Time Travel Is Possible Using Closed Time-Like Curves – Physics Professor Says

Cynthia McKanzie – MessageToEagle.com – A physics Professor has made a bold statement. When asked if we can travel much further into the future, he responded, “absolutely”, and added we can build a time machine.

It will take a long time before scientists can agree on whether time travel is possible or not. Several scientists have rejected the idea we can travel back or forward in time, but there are also those who think time travel can be achieved.

Will we ever be able to travel in time? Credit: Public Domain

Time travel is today nothing more than a science-fiction entertainment, but can such journeys  become reality one day? It’s hard to say, but prominent scientists have discussed various time travel scenarios.

We may not think about it, but we’re already time travelers. As Gaurav Khanna, Professor of Physics, at the University of Massachusetts Dartmouth says, we are always moving into the future one second at a time.

So, what, you say? This is hardly the definition of time travel as we are familiar with from science fiction, is, it? Of course, not, but Professor Khanna explains we can move much further and faster in time, if we can move close to the speed of light.

“If we could travel close to the speed of light, or in the proximity of a black hole, time would slow enabling us to travel arbitrarily far into the future. The really interesting question is whether we can travel back into the past, ”Professor Khanna says.

In his science paper he also described how we can build a time machine.

Professor Khanna’s time travel solution is based on the use of CTCs, closed time-like curves that are time machines.

As Professor Khanna states, “Einstein’s general theory of relativity allows for the possibility of warping time to such a high degree that it actually folds upon itself, resulting in a time loop.

Imagine you’re traveling along this loop; that means that at some point, you’d end up at a moment in the past and begin experiencing the same moments since, all over again – a bit like deja vu, except you wouldn’t realize it. Such constructs are often referred to as “closed time-like curves” or CTCs in the research literature, and popularly referred to as “time machines.”

Here we see a time loop. Green shows the short way through wormhole. Red shows the long way through normal space. Since the travel time on the green path could be very small compared to the red, a wormhole can allow for the possibility of time travel. Credit: Panzi, CC BY-SA

Time machines are a byproduct of effective faster-than-light travel schemes and understanding them can improve our understanding of how the universe works.”

Professor Khanna’s theory doesn’t differ much from previous models related to time machines.

As discussed earlier on MessageToEagle.com, Kip S. Thorne, an American theoretical physicist and Nobel Prize Winner has come up with a theoretical method for time travel. His solution involves black holes, a wormhole, and the stretching of space and time.

Thorne said, time travel could be possible if we could use a wormhole whose two ends are respectively situated near Earth and the surface of a black hole. A black hole is a special region of space from which no matter or radiation can escape. A black hole is a result of the extreme curvature of space by a massive compact body.

Previous studies have revealed that black holes stretch and distort space-time, which means that time moves slower inside these huge black monsters.

We have 100 million black holes in our galaxy, perhaps one of those could help us achieve time travel?

Time travel can maybe be achieved theoretically but putting all those ideas together and make science fiction real, can be problematic. For one thing, the biggest problem with moving back through time is it can only be achieved if an object has an infinite mass. Another problem we face are all those paradoxes that must somehow be solved.

“The general conclusion that has emerged from previous research, including Thorne’s and Hawking’s, is that nature forbids time loops.

This is perhaps best explained in Hawking’s ‘Chronology Protection Conjecture’, which essentially says that nature doesn’t allow for changes to its past history, thus sparing us from the paradoxes that can emerge if time travel were possible,” Professor Khanna explains.

To put this in simpler terms. This law of of nature would prevent a time traveler from going to the past and stopping their own birth, thus stopping their future existence and ever going back in time.

See also:

RAF Pilot Goddard’s Mysterious Time Slip And Journey To The Future

Time Travel Is Possible Through Entangled Wormholes But We Cannot Return From The Past To The Present – Astrophysicist Says

Mystery Of Sid Hurwich And His Time-Altering Machine That Could ‘Freeze Time

More About Time Travel

Before a time machine could be built to test the law of time travel, it would first need to harness an infinite amount of mass.

“Depending on the details, different physical phenomena may intervene to prevent closed time-like curves from developing in physical systems. The most common is the requirement for a particular type of “exotic” matter that must be present in order for a time loop to exist. Loosely speaking, exotic matter is matter that has negative mass. The problem is negative mass is not known to exist in nature,” Professor Khanna explains.

Caroline Mallary, One of his student has published a new model for a time machine in the journal Classical & Quantum Gravity. This new model does not require any negative mass exotic material and offers a very simple design.

Her “model consists of two super long cars – built of material that is not exotic, and have positive mass – parked in parallel. One car moves forward rapidly, leaving the other parked. Mallary was able to show that in such a setup, a time loop can be found in the space between the cars.”

It sounds easy enough, but yes, there is another problem we encounter. According to Professor Khanna, “Mallary’s model requires that the center of each car has infinite density. That means they contain objects – called singularities – with an infinite density, temperature and pressure. Moreover, unlike singularities that are present in the interior of black holes, which makes them totally inaccessible from the outside, the singularities in Mallary’s model are completely bare and observable, and therefore have true physical effects.

Physicists don’t expect such peculiar objects to exist in nature either. So, unfortunately a time machine is not going to be available anytime soon. However, this work shows that physicists may have to refine their ideas about why closed time-like curves are forbidden.”

It’s a good thing all time travel fans still have books and movies, because it’s doesn’t look like we will be visiting the future or the past any time soon.

Written by Cynthia McKanzie – MessageToEagle.com Staff Writer

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