Re: Measuring a system in a superposition of states vs in a mixed state

2018-11-18 Thread Philip Thrift
On Sunday, November 18, 2018 at 3:20:47 PM UTC-6, agrays...@gmail.com wrote: > > > > On Sunday, November 18, 2018 at 9:14:25 PM UTC, Philip Thrift wrote: >> >> >> >> On Sunday, November 18, 2018 at 11:49:57 AM UTC-6, agrays...@gmail.com >> wrote: >>> >>> >>> *For the simple case of two histories

Re: Measuring a system in a superposition of states vs in a mixed state

2018-11-18 Thread agrayson2000
On Sunday, November 18, 2018 at 9:14:25 PM UTC, Philip Thrift wrote: > > > > On Sunday, November 18, 2018 at 11:49:57 AM UTC-6, agrays...@gmail.com > wrote: >> >> >> *For the simple case of two histories, presumably of particles, how does >> Feynman introduce interference? What's the conceptual

Re: Measuring a system in a superposition of states vs in a mixed state

2018-11-18 Thread Philip Thrift
On Sunday, November 18, 2018 at 11:49:57 AM UTC-6, agrays...@gmail.com wrote: > > > *For the simple case of two histories, presumably of particles, how does > Feynman introduce interference? What's the conceptual framework for > interference among or between histories? TIA, AG * > >> >> Attach

Re: Measuring a system in a superposition of states vs in a mixed state

2018-11-18 Thread agrayson2000
On Thursday, November 15, 2018 at 7:37:58 PM UTC, Brent wrote: > > > > On 11/14/2018 11:23 PM, Philip Thrift wrote: > > > > On Wednesday, November 14, 2018 at 6:55:36 PM UTC-6, agrays...@gmail.com > wrote: >> >> >> >> On Wednesday, November 14, 2018 at 10:20:09 PM UTC, Pierz wrote: >>> >>> Obv

Re: Coherent states of a superposition

2018-11-18 Thread agrayson2000
On Saturday, November 17, 2018 at 7:39:14 PM UTC, agrays...@gmail.com wrote: > > If you write a superposition as a sum of eigenstates, why is it important, > or relevant, or even true that the component states are coherent since > eigenstates with distinct eigenvalues are orthogonal. This means

Re: Measuring a system in a superposition of states vs in a mixed state

2018-11-18 Thread agrayson2000
On Sunday, November 18, 2018 at 12:19:20 PM UTC, Bruno Marchal wrote: > > > On 16 Nov 2018, at 15:38, agrays...@gmail.com wrote: > > > > On Friday, November 16, 2018 at 10:14:32 AM UTC, scerir wrote: >> >> >> Il 16 novembre 2018 alle 10.19 agrays...@gmail.com ha scritto: >> >> >> >> On Thursday

Re: Measuring a system in a superposition of states vs in a mixed state

2018-11-18 Thread Bruno Marchal
> On 16 Nov 2018, at 15:38, agrayson2...@gmail.com wrote: > > > > On Friday, November 16, 2018 at 10:14:32 AM UTC, scerir wrote: > > >> Il 16 novembre 2018 alle 10.19 agrays...@gmail.com ha scritto: >> >> >> >> On Thursday, November 15, 2018 at 2:14:48 PM UTC, scerir wrote: >> >> >>> I