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iCANX第61期︱Johanna Stachel教授主讲通过大型强子对撞机探索宇宙大爆炸物质!

已有 740 次阅读 2021-7-23 06:53 |个人分类:国际交流|系统分类:科研笔记

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2021年7月23日晚 8:00(北京时间),大家期待已久的 iCANX Talks第61期即将重磅来袭,本期直播我们有幸邀请到海德堡大学的Johanna Stachel教授来到iCANX Talks讲座系列。


The highly expected iCANX Talks Vol.61 will be ceremoniously holed at 8:00 pm of July 23 (Beijing time). This time, we are fortunate to invite Professor Johanna Stachel from Physikalisches Institut der Universitaet Heidelberg to the iCANX Talks lecture series.


在前面60期iCANX Talks直播中,累计收看观众已经达到千万人次,受到了国内外专家学者的普遍好评和追捧,目前,iCANX Talks已经成为极具国际影响力的高科技云端学术峰会。


In the previous 60 weeks iCANX talks , it totally attracted close to 10 million audiences worldwide. iCANX has been highlighted by experts and audiences globally. Now, iCANX Talks already becomes a well-known and popular international high-tech online event.


话不多说,先让小艾给大家详细介绍重磅嘉宾及演讲内容吧!


Here comes the abstracts & Bios of today’s iCANX Talks!


报告介绍



Exploring Big Bang Matter with Collisions of Heavy Nuclei at the Large Hadron Collider


通过大型强子对撞机上的重核碰撞探索宇宙大爆炸物质


Johanna Stachel


Physikalisches Institut der Universitaet Heidelberg


海德堡大学物理研究所


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Abstract

In physics, we can trace back the development of the universe close to the Big Bang 13.7 billion years ago. Experiments at the Large Hadron Collider LHC at CERN allow to travel back in time and create in the laboratory matter as it existed between picosedonds and microseconds after the Big Bang. In this so-called quark epoc, the fundamental interactions had taken their present form but the temperature was still so high that the fundamental constituents of matter, the quarks and gluon were not bound in nucleons. This state of matter, the Quark-Gluon Plasma, can now be created in the laboratory in collisions of atomic nuclei at very high energies at the LHC. In the laboratory, it lives even much shorter than in the early universe, only the time it takes light to travel a few femtometers. Yet, with sophisticated experiments the properties of this entirely new and different state of matter can be studied. I will show how we can for instance measure its temperature, exceeding two hundred thousand times the temperature in the interior of the sun. And also how we can prove that the quarks are actually freed from their confinement into bound states like the proton.


在物理学中,我们可以追溯到 137 亿年前宇宙大爆炸附近的发展。在欧洲核子研究中心的大型强子对撞机 LHC 上进行的实验允许穿越时空并在实验室中创造出大爆炸后皮秒和微秒之间存在的物质。在这个所谓的夸克 epoc 中,基本的相互作用已经采取了目前的形式,但温度仍然如此之高,以至于物质的基本成分夸克和胶子没有束缚在核子中。这种物质状态,即夸克-胶子等离子体,现在可以在实验室中通过大型强子对撞机上极高能量的原子核碰撞产生。在实验室中,它的寿命甚至比早期宇宙中还要短,只有光传播几飞米所需的时间。然而,凭借精巧的实验可以研究这种全新的、不同的物质状态的特性。例如,我将展示我们如何测量它的温度,超过太阳内部温度的 20 万倍。以及我们如何证明夸克实际上摆脱了束缚,进入了像质子这样的束缚态。


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Biography

Johanna STACHEL studied chemistry and physics at the University of Mainz and the ETH Zuerich. She went to Stony Brook University in the US as Feodor Lynen Fellow in 1982 and was subsequently on the Stony Brook physics faculty until 1995. Since 1996 she has a chair a professor of experimental physics at Heidelberg University. Between 2003 and 2012 she acted as dean and vice dean of the faculty of physics and astronomy. She was the first female president of the 65000 member German Physical Society 2012-2014. Scientifically, Stachel is exploring the Quark-Gluon Plasma, a phase of strongly interacting matter that existed in the early universe and can be created in the laboratory in collisions of highly energetic nuclei. She had an important role in the construction of the ALICE experiment at the LHC and serves in important managing functions. She also made seminal contributions to the phenomenology of this field. For her work she has received numerous awards and medals and she is a member of several academies.


Johanna Stachel教授,德国海德堡大学物理研究所教授,海德堡大学物理和天文学学院院长,德国科学院院士,欧洲大型强子对撞机LHC-ALICE实验同步辐射探测器(TRD)项目负责人,ALICE执委会委员,BMBF研究重点项目发言人,Nucl. Phys. A高级主编,德国物理学会主席。曾任美国纽约州立大学石溪分校教授,欧洲核子研究中心SPS实验NA45/CERES发言人。发表了超过320篇学术论文,接受过250次学术邀请报告。1988 美国总统青年研究者奖 ; 1997 美国物理学会院士 (APS Fellow) 1997-2005 CERN SPS NA45/CERES 实验发言人 ;1998 德国柏林 - 勃兰登堡科学院院士 ; 1999 德国联邦十字勋章 ;2001 Lautenschläger研究奖 ; 2011 当选为德国物理学会主席。


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Keywords

Big Bang 宇宙大爆炸

Large Hadron Collider 大型强子对撞机

Heavy Nuclei 重核

Physics 物理学


同时,本次讲座也邀请了来自澳大利亚国立大学的Mahananda Dasgupta教授带来精彩的主持。来自北京天文馆的朱进教授、北京大学的宋慧超教授担任嘉宾,来自北京大学的付宝迟作为X挑战者,精彩不断,敬请期待!iCANX将继续努力,为科学交流服务,提供一个全球学术交流的顶级平台,敬请大家期待!will 


一期iCANX Talks直播结束后,都深受参会者好评,不仅为感兴趣的参会者和读者深度理解相关技术提供了帮助,也为研究生深入开展科研提供了一个很好的平台。更多精彩,尽在iCANX Talks !


收看直播请点击:www.ican-x.com

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