Re: Quantum Computing News

Chris Monroe [http://iontrap.umd.edu ]: "You can either have really clean qubits that are hard to build but you don't need too many of them, or you can have crappy qubits and you need a gazillion of them." https://www.afr.com/technology/why-google-wasn-t-really-t

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On Monday, September 30, 2019 at 9:53:12 PM UTC-5, Brent wrote: > > > > In the case of *Everett'*s relative state, it suggested decoherence and > *quantum > Darwinism *which I think have gone a long way to answering the questions > of preferred pointer states and the Heisenberg cut. > > Brent

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

> On 1 Oct 2019, at 07:37, 'Brent Meeker' via Everything List > wrote: > > > > On 9/30/2019 9:52 PM, Bruce Kellett wrote: >> >> I haven't read Carroll's book, it isn't released in Australia until >> November. I would be interested to see if he has a better account of Bell >> non-locality

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On Tue, Oct 1, 2019 at 9:38 PM Bruno Marchal wrote: > > On 1 Oct 2019, at 07:37, 'Brent Meeker' via Everything List < > everything-list@googlegroups.com> wrote: > > > > On 9/30/2019 9:52 PM, Bruce Kellett wrote: > >> > >> I haven't read Carroll's book, it isn't released in Australia until > Novem

Re: Observation versus assumption

> On 30 Sep 2019, at 18:11, John Clark wrote: > > On Mon, Sep 30, 2019 at 11:11 AM Bruno Marchal > wrote: > > > Now, if you know a members of the national Academy of Sciences who would > > have found an error in my thesis, different from the minor (and less minor)

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On Mon, Sep 30, 2019 at 6:53 PM Bruce Kellett wrote: >*many MWI enthusiasts claim that many worlds does away with Bell > non-locality -- giving a purely local explanation for violations of the > Bell inequalities. This, to my mind, was the last gasp of MWI realists* > MWI realists? How can Many

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On Tuesday, October 1, 2019 at 8:23:02 AM UTC-5, John Clark wrote: > > On Mon, Sep 30, 2019 at 6:53 PM Bruce Kellett > wrote: > > >*many MWI enthusiasts claim that many worlds does away with Bell >> non-locality -- giving a purely local explanation for violations of the >> Bell inequalities. T

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On 01-10-2019 15:43, Philip Thrift wrote: On Tuesday, October 1, 2019 at 8:23:02 AM UTC-5, John Clark wrote: On Mon, Sep 30, 2019 at 6:53 PM Bruce Kellett wrote: _many MWI enthusiasts claim that many worlds does away with Bell non-locality -- giving a purely local explanation for violations

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On 9/30/2019 11:06 PM, Bruce Kellett wrote: You say the light carrying the information isn't coherent, but it's not just the light that carries the information; it's information encoded in the wave function of the environment. That information encoded in the wave function

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On Tuesday, October 1, 2019 at 10:04:22 AM UTC-5, smitra wrote: > > So, the best way to interpret the > multiverse is to simply assume that all possible time snaps of universes > exist as timeless entities. In classical physics, there is a one > parameter family of parallel worlds with the sa

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On 10/1/2019 4:38 AM, Bruno Marchal wrote: On 1 Oct 2019, at 07:37, 'Brent Meeker' via Everything List wrote: On 9/30/2019 9:52 PM, Bruce Kellett wrote: I haven't read Carroll's book, it isn't released in Australia until November. I would be interested to see if he has a better account

How Many Universes Are There?

How Many Universes Are There? John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsu

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On Tue, 1 Oct 2019 at 19:24, Philip Thrift wrote: > > > On Tuesday, October 1, 2019 at 10:04:22 AM UTC-5, smitra wrote: >> >> So, the best way to interpret the >> multiverse is to simply assume that all possible time snaps of universes >> exist as timeless entities. In classical physics, there i

Re: How Many Universes Are There?

On Tuesday, October 1, 2019 at 1:30:12 PM UTC-5, John Clark wrote: > > How Many Universes Are There? > > > John K Clark > The number of these universes is based on the phenomenological match with 63e-folds where e^{63} ~ 10^{26} inflation in the dura

Re: Inflation

On Sunday, September 29, 2019 at 8:53:35 AM UTC-6, Alan Grayson wrote: > > Bruce considers that inflation remains somewhat speculative; that it's a > solution looking for a problem to solve. So my questions are as follows: > 1), does inflation solve the homogeneity problem; namely, that the >

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On Tue, Oct 1, 2019 at 11:23 PM John Clark wrote: > On Mon, Sep 30, 2019 at 6:53 PM Bruce Kellett > wrote: > > >*many MWI enthusiasts claim that many worlds does away with Bell >> non-locality -- giving a purely local explanation for violations of the >> Bell inequalities. This, to my mind, was

Re: Inflation

On Wed, Oct 2, 2019 at 8:40 AM Alan Grayson wrote: > On Sunday, September 29, 2019 at 8:53:35 AM UTC-6, Alan Grayson wrote: >> >> Bruce considers that inflation remains somewhat speculative; that it's a >> solution looking for a problem to solve. So my questions are as follows: >> 1), does inflat

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On Wed, Oct 2, 2019 at 3:12 AM 'Brent Meeker' via Everything List < everything-list@googlegroups.com> wrote: > On 9/30/2019 11:06 PM, Bruce Kellett wrote: > > You say the light carrying the >> information isn't coherent, but it's not just the light that carries the >> information; it's information

Re: Inflation

On Tuesday, October 1, 2019 at 4:59:42 PM UTC-6, Bruce wrote: > > On Wed, Oct 2, 2019 at 8:40 AM Alan Grayson > wrote: > >> On Sunday, September 29, 2019 at 8:53:35 AM UTC-6, Alan Grayson wrote: >>> >>> Bruce considers that inflation remains somewhat speculative; that it's a >>> solution lookin

Re: Inflation

On Tuesday, October 1, 2019 at 6:09:17 PM UTC-6, Alan Grayson wrote: > > > > On Tuesday, October 1, 2019 at 4:59:42 PM UTC-6, Bruce wrote: >> >> On Wed, Oct 2, 2019 at 8:40 AM Alan Grayson wrote: >> >>> On Sunday, September 29, 2019 at 8:53:35 AM UTC-6, Alan Grayson wrote: Bruce consid

Re: Inflation

On Tuesday, October 1, 2019 at 6:33:32 PM UTC-6, Alan Grayson wrote: > > > > On Tuesday, October 1, 2019 at 6:09:17 PM UTC-6, Alan Grayson wrote: >> >> >> >> On Tuesday, October 1, 2019 at 4:59:42 PM UTC-6, Bruce wrote: >>> >>> On Wed, Oct 2, 2019 at 8:40 AM Alan Grayson wrote: >>> On Sunda

Re: Sean Carroll: Universe a 'tiny sliver' of all there is

On 10/1/2019 4:55 PM, Bruce Kellett wrote: On Wed, Oct 2, 2019 at 3:12 AM 'Brent Meeker' via Everything List > wrote: On 9/30/2019 11:06 PM, Bruce Kellett wrote: You say the light carrying the information isn't coherent, but it's

Re: How Many Universes Are There?

On Tuesday, October 1, 2019 at 1:30:12 PM UTC-5, John Clark wrote: > > How Many Universes Are There? > > > John K Clark > Only one, at last count. Scientists should not play with maths like children with matches. [image: Image]

Re: How Many Universes Are There?

A physicist goes off to a conference. After a week his suit’s gotten  soiled and crumpled, so he goes out to look for a dry cleaner. Walking down the main street of town, he comes upon a store with a lot of signs out front. One of them says “Dry Cleaning.” So he goes in with his dirty suit and

Re: How Many Universes Are There?

That is a great story: *Conversations on Mind, Matter, and Mathematics* Jean-Pierre Changeux, Alain Connes https://books.google.com/books?id=QnBdhJbfqOAC&pg=PA7&lpg=PA7 @philipthrift On Wednesday, October 2, 2019 at 12:10:54 AM UTC-5, Brent wrote: > > A physicist goes off to a conference. Aft