Varon
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Before I joined this forum. I thought there are only one intepretation and naturaly one variant.. but I learned now there are different variants to each of different interpretation. Let me mention what I learned so far these past weeks mentioning only the major variants by mostly Nobel Laurettes (subject to your additions and objections or comment)
COPENHAGEN INTERPRETATION
Variant 1: Bohr's - wave function is just knowledge of observer and observed and interactive
Variant 2: Heisenberg's - "subjective" interpretation combined with the Aristotelian notion of "potentia". He considers a particle to be "potentially present" over all regions of which the wave function psi (r) is nonzero, in some "intermediate kind of reality"
Variant 3: Schroedinger's - wave function describes some kind of physical presence
Varient 4: Einstein - wave function doesn't describe a particle.. but statistical ensemble of them
Varient 5: von Neumann - everything is quantum.. there is no division between classical and quantum object and the cut or collapse is movable
what else?
MANY WORLDS INTERPRETATION
Variant 1: Everett original idea - State are real relative to other real states
Variant 2: Dewitt - branches split after measurement
Variant 3: Everette original idea + decoherence which separate the branches
Variant 4: Albert and Louwer Many Minds - Only minds split
Variant 5: Lockwood Many minds - All minds split but all are part of one big Mind
what else?
but there are many variants to explanations of derivations of probability in Many Worlds
subvariant 1: Lev Vaidman "The probability of an outcome of a quantum experiment is proportional to the total measure of existence of all worlds with that outcome."
subvarient 2: Deutsch and Wallace "extracts Everett's artifical postulate of measure naturally from the quantum rules"
subvariant 3: Julian Barbour's "Hilbert space as containing a vast collection of snapshots rather than lines corresponding to histories"
subvariant 4: Gell-Mann and Hartle's: "Weak decoherence creates slightly different world lines that continue to interact. Strong decoherence creates steadily divergent world lines."
what else?
OBJECTIVE COLLAPSE INTERPRETATION
variant 1: GRW - collapse occurs objectively and randomly and automatically without observers intervention
variant 2: GRW with Flash (Relativistic)
variant 3: Roger Penrose GRW with gravity collapse - Collapse is caused by gravity
superposition
STATISTICAL INTERPRETATIONS
variant 1: Ballentine's - particle has well-behave positions at all times
variant 2: anti-Ballentine's - particle doesn't have well-behave positions at all times
variant 3: Pragmatists/Instrumentalists - We don't know if particle has or hasn't well-
behave positions at all times.. only care about the wave function as possibly describing an ensemble, not an individual particle
DE BROGLIE-BOHM INTERPRETATIONS
I'm just starting to study the Bohmians, What are the possible variants?
Please also mention the different variants of other interpretations I haven't mentioned.
COPENHAGEN INTERPRETATION
Variant 1: Bohr's - wave function is just knowledge of observer and observed and interactive
Variant 2: Heisenberg's - "subjective" interpretation combined with the Aristotelian notion of "potentia". He considers a particle to be "potentially present" over all regions of which the wave function psi (r) is nonzero, in some "intermediate kind of reality"
Variant 3: Schroedinger's - wave function describes some kind of physical presence
Varient 4: Einstein - wave function doesn't describe a particle.. but statistical ensemble of them
Varient 5: von Neumann - everything is quantum.. there is no division between classical and quantum object and the cut or collapse is movable
what else?
MANY WORLDS INTERPRETATION
Variant 1: Everett original idea - State are real relative to other real states
Variant 2: Dewitt - branches split after measurement
Variant 3: Everette original idea + decoherence which separate the branches
Variant 4: Albert and Louwer Many Minds - Only minds split
Variant 5: Lockwood Many minds - All minds split but all are part of one big Mind
what else?
but there are many variants to explanations of derivations of probability in Many Worlds
subvariant 1: Lev Vaidman "The probability of an outcome of a quantum experiment is proportional to the total measure of existence of all worlds with that outcome."
subvarient 2: Deutsch and Wallace "extracts Everett's artifical postulate of measure naturally from the quantum rules"
subvariant 3: Julian Barbour's "Hilbert space as containing a vast collection of snapshots rather than lines corresponding to histories"
subvariant 4: Gell-Mann and Hartle's: "Weak decoherence creates slightly different world lines that continue to interact. Strong decoherence creates steadily divergent world lines."
what else?
OBJECTIVE COLLAPSE INTERPRETATION
variant 1: GRW - collapse occurs objectively and randomly and automatically without observers intervention
variant 2: GRW with Flash (Relativistic)
variant 3: Roger Penrose GRW with gravity collapse - Collapse is caused by gravity
superposition
STATISTICAL INTERPRETATIONS
variant 1: Ballentine's - particle has well-behave positions at all times
variant 2: anti-Ballentine's - particle doesn't have well-behave positions at all times
variant 3: Pragmatists/Instrumentalists - We don't know if particle has or hasn't well-
behave positions at all times.. only care about the wave function as possibly describing an ensemble, not an individual particle
DE BROGLIE-BOHM INTERPRETATIONS
I'm just starting to study the Bohmians, What are the possible variants?
Please also mention the different variants of other interpretations I haven't mentioned.
A lot of people are insisting that the CI includes the assumption that a wavefunction describes all the properties of an individual system. If we take that to be part of the definition, then the statistical interpretations definitely do not satisfy the definition of the CI.