Is there gravitational pull between Matter and anti-matter?

Question

I am asking this because, everything is supposed to have a corresponding particle in the "anti" world. So even graviton should have "anti-graviton".......

Normally gravitation would happen because of exchange of 'gravitons'.

Now between matter and anti-matter, 'gravitons' and 'anti-gravitons' are being transmitted and of course these cannot be exchanged right?

so now there must be no gravitational attraction between these?

Answer 1

Ooh this is a tough one. If they repelled each other, it would violate the conservation of mass/energy. The only concievable experiment that could prove the effects one way or the other is to get an electrically neutral chunk of matter and anti-matter, such as hydrogen and anti-hydrogen, close enough to measure any force between them. They have succeeded in producting and confining infintessimible amounts of anti-hydrogen, but not for appreciable amounts of time, or in quantities large enough to use for this kind of experiment. There's one theory that says anti-matter would actually "fall" faster in a vacuum than ordinary matter. Actually there are lots of theories. Here's an article that discusses a few of them. Sorry I can't give you a direct definitive answer, but as of today, no one can.

http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/antimatterFall.html

Peace

Answer 2

Yes, there is a gravitational pull between both anti-matter and matter but the electrostatic attraction between the two will be much stronger.

As far as your assumption about anti-particles its not exactly correct. There are some particles that are there own anti-particle. Also the graviton would be a carrier particle, and I'm that that carrier have anti-particles. Have you ever heard of an anti-photon?

Answer 3

Yes, both matter and anti-matter are subject to laws of gravitation. Gravity is a property of particles with "mass", regardless whether they are matter or anti-matter. By the way, the term anti-matter sounds very exotic, but it is just a label that describes a particle that has the opposite electrical charge and spin of another particle with identical mass.

So electron has an anti-matter partner called the positron, which has a + electrical charge and a -1/2 spin. Similarly protons have anti-protons, which have - electrical charge and also opposite spin. Neutrons have no electrical charge but does have spin; hence, it also has an anti-matter partner with opposite spin.

BTW, photons are bosons, and has no anti-matter partner like an anti-photon. As a matter of fact, most matter/anti-matter collisions result in the release of high energy photons. Therefore, graviton, another type of boson, also do NOT have anti-matter partner like anti-graviton. There are no bosons with anti-matter partners, because all bosons are force-communicating particles, i.e. photons communicate the electromagnetic force, graviton communicate the gravitational force, and gluons communicate the strong force.

Answer 4

Yes. Matter and antimatter behave identically in a gravitational field. Einstein's Principle of Equivalence says that being pulled to the floor by a gravitational field is exactly the same as being in free space in a rocket accelerating at 1g. If you had an apple and an anti-apple floating in the cabin of a spacecraft in zero g and you turned on the engine and started to accelerate, they'd both appear to be pulled to the rear of the craft by a gravitational field. Some particles are their own antiparticles; photons for instance, so when charged antiparticles are accelerated, the photons they radiate are just ordinary photons. Your question is a good argument for the proposition that gravitons are also their own antiparticles.

Answer 5

Yes they do, but this gravitational pull is negligible compared to the electric pull that stems from their opposite charges.

Antimatter - matter is much more attracted to each other than matter-matter.

Energy "particles" don't quite exist in the form of "steel balls" being shot at each other. There exist what we call Plank's constant of time, which also limits the time into which an interaction can take place.

At plank's level, energy looks like swiss cheese where you have holes and peaks. Therefore, gravity would be no exception and there would be peaks, which we would call gravitons, but it's not exactly a particle.

Same thing for light actually. It's only because of plank's limit that electromagnetic radiation of very short waves ( light, UV, X-rays ) exhibit particle behavior ( peaks ).

Answer 6

Yes they do, opposites attract, everything has gravitational pull and when matter and anti matter meet they destroy each other

Mater and anti matter is different from graviton, what ever that is.

Answer 7

The ONLY difference between matter and anti-matter is electrical charge. Gravitational energy is not affected by electrical charge, therefore there is gravitational attraction between matter and anti-matter particles.

Answer 8

You probably know that a particle of matter and the same particle of antimatter will annul each other because they have opposite charges.
ie: -1+1=0.

Antimatter has mass, so in a galaxy of antimatter the same gravitational law applies.

Answer 9

anti-matter does not have "anti mass". In all experiments done in particle accelerators, anti-particles behave, as far as mass is concerned, just like normal particles.

Answer 10

They both have mass so they are both affected by gravity.