If string theory is correct does it mean that elementary particles don't really exist?

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Summary:

String theory and elementary particles.

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If string theory is correct does it mean that elementary particles like photons, electrons, and quarks don't really exist or does it mean they do but are made of cosmic strings and so therefore are not elementary?
 
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does it mean that elementary particles like photons, electrons, and quarks don't really exist
Of course not.

does it mean they do but are made of cosmic strings
String theory has nothing to do with cosmic strings.
 
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If string theory is true, does it mean quarks, electrons, photons etc. are made of strings and so are not really elementary particles, but are made of strings?
 
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I have done some reading and can see indeed that cosmic strings and the string in string theory are different entities. Cosmic strings can exist without string theory.
 
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If string theory is true, does it mean quarks, electrons, photons etc. are made of strings and so are not really elementary particles, but are made of strings?
Are you going to ask the same question over and over again, ignoring the replies? Then what is the point in replying?
 
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Are you going to ask the same question over and over again, ignoring the replies? Then what is the point in replying?
I'm not asking about cosmic strings in the second question, but the string in string theory. Apparently the two are different entities, not the same thing. I got them mixed up.
 
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Asked and answered

does it mean that elementary particles like photons, electrons, and quarks don't really exist
Of course not.
 
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If string theory is true, does it mean quarks, electrons, photons etc. are made of strings and so are not really elementary particles, but are made of strings?
Yes, that's true.
 
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The idea behind string theory is that elementary particles are just excitations of strings. You probably came across that old guitar-analogy already: Strings are like the strings on a guitar and the different modes of vibration - what we call the notes - are what we see as the elementary particles. In that sense it would be wrong to say that quarks, electrons, etc. are "made" of strings.

As to whether particles exist and are fundamental: While string theory is still in its infancy, one might anyway say that particles are not elementary but the underlying quantum fields are (Quantum Field Theory is already well established and experimentally verified). For example the Photon is just a local excitation of the electro-magnetic field. So is the Photon or the field elementary? It's a matter of definition. The term "exist" is even more vague. Do notes exist? In some "effecitve" way, of course. Particles are something with certain properties that we can measure.

Sorry, can't say anything about cosmic strings as I hardly know anything about them.
 
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