What is the difference between anti-particle & exotic matter

In summary: This is just a way to describe the behavior of antiparticles mathematically. In summary, exotic matter has negative mass and moves opposite to applied force, while antiparticles have positive mass and behave similarly to particles in terms of reaction to force. The concept of antiparticles traveling backwards in time is a mathematical description and not a literal phenomenon.
  • #1
jackyruth
8
0
Exotic matter have a negative mass and goes in the opposite direction of the force applied to it. These properties seem like the opposite of normal matter. I heard anti particles travel backwards in time, I can easily imagine a particle falling due to gravity in reverse time as a object that seem to move the opposite direction of a applied force. So what is the difference between anti-particle and exotic matter?
 
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  • #2
Exotic matter has neever been experimentally observed and probably it does not exist at all.

Antiparticles have positive mass and they have been observed already 80 years ago and they have been in use in practical applications for decades every day all over the world in lots of devices and machines (like the positron emission tomography).

Also, let me quote bhobba: "Anitiparticles do not literally travel back in time - its just a way to describe it mathematically."
 
  • #3
Oh thx. But do anti particle react like exotic matter when force is applied?
 
  • #4
jackyruth said:
Oh thx. But do anti particle react like exotic matter when force is applied?

No, antiparticles react to "force" in the same way as particles. Electrons and positrons (poistrons are antielectrons) have opposite charge and they are attracted. The positron is not running away from an electron.
 
  • #5
So why do people mention it seem to be a particle traveling backwards in time.
I know it's not really doing that but there must be a reason why people say that
 
  • #6
As with everything in physics, without maths none of it makes sense.
 

Related to What is the difference between anti-particle & exotic matter

What is the difference between anti-particle and exotic matter?

The main difference between anti-particles and exotic matter is their composition. Anti-particles are particles that have the same mass as their corresponding particles, but with opposite charge. Exotic matter, on the other hand, refers to particles that have properties that are not found in ordinary matter.

How do anti-particles and exotic matter interact with each other?

Anti-particles and exotic matter can interact with each other through the strong and weak nuclear forces, just like ordinary matter. However, they can also interact through additional forces, such as the hypothetical dark matter force.

Can anti-particles and exotic matter coexist in the same space?

Yes, anti-particles and exotic matter can coexist in the same space. In fact, some theories propose that the Universe is made up of both matter and anti-matter, and there may be regions where exotic matter is present.

How are anti-particles and exotic matter created?

Anti-particles are created in high-energy collisions, such as those that occur in particle accelerators. Exotic matter, on the other hand, is thought to have been created during the early stages of the Universe or in extreme environments, such as the interior of neutron stars.

What are some potential applications of anti-particles and exotic matter?

Anti-particles and exotic matter have potential applications in fields such as energy production, space propulsion, and medical imaging. They may also help us understand the mysteries of the Universe, such as the nature of dark matter and the origin of the Universe.

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