# String theory.

@article{Greene1994StringT, title={String theory.}, author={Brian Randolph Greene and David R. Morrison and Joseph Polchinski}, journal={Proceedings of the National Academy of Sciences of the United States of America}, year={1994}, volume={95 19}, pages={ 11039-40 } }

Particle physicists have spent much of this century grappling with one basic question in various forms: what are the fundamental degrees of freedom needed to describe nature, and what are the laws that govern their dynamics? First molecules, then atoms, then “elementary particles” such as protons and neutrons all have been revealed to be composite objects whose constituents could be studied as more fundamental degrees of freedom. The current “standard model” of particle physics—which is nearly…

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