branes - Article Index

Encyclopedia - Cyclic Model: Encyclopedia - Cyclic Model
The cyclic model is a brane cosmology model of the creation of the universe, derived from the earlier ekpyrotic model. It was proposed in...   » Read the article

Encyclopedia - String Theory: Encyclopedia Ii - String Theory - Basic Properties
The term 'string theory' properly refers to both the 26-dimensional bosonic string theories and to the 10-dimensional superstring theorie...   » Read the article

Encyclopedia - Superstring Theory: Encyclopedia Ii - Superstring Theory - Number Of Dimensions
Our physical space is observed to have only four large dimensions, and a physical theory must take this into account, but nothing prevent...   » Read the article

Encyclopedia - String Physics: Encyclopedia Ii - String Physics - Types Of Strings
String physics - Closed and open strings. Strings can be either open or closed. A closed string is a string that has no end-points, and...   » Read the article

Encyclopedia - String Theory: Encyclopedia Ii - String Theory - Basic Properties
The term 'string theory' properly refers to both the 26-dimensional bosonic string theories and to the 10-dimensional superstring theorie...   » Read the article

Encyclopedia - Superstring Theory: Encyclopedia Ii - Superstring Theory - Extra Dimensions
Our physical space is observed to have only four large dimensions, and a physical theory must take this into account, but nothing prevent...   » Read the article

Encyclopedia - M-theory: Encyclopedia Ii - M-theory - Basics
It was believed before 1995 that there were exactly five consistent superstring theories, which are called, respectively, the Type I stri...   » Read the article

Encyclopedia - Ekpyrotic: Encyclopedia Ii - Ekpyrotic - Introduction
Brane cosmology assumes that the visible universe lies on a four-dimensional brane which moves in higher dimensional space. Our brane may...   » Read the article

Encyclopedia - Particle Physics: Encyclopedia Ii - Particle Physics - Subatomic Particles
Modern particle physics research is focused on subatomic particles, which have less structure than atoms. These include atomic constituen...   » Read the article

Encyclopedia - Graviton: Encyclopedia Ii - Graviton - Gravitons And Models Of Quantum Gravity
While the classical theory (i.e. the tree diagrams) and semiclassical corrections (one-loop diagrams) behaved as expected, the Feynman di...   » Read the article

Encyclopedia - String Theory: Encyclopedia Ii - String Theory - History
String theory was originally invented to explain peculiarities of hadron (subatomic particle which experiences the strong nuclear force) ...   » Read the article

Encyclopedia - Graviton: Encyclopedia Ii - Graviton - Gravitons And Experiments
Detecting a graviton, if it exists, would prove rather problematic. Because the gravitational force is so incredibly weak, as of today, p...   » Read the article

Encyclopedia - Graviton: Encyclopedia Ii - Graviton - Gravitons And Experiments
Detecting a graviton, if it exists, would prove rather problematic. Because the gravitational force is so incredibly weak, as of today, p...   » Read the article

Encyclopedia - String Theory: Encyclopedia Ii - String Theory - Problems
String theory remains to be verified. No version of string theory has yet made a prediction which differs from those made by other theori...   » Read the article

Encyclopedia - Superstring Theory: Encyclopedia Ii - Superstring Theory - Number Of Superstring Theories
Theoretical physicists were troubled by the existence of five separate superstring theories. This has been solved by the second superstri...   » Read the article

Encyclopedia - String Theory: Encyclopedia Ii - String Theory - Popular Culture
The book The Elegant Universe by Brian Greene was adapted into a three-hour documentary for Nova. String theory is also a series of books...   » Read the article

Encyclopedia - String Theory: Encyclopedia Ii - String Theory - Problems
String theory remains to be verified. No version of string theory has yet made a prediction which differs from those made by other theori...   » Read the article

Encyclopedia - Particle Physics: Encyclopedia Ii - Particle Physics - History Of Particle Physics
The idea that matter is composed of elementary particles dates to at least the 6th century BC. The philosophical doctrine of "atomism" wa...   » Read the article

Encyclopedia - Particle Physics: Encyclopedia Ii - Particle Physics - Theoretical Particle Physics
Theoretical particle physics attempts to develop the models, theoretical framework, and mathematical tools to understand current experime...   » Read the article

Encyclopedia - Particle Physics: Encyclopedia Ii - Particle Physics - The Future Of Particle Physics
Particle physicists internationally agree on the most important goals of particle physics research in the near and intermediate future. T...   » Read the article

Encyclopedia - Particle Physics: Encyclopedia Ii - Particle Physics - Public Policy And Particle Physics
Experimental results in particle physics are often obtained using enormous particle accelerators which are very expensive (typically seve...   » Read the article

Encyclopedia - M-theory: Encyclopedia Ii - M-theory - Naming Conventions Or What Does M Stand For?
There are two issues to be dealt with here: When Witten named M-theory, he didn't specify what the "M" stood for, presumably because he ...   » Read the article

Encyclopedia - Ekpyrotic: Encyclopedia Ii - Ekpyrotic - Outstanding Problems
There are major outstanding problems with the ekpyrotic scenario. Foremost among them is that colliding branes are not understood by stri...   » Read the article

Encyclopedia - String Theory: Encyclopedia Ii - String Theory - History
String theory was originally invented to explain peculiarities of hadron (subatomic particle which experiences the strong nuclear force) ...   » Read the article

Encyclopedia - Particle Physics: Encyclopedia Ii - Particle Physics - Experimental Particle Physics
In particle physics, the major international collaborations are: Brookhaven National Laboratory, located on Long Island, USA. Its main f...   » Read the article

Encyclopedia - Particle Physics: Encyclopedia Ii - Particle Physics - Particle Physics And Reductionism
Throughout the development of particle physics, there have been many objections to the extreme reductionist (or greedy reductionist) appr...   » Read the article