The first issue of Physical Review Letters September was released soon on the second Monday of September. As a mecca for the physics community, the Institute for Advanced Study in Princeton and the Department of Physics at Princeton University naturally subscribed to this core journal of physics. Therefore, I naturally received this issue of the journal from the editorial department of Physical Review Letters.

In fact, it is not only Princeton that has the first time in the water, as a world-class core journal, although the influence of Physical Review Letters is not as good as that of CNS, but it is also an international major journal, and it is a benchmark in the physics community. Therefore, the physics departments of all universities around the world, all physics institutes, and all large and small laboratories quickly received this journal from the editorial office of Physical Review Letters.

Originally, there were no outstanding papers or papers that could cause shock in this issue of Physical Review Letters in the world, but the difference is that an extraordinary paper appeared in this issue of Physical Review Letters, that is, "Discussion on the Graviton Problem Model of Supersymmetric Fermions and Boson String Theory", which shocked the world physics community at once.

Since the invention of quantum mechanics and the theory of relativity, scientists have never stopped pursuing the unification of the two. Fundamentally, the theory of unification is to unify the four forces of nature, electromagnetism, strong interaction, weak interaction, and gravity, in a theoretical framework. However, due to the problem of understanding the nature of gravity, after nearly 60 years, no one has been able to do it.

But even though no one did, countless theoretical physicists were still busy with this for the rest of their lives, until this paper appeared, which was the first theory to use quantum mechanics as the starting point, and the final result was in line with the theory of relativity. Thus shocked the entire physics community.

Department of Physics, California Institute of Technology.

At Caltech, physics has a long history and a strong vitality. However, in the physics department of Caltech, few people noticed what a professor named Schwartz was immersed in researching, and John Schwartz seemed to be invisible, with little communication with the outside world.

In fact, it is true that Professor John Schwartz is so obsessed with his research that he has little contact with the outside world, and even less since the rise of quantum chromodynamics. The only external communication is with Michael Green of Queen Mary College of London to exchange the latest research results.

"Miss Lawrence, has the latest issue of Physical Review Letters arrived?" The research has reached a bottleneck, and although he has barely come up with an idea, there is still a long way to go to solve this problem, so Schwartz is ready to take a break and change his mind while looking at the latest research results of his peers.

Emma Lawrence, 28 years old, a PhD student with Professor John Schwartz, just graduated this year and is temporarily working as a teaching assistant at Schwartz, a teaching assistant at Caltech.

"The postman has just delivered it, and I have taken a general look at it, and there is an article in it that you may be interested in." Lawrence was well aware of his mentor's personality, so he picked up some highlights and told Professor Schwartz.

"Oh, what's the name?"

"I found it, it is this article "Discussion on the Graviton Problem Model of Supersymmetric Fermion and Boson String Theory", which is consistent with your research direction, and I suggest ...... Professor, you? Before he could finish speaking, Lawrence felt a light in his hand, and the journal had been unceremoniously snatched by Professor Schwartz.

Schwartz didn't speak, in fact he opened the article and read it, completely ignoring what the beautiful assistant said.

"This is a theory that Shekel and I have been working on together for more than ten years, I thought that only me and Shekel were working on this theory, but I didn't expect that there was another person who was also working on it, and there were already results, which is really good." After a long time, Professor Schwartz put down the article and said a little wetly.

Over the years, Professors Schwartz and Scheker have joined forces to insist on the underappreciated theory of string theory, but it seems that this theory should not have appeared in this era, so that in the worst times, only Schwartz and Scheker are struggling to support it. It was only later when the concept of supersymmetry was introduced that the dawn of string theory was seen. However, when the dawn was just seen, Shekel died of illness, and he was the only one left who adhered to the string theory.

As a last resort, he found Michael Green of Queen Mary College of London to study together, and just had a clue to solve it, but he saw that someone was already one step ahead of them, and the feeling in his heart was suddenly complicated and indescribable.

"Miss Lawrence, I need the author's address and information, please give it to me as soon as possible!" Schwartz, who had finally calmed down, commanded.

"Yes, I'll collect these as soon as possible!" Lawrence nodded.

Schwartz didn't answer, but pulled open a drawer of his desk, pulled out a piece of stationery, and began to write.

"Dear Mr. Junxin......"

Princeton University, Department of Physics.

"Is it all here? Miss Nancy. Witten asked.

"It's all here!" A young woman, who is a teaching assistant to Professor Witten, replied, "I asked a few graduate students to help me, and I finally collected all the materials you wanted, and here you go." But what do you want to thank for the outdated material, Professor? ”

In the United States, many times teaching assistants are also teaching assistants, although it is the lowest of the four teaching positions, but it is also the most malleable, so each university will assign a teaching assistant to professors, not only to help professors deal with daily teaching matters, but professors are also obliged to take them into the teaching circle.

"Recently, when I was attending an afternoon tea discussion in the Department of Mathematics, I met a very interesting Chinese student, whose incredible imagination and logical and mathematical derivation ability shocked me, and he proposed a very interesting theory to me, which I think is very meaningful, so I am collecting information in this area." Witten replied with a smile, and his mind couldn't help but think of Jun Xin talking eloquently.

"Oh, by the way, he said that he had an article published in Physical Review Letters, and said that it is estimated that it will be in this issue, please go and get me another copy of this issue of Physical Review Letters!"

"No problem, Professor, I'll go now."