string theory

(redirected from String theorist)
Also found in: Dictionary, Thesaurus.

string theory,

description of elementary particleselementary particles,
the most basic physical constituents of the universe. Basic Constituents of Matter

Molecules are built up from the atom, which is the basic unit of any chemical element. The atom in turn is made from the proton, neutron, and electron.
..... Click the link for more information.
 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 supersymmetrysupersymmetry,
in physics, theory concerning the relationship of the elementary particles called boson to those known as fermions, and vice versa, and linking the four fundamental forces.
..... Click the link for more information.
, has been seen by some physicists as a way of unifying the four known fundamental forces of nature, but a lack of evidence for supersymmetric particles, especially in the experiments conducted by the Large Hadron Collider, has called supersymmetry into question. The strings are embedded in a space-timespace-time,
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.
..... Click the link for more information.
 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.

Bibliography

See P. C. W. Davies and J. Brown, ed., Superstrings (1988); L. Smolin, The Trouble with Physics (2006).

string theory

A theory of elementary particles based on the idea that the fundamental entities are not pointlike particles but finite lines, known as strings, or closed loops formed by strings (see also cosmic strings). Incorporating the concept of strings into supersymmetry has led to superstring theory, in which all the fundamental forces are unified at the Planck time using a multidimensional framework called a superstring; this is still a highly speculative theory.

string theory

The belief that all physical matter is made up of vibrating elements called "strings." Officially known as "superstring theory," it differs from traditional physics, in which all matter is made up of ball-like particles.
References in periodicals archive ?
Lacking strong experimental evidence, some string theorists take an almost metaphysical stance, claiming that the theory must be correct due to its "beauty and elegance," despite its failure to provide any predictions that can be verified or refuted by observational data (Woit, 2006, p.
In the end, Smolin admits that he hasn't managed to do much better than string theorists, and his book is 'a form of procrastination.
Soon after the RHIC experiments, string theorists realized that their strings might be tying the bowling pins together, explaining the odd liquidlike behavior of the quark-gluon plasma.
It's a little funny for Woit and Smolin to be making a judgment about how we should be carrying on our research," says string theorist Andrew Strominger of Harvard University.
Essentially, string theorists assert that all matter is made of one fundamental object--the string--and that differentiation of material comes from the different ways in which strings vibrate.
String theorists failed to predict it and have nothing useful to say about it.
String theorists celebrate as one of their theory's virtues that gravity arises readily from its mathematics, rather than being put in "by hand.
Ambitious young researchers must either worship at the altar of string theory or risk accusations of heresy for trying out alternative theoretical strategies (putting themselves, as Smolin points out, where the string theorists themselves were not so long ago).
String theorists do not ask whether extra dimensions exist; instead, they ask: "Where are they?
Maldacena (Institute for Advanced Study), and other string theorists showed that black holes preserve information at their event horizons.
String theorists are careful to point out that this does not prove the final correctness of the theory.
Essentially string theorists assert that all matter is made of one fundamental object--the string--and that differentiation of material comes from the different ways in which strings vibrate.