Modern and Theoretical Physics

can someone tell me more aboot the strin g theory and the quark theory ...... are they related to each other

Okay so time is a dimension of the universe according to current modern theories and it is mathematically valid. Following this math, time and space are one and the same entity at the beginning of the universe. If time and space are one, what does this mean for a universe that is both expanding and progressing through time? Also, what does this mean for the specific inception of the universe? What I mean is, if time and space are one, what does "before" and "after" mean in that context? How does that relate to the "birth" of the universe and what we would call the following moments that include time and space being one? If, when moving back towards the beginning, time and…

I know that string theory has many variants and is more or less invented, but I am just looking for a starting point, so it's okay if you can answer in generalities. I have read that the way that a "string" vibrates determines what subatomic particle it is. For example, one vibration mode might make the string act like a proton. Is it possible to change the amplitude of the vibration of the string? Are vibrational amplitudes set, stepped or continuous? Is string theory usually constructed so that a single string maps to a single subatomic particle? What is stopping a string from representing multiple particles, like 5 protons and and three electrons ? To take this further…

Hi, i was wondering if the multiverse (in theory) still exists if we don't consider m-theory and quantum theory..

Many elements of science fiction contradict the laws of physics, fundamentally. For example, a spaceship going faster than light on pure fuel power alone. But, would teleportation, theoretically, comply with the laws of physics? I don't think so, as that would imply infinite velocity, which violates Einstein's rule of e=mc^2. Thoughts?

I was wondering if it is at all possible, revolving around Maxwells equations merging with multiple dimensions, that the photons which make up light are actually the quantized energy created from a rippling effect of the 5 dimension i believe... For example, like the idea revolving around colliding 3-branes in M-theory, whereby the ripples in the branes produce clumps of matter/energy etc.

I was wondering with the SO(32) (i think it is) for the heterotic string theory/model. Is that the resultant of 2 different string theories/models, in terms of the math or from 2 different string theory/model symmetries..

... could anyone explain to me the why, how, what not as pertains to atoms having electrons and these electrons seemingly jumping/disappearing then popping up again in an other location...? of course, this must be pretty elementary stuff, but humor me, please? =D

Many people have often sought ways to phase through walls. Now for faster travel, Strategic advantage, Unissued access, or more mischievous reasons is unimportant. The want is there and where there is a will there is one hard headed enough to try. So the reason this topic has emerged on this wonderful morning at 2:00 am is as simple as my own curiosity. Last night (roughly at this time) I was watching the discovery channel about magnetism. When the topic of atomic magnetism came up I was immediately enticed. Learning that a spinning nuclei generates a tiny magnetic field only to be increased in force by the spinning electrons own magnetic field creates a small but,…

Please spew out all you know about the standard model and the photon. Thanks

Symmetries are hot topics is theoretical physics especially Lorentz symmetry, and there currently focus in various areas like String theory, Big Bang, quantum gravity. Symmetry violation are essential in these theories, read this article about Lorentz symmetry violation that shows Physical laws are not at same for different observers, i.e. pair-creation in a lab would not necessary be observed by another observer as length contraction and time dilation would pretty much follow Galilean transformation. Read about this article published at Science Publication NY: Full Text: http://www.scipub.or...i/pi1153-56.pdf

According to David Griffiths' Introduction to Elementary Particles, the ("chromo-electrostatic") color-potential, between two quarks, is often modeled using Hooke's Law (F = - k x). And, according to Michael Creutz's Quarks, Gluons and Lattices (pg. 3): If the Flux Lines are conserved, would the "bag of gluo-electric flux", which squeezes down when stretched, but pancakes out when compressed, generate a Hooke's Law force ?? (This simple picture does not account for the powerful "chromo-magnetism" force, which Griffiths also discusses, separately.)

After reading through many of these topics on string theory, I wonder if this is really the place to submit this idea to the judgment of others. I don't know all the high end theories that go along with this, and so if you throw some formulas at me, I'll probably be stumped. I prefer to write and explain things in leyman's speech... So i've seen the arguments for branes, conservation of energy of strings etc.. I've even seen some people refer to strings as particles. I'm not saying anyone is wrong or that anyone is right. I'm just throwing this idea out there. I may type things as statement-of-fact, but all of this is only a theory. First concept. A string is the ba…

Can there be an infinite amount of dimensions? Example: The 1D is an infinitely long, infinitely thin line. 2D is an infinite amount of those lines next to each other. This is infinitely flat. 3D is an infinite amount of those 2D flat sheets on top of each other. This is an infinitely 'big' space. 4D is an infinite amount of 3D stacked ana and kata direction 'next' to each other. Would 5D be infinite 4D also 'next to each other. Then 6D to 5D etc. For a video on 4D click this . Notice how 4D is 'cubes' that are infinitely big in a line. Would 5D be that line stacked infinitely 'next' to each other?

Someone inserted an interesting post about David Deutsch, and I spent some time reading about quantum computation & the Multiverse. In some wiki page about the Many Worlds Interpretation, I found this from the "Common objections and misconceptions" list: Objection: Conservation of energy is grossly violated if at every instant near-infinite amounts of new matter are generated to create the new universes. MWI response: Conservation of energy is not violated since the energy of each branch has to be weighted by its probability, according to the standard formula for the conservation of energy in quantum theory. This results in the total energy of the multiverse be…

Well Does infinity exist in nature? I have recently heard blackholes actually slowly die, they somehow radiate energy (I think in gravity waves). Perhaps Black holes (not the event horizon, the "Actual Stuff") has a real size? Also the bigbang seems to suggest our universe isnt endless, Just really really really big. So the universe Does not go for infinity. Theres a Limited Speed, Mass/energy in the universe and Size. If there is a limit on everything there is a limit on complexity. Do we realy know of any instances in which infinity does exist, or have we created the concept?

Hi, I was wondering if the idea Andre Linde i think, proposed about spontaneous breaking (i believe) or it may have been inflation happening at random points in space time. Could this explain the current rapid expansion of the universe, perhaps due to this type of bubble like nature..

I was wondering why space-time is foaming or bumpy at the microscopic level or plank scale ?

Have scientists seen "bare" exotic quarks (s, c, b, t), or do they only appear in Mesons & Baryons ?

Please ponder the low-energy limit. There, the wave functions of the collision particles are relatively de-localized & diffuse. As the two diffuse probability "clouds" come together, and begin to merge & overlap, at any given moment, the total Transition Matrix Element (TME), computed from the overlap integral as [math]| <\Phi | \Psi > |^2[/math], is low. But, at high-energy, the Lorentz contraction "pancakes" the wave functions, into "dense disks" perpendicular to the direction of motion. When these "dense disks" of probability collide, like "lead plates", the overlap integrals automatically "max out", making for larger TMEs. Moreover, at highe…

Hello friends I want to Know about atomic interactions inside a power source

Hi, I am student from malaysia and taking science physics course, i have to start my final year project soon, My topic was something about Theorectical Physics in Cosmology(not decided yet) and my supervisor advise me going to read the book of "Introducing Einstein's general relativity by Ray d‘Inverno’" but I havent get that book from library because all of this books was checked out, and I had show my supervisor that I had bought a book of "Gravity: An introduction to Einstein's general relativity by James B.Hartle", but he said this book is good but for physicist, not Theorectical Pyhsicist. Right now I wish to find another book that can help me, Anyone know about the…

How big are Collider Beams, used in High Energy collisions ? For example, in Deep Inelastic Scattering experiments, beaming Leptons (electrons, neutrinos) at nucleons, how physically big & broad are the Leptonic Wave Functions ?

Nucleons are apparently immersed in a "pion cloud", of extended, delocalized, diffuse pions. And, pions apparently produce the Yukawa Potential, to mediate the Strong Nuclear Force. What role do pions play, in nuclear fusion processes ? Could you create some sort of "pion catalyzed fusion", along the lines of [math]p^{+} + p^{+} + \pi \rightarrow He^{2+}:\pi \rightarrow He^{2+} + \pi[/math] ? Could you "pre-treat" fusion fuels, by bombarding the protons in order to "stress" their gluon fields, thereby (electro- or neutrino-)producing quark/antiquark pairs (as gluon bonds break), which could "hadronize" into pions, and make the protons "pion rich" and "extra (Strong Fo…

Why is the Brownian motion true? http://www.stat.berkeley.edu/users/peres/bmbook.pdf If the local infrared light is increased, the Brownian motion increases, why?