l**********t
发帖数: 5754 | 1 kudos to Higgs.
The Daily Telegraph
When Peter Higgs first proposed that an invisible field strewn across space
gave mass to the building blocks of the universe, the theory was ridiculed
by some of the most respected minds of the time.
His first paper was rejected by a journal, while other scientists accused
him and his colleagues of failing to grasp the basic principles of physics.
Despite the sleights Prof Higgs, at the time an 34-year-old physicist at
Edinburgh University, was convinced his i... 阅读全帖 |
|
b********n
发帖数: 38600 | 2 Peter Higgs, the physicist who first deduced and proposed the existence of
the theoretical field now known as the Higgs boson, does not believe in God.
After Leon Lederman, another nonbelieving physicist, had jokingly referred
to the mysterious boson as the “God particle,” Higgs was not happy: “I
wish he hadn’t done it. I have to explain to people it was a joke. I’m an
atheist.” The phrase became part of the title for Lederman’s 2006 book,
The God Particle: If the Universe is the Answer, What is... 阅读全帖 |
|
w*********r
发帖数: 2192 | 3 http://en.wikipedia.org/wiki/Introduction_to_M-theory
In non-technical terms, M-theory presents an idea about the basic substance
of the universe.
Contents
[hide]
* 1 Background
* 2 Status
* 3 See also
* 4 References
* 5 Books
* 6 External links
Background
In the early years of the 20th century, the atom – long believed to be the
smallest building-block of matter – was proven to consist of even smaller
components called protons, neutrons and electrons, which are known as
... 阅读全帖 |
|
q**w
发帖数: 782 | 4 http://physicsworld.com/cws/article/news/48126
Physics World reveals its top 10 breakthroughs for 2011
6th place: Taking the temperature of the early universe
Just after the Big Bang, the universe was a complicated soup of free quarks
and gluons that eventually condensed to form the protons and neutrons we see
today. Sixth place in our top 10 goes to a team of physicists in the US,
India and China that has made the best calculation yet of this condensation
temperature: two trillion degrees Kelvi... 阅读全帖 |
|
s****a
发帖数: 1039 | 5 Hydrocarbon fuel cell? 600 degrees Celsius. Large Hadron Collider? -271
degrees. Microwave drill? 2,000. Your run of the mill Core i7 MacBook Pro
can't compete with these extreme temperatures, but that won't keep it from
burning your lap. PC Authority recently put the latest edition of Apple's
sleek silver classic through a series of torture tests, and found that
running Cinebench could cause the CPU temperature to climb over 100 degrees
Celsius. The metal shell proved ineffective at dissipating |
|
T*********r
发帖数: 11175 | 6 【 以下文字转载自 Physics 讨论区 】
发信人: TechniColor (坚决服从rourou的领导), 信区: Physics
标 题: lHC
发信站: BBS 未名空间站 (Fri Dec 3 00:25:12 2010, 美东)
CERN large Hadron Collider with a 7 TeV center of mass energy (lHC)
这名字还挺有创意
今天的一篇文章 |
|
V******t
发帖数: 444 | 7 转一下这几个月来反复读过的文章。
http://www.zhihu.com/question/24308741/answer/27390020
在基础科学应该缩小招生规模吗？问题中看到了一篇文章
Don't Become a Scientist!
题主比较在意的几个主要观点：
1、科研人员数量过多，现今很难在大学谋得满意职位，常常接近40岁都无法成为大学
正式职员。
2、成为正式职员前，只能打工，无法完成自己兴趣的课题。
3、成为正式职员后，科研沦为如何讨好资助者的工作。
这篇文章所言是真？科研工作真的如此惨淡吗？
Forsoul Coz，研究最小的对象，思考最大的问题
写在前面的话
这个问题是我这几年思考较多的，题目中的文章甚至在我本科毕业前就读过多遍，如今
再次看到相关讨论，感慨万千。
我想把我这两三年来的思考和观察整理一遍，供各位参考。答案免不了有主观成分，希
望各位聚焦在事实部分，不要纠结于观点部分。每个科研人对这个问题都会有自己不同
的答案。至于科研圈子外的，权当是看了个行业八卦好了。很多事情，都是小马过河，
非亲历者不足道也。有志科研的，无志科研的，都不应该被外界的说法所左... 阅读全帖 |
|
j**********e
发帖数: 1034 | 8 In the distraction of the scandal-fever swirling through Washington and the
news media, you might have missed the announcement the other day that one of
the great puzzles of number theory had been solved.
What makes the news most fascinating is that the solver isn’t on the
faculty of a top university and wasn’t known until this month to others who
work in the field. He is a Chinese immigrant in his 50s named Yitang Zhang,
a onetime accountant and part-time lecturer at the University of New
Hamps... 阅读全帖 |
|
R****i
发帖数: 2387 | 9 Theoretische Untersuchungen über den Schmelzpunkt kleiner Kügelchen
Ein Beitrag zur Thermodynamik der Grenzflchen
Karl -Joseph Hanszen
Zeitschrift für Physik A Hadrons and Nuclei, Volume 157, Number 5 / 1960年
10月
简单来讲就是K-J.Hanszen, Z.Phys. 157, 523(1960).
搞不好是德语的，那就只能看看图了。。。 |
|
a***r
发帖数: 146 | 10 On Tuesday, March 27, there was a serious failure in a high-pressure test at
CERN of a Fermilab-built “inner-triplet” series of three quadrupole
magnets in the tunnel of the Large Hadron Collider. The magnets focus the
particle beams prior to collision at each of four interaction points around
the accelerator.
Safety precautions were followed during the test, and no one was injured.
A full investigation of the failure is underway, but preliminary indications
are that structures supporting the in |
|
J*******3
发帖数: 1651 | 11 [LHC] 大型强子对撞器，倒数 25 天
位于瑞士日内瓦，归欧洲核子研究组织 CERN 管辖的大型强子对撞器（Large
Hadron Collider, LHC）将于 25 天后正式启用，并开始加速粒子。首次撞击将在启用
后约两个月实行。LHC 启用后将是世界最强大的高能粒子加速器，加速的质子流可以携
带高达 7 TeV（兆电子伏特）的能量，也就是说对撞时的总能量高达 14 TeV，约是目
前最强的对撞器 Tevatron 的 14 倍。然而，建造这样的撞击器花费实在太高（LHC 预
计花费在 50~100 亿美元之间，详细还在计算），而且撞击器除了纯粹的科学用途之外
没有别的用途，短时间内 -- 甚至你我的一生内 -- 都不见得能见到一台更大的撞击器
了。唯一再建造下去的理由，就是 LHC 能证明有更多更重要的粒子藏在标准模型所到
不了的地方，只有更强力的撞击器才能撞出解答来。但即使是那时候，应该把这钱花在
科学上，还是花在改善民生经济上，恐怕又是一个没有结局的争论吧！
LHC的主要任务，是要设法撞出传说中的「神之粒子」希格斯玻色子。当撞击的能
量愈来愈高时，粒子的状态会愈来愈接 |
|
d*b
发帖数: 21830 | 12 If you still not in your candidacy, that means you are too late to catch
up LHC train.
please prepare for the next hadron collider. |
|
d*b
发帖数: 21830 | 13 我其实也会这么说，这书泛泛而谈，具体的都没说，等做了研究回过头来看看就很有体
会了。还有就是这书虽然是85年的，但有关hadron的介绍非常少。作为基本教科书还可
以，但作为学习和研究之间的桥梁的话，还是差很多。
总之，物理学教育衰退很明显，现在书架上基本没有一本能反应90年代粒子物理研究成
果的教科书。 |
|
b*****d
发帖数: 271 | 14 peskin现在在开 Particle Physics at the Large Hadron Collider
教材用的是 QCD and Collider Physics |
|
q*d
发帖数: 22178 | 15 你这么喜欢打脸?那就只好小打一下你的脸了:
按Yang的selected papers:
63e the Mass formula of SU3
64f K介子CP破缺唯象分析
65a
66b
66h
...
80a Geometrical Model of Hadron collisions
粗粗数了一下,33篇文章里16篇高能的.
你指定特象做TDLee的gay伴侣 |
|
w****1
发帖数: 4931 | 16 It was a joke. Don't get so serious on it. Of course string theory is right.
Actually, string theory was first proposed to be a theory describing mesons
and hadrons. It was then thought to be the wrong theory for strong
interactions. And then it was thought to be the right theory to describe
everything. And now, apparently, it was never wrong.:) |
|
T*********r
发帖数: 11175 | 17 那种钱，你可以直接让她给交了应该
不过什么summerschool怎么还要钱阿
从来没听说过这种要registration的
那个cern-fnal hadron collider？我参加过第一届
我。 |
|
a***r
发帖数: 594 | 18 dude,
3 generations of leptons
3 generations of hadrons dude
+ the bossons that mediate the interactions |
|
|
a***r
发帖数: 594 | 20 sorry, 3 generations of quarks which make up the hadrons. |
|
T*********r
发帖数: 11175 | 21 u，d几乎是massless，所以叫unflavor
下一个重的s都上百个mev
到了b都4gev了
因为qcd的coupling在这些scale差的很大
所以pion的hadronization和B_s这样的还是不同的
J,B_s之类应该是可以按照pertubative qcd算 |
|
T*********r
发帖数: 11175 | 22 那你来讲吧
很多hadron的东西，我不熟悉
比如那个g parity
到今年eschong的同学写了篇东西才听到 |
|
T*********r
发帖数: 11175 | 23 找不到课本的话，免费的材料网上很多，不如buras的review
不论这些operator怎么rge evolve的还是hadronic matrix element最后该怎么弄都有 |
|
T*********r
发帖数: 11175 | 24 CERN large Hadron Collider with a 7 TeV center of mass energy (lHC)
这名字还挺有创意
今天的一篇文章 |
|
w****1
发帖数: 4931 | 25 When Lenny Susskind was a young physicist he met Gell-Mann in the elevator.
Gell-Mann asked Lenny, "what
do you do?" Lenny replied, "I'm working on this theory that hadrons are like
rubber bands, these one-
dimensional stringy things". Gell-Mann broke out laughing.
Fortunately, Lenny wasn't the type of person who does "science" by copying
the opinions of so-called
"experts". |
|
g****g
发帖数: 1828 | 26 March 15, 2011 | 4:34 am
CMS scientists observed an excess in their data consistent with the
production of single top quarks after combining just a couple of variables.
Image courtesy of the CMS Collaboration.
CMS scientists observed an excess in their data consistent with the
production of single top quarks after combining just a couple of variables.
Image courtesy of the CMS Collaboration.
For the first time, scientists at the Large Hadron Collider have spotted
single top quark production.
It ... 阅读全帖 |
|
|
d*b
发帖数: 21830 | 28 LHC is planning Run 2 upgrade. It is time to get more tax money. You know
the rest story... |
|
t******n
发帖数: 6242 | 29 果然这次只有两个粒子物理理论学家，实验物理学家们都做嫁衣裳了。
发包子啦！
Franois Englert
Peter W. Higgs
The Nobel Prize in Physics 2013 was awarded jointly to Fran?ois Englert and
Peter W. Higgs "for the theoretical discovery of a mechanism that
contributes to our understanding of the origin of mass of subatomic
particles, and which recently was confirmed through the discovery of the
predicted fundamental particle, by the ATLAS and CMS experiments at CERN's
Large Hadron Collider" |
|
t******n
发帖数: 6242 | 30 果然这次只有两个粒子物理理论学家，实验物理学家们都做嫁衣裳了。
发包子啦！
Franois Englert
Peter W. Higgs
The Nobel Prize in Physics 2013 was awarded jointly to Fran?ois Englert and
Peter W. Higgs "for the theoretical discovery of a mechanism that
contributes to our understanding of the origin of mass of subatomic
particles, and which recently was confirmed through the discovery of the
predicted fundamental particle, by the ATLAS and CMS experiments at CERN's
Large Hadron Collider" |
|
z**********g
发帖数: 16 | 31 前言：中国大陆的庄一龙先生独创了斥力子理论，可以用来解释爱因斯坦未能解释的疑
难问题，目前已经得到国内科学界某些人的关注，有兴趣的科学界人士可以了解一下斥
力子的基本理论。
我是庄一龙的朋友，目前暂时在美国居住，受其委托，在本站发表他的文章，因为未名
网站在国内是被屏蔽的。
如果想进一步了解该理论，请在网上留言，我会和您联系的。
下面我把对这个理论的大致介绍发表在这里。
2010年12月)中国科学院《科技促进发展》杂志文章：
斥力子理论
撰文 张宇
上海科技管理干部学院庄一龙副教授所创立的“斥力子理论”是一种物理哲学理论，该
理论认为，地面的物体一旦动起来，不管方向如何，都具有一种挣脱地球引力的能力，
就好象物体吸收了一种对抗万有引力的物质。
该理论把普朗克能量子看作是一种具有对抗万有引力能力的实物粒子，称它为“斥力子
”，并认为物体运动状态的改变，就是由于吸收或释放斥力子造成的，作用力的过程是
实实在在的物质转移过程，通过斥力子的转移，斥力子所具有的质量、能量、动量就会
叠加到速度增加的物体上去，造成运动物体的相对性效应。反引力实物能量粒子的引入
，打破了物理学理论的“引力论”框架，... 阅读全帖 |
|
z**********g
发帖数: 16 | 32 继续发表有关斥力子的文章，请指正。
“斥力子理论”对物理学的影响1
庄一龙
近年来，由中国学者创立的“斥力子理论”，经过中国科学院《科技促进发展》《
科技成果管理与研究》、《科技中国》、《中国科技财富》、《中国科技成果》等主流
科技杂志报导后，引起了学术界广泛重视。那么，这一理论究竟有那些观点震动了学术
界，值得人们如此关注呢？
“斥力子理论” 是一种新物质作用理论，实际上也是一种物理哲学理论。它的代
表性文章是《论“斥力子”的存在及其意义》，另外还包括《相对性效应和牛顿定律的
本质》、《物理学中精细结构常数的理论推导与解释》等几十篇论文。同牛顿的苹果从
树上掉下来的万有引力理论相对应，这是一个可称作“苹果如何转移到树上去的‘万有
斥力’理论”。该理论认为，地面的物体一旦动起来，不管方向如何，都具有一种挣脱
地球引力的能力，就好象物体吸收了一种对抗万有引力的物质那样。“斥力子理论”把
普朗克能量子看作是一种对抗引力的实物粒子，称它为“斥力子”，并认为物体运动状
态的改变就是由于吸收或释放斥力子造成的。
在思维方法上，它有两个根本突破：其一,是把抽象的能量概念实物化，使能量有
一个实物载... 阅读全帖 |
|
s*****V
发帖数: 21731 | 33 https://www.quantamagazine.org/20150514-the-particle-that-broke-a-cosmic-
speed-limit/
On the night of October 15, 1991, the “Oh-My-God” particle streaked across
the Utah sky.
A cosmic ray from space, it possessed 320 exa-electron volts (EeV) of energy
, millions of times more than particles attain at the Large Hadron Collider,
the most powerful accelerator ever built by humans. The particle was going
so fast that in a yearlong race with light, it would have lost by mere
thousandths of a hair. I... 阅读全帖 |
|
s*****V
发帖数: 21731 | 34 quanta magzine
https://www.quantamagazine.org/20150922-nima-arkani-hamed-collider-physics/
Still, many physicists, Arkani-Hamed chief among them, seek a more
definitive answer. And right now, his quest to answer the naturalness
question leads through China. Two years ago, he agreed to become the
inaugural director of the new Center for Future High Energy Physics in
Beijing. He has since visited China 18 times, campaigning for the
construction of a machine of unprecedented scale: a circular parti... 阅读全帖 |
|
P*****s
发帖数: 375 | 35 A nice interview I just read is being shared with you guys here. :)
[ref]
http://fionarawsontile.blogspot.com/2015/09/interview-with-dr-x
Interview with Dr. Xi Yin
By Fiona Rawsontile, Sept 2015
This interview was inspired by an earlier interview of Dr. Yin I saw on the
Internet, which made me think that we can’t expect someone who normally
writes for entertainment to understand a physicist. To “provoke” a
scientist, we need another scientist. So I volun... 阅读全帖 |
|
s*****V
发帖数: 21731 | 36 【国家科学评论】NSR访谈｜王贻芳：从中微子研究看中国高能物理发展
2016-08-24|文章来源：NSR |浏览次数： |【大 中 小】
2012年3月8日，中国科学院高能物理研究所所长王贻芳代表大亚湾中微子研究团队
宣布，发现中微子第三种振荡模式，被称为“中微子研究道路上的里程碑”。然而王贻
芳和他的团队显然并不止步于此：正在建设的江门中微子实验基地将自主研制更大的探
测器并预计于2020年建成开始运行，届时中微子的质量顺序有望在实验中测出，成为中
微子研究的下一个重大突破。
实际上，几十年来包括美国、欧洲、日本、中国，都在试图寻找中微子并弄清它精
灵古怪的“脾气”。科学家相信，中微子的深入研究将揭示宇宙演化的重大问题，比如
为什么我们的宇宙只大部分是物质而不是反物质等。
这并不容易。虽然时时刻刻都有中微子像无数的流星一样划过天际，穿越我们的地
球和身体，但它们非常轻，而且调皮，难以抓住。中微子还有三种“味道”，即电子中
微子νe，缪中微子νμ，陶中微子ντ，要搞清楚“三种味道如何混合”，每种中微
子的绝对质量多少，以及更多的相关问题，难度可想而知。
然而在王贻芳看来，中微子研究虽... 阅读全帖 |
|
t*******y
发帖数: 11968 | 37 【 以下文字转载自 Investment 讨论区 】
发信人: talkdirty (Large Hadron Collider), 信区: Investment
标 题: 请问有没有调查fund manager背景的网站?(包子重谢)
发信站: BBS 未名空间站 (Tue Apr 21 22:55:35 2009)
我需要调查一些fund manager的背景, 请问有没有专营此项业务的网站? 谢谢
或者有没有其他source.
另外,请问哪家服务商cover这几个fund的report: JGT, GDL, ZTR. 谢谢 |
|
l**n
发帖数: 67 | 38
for the quark gluon plasma, you can go to CERN webpage for more
infomation. Just look for experiment NA45, NA49, NA50. or go to RHIC
homepage (a experiment in Brookhaven National Lab).
in simple word, quark matter is just to deconfine the quarks from
hadron volume to the extended volume of the entire atomic nucleus.
Now there are some stong hint that quark gluon plasma exists at
high energy density(T>>T_sun).
They count the number of the J/psi particles produced in the lead-lead
collision(NA50) |
|
q*******u
发帖数: 1405 | 39 【 以下文字转载自 Faculty 讨论区 】
发信人: Highly (高妹), 信区: Faculty
标 题: 我为尹希教授做的专访
发信站: BBS 未名空间站 (Wed Sep 23 14:31:24 2015, 美东)
Interview with Dr. Xi Yin
--- By Fiona Rawsontile, Sept 2015
This interview was inspired by an earlier interview of Dr. Yin I saw on the
Internet, which made me think that we can’t expect someone who normally
writes for entertainment to understand a physicist. To “provoke” a
scientist, we need another scientist. So I volunt... 阅读全帖 |
|
p****y
发帖数: 23737 | 40 〈數學是發明還是發現？〉
◎文╱利維歐（Mario Livio）▌譯╱翁秉仁▌提供/科學人
大多數人認為數學有用是理所當然，像是科學家以數學公式來描述次原子事件、工程師
用數學計算太空船的路徑。我們接受最先由伽利略倡議的觀點：數學是科學的語言，其
文法可以解釋實驗結果，甚至預測奇特的現象。數學驚人的威力處處可見，譬如蘇格蘭
物理學家馬克士威（James Clark Maxwell）的著名方程組，他的四個算式不只總結了1
860年代所有已知的電磁現象，並且預示了無線電波的存在，比德國物理學家赫茲（Hei
nrich Hertz）偵測到它還早了20年。極少語言這麼有效率，能將具有價值的眾多材料，
如此簡潔、精確又清楚地表達出來。愛因斯坦曾反思說：「數學做為人類思想的產物，
獨立於經驗之外，怎麼可能和現實世界配合得如此天衣無縫？」
身為一位理論天文物理學家，我在每一個工作環節都會遇到「數學不合理的有效性」（
unreasonable effectiveness of mathematics），這是1960年諾貝爾物理獎得主魏格納
（Eugene Wigner）的用語。不論我是在研究哪些前身恆... 阅读全帖 |
|
|
