[geometry-ml:01359] 基研セミナー案内： R. Schoen 教授（ 2011 年 12 月 18 日）

[深谷 賢治]

幾何学メーリングリストの皆様

皆様、

　　12月18日（日）にStanford大学のRichard Schoen教授のセミナーを
以下のように基研で行います。前半は数学、後半は相対論の話をお願い
しています。なお、当日は日曜日ですが、会場のある研究棟は13:00～
17:30の間解錠される予定です。皆様のご参加お待ちしております。

細道和夫、石橋明浩、白水徹也、深谷賢治




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京都大学基礎物理学研究所　宇宙素粒子セミナーのお知らせ
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Speaker: Professor Richard Schoen(Stanford University)

Date: 18th December 2011 (Sun), 13:30-16:30

Place: Conference room K206 in Main building of YITP


*Part I:  13:30-14:30

Title:Scalar curvature in differential geometry and relativity

Abstract：

Many results about the scalar curvature in differential geometry
have meaning in general relativity, and thus geometric techniques
have direct bearing on physical problems. On the other hand conjectures and
intuition from GR have led to new and important geometric problems and
solutions of old ones. Examples of this interaction include positive
mass theorems, the Yamabe problem, existence of trapped surfaces, and
notions of quasilocal mass. This talk will be a survey of this area
with major emphasis on the mathematical problems involved.

*Part II: 15:30-16:30

Title:Mass and angular momentum for asymptotically flat spacetimes

Abstract:

For stationary rotating black holes (Kerr solutions) there is a
bound on the size of the angular momentum in terms of the mass.
The question of proving such a bound for more general spacetimes
is of substantial interest. We will discuss the mass/angular momentum
inequalities which have been obtained over the past few years for
axysymmetric black hole spacetimes. We will present a new approach
to these proposed recently by Xin Zhou and the speaker. Finally we
will discuss our construction with L. H. Huang and M. Wang which
enables us (for non-axysymmetric spacetimes) to "glue in" an arbitrarily
specified amount of angular momentum to vacuum solutions without
changing the mass and linear momentum.


世話人：細道和夫(京大基研)、石橋明浩(近大物理)、白水徹也(京大物理)、深谷賢治(京大数学)

備考 :
*当日研究棟は13:00～17:30の間解錠される予定です。
The research building is unlocked from 13:00 to 17:30 on the Sunday.