Make your own free website on Tripod.com

I dReAd tHe dAys

String Theory
Home
Ikky
Image Related
Pagan Scientology
Poem Book
Journal
Guest Book
Links
My Life In Hell
Dream Study
String Theory
pAy mE
Yahoo Album
Pagan Site
Impending Doom
Kick Ass
My Music List

i dReAd tHe dAys

This Page Has a Bunch Of information pertaining to the "string Theory" It is a theory of our existance and the threads that are within... If you want to go directly to the referance site that I have borrowed this information there are links after reference you can go to to find the pertaining site in which I found the information.  Thanx                                                                                 

String Theory

1997

Oil on Linen
42" x 36"

PRESS RELEASE
Date Released: Monday, June 24, 2002
Source:
Netherlands Organization for Scientific Research

New insights into open string theory

Theoretical physicist Lennaert Huiszoon has described a new family of strings in research conducted at the National Institute for Nuclear Physics and High Energy Physics. He investigated so-called open strings which can describe elementary particles with a strong interaction.

With string theory, physicists are trying to construct a unifying theory for gravity and quantum mechanics. The theory describes extremely heavy and very small objects such as the universe shortly after the Big Bang or black holes. According to string theory our universe has ten dimensions: three spatial dimensions, one time dimension and six dimensions which are possibly rolled up into thin cylinders.

One of the problems of string theory is that five different versions of it exist! Four of these are theories with closed strings, which can be visualised with elastic bands that move in space-time. The fifth theory has open strings, which can be visualised with elastic bands cut open. In string theory the physics is limited to the splitting and joining of strings. This is the interaction between elementary particles. The greater the number of branches, the stronger the interaction between the particles. To make the calculations feasible, string theorists only examine weak interactions, in other words strings with few branches.

Since 1994 it has been known that one of the closed string theories with strong interactions is exactly the same as the open string theory with weak interactions. Bcyvestigating the open string theory, the strong interaction can be described without endlessly complicated calculations. A lot of research concentrates on linking the various string theories. It is thought that they are all special variations of the same theory.

The research into the open strings particularly concentrates on the spaces in which the edges of the strings (the start and endpoint of the cut open elastic band) can move. Lennaert Huiszoon carried out mathematical research into these edge spaces. The spaces are called D-branes after the mathematician Dirichlet.

The physicist suspects that our universe is a four-dimensional D-brane. To prove this a D-brane must be found which has all the properties of the universe: the relatively flat structure of the four- dimensional space time and all elementary particles, with the correct charge, spin and mass.

The physicist Huiszoon limited himself to strings in simple symmetrical spaces, so called group spaces. In the flat surface a circle is a group space and in three dimensions a sphere is a group space. In higher dimensions these group spaces become more complex. Using a new mathematical method he demonstrated that in these group spaces, the ends of the strings can only move in very specific lines or surfaces. In subsequent research the physicist hopes to find D-branes that can actually describe the universe.

REFRENCES

<LINKS LEAD TO EXTERNAL PAGES- for reference only>

elementary particles, Physics

Related Category: Physics

elementary particles, the most basic physical constituents of the universe.

string theory, Physics

Related Category: Physics

string theory, description of elementary particles based on one-dimensional curves, or "strings," instead of point particles. Superstring theory, which is string theory that contains a kind of symmetry known as supersymmetry, shows promise as a way of unifying the four known fundamental forces of nature. The strings are embedded in a space-time having as many as 10 dimensions : the three ordinary dimensions plus time and seven compactified dimensions. The energy-scale at which the stringlike properties would become evident is so high that it is currently unclear how any of the forms of the theory could be tested.

See P. C. W. Davies and J. Brown, ed., Superstrings (1988).

The Columbia Electronic Encyclopedia Copyright 2003, Columbia University Press.
Licensed from Columbia University Press. All rights reserved.

Enter content here


Click here to print this article.

space-time   
Related: Physics

central concept in the theory of relativity that replaces the earlier concepts of space and time as separate absolute entities. In relativity one cannot uniquely distinguish space and time as elements in descriptions of events. Space and time are joined together in an intimate combination in which time becomes the “fourth dimension.” The mathematical formulation of the theory by H. Lorentz (see Lorentz contraction ) preceded the interpretation by A. Einstein that space and time are not absolute. The abstract description of space-time was made by H. Minkowski. In space-time, events in the universe are described in terms of a four-dimensional continuum in which each observer locates an event by three spacelike coordinates (position) and one timelike coordinate. The choice of the timelike coordinate in space-time is not unique; hence, time is not absolute but is relative to the observer. A striking consequence is that simultaneity is no longer an intrinsic relation between two events; it exists only as a relation between two events and a particular observer. In general, events at different locations that are simultaneous for one observer will not be simultaneous for another observer. Other relativistic effects, such as the Lorentz contraction and time dilation, are due to the structure of space-time.

Bibliography: See E. F. Taylor and J. A. Wheeler, Spacetime Physics (1966); N. D. Mermin, Space and Time in Special Relativity (1968).


Columbia Encyclopedia, Sixth Edition, Copyright (c) 2005.

HighBeam Research content for this topic is list below