Register to reply 
Why does antimatter exist? 
Share this thread: 
#1
Jul514, 10:57 PM

P: 23

I don't understand why antimatter exists in the first place. Could you explain why and how an asymmetry developed between matter and antimatter?



#2
Jul614, 12:26 AM

Sci Advisor
PF Gold
P: 9,485

Dirac was the first to realize the relativistic version of the Schrodinger wave equation permitted anti particle counterparts to ordinary particles. We now know anti particles are routinely produced by high energy collisions between particles, and that anti matter should have existed in equal quantities shortly after the big bang. For reasons unknown, a slight excess [roughly one in a million] of matter particles survived the mutual annihilation frenzy that followed. The reason for this asymmetry is one of the great mysteries in science. Some as of yet unknown form of CPT violation is the prime suspect.



#3
Jul614, 08:39 AM

P: 148




#4
Jul1614, 03:51 PM

P: 22

Why does antimatter exist?
Matter and Antimatter are absolutely identical and indistinguishable in every aspect other than charge. Helium is composed of 2 (+) protons, 2 neutrons and 2 () electrons AntiHelium is composed of 2 () Antiprotons, 2 neutrons and 2 (+) positrons (antielectrons) The reason matter exists in nature and Antimatter has to be synthesized is due to Chirality (helical oriention) All matter follows the righthanded rule of chirality, Antimatter follows the lefthanded rule of chirality, and is not found in nature. Absolute symmetry is allowed in mathematics  in the Dirac equation for example, however this is not true of all interactions in nature. Equations are only abstract tools for calculating interactions in nature, Equations do not describe the causes of interactions, nor can they explain a natural phenomenon. Causes are the domain of practical experimental physics and not theoretical mathematics. 


#5
Jul1614, 04:00 PM

P: 1,014

Also it would be much easier and more illustrative to speak of electron and positron, rather than going to a composite system. 


#6
Jul1614, 04:12 PM

P: 22

AntiNeutrons are composed of Antiquarks and Neutrons are composed of Quarks this is the only difference  and is also due to Chirality. 


#7
Jul1614, 04:58 PM

Mentor
P: 12,037




Register to reply 
Related Discussions  
Could absolute motion exist in higher dimensions, if they exist?  Cosmology  1  
Antimatter: how they exist in matter?  High Energy, Nuclear, Particle Physics  9  
Is antimatter a theory or does it exist?  High Energy, Nuclear, Particle Physics  32  
Cogito ergo sum,.. however, I dont know you exist, prove to me you exist  General Discussion  31  
Do mathematical proofs exist, of things that we are not sure exist?  Math & Science Software  43 