Can Strings in 'Empty Space' Explain Gravitational Pull?

[Ben*]

ok...I'm a dummy. been doing some novice reading on string theory lately. couple questions: are strings in 'empty space'? and if so, is this how the gravitational pull of a body is exerted on another body...thru the interaction of strings in-between?

thanks.

 

[selfAdjoint]

ok...I'm a dummy. been doing some novice reading on string theory lately. couple questions: are strings in 'empty space'? and if so, is this how the gravitational pull of a body is exerted on another body...thru the interaction of strings in-between?

thanks.

String theory has a graviton, produced as a vibration mode of a "closed bosonic string". Strings can interact with each other, in fact that is the big subject of introductory string theory. So strings can exchange gravitons, and this would implement gravity a la string theory.

The space strings exist in is complicated by the existence in the theory of branes, like pieces of n-dimensional space for various values of n. Strings not only interact with branes , they can live in branes, or join branes together, and by playing around with these ideas physicsts have come up with huge amount of physical theory.

 

[Ben*]

ok...thx. need to do some more reading. got any suggestions? just finished the 'Elegant Universe'.