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Hey, it's Riri 8 again I'm here to propose a very interesting theory, but this time I've translated everything and also brought in some information in English
What is bosonic string theory
Bosonic string theory is the earliest form of string theory, developed in the late 1960s
It proposes that fundamental particles are not point-like but rather tiny vibrating strings
Why 26 dimensions
This number arises from the need to cancel quantum anomalies in the theory
When quantizing strings, conformal symmetry must be preserved on the two-dimensional surface the worldsheet that the string traces through spacetime
This requirement leads to a strict condition
Spacetime must have exactly 26 dimensions
The Virasoro algebra, which describes the symmetries of the string, is only mathematically consistent in 26 dimensions
This makes the theory quantum anomaly-free
Why don’t we see these 26 dimensions
In our everyday experience, we live in a 4-dimensional world — 3 spatial dimensions plus 1 time dimension
According to the theory
The 26 extra dimensions are compactified — meaning they are curled up on themselves into extremely tiny shapes such as tori or Calabi–Yau manifolds
These dimensions are so small — on the Planck scale, about 10⁻³⁵ meters — that they are undetectable with current technology
The structure of our universe can be modeled as
M = R⁴ × K₂₂
Where
R⁴ represents our observable 4D spacetime
K₂₂ is the compact 22-dimensional internal space
If we scaled this up, it would be something like Hyperversal- hypervesal+
physics.stackexchange.com
en.wikipedia.org
What is bosonic string theory
Bosonic string theory is the earliest form of string theory, developed in the late 1960s
It proposes that fundamental particles are not point-like but rather tiny vibrating strings
Why 26 dimensions
This number arises from the need to cancel quantum anomalies in the theory
When quantizing strings, conformal symmetry must be preserved on the two-dimensional surface the worldsheet that the string traces through spacetime
This requirement leads to a strict condition
Spacetime must have exactly 26 dimensions
The Virasoro algebra, which describes the symmetries of the string, is only mathematically consistent in 26 dimensions
This makes the theory quantum anomaly-free
Why don’t we see these 26 dimensions
In our everyday experience, we live in a 4-dimensional world — 3 spatial dimensions plus 1 time dimension
According to the theory
The 26 extra dimensions are compactified — meaning they are curled up on themselves into extremely tiny shapes such as tori or Calabi–Yau manifolds
These dimensions are so small — on the Planck scale, about 10⁻³⁵ meters — that they are undetectable with current technology
The structure of our universe can be modeled as
M = R⁴ × K₂₂
Where
R⁴ represents our observable 4D spacetime
K₂₂ is the compact 22-dimensional internal space
If we scaled this up, it would be something like Hyperversal- hypervesal+
In Noether's theorem, what is a "classical solution of the equations of motion"?
I'm reading a book which states that: for each generator of a global symmetry transformation, there is a current $j^{\mu}_{a}$ which, when evaluated on a classical solution of the equations of
physics.stackexchange.com
David Tong: String Theory
A Cambridge University course with lecture notes, providing an Introduction to string theory and conformal field theory.
www.damtp.cam.ac.uk
Bosonic string theory - Wikipedia
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