Yes, however the exact nature of them or their manner of "existence" is debated.
there is a theory that there are. the choice is up to you! Einstein said that Schwartzchild wormholes may be a gateway to alternate universes the math is quite complicated but on paper it is quite possible ------------------------------------------------------------------------------------------------------------ Theoretically, we do have parallel universes, and some [although not alot] of evidence supporting this theory has come up. Actually, even though the notion seems entirely ludicrous, there is some serious math behind the parallel universes theory or the many-worlds interpretation.
only really someone who understands maths or is a physics student level 3 to properly explain it.
One term that is often used is "multiverse", referring to a collection of universes. Note that this is still very hypothetical. Some top physicists believe that having multiple universes may be an unavoidable consequence of the laws of physics. But there is really no proof, one way or another.
Absolutely. Quantum Physics is all about matter and energy a gigantic field that still remains unsolved. This is very complex stuff! Even Einstein said so (E=MC2). Think of Quantum Physics as a large metal ball that is damaged every time something new about Quantum Physics is discovered. When Einstein discovered E=MC2, he merely scratched the surface of Quantum Physics. Everyone knows how complex his theory is, and if that's only a scratch of Quantum Physics, imagine how hard it would be to damage the rest. At this moment, Quantum Physics is virtually unsolvable. Software Design, on the other hand, is easy to solve. Software Design addresses a know specific problem. If your really good at Software Design, then designing a software, is a straight forward approach. Compare understanding Matter and Energy (and the Universe of Qunatum Physics) to making Microsoft Word or another Software. There's a COLOSSAL DIFFERENCE! I Hope this has answered your question.
there many universes apart from us, so there are many universes outside our universe and dark matter are the things that hold our universe and other universes. There is also a theory that explain dark matter is just mass that is from another universe which would be our parallel universe, i know it sounds mad, it sounds crazy, but that is the law of physics. But there really is no explanation yet, there is a whole shelf of Noble Price waiting for people to come up with the correct explanation of what dark matter really is.
"multiverse" And its not really a theory as (so far) its untestable.
That's a subjective question, so it really depends on your personal tastes. If you like slightly cliched children's cartoons about alternate universes with Internet-based battles, then sure. If that's not your style, then it's just not your style. That's really the only answer. You'll have to decide for yourself if it's a good show.
There are two answers here really. I'll begin by describing why it's different from Quantum Mechanics. Quantum Mechanics studies non-relativistic particles (or waves), that is particles where effects from Einstein's relativity are unnoticeable because the particle is travelling at a speed much slower than the speed of light. Additionally people study N-body problems, which means to say that we think of a system with precisely N particles. Quantum Field Theory on the other hand is a generalisation that attempts to study particles where relativistic effects can be noticeable. This has several additional problems, one of which is that it predicts that particles can be created or destroyed which means we're no longer in an N-body system. Quantum Field Theory was invented in order to deal with these problems and as such it generalises Quantum Mechanics. There are several additional complexities that Quantum Field Theory has a result of this, in particular there has always been problems that infinities show up in calculations that have caused various difficulties, though these have been solved by techniques in Physics known as renormalisation. To date Quantum Field Theory is the best theory of Physics that is experimentally verified. String Theory offers a possible improvement but it has yet (at least to my knowledge) to any experimental justification. Quantum Field Theory fully explains (nearly) everything we currently know about particle physics, including quantum effects in electromagnetism, nuclear physics and condensed matter physics. The outstanding problem in this field is to try and incorporate Einstein's theory of gravity. This is considered by many as one of the big outstanding problems in Physics today.
Mathematically, it's based upon analysis (calculus, differential equations, etc.) as are most fields of physics, but what really sets quantum apart from other physics fields is it's fundamental mathematical dependence on probability, linear algebra, and group theory. It's conceptually based on uncertainty, probability, and discreteness (as opposed to absolute and continuous).
Einstein's laws, particularly his theory of relativity, have been extensively tested and confirmed through numerous experiments and observations. They are considered highly valid and form the basis of modern physics. However, they may break down in extreme conditions such as near singularities or at the quantum level, where the theory of general relativity and quantum mechanics are not yet fully reconciled.
Theoretically, they really exist. :P Seriously, we're almost certain that black holes exist, but we've never quote-unquote seen one. However, then we get into all these rules of quantum mechanics that say they don't exist and do at the same time, then we realize that quantum physics and relativistic physics need to be reconciled, so we start looking for a formula to do so, keep looking, then look some more... The top statement is much easier to handle, don't you think?
Quantum physics is the study of the motion of particles, specifically the study of the behavior of subatomic particles such as photons, quarks, neutrons, leptons and about 20 others. These particles make up the basic atom and are responsible for the interactions of atoms and the basic properties of matter and energy.Quantum physics is the area of physics that focus on things that are on the atomic scale. Quantum physics, or quantum mechanics, explains why atoms, electrons, etc. act the way they do specifically on that really small scale.