What is Imaginary Time?

The idea of ​​imaginary time as an imaginary physics structure began with the rise of quantum cosmology by Hawking and other physicists. According to relativity, metric ds2 = -dt2 + dx2 + dy2 + dz2, describing the space time. When we consider the imaginary time, we see that the metric has become Euclid (the geometry we are used to) and therefore it is easier to handle. But the idea turned into other areas, one of the developments in this period of development and the universe was trying to solve the initial state of the Hawking-Hartyle theory. Remember, we don't like to be interested in the infinity of our reality, and according to general relativity, the Universe began in the event of an endless volume of matter. The Hawking-Hartyle theory says that imaginary time is a dimension of the Universe, which, as the Universe developed, behaves as if it had been foreseen forever. However, testing this was ignored as Hawking was impossible and therefore not a theory rather than a proposal.
The relation of real and imaginary time can be visualized as the vertical axes of the direction. Imaginary time is a concept derived from special relativity and quantum mechanics and is mathematically feasible in the connection of quantum mechanics to statistical mechanics. If we imagine ard normal time g as a horizontal line running between hay past çe and sayıl future g in another, the imaginary time runs perpendicular to this line as the imaginary numbers move perpendicular to the real numbers in the complex plane. Imaginary time is not fictitious in the sense that it is unreal or not, it works only in a different direction than the kind of time we live. In essence, the fictitious time is a way of looking at the time dimension as if it were an area dimension: you can move forward and backward through the imaginary time, just as you can move in space.
Now, this infinite state of the Universe I'm talking about needs this extra dimension, because it gives us a way to talk about a finite thing with no boundaries, a space as a conceptual example of Hawking. There are no borders, because we can expand physics and play with what we need, a system isolated from the actual space time used. So, as we know, the Universe started with the Big Bang, but it was just an imaginary time, and Hawking sought some stimuli to start our reality.

Different opinions
Now, assuming that imaginary time is a possibility, his imaginary title seems to have portrayed his role as a means rather than a reality. But imaginary numbers play a role in many branches of science, especially electronics. It would be a new way of talking about imaginary time, relativity and quantum mechanics. When we talk about this concept, we can have a hard time because of its distant and difficult use in singularity and dimensionality. We may need to think about it in a different, perhaps non-physical way, not spatially. I'm sure many of our physicists consider the instrumental approach rather than a full-fledged approach.
Some comments from Hawking's work seem to point to imaginary time as a solution to quantum tunneling problems. Some experiments show that the particles are likely to progress faster than c (speed of light), a clear violation of relativity. But scientists offer the idea that if imaginary time affects the motion of the particle? What if these causal readings are due to an unexceptional action that will not violate the laws we are used to? After all, quantum mechanics has imaginary components that are compelling to break it down.
An idea of ​​this can mean that imaginary numbers are a math game that has nothing to do with the real world. However, in terms of positivist philosophy, it cannot determine the real one. All we can do is find out which mathematical models define the universe in which we live. This implies that a mathematical model of imaginary time is not only the effects we observe, but also the effects we have not yet measured. Causes. So what is the truth and what is the dream? Is it just the distinction in our minds?
- Stephen Hawking
Imaginary time is also used in cosmology. It is used to describe the models of the universe in physical cosmology. In his book Brief History of Time, Stephen Hawking popularized the notion of imaginary time.
This concept is useful in cosmology because it can help correct the gravitational singularities in universe models that do not apply known physical laws. For example, the Big Bang appears as a singularity in tek normal time . For example; However, when imagined over time, the singularity is removed and the Big Bang works like any other point in space.

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