I will be speaking on Practical Telepathy at the 2018 World Science Fiction Convention in San Jose.

I just finished the final run thru on this & am very much looking forward to this. I plan to have a lot of fun with my audience; with any luck will leave many of them touching their heads nervously on the way out, wondering if the old gray matter is quite screwed on correctly.

I’m at 2pm Friday August 17th, 2018, in case any of you are going to the WorldCon in San Jose. But if not you see can the talk as PDF, Power Point, or Keynote.

Questions, comments, suggestions, may be added to the comments — or simply sent as telepathic suggestions!

If a quantum wave function goes through a single slit in time is it diffracted or clipped?

I will be speaking at the 2018 meeting of the IARD — The International Association for Relativistic Dynamics this afternoon. Had a nice chat with the organizers & some early arrivals last night over coffee: my talk clearly a good fit to the conference.

The decisive test is what happens if you send a quantum wave function through a single slit in time, say a very fast camera shutter. If quantum mechanics does not apply (current generally accepted view), the wave function will be **clipped** — and the dispersion at a detector arbitrarily **small**. If quantum mechanics does apply (proposal here), the wave function will be **diffracted** — and the dispersion at a detector arbitrarily **great**.

I’ve uploaded the talk itself in several formats Time Dispersion in Quantum Mechanics – Keynote, Time Dispersion in Quantum Mechanics – Powerpoint, and Time Dispersion in Quantum Mechanics – PDF.

And I’ve uploaded the latest — and now complete! — version of the underlying paper Time Dispersion in Quantum Mechanics. I hope it will be a useful contribution to the literature on time and quantum mechanics. I will be uploading to the physics archive, once I’ve incorporated feedback from the conference.

Your comments very welcome!

The physics paper I’ve been working on for several years, Time & Quantum Mechanics, has been accepted for presentation at a plenary session of the 2018 meeting of the IARD — The International Association for Relativistic Dynamics. I’m very much looking forward to this: the paper should be a good fit to the IARD’s program.

#### Abstract:

In quantum mechanics the time dimension is treated as a parameter, while the three space dimensions are treated as observables. This assumption is both untested and inconsistent with relativity.

From dimensional analysis, we expect quantum effects along the time axis to be of order an attosecond. Such effects are not ruled out by current experiments. But they are large enough to be detected with current technology, if sufficiently specific predictions can be made.

To supply such we use path integrals. The only change required is to generalize the usual three dimensional paths to four. We treat the single particle case first, then extend to quantum electrodynamics.

We predict a large variety of testable effects. The principal effects are additional dispersion in time and full equivalence of the time/energy uncertainty principle to the space/momentum one. Additional effects include interference, diffraction, resonance in time, and so on.

Further the usual problems with ultraviolet divergences in QED disappear. We can recover them by letting the dispersion in time go to zero. As it does, the uncertainty in energy becomes infinite — and this in turn makes the loop integrals diverge. It appears it is precisely the assumption that quantum mechanics does not apply along the time dimension that creates the ultraviolet divergences.

The approach here has no free parameters; it is therefore falsifiable. As it treats time and space with complete symmetry and does not suffer from the ultraviolet divergences, it may provide a useful starting point for attacks on quantum gravity.

Linux & Stargates

**The talk has been rescheduled: it is now April 4th, 2018, same place: University of the Sciences, same time: 7pm.**

Some new stuff: thanks to the 7th observation of a gravitational wave, the speed of gravitational waves is now known to be the speed of light. And researchers have built a carillion using black hole frequencies as the pipes.

I’ll be doing my StarGates talk at the Philadelphia Linux meeting at the University of the Sciences this coming Wednesday.

Why StarGates & Linux?

- Both are really cool.
- Both take us to the limits of the possible.
- And both let us push the limits of the possible another half-step beyond where it is.

As to #1, if you are reading this the odds are you are already current with the cool of each.

And #2 goes without saying: Linux is an amazing work, putting the most powerful general purpose operating system in the hands of the open source community, in the hands of the world.

But #3 — extending the limits of the possible — is what I will be focusing on in my presentation: by asking questions about the impossible, we can extend the reach of the possible: get our grasp a bit closer to our reach, as the saying goes.

So March 7th, at the University of the Sciences in Philadelphia, at 8pm, great if you can make it, and if not, have your imagination hop over & have a look.

To infinity and beyond!

Tux & StarGates from Linux-Lovers

By The U.S. Printing Co., Russell-Morgan Print, Cincinnati & New York. – This image is cropped and color-balanced from the copy published by the Library of Congress, Prints & Photographs Division, uncompressed archival TIFF version (17 MB), Public Domain, https://commons.wikimedia.org/w/index.php?curid=3590811

I’ve just posted the slides from my Philcon 2017 talk Practical Telepathy: the Science & Engineering of Mind-Reading:

Talk went well: SRO & the audience & I definitely on the same wavelength! As it were…

So slides now up, some great references on the last slide, & any questions/comments please let me know!

Thanks!

John

From van Vogt’s Slan to Willis’s Crosstalk, telepathy has been a staple of science fiction. But what are the real world chances of reading another person’s mind? With MRI & PET scans we can see what images a person is thinking of, with brain implants we can help the blind to see, and—the way the science is going—we are only a half-step away from direct mind-to-mind communication. Nothing to worry about here!

I’ll be speaking at 4pm Saturday November 11th, this coming Saturday, in Crystal Ballroom Two at Philcon. Hope to see you there!

A fourth gravitational wave has been detected. Three solar masses worth of gravitational energy released, leaving a 53 solar mass black hole behind.

As I do my now more than highly polished presentation on StarGates: the Theory & Practice.

New developments, just in the last week:

- A fourth gravitational wave was detected last week, 9/27/2017. This was far more finely localized than the previous; 25 observatories are looking for signs of the event in the electromagnetic spectrum.
- And Kip Thorne — inventor of scientifically plausible StarGates — was awarded the Nobel Prize this week for his work on developing feasible gravitational wave detectors. Perhaps someday he will be even more famous as the inventor of StarGates!

So I’ve folded these in my talk & look forward to giving it tomorrow at 3pm at Capclave, the Washington DC Science Fiction Convention. If you are in the area, I hope to see you there.

PS. I will also be on a panel on Engineering in Fantasy & Science Fiction: I love it when we discuss the thermodynamics of magic & the magic of engineering!

*And a followup:*

Followed Tom Holtz at Capclave: this is always good & bad: good because it guarantees a nice crowd, bad because he is a hard act to follow. The assembled multitude was enthusiastic, always nice.

And the panel on engineering in F & SF also went well: Fran Wilde did a great job moderating, had a good supply of questions & made sure everything had a whack at each, so not the usual domination by 2 or 3 of the more talky types. Audience lively (in a good way, not in the hurled rutabagas way.)

9/3/2017: I have just posted the slides from Fosscon on slideshare. Comments, questions, problems, & buildable blueprints, all very welcome!

This coming Saturday I’ll be doing the latest revision of my StarGates talk at FossCon, the Free & Open StarS Convention!

(Pay no attention to those who assert this is the Free & Open *Source* Convention, that is a mere cover story.)

The convention is at International House in Philadelphia, starting at 9am, and is free. As to my talk:

“Call them Stargates, Jumpgates, Fargates, Hypergates or just an invitation to every pest from the far reaches of the Galaxy to visit, they would be invaluable in helping mankind break free of this solar system.

Are StarGates only a convenient plot device — or could they actually be built? Accordingly to Einstein’s Theory of General Relavity, they are possible — at least in principle.

We will discuss how to glue black holes together to build a wormhole, how to avoid the dangers of spaghettification, radiation poisoning and paradox noise, and just what would it take to build one in practice.”

My talk’s at 1pm. Hope to see you there!

And there I have you seen! There was a nice turnout (in the South America room at International House) with a lot of questions. We finished with a few minutes for additional questions, including my favorites:

*What happens if you drag a wormhole through a wormhole?*

I congratulated the questioner on the question & he just pointed at his young son sitting next, a lad clearly with a bright future as a scientist!

I had to admit I wasn’t sure, but I suspect it would be bad news for all concerned: both wormholes, and any spaceships, space stations, or space-persons nearby!

*How do you think this might actually be done?*

I focused on wormholes because that is far & away the most popular of the approaches. But if some sort of stargate were ever actually to come to fruition, I suspect a combination of the Einstein-Rosen-Podolsky (EPR) effect and the ideas behind the Krasnikov tube would be at work. The EPR effect is the spooky-action-at-a-distance Einstein objected to; the Krasnikov tube is an idea of — curiously enough — Krasnikov for laying out a tube of warped spacetime behind your slower-than-light spacecraft. You’d have to go slower-than-light while laying out the tube, but could use it for faster-than-light thereafter. And as I said in the talk, negative energy & vortices are pretty sure to be involved.

Only by purchasing mass quantities can you ensure that its deletorious effects are not too widely felt.

You may order from my co-editor Darrell Schweitzer ($24.99 + $4.00 shipping) or from me directly ($25.00 but I don’t ship) or from PSPublishing (£20.00).

My first book but Darrell’s N-th (see his wikipedia page!).

I’m rather pleased (& a bit relieved) to see it came out pretty well. All thirteen stories are good, each in their own way. And Darrell & I each did introductions. His is light-hearted & not to be taken seriously while mine is in deadly earnest.

So if you want to find out why not to use a spell-checker on the Necronomicon, or wonder what the gastronomic possibilities of Cthulhu are, look no further.

And remember, every copy you purchase saves another hapless human from an otherwise dire & unavoidable fate!

PS. And if you would like to see snippets of Darrell & myself opining on matters Lovecraftian, we were on PBS recently, in a segment from Articulate TV.

**Beware of Unexpected Doors!**

Call them Stargates, Jumpgates, Fargates, Hypergates or just an invitation to every unwanted pest from the far reaches of the Galaxy to visit, they are absolutely necessary if we are to have the glorious Science Fiction action we desperately need. *Could they actually be built?* Modern physics may permit, but: how to glue black holes together to build a wormhole, how to avoid the dangers of spaghettification, radiation poisoning and paradox noise, and just what would it take to build one in practice?

I’ve just finished revising my StarGates — the theory & practice — for Balticon. It’s a Good News/Bad News thing: Bad News: we don’t know how to build them, Good News: we can’t prove we can’t, someday!

Slides for talk now up on SlideShare; comments & questions very welcome.

Talk will be this coming Saturday, May 27, 9am at Balticon. If in the neighborhood, drop by. If not in the neighborhood, spin up a stargate & jump in!