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.

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?
Undergrad Generic Form of Hermitian Matrix
  • thatboi
  • · Replies 1 ·
Replies
1
Undergrad What Causes Ambiguity in Wick Rotation for Time-Ordered Correlators?
  • thatboi
  • · Replies 0 ·
Replies
0
High School Can we say a photon doesn't exist until the wavefunction collapses?
  • Kavi
  • · Replies 16 ·
Replies
16
Undergrad Boundary conditions for the momentum space SE
  • andresB
  • · Replies 17 ·
Replies
17
Graduate Wigner Weisskopf method for time varying Perturbation
  • masteralien
  • · Replies 3 ·
Replies
3
Undergrad Why is entanglement necessary in a quantum computer?
  • Trikenstein
  • · Replies 8 ·
Replies
8
Undergrad How does the quantum of action cause indeterminism?
  • pholmes
  • · Replies 6 ·
Replies
6
Undergrad Measurements and uncertainty principle
  • daniel444
  • · Replies 12 ·
Replies
12
Undergrad Physical Meaning of the Imaginary Part of a Wave Function
  • deuteron
  • · Replies 1 ·
Replies
1
Undergrad In the delayed-choice quantum eraser, why is a stepper motor used?
  • murtazashab
  • · Replies 2 ·
Replies
2
High School Entangled quants inside a particle accelarator
  • SchrodingersQuants
  • · Replies 4 ·
Replies
4
Undergrad How did Sommerfeld arrive at his quantum condition?
  • Half Infinity
  • · Replies 6 ·
Replies
6
Undergrad Why is Photon Energy Quantized in Terms of Sine Wave Frequency?
  • QuantumCuriosity42
  • · Replies 78 ·
3
Replies
78
Undergrad Force of an Electron on a Potential Wall?
  • HarrisonG
  • · Replies 7 ·
Replies
7
Undergrad Understanding the Dirac Delta Identity to Fetter and Walecka's Formula
  • thatboi
  • · Replies 2 ·
Replies
2
Undergrad Klein-Gordon equation and continuity equation
  • dyn
  • · Replies 6 ·
Replies
6
Undergrad Problem with the polarization of entangled photons
  • Christian Thom
  • · Replies 7 ·
Replies
7
Undergrad Can AIs act as conscious observers?
  • jeast
  • · Replies 12 ·
Replies
12
Undergrad Non-wave solution to wave equation and virtual particles
  • Fefetltl
  • · Replies 9 ·
Replies
9
Undergrad Where does the energy come from?
  • Wanda
  • · Replies 21 ·
Replies
21
Undergrad What Is the Smallest Change Detected by a Multiport Interferometer?
  • Precious Adegbite
  • · Replies 0 ·
Replies
0
Undergrad Trouble with Product of Green's Functions
  • thatboi
  • · Replies 0 ·
Replies
0
Undergrad Why do exponential functions occur outside of finite walls?
  • jjson775
  • · Replies 9 ·
Replies
9
Graduate "Nonclassical Advantage in Metrology" paper
  • PeterDonis
  • · Replies 0 ·
Replies
0
Undergrad De Broglie Wavelength at rest: λ = h/p = h/0 when v=0?
  • Kavi
  • · Replies 5 ·
Replies
5
Undergrad Mass Dimension of Fields (Momentum space)
  • thatboi
  • · Replies 2 ·
Replies
2
Undergrad Need help understanding the first single attosecond pulse measurement
  • genxium
  • · Replies 2 ·
Replies
2
Undergrad Can an atom absorb a photon, yet its total kinetic energy is decreased?
  • avicenna
  • · Replies 54 ·
2
Replies
54
Undergrad Lindbladian Jump Operators Condition
  • thatboi
  • · Replies 0 ·
Replies
0
Graduate Phase difference between electric and magnetic dipole moment
  • kelly0303
  • · Replies 0 ·
Replies
0
Undergrad How Is the Mixed State Density Matrix Represented in Quantum Computing?
  • thatboi
  • · Replies 8 ·
Replies
8
Undergrad Density Matrix of Multiple Qubits
  • thatboi
  • · Replies 9 ·
Replies
9
Undergrad Does the Photon Play a Crucial Role in Quantum Mechanics?
  • neobaud
  • · Replies 64 ·
3
Replies
64
High School What is causing destructive interference in double slit experiment?
  • Addez123
  • · Replies 32 ·
2
Replies
32
Graduate Is entanglement also for time-like intervals?
  • Heidi
  • · Replies 3 ·
Replies
3
Undergrad Is entanglement a consequence of the singularity of the early universe?
  • malvernstar
  • · Replies 2 ·
Replies
2
Undergrad Looking for resources about tunneling effect on two delta functional barriers
  • Andre_86
  • · Replies 1 ·
Replies
1
Undergrad How Is the Integral from (3-22) to (3-23) Calculated in Quantum Mechanics?
  • jamal_lamaj
  • · Replies 5 ·
Replies
5
Undergrad Confusion about Scattering in Quantum Electrodynamics
  • physwiz222
  • · Replies 134 ·
5
Replies
134
Undergrad About time-independent non-degenerate perturbation expansion
  • Ishika_96_sparkles
  • · Replies 3 ·
Replies
3
Undergrad Magnetic flux through a superconducting ring
  • Lagrange fanboy
  • · Replies 5 ·
Replies
5
High School Frequency of an EM wave in Classical and Quantum Physics
  • Hak
  • · Replies 6 ·
Replies
6
Graduate How to draw the angles of the CKM matrix?
  • Heidi
  • · Replies 3 ·
Replies
3
High School Quantum Nonlocality or Non Counterfactual Definiteness?
  • Point Conception
  • · Replies 3 ·
Replies
3
High School What is the size of a VHF photon?
  • Dante Meira
  • · Replies 11 ·
Replies
11
High School Why doesn't the electron "wave" collapse at the double-slit?
  • francis20520
  • · Replies 28 ·
Replies
28
Undergrad Quantum behavior experiment flawed?
  • tistemfnp
  • · Replies 40 ·
2
Replies
40
Undergrad Is it possible for a BBO crystal to produce an interference pattern?
  • Herbascious J
  • · Replies 1 ·
Replies
1
Undergrad Measurement and Thermal Effects Similar?
  • bushmonk
  • · Replies 18 ·
Replies
18
Undergrad Recommendations for learning renormalization?
  • RobertGC
  • · Replies 18 ·
Replies
18
Graduate Creation and annihilation operator
  • Sebas4
  • · Replies 3 ·
Replies
3
Graduate Solving renormalization group equation in QFT
  • qft-El
  • · Replies 5 ·
Replies
5
High School Is Quantum Mechanics necessary for understanding electromagnetic phenomena?
  • brianhurren
  • · Replies 2 ·
Replies
2
Undergrad Energies of bound state for delta function potential
  • ErwinZumer
  • · Replies 2 ·
Replies
2
High School Searching for Quantum Mechanics Lecture on Delayed Choice Experiment
  • kesha1
  • · Replies 15 ·
Replies
15
Undergrad How to distinguish between diagonal vs horizontal/vertical polarization?
  • JamesPaylow
  • · Replies 15 ·
Replies
15
Undergrad Point of Demarcation between Quantum and Classical Behavior
  • Twodogs
  • · Replies 12 ·
Replies
12
Graduate Are irreversible processes absolutely irreversible, even given infinite time?
  • Kinker
  • · Replies 1 ·
Replies
1
Undergrad Is Calcite a parallel to the Stern-Gerlach experiment?
  • Frigorifico9
  • · Replies 43 ·
2
Replies
43
Graduate Renormalized vertex functions in terms of bare ones
  • Siupa
  • · Replies 0 ·
Replies
0
Undergrad How does one time-evolve a quantum state with its kernel function?
  • Sciencemaster
  • · Replies 0 ·
Replies
0
Graduate Quantization of real Klein-Gordon field (sign issues)
  • The Tortoise-Man
  • · Replies 24 ·
Replies
24
Graduate Anti-commutation relation for quantized fields
  • The Tortoise-Man
  • · Replies 13 ·
Replies
13
Undergrad Black Hole Fire Walls, Brick Walls, and the Casimir Effect
  • .Scott
  • · Replies 6 ·
Replies
6
Undergrad Impossible probability between theoretical possibility and reality
  • Kinker
  • · Replies 23 ·
Replies
23
High School Quantum Entanglement in Practice
  • Pixelex
  • · Replies 2 ·
Replies
2
High School Does decoherence prevent 100% of quantum tunneling of macro object?
  • Kinker
  • · Replies 4 ·
Replies
4
Undergrad If we wait infinitely long, will macroscopic objects undergo quantum tunneling?
  • Kinker
  • · Replies 54 ·
2
Replies
54
Undergrad Can Electrons or Photons Exceed Light Speed?
  • cathrynliz
  • · Replies 1 ·
Replies
1
Undergrad Questions on the classical interpretation of (normal) Zeeman effect
  • ValeForce46
  • · Replies 10 ·
Replies
10
High School Wavefunction and Lorentz Invariance
  • cosmanino2050
  • · Replies 1 ·
Replies
1
High School Preference for the notation used for the wave function?
  • entropy1
  • · Replies 9 ·
Replies
9
Undergrad In what chapter do Mehra and Rechenberg discuss Pauli matrices?
  • Frigorifico9
  • · Replies 6 ·
Replies
6
Undergrad Could a quantum computer simulate any system based on different types of logic?
  • murtazashab
  • · Replies 2 ·
Replies
2
Graduate Lagrangian in the Path Integral
  • YeaNah
  • · Replies 13 ·
Replies
13
Undergrad Question about Stern-Gerlach experiment
  • okaythanksbud
  • · Replies 12 ·
Replies
12
Undergrad Is my interpretation of the g-factor correct?
  • Frigorifico9
  • · Replies 4 ·
Replies
4
High School Direct sum decomposition into orthogonal subspaces
  • sindhuja
  • · Replies 2 ·
Replies
2
Undergrad Who was the first to make a Stern-Gerlach experiment with two magnets?
  • Frigorifico9
  • · Replies 9 ·
Replies
9
Undergrad Normalizing factor of wave function
  • Lagrange fanboy
  • · Replies 13 ·
Replies
13
Undergrad What Is the Difference Between Loss and Cost Functions in Quantum Computing?
  • SaschaSIGI
  • · Replies 3 ·
Replies
3
Undergrad Electrical Analog of Aharonov-Bohm Effect
  • LarryS
  • · Replies 8 ·
Replies
8
Undergrad Parallel transport and entanglement
  • Heidi
  • · Replies 5 ·
Replies
5
Undergrad When was the formula for the Stern-Gerlach experiment found?
  • Frigorifico9
  • · Replies 7 ·
Replies
7
High School Help interpret quantum states of molecular rotation and torsion
  • syfry
  • · Replies 4 ·
Replies
4
Graduate SU(2) and SU(3) representations to describe spin states
  • spin_100
  • · Replies 7 ·
Replies
7
Undergrad How to get the energy eigenvalue of the Hamiltonian: H0+λp/m ?
  • Jiangwei Du
  • · Replies 5 ·
Replies
5
Undergrad What do the authors of the paper mean here exactly by path integral?
  • Andrewmiller5432
  • · Replies 6 ·
Replies
6
High School Virtual particles and Heisenberg
  • jcalises
  • · Replies 15 ·
Replies
15
Undergrad Solving the Schrodinger Equation for a particle being measured
  • physwiz222
  • · Replies 6 ·
Replies
6
Undergrad What is the energy of an atom in a magnetic trap as a function of position?
  • Malamala
  • · Replies 6 ·
Replies
6
Undergrad Entangled, mixed state with conditional entropy zero
  • greypilgrim
  • · Replies 1 ·
Replies
1
Undergrad QED Picture of static EM Fields
  • physwiz222
  • · Replies 3 ·
Replies
3
Graduate Asymptotic states in the Heisenberg and Schrödinger pictures
  • UnreliableObserver
  • · Replies 8 ·
Replies
8
Undergrad About the position of electrons (uncertainty)
  • pokespriter
  • · Replies 6 ·
Replies
6
Undergrad Question about Commutators and Uncertainty
  • physwiz222
  • · Replies 17 ·
Replies
17
Undergrad Measuring electron spin and measuring entangled electron spin
  • Athraxin
  • · Replies 12 ·
Replies
12
Undergrad Delayed Choice Quantum Eraser with altered beam splitter
  • Athraxin
  • · Replies 8 ·
Replies
8
High School [SOLVED] Regarding the Superposition of Two Plane Waves
  • Slimy0233
  • · Replies 5 ·
Replies
5
Undergrad Why is BBO the most used crystal for second-order nonlinear optics?
  • James2018
  • · Replies 1 ·
Replies
1