Do strings move in spacetime ?

In summary, it is a feature of continuum math that the base manifold can expand and the Calabi-Yau manifolds adjust accordingly. The strings, which are at a larger scale than the Planck length, change their vibrational shape to accommodate movement and changing matter. This is what we see as objects moving, but it is actually the strings changing shape at a very small scale and fast rate. The quantum wave function of a particle comes from the vibration of the string and one string can affect multiple particles due to superposition.
  • #1
RingoKid
192
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Do strings move in spacetime ?

If at every Planck size point in spacetime there is a Calabi-Yau manifold.

Do the manifolds move with the expansion of the universe so that the strings always have a constant vibrational pattern that determines their effect/elemental property or are the manifolds fixed in postion such that the strings change vibrational shape to accommodate movement and changing matter.

What we see as objects moving is actually strings changing shape but at such a small scale and so fast that we only see fluid motion at a minimum of 25 frames per second.

Does that make sense ?
 
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  • #2
RingoKid said:
If at every Planck size point in spacetime there is a Calabi-Yau manifold.

Do the manifolds move with the expansion of the universe so that the strings always have a constant vibrational pattern that determines their effect/elemental property or are the manifolds fixed in postion such that the strings change vibrational shape to accommodate movement and changing matter.

What we see as objects moving is actually strings changing shape but at such a small scale and so fast that we only see fluid motion at a minimum of 25 frames per second.

Does that make sense ?

It is a feature of continuum math that the base manifold can expand and the C-Y manifolds adjust accordingly. Think of the example of a line (one dimensional euclidian space, denoted R1) with a circle standing in for the C-Y (one dimensional sphere denoted S1). The combined space is dentoted R1 x S1 and called the cartesian product of the two. Now imagine that R1 expands; every length x between two points of it becomes, say 2x. In fact all the expansion takes place within the R1 itself, and we still have R1 x S1, no problem.

You are roughly right about the cause of motion. Strings are not at the Planck scale but at a somewhat larger scale; Planck length is just as small with respect to a string as a string is to us. Particles are not in one-and-one correspondence to strings; the quantum wave function of the particle comes from the vibration of the string, and one string can do more than one particle because of superposition.
 
  • #3


The concept of strings moving in spacetime is a complex one that is still being explored and studied by physicists. According to the theory of string theory, strings are one-dimensional objects that vibrate at different frequencies, giving rise to the different particles and forces that make up our universe. These strings exist in a 10 or 11-dimensional spacetime, which is much larger and more complex than the four dimensions (three of space and one of time) that we experience in our everyday lives.

As for whether or not strings actually move in spacetime, it depends on the interpretation of string theory. Some interpretations suggest that strings are fixed in position and only vibrate at different frequencies, while others propose that strings can move and interact with each other in spacetime. Additionally, the idea of Calabi-Yau manifolds suggests that strings are wrapped around these higher-dimensional shapes, which could potentially move with the expansion of the universe.

However, it is important to note that string theory is still a theoretical framework and has not been proven experimentally. It is also possible that other theories, such as loop quantum gravity, may provide a different explanation for the behavior of particles and forces in the universe. Therefore, it is difficult to definitively say whether strings do or do not move in spacetime.

In regards to your question about the vibrational patterns of strings and their effect on matter, it is important to keep in mind that the behavior of strings is governed by mathematical equations and is not directly related to the movement of matter. While the vibrations of strings may play a role in shaping the behavior of particles and forces, it is not accurate to say that strings change shape in order to accommodate movement and changing matter.

In conclusion, the concept of strings moving in spacetime is a complex and ongoing area of study in physics. While some interpretations of string theory suggest that strings may move, it is not a universally accepted idea and is still being explored by scientists. It is important to continue researching and experimenting in order to gain a better understanding of the fundamental building blocks of our universe.
 

1. How do strings move in spacetime?

Strings move in spacetime by vibrating and oscillating at different frequencies. These vibrations and oscillations create different particles and forces in the universe.

2. Can strings move faster than the speed of light?

No, strings cannot move faster than the speed of light. According to the theory of relativity, the speed of light is the maximum speed at which any object can travel in the universe.

3. Do strings have a specific shape or size?

According to string theory, strings do not have a specific shape or size. They are considered to be one-dimensional objects, meaning they have length but no width or height.

4. How do strings interact with other particles?

Strings interact with other particles through their vibrations and oscillations. These interactions can create different types of forces, such as gravity, electromagnetism, and the strong and weak nuclear forces.

5. Are strings a proven scientific concept?

String theory is still a highly debated and speculative concept in the scientific community. While it has not been proven, it is a promising theory that could potentially unify all of the fundamental forces in the universe.

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