&--Saturday, April 7, 2007 ; 2:17 AM
EldwinSchrodinger @ just before i sleep..

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just before bed maybe i should spend some time sharing with you guys what cosmic strings mean or how would they exist. first of all, they're long and curvy, with a complex assortment of wiggles or fragmented into smaller loops that looks like taut rubber bands.
although they are thinner than the subatomic particles, these cosmic strings are are boundless in length, stretched by the cosmic expansion of the universe. and they're physically characterized by their mass per unit length, or tension, a parameter that reflects the gravitational heft. this linear density can reach incredibly high values. imagining about 1 million megatons per centimeter for strings formed at the so called "grand unification" energies (10^16 billion electron volts and higher) , corresponding to a time when all 4 fundamental forces in nature were combined as one. lol
so far according to my own knowledge, neutron stars are considered one of the most denses compact object we know of, even if we could squeeze one billion neutron star into the size of an electron, that would hardly reach the matter energy density characteristics if the grand unified cosmic strings. information contributed from Alejandro Gangui

Labels: String Theory

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