?
  • Jamister
  • · Replies 27 ·
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27
High School Does Retrospective Indeterminacy Reveal a Deterministic Universe?
  • Lynch101
  • · Replies 12 ·
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12
Graduate QHE ' the effective action should be a local functional'
  • binbagsss
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Graduate QHE: rotational invariance, no terms linear in E or B
  • binbagsss
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High School Measurement postulate = von Neumann’s projection postulate?
  • Aidyan
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2
High School Why is it assumed communication through entanglement would be FTL?
  • BoMbY
  • · Replies 148 ·
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High School How would time flow for each parallel universe?
  • Brennick908
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4
Graduate Is there a quantum uncertainty to the number of atoms in a marble?
  • jfizzix
  • · Replies 41 ·
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Graduate Classical fields: EM fields vs. Gravitational fields
  • SherlockHolmes
  • · Replies 23 ·
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23
Undergrad Why spin matrixes number of rows depends of spinn magnitude?
  • olgerm
  • · Replies 1 ·
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1
Undergrad Possible simple Density Matrix Question
  • Diracobama2181
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1
Graduate Can I get electronic copies of the original QM papers?
  • royp
  • · Replies 8 ·
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8
Undergrad Does light consist of oscillating vacuum fluctuations?
  • epotratz
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21
High School Can photons of visible light lose energy and become sub-visible?
  • royp
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Graduate Four spin 1/2 particles at the Vertices of tetrahedron
  • Diracobama2181
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Graduate Time-dependent unitary transformations of the Hamiltonian
  • Muninn
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9
Undergrad Understanding the Absence of Rabi Oscillations in the Interaction Picture
  • Jufa
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1
Undergrad Mirrors, phase shifts, and position
  • Talisman
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4
Undergrad On what plane of existence do quantum computations occur?
  • TunnelingthuWorlds
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High School Tunneling through possible worlds
  • TunnelingthuWorlds
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4
Graduate Canonical momentum ##\pi^\rho## of the electromagnetic field
  • Riotto
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4
Undergrad Boltzmann equation and energy level occupancy at infinitely high temp
  • Haynes Kwon
  • · Replies 11 ·
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11
Undergrad About L-S interaction or spin orbit coupling
  • Zala Jaydevsinh
  • · Replies 1 ·
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1
Graduate Solving Spin-Spin Interaction for Total Spin Commutation
  • Diracobama2181
  • · Replies 1 ·
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1
Graduate Fractional Quantum Hall Effect- degeneracy of ground state (Tong's notes)
  • binbagsss
  • · Replies 1 ·
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1
Graduate Kubo Formula Deriviation - interaction picture, complete eigenbasis
  • binbagsss
  • · Replies 1 ·
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1
Graduate Does The Use Of The Zeta Function Bypass Renormalization
  • bhobba
  • · Replies 3 ·
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3
Graduate Volume Element for Isotropic Harmonic oscillator
  • Diracobama2181
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1
Graduate Measuring Deflection of Star Light During Eclipse: Separating Space-Time Effects
  • Grossglockner
  • · Replies 5 ·
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5
Graduate About Glauber's formula(or special Baker–Campbell–Hausdorff
  • Frost_Xue
  • · Replies 7 ·
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7
Undergrad How does gauge symmetry arise in QFT and its implications?
  • CSnowden
  • · Replies 4 ·
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4
Graduate Spin change of Fermions and quantum energy spectrum
  • claymine
  • · Replies 1 ·
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1
Graduate Is renormalization the ideal solution?
  • Geonaut
  • · Replies 57 ·
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Graduate Hamiltonian background magnetic field, perturbed by electric field
  • binbagsss
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2
Undergrad Stern-Gerlach "interferometry"
  • WWCY
  • · Replies 10 ·
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10
High School Quantum computer vs supercomputer performance
  • Bob Walance
  • · Replies 8 ·
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8
Undergrad QED question: Photons absorbed and emitted by electrons
  • dsaun777
  • · Replies 19 ·
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19
Undergrad The expected value (or mean) of X
  • peace
  • · Replies 6 ·
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6
Graduate Time Dependent Perturbation of Harmonic Oscillator
  • Diracobama2181
  • · Replies 1 ·
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1
Graduate What is the definition of 'ground state',considering H- ion = -14.35eV
  • cmb
  • · Replies 2 ·
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2
Undergrad Confused about some notation used by Griffiths
  • kmm
  • · Replies 9 ·
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9
Undergrad Dirac notation and calculations
  • electrogeek
  • · Replies 9 ·
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9
Undergrad What do the commutation/anti-commutation relations mean in QFT?
  • moss
  • · Replies 18 ·
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18
High School Roger Penrose's need for a physics Grey area
  • edmund cavendish
  • · Replies 2 ·
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2
Undergrad Quantum number and group theory
  • Dalor
  • · Replies 10 ·
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10
Undergrad Relationship between EM and matter fields in QED
  • CSnowden
  • · Replies 19 ·
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19
Undergrad Probability flux inside the finite potential barrier
  • Haynes Kwon
  • · Replies 1 ·
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1
Undergrad Fourier Transform of the Wave function
  • Haynes Kwon
  • · Replies 1 ·
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1
High School Normalizability of continuous and discrete spectrum
  • Sunny Singh
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3
Undergrad Question about the Pauli equation
  • Airton Rampim
  • · Replies 4 ·
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4
High School Can a quantum particle be simulated on a classical computer?
  • TheQuestionGuy14
  • · Replies 1 ·
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1
High School What is the largest object that exhibits Quantum properties
  • Suppaman
  • · Replies 18 ·
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18