What is imaginary time ? What is quantum ultra distance sensing ?

First explain what is virtual time, virtual time belongs to the microscopic space-time described by quantum mechanics, mathematically speaking, the introduction of virtual time variables can explain some equations and phenomena, such as antimatter, dark energy, etc., from the philosophical point of view of physics, virtual time should be a dimension of space-time that composes matter, and it is a time dimension related to the formation and annihilation of particles that are constantly changing. As the saying goes, there are positive and negative states in everything.

Quantum mechanics and relativity theory can be said to be incompatible with water and fire, mainly manifested in general relativity and quantum mechanics, one believes that space is smooth, quantum theory believes that space is noisy and chaotic, the broad theory believes that the speed of light cannot be exceeded, and quantum theory has entanglement characteristics beyond the speed of light. The main contradiction is that the quantization of generalized i-relativity produces infinite quantities in physics, that is, generalized quantization is simply impossible. For many years, in order to unify quantum mechanics and generalized relativity, too many of the brightest brains on earth have been gathered, but they have not succeeded.

Real time is the time we can perceive, and imaginary time is the second dimension of time that we can't perceive, that is, the one dimension perpendicular to real time, and if imaginary time is considered, the space-time singularity predicted by general relativity will disappear.

A Brief History of Time mainly introduces people to what cosmology is and the latest development of cosmology. Since it is aimed at non-specialist readers, in order not to intimidate them, only one mathematical formula is put in the whole article, which is the famous Einstein mass-energy equation: e=mc 2.

The scientific progress of the last century is unparalleled.

A Brief History of Time expounds in the most popular language some of the oldest issues, such as:

What the universe is like.

The book does not give an answer to this question because science does not guarantee that there will be an answer to all questions. While we can't find a set of theories that explain the universe as a whole, we can divide the problem into many smaller pieces and invent many partial theories, each of which explains a limited scope while ignoring other influences.

This method has been very successful, for example, Newton's law of universal gravitation, as long as the mass of the planet is known, its orbit can be accurately calculated, and the structure of the planet, whether there is intelligent life on it, etc., can be completely ignored.

Thanks to the success of this approach, our understanding of the universe in which we live is a great step forward compared to that of the ancients.

Time is a dimension of four-dimensional space, which is independent and irreversible (time and space travel is not considered). Real time is the time we feel now; Imaginary time refers to the time that flows perpendicular to history, that is, the time of each person (small space) at this moment will be different due to the difference of personal speed, and time will slow down under the fast speed, which is the incompatibility of personal imaginary time and causes the change of personal real time, which is another kind of time and space shuttle.

Imaginary time is the study of the failure of time at the beginning of the universe, and constructs a kind of imaginary time axis that is 90 degrees to the time axis.

Personally, I don't think it's easy to understand what the North Pole is likely.

If you know anything about relativity, quantum physics, m-theory, etc., you can imagine it like this (completely inaccurate, just for ease of understanding):

The existing spatio-temporal model is two-dimensional, and the following model can be made that is very easy to understand.

1.The three-dimensional space is simply understood as a 10-centimeter straight line, with the starting point being a point in the positive direction of the y-axis of the coordinate axis and ending at 10 centimeters after the point.

2.The time is simply understood as a length of 10 minutes, starting from a point in the positive direction of the x-axis and ending at 10 centimeters after that point.

In this way, a space-time model is obtained: the x-axis is time, and one centimeter corresponds to one minute; The y-axis is the distance, and 1 cm represents 1 cm.

Now we introduce virtual time.

Suppose the previously made space-time model is built in a notepad on a desk, then the imaginary timeline z-axis is an axis perpendicular to the tabletop.

In this way, the timeline becomes a monitor-like time face.

The timeline can be thought of as a straight line similar to the diagonal of a monitor.

If we use the x-axis as a reference for time loss, then the timeline y-axis time lapse ratio is the same as the x-axis.

It is also understood that imaginary time is the same as real time at this moment.

But if you keep retreating along the x-axis to the origin, that is, just after the big **, due to other factors such as speed at that time, the timeline at that time is almost parallel to the z-axis of the imaginary time.

That is to say, even if you go back to the origin of the big **, the timeline still exists, but relative to the real timeline, it is a time singularity;

In fact, this so-called pole is still a timeline on the imaginary timeline.

Gorgeous dividing line.

If you still don't understand the above description, change the explanation from a philosophical point of view.

You're playing a game, and the universe is big since 0 A.D., and 100 billion years after the game, a physicist in the game starts studying physics.

It was concluded that the universe was 0 AD.

In fact, it only took you 2 hours from playing the game to 100 billion years after the game, and from the universe to the 99.9 billion years when the universe appeared, 1 minute passed in real time.

Relative to the physicist in the game, real time is a timeline of 100 billion years, which has no meaning before that.

And the big ** origin in the game is actually not the real time origin, but only the time origin relative to their world.

Real time can be understood as imaginary time relative to people in the game.

Imaginary numbers were originally solved in an equation similar to x 2=-1, and the solution obtained: i, relative to real numbers, imaginary numbers were first used as a tool to solve mathematical problems, with the deepening of mathematics, people apply imaginary numbers to geometric problems in coordinate systems, when it comes to physical significance, imaginary numbers are more suitable to be explained by discrete algebraic systems! The inverse of an algebraic system can help understand the significance of imaginary numbers relative to real numbers.

Imaginary time, on the other hand, is a physical tool built to better explain high-speed physics problems and microscopic worlds in the frame of reference!

The duel above is messing around, and there is no time difference. Moreover, the superluminal speed in the theory of relativity refers to the speed at which information and energy are transmitted. But quantum entanglement does not transmit any energy or information, so it does not violate the theory of relativity.

Don't put the macroscopic realm of relativity together with the microscopic realm of quantum mechanics, relativity is not suitable for describing the microscopic realm. Quantum entanglement must have a time difference, which cannot be measured with current technology. No object that violates the special theory of relativity can exceed the speed of light.

Quantum entanglement can transmit information, but only the information of the quantum channel, we cannot encode and decode, that is, the information cannot be read and written, and it is useless whether it is transmitted or not, and it must be combined with the information of the classical channel to be meaningful information. There are two kinds of people who advocate the transmission of information faster than the speed of light, one is full of ignorance, and the other is big foolishness.

Theoretically, it is possible to transfer over distance faster than the speed of light.

Paste it and say that quantum entanglement is not good.

**Type.

Science fiction fantasy. Introduction.

Dreams are obsessive and frightening at the same time! Dreams, when you are in it, you will find that you no longer have the standard and ability to distinguish between the real and the virtual! Let's take a look, Wonderland! The dream is opened, and the road continues!

I can't open the link given by the 3rd floor, and I personally think his statement is a little extreme. As far as I know, it's basically a more middle-of-the-road understanding. Both quantum entanglement and quantum information faster than the speed of light have experimental evidence.

The main question is whether quantum information is faster than light and what we often say cannot be faster than light. In fact, even in classical electrodynamics, the phase velocity of electromagnetic waves is allowed to exceed the speed of light, and something like a shadow can certainly exceed the speed of light, but since it does not transmit useful information, it is not considered a violation of the theory of relativity. You can also take a look at the reference I cited, which mentioned at the beginning that the most basic theory of quantum communication needs to transmit two parts of information, one is quantum information and the other is classical information, and only when these two parts of information are transmitted can the complete information be transmitted, and the transmission of classical information is still restricted by the speed of light.

The problem here is more unclear, it is true that there is information that is transmitted faster than the speed of light, but if there is no other auxiliary information, the things that are transmitted in the past are useless to us, which is a bit like the phase velocity of electromagnetic waves, but the quantum information transmitted in the past is indeed useful information, but it is incomplete. This brings us to the question of how to define information, which is itself a matter of ambiguity and debate.

All in all, there is no doubt that at least at this stage, theory and experimentation are not able to achieve truly complete faster-than-light transmission for the time being.

Do quanta have mass volumes? Does quantum have speed? If so, it will take time!

Hehe, if you ask me, I can't know, human beings can't solve this kind of problem now, maybe they will figure it out later! Don't listen to the guys downstairs!