“Almost all string theory models that resemble the Standard Model display supersymmetry at the compactification scale,” write Marchesano and his coauthors.

Generating tension In all string theory models, the strings have some tension; but in most conventional models the value of this tension is a constant that is added in by hand, arbitrarily.

Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string theory,' a new preprint suggests.