olisivatko madon reijät mahdollisia jos eksoottinen aine löydettäisiin kvanttigravitaation valmistuttua?en ole kunnolla perehtynyt vielä aiheeseen mutta aion perehtyä joten olisin kiitollinen jos valaisisitte minua.

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Thornen ja muiden madonrei'issä on tosiaankin ollut ongelmana reiän vakauttaminen ja auki pitäminen, johon on tarvittu ns eksoottista ainetta negatiivisella massa/energialla.

Mutta viime vuosina on myös kehitetty madonreikiä, joiden vakauttamiseksi ei eksoottista ainetta tarvita. Tällainen on Sergei Krasnikovin tyhjiön kvanttifluktuaatioita hyödyntävä madonreikä. Sovellus tästä on Krasnikovin putki, yksisuuntainen superluminaalinen madonreikää perässään tekevä raketti, jolla siis matka tähtiin tapahtuu alle valonnopeuden mutta paluu onnistuukin sitten alta aikayksikön!

Tällaiset madonreiät ja raketit ovat siis ainoastaan mahdollisia periaatteessa ja tällöinkin monin oletuksin. Reaalimaailmassa ne eivät ole mahdollisia näkyvissä olevan tulevaisuuden sisällä.


Hieman vettä myllyyn.

Wormhole simulation. Credit: Davide and Paolo Salucci

Based on the latest evidence and theories our galaxy could be a huge wormhole (or space-time tunnel, have you seen "Interstellar?") and, if that were true, it would be "stable and navigable". This is the hypothesis put forward in a study published in Annals of Physics and conducted with the participation of SISSA in Trieste. The paper, the result of a collaboration between Indian, Italian and North American researchers, prompts scientists to re-think dark matter more accurately.

"If we combine the map of the dark matter in the Milky Way with the most recent Big Bang model to explain the universe and we hypothesise the existence of space-time tunnels, what we get is that our galaxy could really contain one of these tunnels, and that the tunnel could even be the size of the galaxy itself. But there's more", explains Paolo Salucci, astrophysicist of the International School for Advanced Studies (SISSA) of Trieste and a dark matter expert. "We could even travel through this tunnel, since, based on our calculations, it could be navigable. Just like the one we've all seen in the recent film 'Interstellar'". Salucci is amonAlthough space-time tunnels (or wormholes or Einstein–Rosen bridges) have only recently gained great popularity among the public thanks to Christopher Nolan's sci-fi film, they have been the focus of astrophysicists' attention for many years. "What we tried to do in our study was to solve the very equation that the astrophysicist 'Murph' was working on. Clearly we did it long before the film came out" jokes Salucci. "It is, in fact, an extremely interesting problem for dark matter studies".

"Obviously we're not claiming that our galaxy is definitely a wormhole, but simply that, according to theoretical models, this hypothesis is a possibility". Can it ever be tested experimentally? "In principle, we could test it by comparing two galaxies – our galaxy and another, very close one like, for example, the Magellanic Cloud, but we are still very far from any actual possibility of making such a comparison".

To reach their conclusions the astrophysicists combined the equations of general relativity with an extremely detailed map of the distribution of dark matter in the Milky Way: "the map was one we obtained in a study we carried out in 2013", explains Salucci. "Beyond the sci-fi hypothesis, our research is interesting because it proposes a more complex reflection on dark matter".

As Salucci points out, scientists have long tried to explain dark matter by hypothesising the existence of a particular particle, the neutralino, which, however, has never been identified at CERN or observed in the universe. But alternative theories also exist that don't rely on the particle, "and perhaps it's time for scientists to take this issue 'seriously'", concludes Salucci. "Dark matter may be 'another dimension', perhaps even a major galactic transport system. In any case, we really need to start asking ourselves what it is".