Research Report: String Theory

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Research Report Summary

Topic Summary (from www.superstringtheory.com): So what is string theory? For that matter, what the heck are elementary particles? If this all sounds totally confusing, try this section first.

[ Detailed Research Report | Mind Map ]

Major Themes:
  • string theory: So what is string theory (from www.superstringtheory.com)
  • Quantum gravity: This model describes, in low enough energies, a Quantum gravity theory, which also includes (if open strings are incorporated as well) gauge fields such as the photon (or, more generally, any gauge theory ) (from en.wikipedia.org)
  • Superstring theory: String theories which include fermionic vibrations are now known as Superstring theories ; several different kinds have been described, but all are now thought to be different limits of M- theory . (from en.wikipedia.org)
  • particle physics: At its core, string theory uses a model of one-dimensional strings in place of the particles of quantum physics (from physics.about.com)
  • string theories: string theories which include fermionic vibrations are now known as superstring theories ; several different kinds have been described, but all are now thought to be different limits of M-theory . (from en.wikipedia.org)
  • open strings: This model describes, in low enough energies, a quantum gravity theory, which also includes (if open strings are incorporated as well) gauge fields such as the photon (or, more generally, any gauge theory ) (from en.wikipedia.org)
  • quantum theory: This is only true within string theory there is no such restriction in quantum field theory (from simple.wikipedia.org)
  • superstring theories: The superstring theories of type IIA and IIB are somewhat different (from theory.tifr.res.in)
  • Holographic principle: Since this argument is very general relying only on black-hole evaporation and the Holographic principle , it has been suggested that this prediction would be true of any consistent Holographic theory of quantum gravity, although the phrase 'consistent Holographic theory of quantum gravity' might very well be synonymous with 'string theory'. (from simple.wikipedia.org)
  • fundamental theory: Most importantly, the theory has a fundamental instability, believed to result in the decay (at least partially) of spacetime itself (from en.wikipedia.org)
  • black hole: The reason is that two such charged massive particles will attract each other gravitationally more than they repel each other electrostatically, and could be used to form black holes (from simple.wikipedia.org)
  • space time: Most importantly, the theory has a fundamental instability, believed to result in the decay (at least partially) of spacetime itself (from en.wikipedia.org)
  • charged black: If there are no light charged particles, these black holes could not decay efficiently, barring improbable conspiracies or remnants (from simple.wikipedia.org)
  • different particles: The essential idea behind string theory is this: all of the different 'fundamental ' particles of the Standard Model are really just different manifestations of one basic object: a string (from www.nuclecu.unam.mx)
  • gauge theory: This means that the discovery of a new gauge group with a small quantum of charge and only heavy charged particles would falsify string theory (from simple.wikipedia.org)
  • one dimension: According to string theory, if we could examine these particles with even greater precision a precision many orders of magnitude beyond our present technological capacity we would find that each is not pointlike but instead consists of a tiny, one -dimensional loop (from www.pbs.org)
  • one theory: Nevertheless, proponents of string theory seem confident that proof of various sorts will come with technological progress and time (from www.wisegeek.com)
  • charged particles: From the study of examples, and from the analysis of black-hole evaporation, it is now accepted that theories with a small charge quantum must come with light charged particles (from simple.wikipedia.org)
  • fundamental particles: The fundamental particles of the universe that physicists have identified electrons, neutrinos, quarks, and so on are the 'letters' of all matter (from www.pbs.org)
  • Type IIA: The fermions are parity-conserving in Type IIA theory and parity-violating in Type IIB (from theory.tifr.res.in)
Theme Popularity:
string theory 100%
   
Quantum gravity 60%
   
Superstring theory 50%
   
particle physics 50%
   
string theories 50%
   
open strings 50%
   
quantum theory 40%
   
superstring theories 40%
   
fundamental forces 40%
   
spacetime dimensions 40%
   
closed string 40%
   
open string 40%
   
closed strings 40%
   
quantum field theory 40%
   
field theory 40%
   
high energy 40%
   
quantum field theories 40%
   
String field theory 30%
   
Holographic principle 30%
   
fundamental theory 30%
   
Extra dimensions 30%
   
black hole 30%
   
space time 30%
   
theory called 30%
   
charged black 30%
   
different particles 30%
   
two different 30%
   
gauge theory 30%
   
quantum strings 30%
   
two dimensions 30%
   
String duality 30%
   
two theories 30%
   
first theory 30%
   
one dimension 30%
   
extra dimension 30%
   
gauge theories 30%
   
one theory 30%
   
gravitational theory 30%
   
charged particles 30%
   
holographic theory 30%
   
first superstring 30%
   
Cambridge University Press 30%
   
University Press 30%
   
High Energy Physics 30%
   
different mathematical 20%
   
holographic description 20%
   
gravitational source 20%
   
gauge group 20%
   
fundamental particles 20%
   
Standard Model 20%
   
Type IIA 20%
   
musical notes 10%
   
particle accelerators 10%
   
Big Bang 10%
   
string theorists 10%
   
string theorist 10%
   
elementary particles 10%
   
quantum field 10%
   
unified theory 10%
   
force carriers 10%
   
matter particles 10%
   
gauge particles 10%
   
massless particles 10%
   
type IIA theory 10%
   
tensor gauge fields 10%
   
gauge fields 10%
   
gauge field 10%
   
quantum physics 10%
   
Planck length 10%
   
Type IIB 10%
   

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