On Saturday, October 5, 2019 at 10:17:20 AM UTC-5, Brent wrote:
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>
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> On 10/4/2019 11:31 PM, Philip Thrift wrote:
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>
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> On Friday, October 4, 2019 at 6:22:07 PM UTC-5, Brent wrote: 
>>
>>
>> You can't deny 
>> Hilbert space and keep MWI. 
>>
>>
>> Brent 
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>>
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> QMT is neither (defined by) Hilbert space nor (MWI) many worlds.
>
>
> https://arxiv.org/pdf/1809.10427.pdf :
>
> Quantum Measure Theory (QMT) , at its basis, takes probability measure 
> theory and weakly extends it to accommodate quantum interference. Whilst 
> the usual “Hilbert space, operators and wavefunctions” formulation of 
> quantum mechanics will predict probabilities, they are restricted to 
> “operator at some time”-based events, and the theory is thus unable to 
> answer inherently spacetime questions and lacks a description without 
> observers.
>
> In contrast [to Hilbert space, operators and wavefunctions], QMT, which 
> was constructed with the spacetime model of causal sets in mind, uses 
> spacetime objects – histories – as the basis of its theory, and does not 
> feature any observer dependence or any collapse mechanic. The use of 
> histories also allows us to treat quantum and classical objects similarly, 
> keeping the theory general and applicable to many systems. What a history 
> exactly is depends
> on the system being studied, but in general it will be a full (spacetime) 
> description of a system’s evolution. ... In addition, whilst Hilbert space 
> quantum mechanics uses the Hamiltonian and collapse for its dynamics, in 
> QMT we use the quantum measure, which measures the sum of quantum 
> interferences between pairs of histories in an event. 
>
> @philipthrift
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>
> Calculate the energy levels of the hydrogen atom.
>
>
> Brent
>




QMT probabilities (quababilities) are calculated via path integrals.

https://arxiv.org/pdf/gr-qc/9401003.pdf

@philipthrift

 

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