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Quantum Interpretations and Foundations Forum

Join discussion regarding the different quantum interpretations and foundations. These discussions present some unique challenges since they deal with matters for which there is not an established "right" answer.

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Undergrad What is the POVM generalization of Born's rule for quantum measurements?

A. Neumaier
Dec 23, 2019 · Replies 48 · Jan 21, 2020

2

Replies: 48

Graduate Schrodinger's Cat and The Universe

entropy2information
Jan 23, 2019 · Replies 76 · Jan 19, 2020

3

Replies: 76

Undergrad New interpretation of quantum mechanics

billllib
Jan 18, 2020 · Replies 8 · Jan 18, 2020

Replies: 8

Undergrad On the relation between physics and philosophy

A. Neumaier
Dec 29, 2019 · Replies 204 · Jan 18, 2020

7

Replies: 204

Graduate The ontology problem of thermal interpretation

Demystifier
Jan 9, 2020 · Replies 6 · Jan 11, 2020

Replies: 6

Graduate Is anything possible in the many worlds interpretation?

IvicaPhysics
Nov 30, 2016 · Replies 12 · Jan 9, 2020

Replies: 12

Undergrad Did Schrödinger himself take his "Cat Experiment" seriously?

Suekdccia
Dec 29, 2019 · Replies 11 · Jan 5, 2020

Replies: 11

Undergrad QM through stochastic optimization on spacetimes

fresh_42
Dec 31, 2019 · Replies 2 · Jan 3, 2020

Replies: 2

Graduate What is von Neumann's branching of possible worlds?

Suekdccia
Dec 16, 2019 · Replies 3 · Dec 31, 2019

Replies: 3

Undergrad Questions about QFT and the reality of subatomic particles

Quantum Alchemy
Dec 30, 2019 · Replies 6 · Dec 31, 2019

Replies: 6

Undergrad Questions on the Bohmian mechanics interpretation for instrumentalists

kurt101
Dec 21, 2019 · Replies 13 · Dec 31, 2019

Replies: 13

Undergrad Does MWI Agree on Measurement Apparatus Pointer?

entropy1
Dec 25, 2019 · Replies 18 · Dec 31, 2019

Replies: 18

Undergrad Did de Broglie contribute later to pilot wave theory?

Minnesota Joe
Nov 14, 2019 · Replies 5 · Dec 21, 2019

Replies: 5

Graduate The Combination Of Philosophy And Quantum Physics

Chris Nimmons
Dec 18, 2019 · Replies 3 · Dec 18, 2019

Replies: 3

Undergrad Bohmian mechanics and special relativity

kurt101
Nov 28, 2019 · Replies 37 · Dec 15, 2019

2

Replies: 37

Graduate Is the past in MWI unambiguous?

entropy1
Oct 28, 2019 · Replies 20 · Dec 15, 2019

Replies: 20

Undergrad Is Entanglement Properly Defined in Bohr's Idea of Complementarity?

bhobba
Oct 11, 2019 · Replies 52 · Dec 10, 2019

2

Replies: 52

Undergrad Macroscopicity and the measurement problem

EPR
Dec 7, 2019 · Replies 29 · Dec 10, 2019

Replies: 29

Graduate Does QED Originate from Non-Relativistic Systems?

A. Neumaier
Jan 14, 2017 · Replies 185 · Dec 8, 2019

7

Replies: 185

Graduate When does the wavefunction wavelength equal the De Broglie wavelength?

etotheipi
Dec 7, 2019 · Replies 2 · Dec 7, 2019

Replies: 2

Undergrad Double slit mystery in relation to holography and the single slit?

Zelebg
Nov 18, 2019 · Replies 43 · Dec 4, 2019

2

Replies: 43

Undergrad Is Reality Real? Examining the MWI Theory

entropy1
Oct 7, 2019 · Replies 25 · Dec 4, 2019

Replies: 25

Undergrad Thermal interpretation and EPR experiment

kurt101
Nov 30, 2019 · Replies 1 · Dec 2, 2019

Replies: 1

Undergrad Superposition of branches in MWI

entropy1
Nov 25, 2019 · Replies 2 · Nov 25, 2019

Replies: 2

Undergrad Can we accurately determine the trajectory of an electron using a SG detector?

entropy1
Nov 23, 2019 · Replies 3 · Nov 25, 2019

Replies: 3

Undergrad Science Lay Person Question about Many Worlds Theory

Jmacquar
Nov 20, 2011 · Replies 2 · Nov 23, 2019

Replies: 2

Undergrad A Copenhagen solution of the black hole singularity problem

Demystifier
Nov 21, 2019 · Replies 8 · Nov 22, 2019

Replies: 8

Graduate Why are the quantum fields considered ontological?

ilper
Nov 19, 2019 · Replies 18 · Nov 21, 2019

Replies: 18

Undergrad New review on decoherence by Schlosshauer

A. Neumaier
Oct 27, 2019 · Replies 2 · Nov 18, 2019

Replies: 2

Undergrad Interpretations of QM vs. statistical physics as an "interpretation"?

Aidyan
Nov 10, 2019 · Replies 9 · Nov 13, 2019

Replies: 9

Undergrad MWI: Are There Worlds Where the Rules Don't Apply?

WWGD
Nov 8, 2019 · Replies 12 · Nov 9, 2019

Replies: 12

Graduate How does the thermal interpretation explain Stern-Gerlach?

PeterDonis
Mar 31, 2019 · Replies 94 · Nov 8, 2019

4

Replies: 94

Undergrad A question about Many Worlds and my Remote Control

Quantum Alchemy
Nov 7, 2019 · Replies 18 · Nov 8, 2019

Replies: 18

Undergrad Why can't there be a Universal Interpretation of Quantum Mechanics?

Quantum Alchemy
Nov 2, 2019 · Replies 14 · Nov 7, 2019

Replies: 14

Undergrad How does Classical Physics explain Quantum Entanglement?

Quantum Alchemy
Nov 7, 2019 · Replies 5 · Nov 7, 2019

Replies: 5

Undergrad Consistency of Bohmian mechanics

Thors10
Oct 24, 2019 · Replies 92 · Nov 6, 2019

4

Replies: 92

Graduate Many Worlds and the Measurement of an Electron

PhyCurious
Nov 5, 2019 · Replies 4 · Nov 5, 2019

Replies: 4

Undergrad Does the superposition have a weight?

timmdeeg
Nov 4, 2019 · Replies 13 · Nov 5, 2019

Replies: 13

Undergrad Does EPR definitely rule out locality?

greypilgrim
Nov 1, 2019 · Replies 17 · Nov 5, 2019

Replies: 17

Undergrad Orthogonal eigenvectors and measurement

entropy1
Nov 2, 2019 · Replies 10 · Nov 4, 2019

Replies: 10

Against "interpretation" - Comments

Demystifier
Jan 30, 2019 · Replies 343 · Nov 3, 2019

12

Replies: 343

Undergrad Danger for the Many-Worlds Interpretation?

timmdeeg
Oct 9, 2019 · Replies 313 · Nov 2, 2019

11

Replies: 313

Graduate Many worlds, observer and Entropy

Hawzhin Blanca
Oct 31, 2019 · Replies 3 · Nov 1, 2019

Replies: 3

Undergrad Can we copy information using reversible operations?

zonde
Oct 31, 2019 · Replies 1 · Oct 31, 2019

Replies: 1

Graduate Is the Quantum/Classical Boundary the most important question in Physics?

Quantum Alchemy
Oct 19, 2019 · Replies 135 · Oct 30, 2019

5

Replies: 135

Undergrad Have We Got What Bohr Thought Wrong

bhobba
Oct 27, 2019 · Replies 2 · Oct 28, 2019

Replies: 2

Undergrad Is Einstein Causality Proven in Preferred Frame SR?

entropy1
Oct 22, 2019 · Replies 35 · Oct 28, 2019

2

Replies: 35

Graduate Why didn't radioactive decay probabilities cause the same uproar as QM

BruteForce1
Oct 25, 2019 · Replies 50 · Oct 28, 2019

2

Replies: 50

Graduate Counterfactual Definiteness and MWI in Wiki

TunnelingthuWorlds
Oct 24, 2019 · Replies 21 · Oct 25, 2019

Replies: 21

Undergrad Is QM Deterministic in MWI and Time Reversible?

entropy1
Oct 13, 2019 · Replies 34 · Oct 22, 2019

2

Replies: 34

Graduate The key to unifying the theories of the very large and the very small

physical
Oct 12, 2019 · Replies 11 · Oct 21, 2019

Replies: 11

Graduate Realism from Locality? Bell's Theorem & Nonlocality in QM

Demystifier
Jul 1, 2019 · Replies 226 · Oct 20, 2019

8

Replies: 226

Insights What Are Bell States and Their Role in Spin Angular Momentum Conservation?

RUTA
Oct 18, 2019 · Replies 0 · Oct 18, 2019

Replies: 0

Undergrad What exactly is Weizsäcker's ur-alternatives theory?

Suekdccia
Jun 12, 2018 · Replies 7 · Oct 18, 2019

Replies: 7

Undergrad Sean Carroll podcast on many worlds interpretation

pinball1970
Sep 22, 2019 · Replies 120 · Oct 8, 2019

5

Replies: 120

Undergrad Do Hidden Variables include sub-structures?

hwpage
Sep 28, 2019 · Replies 50 · Oct 6, 2019

2

Replies: 50

Undergrad Necessity of Complex Numbers in Quantum Mechanics

fresh_42
Sep 2, 2019 · Replies 33 · Oct 4, 2019

2

Replies: 33

Graduate Authorities in Science: High Reputation Journals and Books

A. Neumaier
Sep 14, 2019 · Replies 43 · Oct 4, 2019

2

Replies: 43

Undergrad What did Omnès mean with this?

Suekdccia
Oct 2, 2019 · Replies 2 · Oct 2, 2019

Replies: 2

Undergrad A simple explanation of the Born rule?

jcap
Sep 25, 2019 · Replies 13 · Sep 26, 2019

Replies: 13

Graduate What does MWI mean for our existing universe?

BrettSinclair
Sep 25, 2019 · Replies 2 · Sep 25, 2019

Replies: 2

Undergrad Thermal interpretation and Bell's inequality

N88
Sep 11, 2019 · Replies 63 · Sep 20, 2019

3

Replies: 63

Undergrad Questions about ensemble interpretation of QM

soothsayer
Sep 19, 2019 · Replies 3 · Sep 20, 2019

Replies: 3

Undergrad More on the thermal interpretation

A. Neumaier
Apr 27, 2019 · Replies 24 · Sep 14, 2019

Replies: 24

Undergrad Does a measurement setup determine the reality of spin measurement outcomes?

entropy1
Sep 1, 2019 · Replies 225 · Sep 13, 2019

8

Replies: 225

Graduate Weinberg on the measurement problem

A. Neumaier
Aug 23, 2019 · Replies 61 · Sep 12, 2019

3

Replies: 61

Undergrad Polarization in Bohmian mechanics

A. Neumaier
Aug 31, 2019 · Replies 39 · Sep 10, 2019

2

Replies: 39

Graduate The thermal interpretation and measurement

vanhees71
Sep 6, 2019 · Replies 17 · Sep 9, 2019

Replies: 17

Graduate Improbability of the Many-Worlds Interpretation?

CynicusRex
Mar 5, 2017 · Replies 94 · Sep 5, 2019

4

Replies: 94

Undergrad A variation of the Multiple World Interpretation

Buzz Bloom
Sep 4, 2019 · Replies 3 · Sep 5, 2019

Replies: 3

Graduate Bohmian mechanics for instrumentalists and quantum measurement

microsansfil
Aug 29, 2019 · Replies 16 · Aug 31, 2019

Replies: 16

Graduate Wigner's Friend and Incompatibility

DarMM
Aug 26, 2019 · Replies 59 · Aug 30, 2019

2

Replies: 59

Undergrad Quantum Correlations without Many Worlds or Determinism

msumm21
Aug 18, 2019 · Replies 14 · Aug 29, 2019

Replies: 14

Graduate Does Feynman's path integral ignore alternative histories?

Suekdccia
Aug 27, 2019 · Replies 1 · Aug 27, 2019

Replies: 1

Graduate Does Bohmian Mechanics yield the existence of a multiverse?

Suekdccia
Aug 20, 2019 · Replies 13 · Aug 23, 2019

Replies: 13

Graduate A Realization of a Basic Wigner's Friend Type Experiment

PeterDonis
Mar 15, 2019 · Replies 237 · Aug 22, 2019

8

Replies: 237

Undergrad "Knowledge" in Psi-Epistemic Interpretation Fundamental or Emergent?

lucas_
Aug 20, 2019 · Replies 3 · Aug 22, 2019

Replies: 3

Undergrad What is really that density matrix in QM?

Jamister
Aug 9, 2019 · Replies 127 · Aug 16, 2019

5

Replies: 127

Undergrad Why randomness means incomplete understanding

A. Neumaier
Jul 25, 2019 · Replies 106 · Aug 15, 2019

4

Replies: 106

Graduate Is the concept of "wave function collapse" obsolete?

Sophrosyne
Aug 1, 2019 · Replies 137 · Aug 14, 2019

5

Replies: 137

Graduate Could MWI create universes with fundamentally different physical laws?

Suekdccia
Aug 7, 2019 · Replies 51 · Aug 11, 2019

2

Replies: 51

Undergrad Can the Many Worlds interpretation state the Born Rule as a postulate?

JG11
Oct 18, 2018 · Replies 8 · Aug 7, 2019

Replies: 8

Graduate Born's rule for the QED electron violates causality

A. Neumaier
Aug 3, 2019 · Replies 11 · Aug 6, 2019

Replies: 11

Undergrad What makes the interpretations of Quantum Mechanics so important?

timmdeeg
Jul 22, 2019 · Replies 168 · Aug 5, 2019

6

Replies: 168

Undergrad Confusion about the thermal interpretation's account of measurement

nicf
Jun 27, 2019 · Replies 72 · Aug 5, 2019

3

Replies: 72

Undergrad Numerical simulations in Bohmian mechanics

A. Neumaier
Apr 28, 2019 · Replies 3 · Jul 30, 2019

Replies: 3

Undergrad A new insight from the Frauchiger and Renner paper affecting MWI

Quanundrum
Jul 23, 2019 · Replies 27 · Jul 25, 2019

Replies: 27

Graduate Soft photons and the ETH interpretation of QM

DrDu
Jul 16, 2019 · Replies 3 · Jul 16, 2019

Replies: 3

Undergrad Qbism vs Copenhagen: What is the Difference?

msumm21
Jul 11, 2019 · Replies 11 · Jul 13, 2019

Replies: 11

Undergrad Quantum Interpretations of this optical effect

andresB
Jul 4, 2019 · Replies 5 · Jul 6, 2019

Replies: 5

Undergrad MWI -- Infinite number of worlds?

entropy1
Apr 14, 2019 · Replies 33 · Jun 27, 2019

2

Replies: 33

Graduate How momentum measurement is defined in Pilot Wave interpretation?

MichPod
Jun 19, 2019 · Replies 3 · Jun 25, 2019

Replies: 3

Undergrad Interpretation of QM in the Heisenberg Picture

Federation 2005
Jun 2, 2019 · Replies 34 · Jun 15, 2019

2

Replies: 34

Graduate Relation between Bohm's Interpretation and Implicate order?

Suekdccia
Jun 6, 2019 · Replies 1 · Jun 7, 2019

Replies: 1

Graduate Bohr's contribution to the Copenhagen interpretation

mollwollfumble
May 30, 2019 · Replies 18 · Jun 6, 2019

Replies: 18

Graduate QM Interpretations as applied to QFT

charters
May 28, 2019 · Replies 3 · May 29, 2019

Replies: 3

Undergrad Was Lee Smolin Unaware of Decoherence's Role in Copenhagen Interpretation?

jlcd
May 23, 2019 · Replies 21 · May 24, 2019

Replies: 21

Graduate Smolin: Realistic and anti-realistic interpretations of QM

Auto-Didact
May 12, 2019 · Replies 115 · May 20, 2019

4

Replies: 115

Graduate Schrodinger's Cat and the thermal interpretation

Demystifier
Apr 15, 2019 · Replies 45 · May 11, 2019

2

Replies: 45

Graduate Proof that the thermal interpretation of QM is wrong

Demystifier
Apr 12, 2019 · Replies 59 · May 11, 2019

2

Replies: 59

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Quantum Interpretations

Welcome to the Quantum Interpretations forum!

Discuss the foundations of Quantum Mechanics as a theory structure and different published interpretations of Quantum Mechanics.

Interpretations of quantum mechanics are a way to explain how the mathematical theory of quantum mechanics "corresponds" to reality.

These discussions present unique challenges since they deal with matters for which there is not an established "right" answer that has been confirmed by experiment and is generally accepted by scientists in the field. As a result, such discussions do not usually reach a fairly quick resolution, and often do not reach a resolution at all.

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