What Exactly is a String in String Theory?

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In string theory, all fundamental particles, including electrons, are not point particles but rather one-dimensional strings. These strings vibrate in different configurations, which gives rise to the various properties of particles and waves in the universe. The theory posits that there are multiple types of strings, including one-dimensional and two-dimensional variations, often referred to as membranes. The classification of these strings as membranes raises questions about their underlying composition and structure. Understanding what constitutes these membranes remains a complex topic within the framework of string theory.
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please excuse my ignorance, i have read much about strings
sometimes i even get a glimmer of understanding,
the problem is i can not find referance to what a string is
ok an electron is a point particle so a string is?
 
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Originally posted by wolram
please excuse my ignorance, i have read much about strings
sometimes i even get a glimmer of understanding,
the problem is i can not find referance to what a string is
ok an electron is a point particle so a string is?

Actually, in the string theory framework, you discard the idea that an electron (or any other subatomic particle, for that matter) is a point particle. They are all strings.

Answering what a string actually is thus becomes like answering what a point particle actually is in the Standard Model.
 
Actually, in the string theory framework, you discard the idea that an electron (or any other subatomic particle, for that matter) is a point particle. They are all strings.
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so for every particle, wave, in the real world, is a string
that gives that particle, wave, its properties?
i have read that many different types of string are theorized
all basicaly the same thing but in diferent configurations
some one dimentional, some two dimensional etc.
i understand that they are clasified as membranes, but
membranes of what?
 
"Supernovae evidence for foundational change to cosmological models" https://arxiv.org/pdf/2412.15143 The paper claims: We compare the standard homogeneous cosmological model, i.e., spatially flat ΛCDM, and the timescape cosmology which invokes backreaction of inhomogeneities. Timescape, while statistically homogeneous and isotropic, departs from average Friedmann-Lemaître-Robertson-Walker evolution, and replaces dark energy by kinetic gravitational energy and its gradients, in explaining...

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