The top-notch movie queen wears books, disguises herself as a man and is handsome all over the world

In physics, there is a law of increasing entropy, that is, in a relatively closed system, the entropy value may increase rather than decrease, and the direction of time passage is the direction of increasing entropy.

If the world we live in is fairly ordered and has fairly low entropy, then the fact that the universe is expanding suggests that the universe was once in a state with even lower entropy.

The second law of thermodynamics states that the entropy of a closed universe will never decrease. The most likely universe is one in which high-entropy matter is evenly distributed, but why is the entropy of the universe we can observe so low?

In this regard, Boltzmann proposed a conjecture: the low-entropy world we observe comes from the random fluctuations of the high-entropy universe.

These fluctuations can occur anywhere, including in our brains.

But the same fluctuations could cause a fully formed brain to suddenly appear in the universe, with all of our states of consciousness and memory, while the universe around it remains in a high-entropy heat death state.

Thus, this brain may give us an illusion that the laws of the universe we observe are real, when in fact, they may not exist. Our memories and consciousness may just be the product of this randomly fluctuating brain.

Just like Carter asked her at the beginning, asking her if she had seen Inception, and she replied that she had.

Just like illusion and reality, these two seemingly opposing philosophical and theological concepts seem to have found a new harmony and order with the intervention of physics.

It's not just Inception, it can even be linked to the ancient Chinese fable Zhuangzi's Dream of the Butterfly, which also involves the interweaving of reality and dreams. All of these point to a simple yet profound thought experiment: everything we perceive is nothing more than information transmitted to us through our five senses.

The unreliability of virtual experience and sensory information is one of the core issues of Boltzmann’s brain thought experiment.

Late at night, Qin Jingyu took off her glasses in front of her desk. Her notebook was filled with a lot of questions about the Boltzmann brain.

True and false, illusion and reality.

The concept of the Boltzmann brain explores the question of how a low-entropy state, such as an ordered brain, can spontaneously emerge from a high-entropy background, such as a chaotic universe, in thermodynamic equilibrium.

At this moment, Qin Jingyu's mind was thinking actively. The low entropy state of the universe alone was a very complex and profound problem, which involved many fields such as cosmology, thermodynamics and even gravity.

Carter had really given her an interesting subject.

-

Qin Jingyu was interested in this topic, but she was not in a hurry to contact Carter.

On Monday, she showed up in Professor Murphy's office as usual, and Parker and Steven also had their weekly progress report.

Professor Murphy was late today, and Parker helped to tidy up the desk, but Steven looked listless. It was the first time she saw him so lifeless since she met him.

She winked at Parker and asked what was going on.

Parker didn't care about Steven's fragile heart and said directly: "He, he's heartbroken."

"Broken heart?" Qin Jingyu was confused. "He has a girlfriend?"

Then why did he ask Carter to watch the game with him? He looks like a pervert.

"Of course she's not his girlfriend. If she was his girlfriend, he would have laughed his ass off even if they broke up." Parker gloated, "Carter rejected Steven's pursuit after watching the game. This morning, he heard from somewhere that Carter had booked a table at the Garden Restaurant to date a man. He was completely heartbroken."

The man who dated Carter at the Garden Restaurant yesterday scratched the back of his nose with a guilty conscience. "That was indeed heartbreaking."

As soon as he finished speaking, Steven suddenly hugged Qin Jingyu: "Qin, I'm sad. I'm so sad."

Qin Jingyu: "..."

Should she say something?

Forget it, just don’t say anything.

Parker looked normal, "When the professor comes, he will be fine."

Just as Parker said, from the moment Professor Murphy stepped into the office, Steven immediately became a different person, and he didn't look like someone who had just been heartbroken.

After Parker and Steven finished their weekly reports, Qin Jingyu handed the data that Professor Murphy had given her to organize last week to his desk. Murphy took a look and found nothing wrong with it.

Professor Murphy said: "You can start working on your paper on antimatter having the same gravity as ordinary matter."

Antimatter has the same gravitational force as ordinary matter, which is the latest model experiment conducted by Professor Murphy and Qin Jingyu.

Qin Jingyu was a little surprised, "Teacher, are you really going to give it to me?"

Murphy: "Why, you don't want to do it?"

"Of course not, it's just a little sudden."

"It's nothing sudden. I always give my students the greatest freedom in experiments. You did a great job on the homework I assigned to you last week. I'll leave all the finishing work to you. Try to write about the differences between ordinary matter and antimatter particles first. Show it to me when you're done."

"Okay, teacher."

It was right to insist on following Professor Murphy. Many graduate students were still helping their seniors in their first year of graduate school, but Professor Murphy was different. He would lead his students to do research from the beginning, and then slowly let go after he had developed a certain level of strength.

Professor Murphy had said before that he would not always have her on the project, but he didn't expect that he would let go so quickly.

Busy with finishing the experiment and writing the paper, Boltzmann put her brain aside for the time being, but when she had some free time, she would still study this hypothetical concept from time to time.

Carter was also very patient. As long as Qin Jingyu hadn't replied, she wouldn't take the initiative to look for Qin Jingyu. Even though they often went in and out of the laboratory, they hadn't met in half a month.

After Steven suffered a blow from Carter, he stopped mentioning the goddess recently and started concentrating on his experiments.

Back to the apartment

When I turned on my computer to look up information, I received an email.

When she clicked on it, she found that it was a reply to the submission of her paper about small desktop experiments to a C-type journal two months ago, which had been approved.

In fact, because there is a shortage of experimental papers of this type at present, Qin Jingyu does not need to wait too long for publication, and it can be published in another two months.

She smiled happily at the good news. Professor Murphy had said that once she had finished writing her experimental paper, it should be no problem to submit it to a D journal. However, she was reluctant when submitting it and wanted to try submitting it to a D journal first. However, she had not received any email reply for such a long time and was busy with experiments and organizing new papers, so she almost forgot about it.

-