Antiparticle There is an antiparticle corresponding to most kinds of particle. It has the same mass and opposite electric charge.[1] Even electrically neutral particles, such as the neutron, are not identical to their antiparticle. In the example of the neutron, the 'ordinary' particle is made out of quarks, and the antiparticle out of antiquarks.[2] Particle-antiparticle pairs can annihilate each other if they are in appropriate quantum states. They can also be produced in various processes. These processes are used in particle accelerators to create new particles and to test theories of particle physics. High energy processes in nature can create antiparticles. These are visible in cosmic rays and in certain nuclear reactions. The word antimatter properly refers to (elementary) antiparticles, composite antiparticles made with them (such as antihydrogen), and larger assemblies of either. History In 1932, soon after the prediction of positrons by Paul Dirac, Carl Anderson found that cosmic-ray collisions produced these particles in a cloud chamber – a particle detector in which moving electrons (or positrons) leave behind trails as they move through the gas.

Protons, neutrons, and electrons are by no means all the particles that exist. First, for each kind of particle, there is a corresponding but opposite antiparticle. If the particle carries a charge, its antiparticle has the opposite charge. The antielectron is the positron, which has the same mass as the electron but is positively charged. Similarly, the antiproton has a negative charge. The remarkable thing about such antimatter is that when a particle comes into contact with its antiparticle, the original particles are annihilated, and substantial amounts of energy in the form of photons are produced. Since our world is made exclusively of ordinary particles of matter, antimatter cannot survive for very long. But individual antiparticles are found in cosmic rays (particles that arrive at the top of Earth’s atmosphere from space) and can be created in particle accelerators. And, as we will see in a moment, antimatter is created in the core of the Sun and other stars. Science fiction fans may be familiar with antimatter from the Star Trek television series and films. The Starship Enterprise is propelled by the careful combining of matter and antimatter in the ship’s engine room.

When we encounter problems that seem to have no answer, it is time to innovate.For a long time, we have been searching for antiparticles and the origin of dark energy.Here, at the Frontier of Knowledge, we will show that antiparticles can self-annihilate through a new mechanism, related to mass and electromagnetic charges.Everyone knows the famous equation of equivalence between energy and mass, right? The most celebrated equation in physics:E = mc²This equation changed the world, guided wars, and still fascinates to this day.Today, André Bonaventura, present a new equivalence:E = mc² = γqgα²c²Where:q is the electric charge (1.6 × 10⁻¹⁹ C)g is the magnetic charge (9.86 × 10⁻⁸ C)α = 1/137c is the speed of lightγ = 1.805 (even at rest, the electron exhibits wave-like behavior, emitting virtual photons, which justifies γ > 1).Since all these values are constants, we can combine them into a single constant A. Thus:A = γgα²This makes it easier to associate and remember the new equation of equivalence between energy, mass, and electromagnetic charge:E = mc² = Aqc²However, it is important to note that the electric charge of the positron is positive, while that of the electron is negative. Therefore, the equation above must be rewritten for both:For the electron:E = mc² = -Aqc² <=> mc² + Aqc² > 0For the positron:E = mc² = +Aqc² <=> mc² - Aqc² = 0Bingo! The equation for the positron reveals that it self-destructs (self-annihilates) due to the interaction between electric and magnetic charges. Thus, the positron ceases to exist, but the energy is conserved and dissipated into spacetime.In the early universe, during the third millisecond after the Big Bang, about 10⁸⁰ electrons and positrons were created. If each positron holds an energy of 8.19 × 10⁻¹⁴ J, the self-annihilation of all of them released approximately 10⁶⁶ J into spacetime.Since we do not observe the presence of other antiparticles, such as antiprotons and antineutrons, we postulate that they also self-annihilate. Therefore, the 10⁸⁰ antiprotons created and subsequently self-annihilated released approximately 10⁷¹ J into spacetime.If we sum the energy released by all the antiparticles, we arrive at the value of dark energy. Eureka! Dark energy is equivalent to the energy of antiparticles.Over the past 5 billion years, the evaporation rate of white holes has increased due to mass loss over the previous 7 billion years. This caused the energy released by evaporation to surpass gravitational forces, resulting in the accelerated expansion of spacetime.Thus, the universe is expanding at an accelerated rate: the gravitational evaporation of white holes continues to increase.

The positron is the antiparticle of the electron. In general, for any particle there exists a corresponding antiparticle. The two are identical except for the charges, i.e. electric charge, leptonic number, muonic number, …, which are equal in module but opposite sign. Examples are the electron and the positron, the first has negative electric charge, while the second has positive charge. Similarly for proton, which is positive charged, and the antiproton, which is negative charged. In the case of photons, they are their own antiparticle. When a particle and its antiparticle interact, they are destroyed in a process called annihilation which converts all their mass into energy following Einstein’s equation E=mc2. The inverse is also possible, a high-energy event creates a particle-antiparticle couple, this is called pair production. Needless to say, the products have total mass less than the one corresponding to initial energy from Einstein’s equation. For this reason, from an annihilation event, a cascade of particle-antiparticle pairs is generated, the mass of the created particle and antiparticle is less than the sum of the mass of the original particles. Still, in the annihilation process, the momentum and angular momentum of the initial particle-antiparticle system is conserved.The annihilation of a stationary positron-electron pair generates two photons. Due to the conservation of momentum, the two photons are emitted in opposite direction both with 511keV energy. The d

behave as a real particle of matter with the same mass but opposite electrical charge. By analogy, drops … (now-2) is the same as what the home dweller calls now (now-/)? Common sense says they are the same, but the … the speed of light is the same for both of these observers. Is My “Now” the Same as Yours? How and why

physics, antimatter is defined as matter composed of the antiparticles (or "partners") of the corresponding particles in "ordinary" matter, and can be In modern physics, antimatter is defined as matter composed of the antiparticles (or "partners") of the corresponding particles in "ordinary" matter, and can be thought of as matter with reversed charges and parity, or going backward in time (see CPT symmetry). Antimatter occurs in natural processes like cosmic ray collisions and some types of radioactive decay. Antiparticles can also be generated In…