Posted on 04/28/2017 1:16:00 PM PDT by Red Badger
UBC math and physics instructor, Ben Tippett. Credit: UBC Okanagan
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After some serious number crunching, a UBC researcher has come up with a mathematical model for a viable time machine.
Ben Tippett, a mathematics and physics instructor at UBC's Okanagan campus, recently published a study about the feasibility of time travel. Tippett, whose field of expertise is Einstein's theory of general relativity, studies black holes and science fiction when he's not teaching. Using math and physics, he has created a formula that describes a method for time travel.
"People think of time travel as something as fiction," says Tippett. "And we tend to think it's not possible because we don't actually do it. But, mathematically, it is possible."
Ever since HG Wells published his book Time Machine in 1885, people have been curious about time travel—and scientists have worked to solve or disprove the theory, he says. In 1915 Albert Einstein announced his theory of general relativity, stating that gravitational fields are caused by distortions in the fabric of space and time. More than 100 years later, the LIGO Scientific Collaboration—an international team of physics institutes and research groups—announced the detection of gravitational waves generated by colliding black holes billions of lightyears away, confirming Einstein's theory.
The division of space into three dimensions, with time in a separate dimension by itself, is incorrect, says Tippett. The four dimensions should be imagined simultaneously, where different directions are connected, as a space-time continuum. Using Einstein's theory, Tippett says that the curvature of space-time accounts for the curved orbits of the planets.
In "flat"—or uncurved—space-time, planets and stars would move in straight lines. In the vicinity of a massive star, space-time geometry becomes curved and the straight trajectories of nearby planets will follow the curvature and bend around star.
"The time direction of the space-time surface also shows curvature. There is evidence showing the closer to a black hole we get, time moves slower," says Tippett. "My model of a time machine uses the curved space-time—to bend time into a circle for the passengers, not in a straight line. That circle takes us back in time."
While it is possible to describe this type of time travel using a mathematical equation, Tippett doubts that anyone will ever build a machine to make it work.
"HG Wells popularized the term 'time machine' and he left people with the thought that an explorer would need a 'machine or special box' to actually accomplish time travel," Tippett says. "While is it mathematically feasible, it is not yet possible to build a space-time machine because we need materials—which we call exotic matter—to bend space-time in these impossible ways, but they have yet to be discovered."
For his research, Tippett created a mathematical model of a Traversable Acausal Retrograde Domain in Space-time (TARDIS). He describes it as a bubble of space-time geometry which carries its contents backward and forwards through space and time as it tours a large circular path. The bubble moves through space-time at speeds greater than the speed of light at times, allowing it to move backward in time.
"Studying space-time is both fascinating and problematic. And it's also a fun way to use math and physics," says Tippett. "Experts in my field have been exploring the possibility of mathematical time machines since 1949. And my research presents a new method for doing it."
Tippett's research was recently published in the IOPscience journal Classical and Quantum Gravity.
Explore further: How Einstein could help unlock the mysteries of space travel
More information: Benjamin K Tippett et al. Traversable acausal retrograde domains in spacetime, Classical and Quantum Gravity (2017). DOI: 10.1088/1361-6382/aa6549
Yeah, I was just thinking of all those missed opportunities...
“Hey young DannyTN. I’m you. Ask Joy out. You know she likes you and she is going to be stunning in a few years.
I saw this article last year.
The past happened and the future hasn’t.
Yes, every atom of your body existed a billion years ago, just somewhere else. If you travel back or forward in time, you would essentially be ‘creating’ mass that did not exist previously in that universe, which is a no-no..............
Last I saw, if a person was suddenly thrown into space it would only take about 90 seconds for them to freeze.
Everything is going forward in time though.
I do agree with you that the "replicator" aspect is forbidden. Still made for a good story.
A second faster-than-light neutrino walks into the same bar.
The third faster-than-light neutrino ducks...
I’m assuming that the Time traveler and his/her machine would be akin to a self-contained small spaceship, with a limited amount of oxygen and environmental controls.............
Time is a derivative function of state change which progresses relative to E within the inertial frame(s) in which it is observed.
And “Time Travel” is bullshyte.
It’s all relative...................
Ahh, yes. Time will tell.
I would tell my young self, “Forget all those losers you hang out with! There’s money to be made!”..................
T'were it possible, that would have already happened.
~But~
You can't travel through something that isn't there.
Tardis has already been done, this is so re-tardis.
Reminds me of a girl in my College Bio study group. We all assemble for the evening and she’s there maybe 2 minutes max into the session.
She announces “I’ve got this” and heads out on a date. I advised she stay and spend the probably 2, maybe 3 hours with the group, which was 6-8 of us. Professor was used to teaching doctors so he had fairly-difficult tests.
She scoffed. She left. She got slaughtered by the exam, of course.
Don’t ever go Full Re-Tardis!..............
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