セミナー・特別講義

2008年度

 

GCOE PD成果発表会

GCOE PD成果発表会
日時
2009年 3月18日(水曜日) 10:30−14:20
場所
理学部 5号館 第4講義室 (525号室)
プログラム
10:30 Dominikus Heinzeller
CEPD - Chemical Evolution of Protoplanetary Disks
10:55 梅田 貴士
有限温度格子QCD研究の新しいアプローチの可能性
11:20 佐合 紀親
ブラックホール時空中を運動する質点に働く自己力問題について
11:45 大谷 一人
高強度極短パルスレーザーによる高エネルギーパルスイオンの生成
12:10 昼休み
13:30 日高 義将
極限状態におけるQCD物質
13:55 戸田 亮
微量3Heを含む4He固体のねじれ振り子とNMRの同時測定

※町田 正博(当日出張のため欠席)

物理学第一特別講義4
Graduate Course in Physics, Special Lecture 4

グレン・パケット博士
(パケットリサーチ、米国)

"English Scientific Writing"
Dr. Glenn C. Paquette
(Paquette Research, USA)

-----------------------------------------------------------------
Dates and Time (2008)
Homework for enrollment: due on September 16 (Tue.).
Lectures (all at 16:30-18:00):
Oct. 3 (Fri.), Oct. 6 (Mon.), Oct. 9 (Thu.), Oct. 10 (Fri.)
Oct. 20 (Mon), Oct. 27 (Mon.), Oct. 30 (Thu.), Oct. 31 (Fri.)
Interviews: Oct. 7 (Tue.) and 29 (Wed.)

Place: 4th Lecture Hall (Room 5-525, 5F), Department of Physics

Course Enrollment:
Course credit (履修単位) of two units will be given to master-course students who
complete this class. Doctor-course students and researchers are also welcome to attend.
Those who wish to enroll in the course must complete and turn in the following homework,
which will be used to select students in the case that the number of applicants exceeds
the class limit.

Homework for enrollment(履修登録する修士課程院生用):
Write (in English) a 1--2-page essay on one of the following:

1. Your senior thesis.
2. Your present research.
3. Existing work in a field in which you are interested.
The essay should be written for an expert audience and provide as thorough and detailed
an understanding as possible. Even if it is not original work, it should be written
in the form of a paper for publication, as if it were original work. This homework is
due on September 16 (Tue.), 2008. E-mail it to me (GCPaquette(at)cs.com) and Prof. Maeno
(maeno(at)scphys.kyoto-u.ac.jp) as an attachment in pdf and tex formats.

Contact:前野悦輝 Y. Maeno (Ext: 3783, maeno(at)scphys.kyoto-u.ac.jp)

 

セミナー

GCOEセミナー
title
Crystalline ion beams and the ordered state of ions
author
Professor Alexander Smirnov(Joint Institute for Nuclear Research, Dubna, Russia)
date
2009年2月10日(火)10:30〜12:30
place
化学研究所・イオン線形加速器実験棟 2階会義室
abstract
The idea of crystalline beam has a large interest now. The achievement of the very low temperature in the beam rest frame gives new possibilities in the accelerator physics. The ordered state of circulating ion beams was observed on a few storage rings in the world. The ordered state of the proton beam was observed at S-LSR storage ring (Kyoto University). Theoretical and numerical investigations were done for the formulation of necessary conditions for the achievement of the ordered state. Up to now the 2D and 3D crystalline beams were not observed in real storage rings. One of the research subjects of S-LSR is a test bench to produce crystalline beams of Mg ions under the action of the laser cooling. The S-LSR lattice structure was especially elaborated for the formation of 3D crystalline beams.
contact
野田章(Akira Noda、noda@kyticr.kuicr.kyoto-u.ac.jp・内線番号17(宇治)3281)
note

GCOE・基研共催セミナー
title
Variational calculation of the K-pp system with chiral
author
Akinobu Doté 土手 昭伸  (IPNS, KEK 高エネルギー加速器研究機構 素粒子原子核研究所)
date
2009年1月28日(水)午後4−6時
place
京都大学 基礎物理学研究所 研究棟・会議室 K206
abstract
Kaonic nuclei (nuclear systems with a strongly bound anti-kaon) have recently become a hot topic in hadron and nuclear physics when it was suggested, using a simple phenomenological KbarN potential model [1], that they might exist as deeply bound states with small width. However, experiments performed in search for such states [2] have so far been inconclusive. An important prototype system for such investigations is K-pp, the simplest Kbar-nuclear cluster. Recently this system has been studied using Faddeev [3] and variational [4] approaches with KbarN interactions constrained by phenomenology and properties of the Λ(1405).
In this seminar, first, some brief introduction on kaonic nuclei will be given. Then, we present an improved variational calculation [5] of the K-pp system with realistic interactions as input:
・the Argonne v18 potential with its strongly repulsive short-range core as a realistic NN potential reproducing NN scattering and deuteron data;
・an updated effective KbarN interaction based on chiral SU(3) coupled-channel dynamics [6] which reproduces scattering data in the S=-1 meson-baryon sector and dynamically generates the Λ(1405) as an I=0 KbarN quasibound state embedded in the resonant πΣ continuum. This interaction is translated into the form of an equivalent single-channel, complex and energy dependent KbarN potential.
In addition, we will show other effects not included in the above calculation: 1. dispersive correction, 2. p-wave KbarN interaction, and 3. two-nucleon absorption. Taking all of these effects into account, the K-pp system turns out to be shallowly bound with large decay width: B(K-pp) = 20 - 40 MeV and Γ_total = 55 - 120 MeV.
Our calculation shows that the K-pp system is rather weakly bound, comparing to the previous calculations [3,4]. I'll explain the reasons of such a difference between our results and previous ones. If I have a time, I'd like to give some comments and discuss on the very recent experimental result [7] which seems to indicate the existence of deeply bound K-pp system.
The contents of this seminar are summarized in the latest our paper [8].
[1] Y. Akaishi and T. Yamazaki, Phys. Rev. C65, 044005 (2002).
[2] T. Suzuki et al., PL B 597, 263 (2004); M. Agnello et al., PRL 94, 211303 (2005).
[3] N. V. Shevchenko, A. Gal, and J. Mares, Phys. Rev. Lett. 98, 082301 (2007).
Y. Ikeda and T. Sato, Phys. Rev. C76, 035203 (2007).
[4] T. Yamazaki and Y. Akaishi, Phys. Rev. C76, 045201 (2007).
[5] A. Dote, T. Hyodo and W. Weise, Nucl. Phys. A804, 197 (2008).
[6] T. Hyodo and W. Weise, Phys. Rev. C77, 035204 (2008).
[7] T. Yamazaki et al., arXiv:0810.5182 [nucl-ex], proceedings of EXA'08.
[8] A. Dote, T. Hyodo and W. Weise, Phys. Rev. C79, 014003 (2009).
contact
基礎物理学研究所 延与 佳子(Yoshiko Enyo 内7029)
note
このセミナーは京都大学基礎物理学研究所と京都大学理学研究科グローバルCOEプログラム 「普遍性と創発性から紡ぐ次世代物理学」の共催で行われます。
基研HP参照:http://www.yukawa.kyoto-u.ac.jp/contents/seminar/detail.php?SNUM=50724

GCOEセミナー
title
Enzyme Mediated Membrane Restructuring: An Interplay Between PLA2 Activity And Membrane Organization
author
Assistant Professor Chad Leidy(Department of Physics, Universidad de los Andes, Bogota, Colombia)
date
2008年1月21日(水曜日)16:00〜
place
理学研究科5号館 5階 第4講義室(525号室)
abstract
The hydrolytic activity of phospholipase A2 is only triggered at the interface between water and the membrane surface. This hydrolytic process involves the breakdown of phospholipids to produce free fatty acids and lysolipids. PLA2 hydrolysis generates a steady modification of lipid composition that strongly influences membrane structure and organization. For this reason, this enzyme is considered to act as a membrane-restructuring agent. In addition, several physical aspects of the membrane, such as domain formation and lipid phase behavior, may increase enzyme activity by reducing the level of lipid packing, making the physical state of the membrane the main regulator of enzyme activity. The interplay between the physical properties of the membrane and PLA2 activity results in several interesting traits such as directed membrane restructuring, triggering and inhibition of enzyme activity, and enzyme mediated modulation of membrane rigidity. We explore several of these aspects in model and cell membranes and relate the findings to physiologically relevant processes such as bacterial resistance to antimicrobial activity and platelet clotting.
contact
吉川 研一(Kenichi Yoshikawa)
yoshikaw@scphys.kyoto-u.ac.jp, ext.3812
note

Global COE 談話会
title
Knowledge of Knowledge: Widely Interdisciplinary Research
author
Professor Piet Hut (プリンストン高等研究所)
date
2009年1月15日(木)午後4−6時
place
基礎物理学研究所 パナソニック国際交流ホール
abstract
Many of the most interesting problems in current scientific research require interdisciplinary collaborations, spanning a large number of disciplines. From cognitive science and systems biology to environmental studies and challenges like critical evaluations of alternative medicine, we need teams of specialists to talk and work together. However, differences in culture and methodology provide significant barriers for broadly interdisciplinary collaborations. Each discipline has its own approach to knowledge, but because this knowledge is shared within the discipline, most researchers are not aware of the hidden assumptions involved. It is a kind of tacit knowledge, something you learn as a student, without any specific discussion or critical analysis. What is needed for broadly interdisciplinary studies is not only an increase in knowlege, but rather a focus on knowlege of knowledge. What do we know about the limits of how we know? This is the central question that will be addressed in this lecture.
contact
嶺重 慎(Shin Mineshige, shm@kusastro.kyoto-u.ac.jp, ext.3901)
note

Global COE 談話会
title
Low Energy Constants of the Chiral Perturbation Theory from the QCD instanton vacuum model
author
Mirzayusuf Musakhanov (Uzbekistan National University)
date
2009年1月14日(水)午後4時〜
place
京都大学 基礎物理学研究所 湯川記念館・大会議室 Y206
abstract
In the framework of the instanton vacuum model it was derived the partition function for the light quarks. We make expansion over the current mass $m$ and number of colors $N_c$ and evaluate ${\cal O}(1/N_c, m, m/N_c, m/N_c\,\ln m)$-corrections to the dynamical quark mass $M$, the quark condensate $\langle\bar{q}q\rangle$, the pion mass $M_\pi$ and decay constant $F_\pi$. There are several sources of these corrections: meson loops, finite size of the instanton distribution and the quark-quark "tensor" interaction terms. In contrast to the expectations, we found that numerically the $1/N_c$-corrections to dynamical mass are large and mostly come from meson loops. As a consequence, we have large $1/N_c$-corrections to all the other quantities. To provide the values of $F_\pi(m=0), \langle\bar{q}q(m=0)\rangle$ in agreement with ChPT, we offer a new set of parameters - average instanton size $\rho$ and average inter-instanton distance $R$. Finally, we find the ChPT SU(2)$_f$ low-energy constants $\bar{l}_3, \bar{l}_4$ in a good correspondence with the phenomenology and lattice results.
contact
基礎物理学研究所 大西 明 (内7012)
note
このセミナーは京都大学基礎物理学研究所と京都大学理学研究科グローバルCOEプログラム普遍性と創発性から紡ぐ次世代物理学」の共催で行われます。

GCOE・基研 集中講義(宇 宙)
title
title
Thermal inflation, gravitational waves, baryogenesis and dark matter: a theory for a quarter of the history of the universe
author
Professor Ewan D. Stewart (KAIST, Korea)
date
2008年12月22日(月), 10:30−12:00, 13:30−15:00
2008年12月24日(水), 10:30−12:00
2009年 1月 6日(火), 10:30−12:00
abstract
I show how the simple extension of the Minimal Supersymmetric Standard Model $W = \lambda_u Q H_u \bar{u} + \lambda_d Q H_d \bar{d} + \lambda_e L H_d \bar{e} + \frac{1}{2} \lambda_\nu \left( L H_u \right)^2 + \lambda_\mu \phi^2 H_u H_d + \lambda_\chi \phi \chi \bar\chi$ gives rise to neutrino masses, the MSSM $\mu$-term, an axion solving the strong CP problem, thermal inflation solving the moduli and gravitino problems, a gravitational wave background potentially observable by DECIGO, baryogenesis, and dark matter.
contact
基礎物理学研究所 田中 貴浩 (Takahiro Tanaka, ext.7018, tanaka@yukawa.kyoto-u.ac.jp)
note
このセミナーは京都大学基礎物理学研究所と京都大学理学研究科グローバルCOEプログラム普遍性と創発性から紡ぐ次世代物理学」の共催で行われます。
Schedule:
Dec.22 10:30-: seminar briefly covering everything.
13:30-: informal lecture on thermal inflation and gravitational waves.
Dec.24 10:30-: informal lecture on thermal inflation, baryogenesis and dark matter.
Jan. 6 10:30-: informal lecture on numerical simulations of thermal inflation baryogenesis.

Global COE 談話会
title
Lecture on Non-LTE Radiative Transfer (Basics)
author
Professor Kim Kap-Sung (金甲星)
(Kyung Hee University, Korea)
date
2008年12月 5日(金曜日)15:00−16:00, 16:10−17:10
2008年12月12日(金曜日)15:00−16:00, 16:10−17:10
2008年12月19日(金曜日)15:00−16:00, 16:10−17:10
place
宇宙物理学教室(4号館) 5階会議室
abstract
This lecture on the radiative transfer problem of solar atmosphere has following contents; 1) The Radiation Field, 2) Radiation Transfer, 3) Emission and Absorption, 4) The Non LTE Rate Equation, 5) Numerical Method for Non LTE Radiation Transfer, 6) Summary Numerical methods and software techniques applied in solar study are demonstrated through computer practices using the C++ language. Following problems are solved in the practices; a) Statistical equilibrium of model atoms, such as H, Ca, Na and etc. b) Radiation transfer in model atmospheres.
contact
一本 潔(Kiyoshi Ichimoto, ichimoto@kwasan.kyoto-u.ac.jp ・0578-86-2311飛騨)
橋本 祐樹 (Yuki Hashimoto, hasimoto@kwasan.kyoto-u.ac.jp ・内3906)
note

Global COE seminar
title
Polymer systems with oscillating mechanical behavio
~機械的自律振動を引き起こす高分子系についての研究~
author
Professor Valentina Vasilevskaya (バレンティーナ・ワシレフスカヤ教授)
(Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences)
date
2008 年12月3 日(水) 10:30-12:00 a.m.
place
理学研究科5号館525号室(第4講義室)
abstract
刺激応答性ゲルの最も大きな特色は、その体積相転移にあります。 ゲルにおける体積相転移はDusek博士とPatterson博士によって理論的に 予測され、田中豊一博士によって実験的に示された(1979年)ことを皮きりに、 ありとあらゆる高分子ゲルで観測されてきました。 その後、高分子ゲルの分子設計に基づいた研究によって、さまざまな特性を持った ゲルを作り出すことが可能となり、バイオテクノロジーや医学領域などからも注目を集めています。 講演・談話では、ワシレフスカヤ教授の豊富な経験を基に、高分子ゲルだけにとどまらず、 その他の高分子構造転移の実験や理論などの幅広い内容について触れる予定です。
contact
吉川 研一 (理学研究科5号館230号室,内線3812
note

Global COE seminar
title
Blackfolds
author
Professor Roberto Emparan (Universitat de Barcelona, Spain)
date
2008 年11月25 日(火) 13:30-15:00 a.m.
place
基礎物理学研究所 研究棟K206
abstract
The dynamics of black holes in higher dimensions is turning out to be much richer than in four dimensions, and new tools are required in order to analyze them. An important new feature of higher-dimensional black holes is that their horizons can have two characteristic lengths of very different size. I will describe an approach that captures their dynamics at scales much larger than the short scale. This approach reveals several new kinds of black holes.
contact
田中貴浩 (tanaka@yukawa.kyoto-u.ac.jp)
白水徹也 (shiromizu@tap.scphys.kyoto-u.ac.jp)
note

Special lecture at the Physics Department of Kyoto University
title
Complex Networks: From the WWW to the cell
author
Professor Laszlo Barabasi
(Center for Complex Network Research, Northeastern University and Department of Medicine, Harvard University, USA)
date
2008 年11月17 日(火) 10:00-11:30
place
京都大学「芝蘭会館」稲盛ホール
abstract
Systems as diverse as the world wide web, Internet or the cell are described by highly interconnected networks with amazingly complex topology. Recent studies indicate that these complex networks are the result of self-organizing processes governed by simple but generic laws, resulting in architectural features that appear to be universal. My goal is to discuss the amazing order characterizing our interconnected work, and their implications to network behavior and robustness.
contact
京都大学,非線形動力学研究室,篠本 滋
(Shigeru Shinomoto, ext. 3778)
note
World Wide Webなどのネットワークのリンク構造にスケールフリー性を 見いだしたバラバシ教授が来日される機会に,京都大学にて講演を行って いただくことになりました.比較的広い会場を準備しましたが,席が 足りなくなる可能性もあります.参加は無料ですが,参加希望の方は 登録をお願いします.人数の把握が目的ですが,もし定員を超えた場合 には登録された方を優先することになります.
参加希望の方は下の参加申込書を送付先: kim@ton.scphys.kyoto-u.ac.jp
サブジェクト名は「prof barabasi」としてお送りください.
********************************************************************
Barabasi教授の講演会(芝蘭会館,11月17日(月))に参加を希望します.
関連(以下選んでください):[neuromail, nonlinear, 京大物理,その他]
氏名:
所属:
メールアドレス:
********************************************************************
Yukawa Institute, Kyoto GCOE・基研セミナー(宇宙)ASTROPHYSICS SEMINAR
title
Shaping globular clusters
author
Douglas Heggie (University of Edinburgh, UK)
date
2008 年11月6 日(木) 3:00 p.m. (November 6, Thursday)
place
京都大学基礎物理学研究所 研究棟・会議室K206
abstract
Globular star clusters have a wide range of surface brightness profiles, ranging from classic King-type profiles all the way to highly concentrated profiles with a vanishing core radius. In this seminar I discuss the various mechanisms which could account for this variety, including the behaviour of intermediate-mass black holes, blackhole binaries, neutron star binaries, and mere accidents of birth and upbringing. I focus on two particularly well studied examples: M4 and NGC 6397.
contact
基礎物理学研究所 長瀧 重博(Shigehiro Nagataki, ext.7019)
note
このセミナーは京都大学基礎物理学研究所と京都大学理学研究科グローバルCOEプログラム
「普遍性と創発性から紡ぐ次世代物理学」の共催で行われます。

英語ゼミ(談話会)
title
「Astronomy in Virtual Worlds: from meetings to collaborations to simulations」
(バーチャルワールドの天文学:会合から共同研究、シミュレーションへ)
author
Professor Piet Hut(Institute for Advance Study, Princeton)
date
Date and Time: Sep. 25 (THU), 2008, 14:00 - 15:00)
place
基礎物理学研究所 研究棟K206室 (K206[2F], Yukawa Institute for Theoretical Physics)
abstract
A group of astronomers has established a virtual astronomy institute in Second Life, a 3D on-line virtual world where astronomers worldwide can meet -- all you need is a laptop and an internet connection. The institute is called the Meta Institute for Computational Astrophysics, MICA for short (http://www.mica-vw.org/). We are using MICA for lectures and workshops, and most recently also for visualizing simulations, by reprogramming the physics engines of some virtual worlds, like OpenSim.
contact
嶺重 慎(Shin Mineshige, shm@kusastro.kyoto-u.ac.jp, ext.3901)
note

Yukawa Institute, Kyoto GCOE・基研コロキウム : GCOE/Yukawa Institute Colloquium
title
Successful Letters in Physical Review Letters: An editor's perspective
author
Manolis Antonoyiannakis (American Physical Society)
date
2008 年9 月25 日(木) 4:00 p.m. (Steptember 25, Thursday)
place
京都大学基礎物理学研究所 湯川記念館Panasonic 国際交流ホールY110
Panasonic Auditorium, Yukawa Hall, YITP, Kyoto University
abstract
A successful scientific paper relies critically on (a) the quality of the "raw" material provided by the authors, (b) the referees, and (c) the editorial decisions guiding the review process. Clearly, these three factors are interrelated, and authors can actually in°uence items (b) and (c) by attending to (a), as well as by adhering to some simple rules of common sense, on which I will elaborate in this talk. I will also provide some history from the  ̄rst 50 years of PRL, with emphasis on lessons from the past that are of relevance today, and on the current and future developments in the journal and in the American Physical Society (APS).
Some pertinent questions:
- How can authors contribute towards a timely and (hopefully) accurate review process of their papers?
- How are referees chosen, and what is expected of them? Referee statistics patterns. APS Outstanding
Referees.
- What are the challenges an editor faces? What are the operating constraints?
- Why and when it makes sense for an editor to reject a manuscript without external review.
- Are there cultural, ethnic, geographical, or other types of bias in the review process? Can we tell?
- Life after publication: New material and services by APS to highlight the very best papers.
- Can we measure the full impact of a journal? How? Can we rank journals based on such a metric?
- Does it make sense for authors to decide which journal to submit their best work to by comparing journal impact factors?
- Raising the bar: Should PRL publish fewer papers?
contact
 
note
このセミナーは京都大学基礎物理学研究所と京都大学理学研究科グローバルCOEプログラム
  「普遍性と創発性から紡ぐ次世代物理学」の共催で行われます。


Yukawa Institute, Kyoto GCOE Seminar  基研・GCOEセミナー
title
Liquid Inspection with Reflection Terahertz Time Domain Spectroscopy
author
Uffe Moller氏 (Technical University of Denmark 博士課程2年)
date
2008年 9月11日(木曜日) 14:00−15:00
( Date and Time: Sep. 11 (THU), 2008, 14:00 - 15:00 ) 
place
理学研究科5号館 4階413号室
( Place : Room 413 , Faculty of Science Building 5, Fourth Floor )
abstract
The terahertz region bridges the gap in the electromagnetic spectrum covering the frequency range between radio waves and infrared light and it. This spectral range, broadly defined as 0.1-10 THz, gives, for one thing, information about intermolecular interactions, e.g. hydrogen bonds to surrounding molecules. Since its breakthrough about 20 years ago, THz Time Domain Spectroscopy (THz-TDS) has found many applications in a wide range of fields such as fundamental physics, chemistry and biology as well as more practical applications including the fields of pharmaceutics and security.
In this talk , I will give a brief introduction to THz-TDS. I will illustrate how Reflection THz-TDS can be used for inspection of liquids in commercial plastic and glass bottles. I will demonstrate that it is possible to determine the alcohol content of a liquid, and that liquids can be classified as either harmless or inflammable. The method operates in reflection mode with the result that liquids opaque to THz radiation can be characterized with little influence of the bottle shape. The method works with plastic bottles as well as glass bottles, with absorption of THz radiation by the plastic or the glass being the limiting factor. The reflection mode allows for automatic control of the validity of the measurement. The method will be useful in liquid scanning systems at security checkpoints.
contact
田中耕一郎(Kouichiro Tanaka, ext,3756)
note
双方向国際交流プログラムによる招聘研究者

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