Is their such a thing as a some kind of particle with negative atomic mass?

Question

Maybe i've been watching to much andromeda ascendant lately.

Answer 1

negative mass is theorized, but disbelieved by many. it has not been proven, but also not disproved. in fact negative mass is does not violate any laws of physics, meaning it is a possibility. some believe that the weakness of gravity compared to the other 2(3) fundamental forces is due to negative mass repulsion.

no particle has been proven with negative mass, only theorized particles.

for example, dark matter may have negative mass, making it at the moment impossible to detect

edit:: anti matter does not have negative mass!!!! it has the same mass as its partner particle, except it has opposite properties ( opposite charge, charm, e, baryon/lepton number etc etc))

however!!!

some people believe that they do, and it is in fact negative mass that makes them annihilate there particle partners, and behave the way they do.

edit again: i believe i got a thumbs down because "negative mass implies paradox's" but maybe people should study before answering!! try reading my sources

Answer 2

Currently it is assumed to not exist, and the possibility of it existing is very low.

When investigating negative masses, scientist often ask what would be the consequences of having negative masses - what would we see in nature?

Well, a lot of wierd and immpossible things can happen such as anti-gravity. spontaneous creation and destruction of massive particles that violate the laws of conservation of energy, and negative energy. These in turn lead to even more impossible concepts like free infinite energy, reversing irreversible processes, and even past time travel. Thats just a few things that can go wrong.

But the biggest "proof" that negative masses don't exist, is that physics have a very self consistent laws that work over an astounding range of sizes and distances and times. Nowehere in there is even a hint that negative masses are real or even needed. In fact, it would contradict every law on a fundamental level. It is more for this reason that most scientists are sure that negative masses are more fiction than fact.

But who knows, if you can come up with a scientific theory that incorporates negative masses seamlessly into the current working theory - that will raise a few eyebrows and prompt new scientific inquiry into the subject.

Hoep that helps, and thanks for the cool question.

Answer 3

no

Answer 4

i don't think so.  not that anyone has discovered yet.

Answer 5

Negative mass implies paradoxes. The harder you push it, the faster it accelerates toward you. Therefore, it is unlikely to exist.  

Answer 6

Yes the anti matter particles.

Answer 7

There is no known particle with negative mass.

However negative energy or "dark energy" has been suggested to solve the unexplained phenomena of an increasing expansion rate in the universe.

IF the dark energy idea turned out to be true, then  as energy and mass are equivalent there would exist particles with negative mass.

Do remember thou the Dark energy scheme is only an idea at present, as no experiments have been conceived to test it. (In fact the idea only really describes the problem.)